JPS63160623A - Cooker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application IF) The present invention relates to cooking appliances such as pots and frying pans, and particularly relates to cooking appliances that efficiently utilize infrared rays.

(Prior art) Common cooking methods that require heating include boiling, baking, steaming, frying, etc. Pots, pots, frying pans, etc. are used for these cooking methods, and the materials used are For example, iron, aluminum, stainless steel, etc. are used. Processing methods for these metal parts include metal pressing, casting, and plating or enameling of these processed products. The above-mentioned vessel is heated primarily by contact heat transfer or convection heat transfer.

(Problems to be Solved by the Invention) However, this prior art has the following problems. In other words, commonly used pots, frying pans, etc. made of metals such as iron, aluminum, and stainless steel have a metal bottom that receives heating, so they have poor absorption efficiency of infrared rays, so infrared rays, which are effective for heating, cannot be used. Therefore, there was a problem of poor heating efficiency. Furthermore, these metals have the problem of oxidation and corrosion as the heating temperature increases. Furthermore, electric stoves and other heating devices use a ceramic plate wrapped with nichrome wire to form a heating plate. The ceramic board is heated by the nichrome wire and emits infrared rays. However,
The above pots and the like absorb less infrared rays than their bottom surfaces, which also has the problem of poor heating efficiency.

In addition, when these pots and frying pans are used for cooking, they transfer heat to the ingredients placed inside.
The way the heat is transmitted is through thermal conduction from the bottom or side surface that is in direct contact with the material, or the water that has been added in advance or the moisture contained in the material evaporates and is heated and cooked by that heat. . These conventional cooking utensils have a problem in that they cannot effectively utilize heat generated by absorption of infrared radiation as thermal energy.

Furthermore, in the case of such conventional cooking utensils, most of the heat applied to the material is due to contact heat transfer and convection heat transfer, so the material is heated strongly in some areas and the temperature difference with other parts is Because the heat is large and cannot be heated uniformly, there are problems in that it takes a long time to cook and the energy required for cooking increases. Also, like this,
There is a problem in that when ingredients are cooked for a long time or partially heated to high temperatures, the nutrients in the ingredients tend to decompose, making it impossible to cook to make the most of the nutrients in the ingredients.

Therefore, the present invention has been made to solve the above-mentioned problems of the prior art, and its purpose is to effectively utilize infrared rays from a heating source to enable cooking, and evenly cook food. The purpose of the present invention is to provide a vR heating device.

(Means for Solving the Problems) In order to accomplish the above-mentioned purpose, the present invention provides a cooking device in which the main body of the cooking section has a recess for accommodating the cooking material, and which cooks by heating. The body is configured to apply a high efficiency infrared emitting ceramic coating to at least the portion to be heated.

(Function) The present invention improves the absorption efficiency of infrared rays, increases heating efficiency, and enables uniform heating by coating at least the heated portion of the cooker with a highly efficient infrared emitting ceramic paint. It is.

(Example) The present invention will be explained below based on illustrated embodiments.

FIG. 1 shows an embodiment of a cooking appliance according to the present invention. In the figure, reference numeral 1 denotes a pot as a cooking device, which is composed of a pot body 3 having a recess 2 for storing ingredients, and a lid 5 covering an opening 4 of the body 3. This @1 is formed by processing metal such as aluminum or iron by press working or the like. Stainless steel materials are susceptible to high-temperature corrosion and are expensive, and their infrared reflection efficiency is also less favorable than that of aluminum, so it is preferable to use aluminum, iron, or the like. By the way, in the above-mentioned interval 1, the bottom surface 3a and inner surface 3b of the pot body 3 and the inner surface 5a of the lid body 5 have high spectral emissivity of 0.90 or more in the range of infrared wavelength of 2 to 20 μm. An efficient infrared emitting ceramic paint 6 is applied. This ceramic paint 6 is about 10
It is applied to a thickness of ~30 μm, but like enamel painting, it has different hardness and brittleness from metal, and there is a risk of partial chipping. If this is not clearly defined, mask painting will not be possible and the appearance will be inferior. Therefore, when partially applying the coating, a recess 7 in which the coating surface is depressed is provided between the coating surface and the non-coating surface to serve as a coating separation line. For example, when applying ceramic paint to the bottom surface 3a of #i1, the height difference between the painted surface and the non-painted surface should be 1+++s or more to protect the painted surface, and the painted surface is higher than the non-painted surface. Make it concave. In this case, the bottom surface 3a of the pot body 3 may be provided with a protrusion on the portion that comes into contact with a trivet or the like of a gas stove, so that this portion is not coated. Further, the lid body 5 includes:
A hole 9 is provided for mounting a temperature sensor 8 and the like.

FIG. 2 shows another embodiment of the present invention, in which a frying pan is used as the cooking device. In the case of the frying pan 10, since its height is low, by applying the ceramic paint 6 to all parts of the bottom surface 10a, inner surface 10b, and side surface 10c, the heat transfer from the bottom surface 10a and the side surface 10c is made highly efficient, and the inner surface 10b is used for cooking. To conduct heat efficiently to the material. Also, the frying pan is the third
As shown in the figure, it can also be used as a lid for a pot 1 or the like. When used as a lid, the bottom surface 10a of the frying pan 10 becomes the outer surface of the lid of the pot 1, and if left as is, the ceramic paint 6 applied to the bottom surface 10m of the frying pan 10 would emit infrared rays. It is preferable to process a metal such as aluminum, which has a light-reflecting surface on the portion corresponding to the frying pan, into the same shape as the bottom surface of the frying pan, and cover the frying pan with the metal cover 11.

4 to 6 show still another embodiment of the present invention, in which a pot having an auxiliary pot inside is shown. In other words, when it comes to pots and frying pans, the bottom surface is closest to the heat source, such as a gas or electric heater, and the temperature rise is large. Therefore, cooking materials that come into direct contact with the bottom of the pot 1 etc. are rapidly heated and the temperature difference with other parts becomes large, so an auxiliary pot is provided inside. For this auxiliary pot, use a medium pot like the one shown in Figure 4! 13, a steamer 14 as shown in FIG. 5, and an inner pot 15 as shown in FIG. The inner pot 13 is made of a plate or a net plate, the steamer 14 is made of a net or a silk-like shape having multiple diameters of 14 m, and the inner pot 15 is formed in the same shape as the pot. The cooking ingredients placed in these auxiliary pots are heated and cooked using heated air and infrared radiation. The above-mentioned auxiliary pot is made of aluminum, iron, or the like, and has a highly efficient infrared emitting ceramic paint 6 coated on its entire surface. Between this auxiliary pot and the pot, there are 5 to 2
A protrusion 16 is provided on the bottom surface of the auxiliary pot in order to provide a gap for the 0th air layer.

(Experiment Example 1) High-efficiency ceramic paint was applied to the outer bottom, inner surface, and inner surface of the lid of a pot made of pressed aluminum.
The heating effect was tested. The above aluminum pot 3
These pots were coated with infrared emitting ceramic paint as follows.

A: Not applied B: Ceramic paint was applied to the outer surface of the pot bottom. C: Ceramic paint was applied to the outer surface of the pot bottom, the inner surface of the pot, and the inner surface of the lid.

The rated power consumption of 800cm of water in these pots is 6.
It was installed at a height of 25 mm above the surface of the heating part of a 00W electric heater, and the temperature change of water with respect to heating time was measured. The results are shown in Table 1.

Table 1 In cases B and C, the heat transfer efficiency was significantly improved.

(Experimental Example 2) Using the same pots A, B, and C as in Experimental Example 1, an experiment was further conducted to improve heat transfer efficiency.

Prepare two sets of pots A, B, and C with 700 cc of water in them, one set with 215 g of udon noodles, and the other set with 67 g of potage soup powder.The rated power consumption is 600 W. It was installed at a height of 25 lines from the surface of the heating part of the electric heater, and the temperature change of the contents was measured with respect to heating time.

The results are shown in Tables 2 and 3.

Table 3 As is clear from the results, pots B and C coated with the infrared emitting ceramic paint had significantly improved heat transfer efficiency compared to pot A which was not coated. In addition, in cases where other contents are added in addition to water, as in this experimental example, this content absorbs a portion of the infrared rays emitted from the infrared ceramic paint applied to the inner surface of the pot. The difference in heat transfer efficiency between pots B and C is large.

As described above, in this embodiment, since the infrared emitting ceramic paint is applied to the desired part of the cooking stove, it is possible to efficiently absorb infrared rays from the heating source to increase the heating efficiency, and also to increase the heating efficiency. Since infrared rays are emitted from the ceramic paint applied to the inner surface of the cooker, it is possible to heat the cooking ingredients more uniformly than when the cooking ingredients are heated only by heat conduction from the cooker and water used for cooking.

(Effects of the Invention) The present invention has the above-described configuration and operation, and can efficiently utilize infrared rays from a heating source to perform heating uniformly.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view showing one embodiment of the adjustment device according to the present invention, FIG. 2 is a vertical cross-sectional view showing another embodiment, and FIGS. 8 to 6 show different embodiments. FIG. Explanation of symbols 1... #i 2... Concavity 3... Pot body 5... Lid body 6... Highly efficient infrared emitting ceramic paint box 1 Figure 7 3σ 6fl1g force ten, t 9f migumo tablet 27ft Figure 2 Figure 3

Claims (1)

[Claims] 1. A cooking device whose main body has a concave portion for accommodating cooking materials, and which cooks food by heating, characterized in that at least a portion of the main body to be heated is coated with a highly efficient infrared emitting ceramic paint.