JPS5933384B2 - kitchenware - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to cooking utensils, and more particularly to cooking utensils equipped with a purification device for purifying oil smoke and odor generated during cooking, including a heating heat source purification device and an oil pan. To provide an open type cooking utensil that can effectively purify oil smoke and odor by improving the arrangement.

Conventionally, an electric roaster is known as a cooking appliance equipped with this type of purification device, and there have also been proposals to provide a purification device in electric ovens, gas ovens, and the like.

These are all cooking utensils that form semi-closed boxes, and are not open-type cooking utensils.

This is because in open-type cooking utensils, oil smoke and odors leak through the open portion, making it impossible to clean them efficiently.

Therefore, in the past, a semi-sealed structure was adopted to guide all exhaust gas containing oil smoke and odors to the purification device.

Furthermore, in the conventional example described above, the heat source for heating is installed at the bottom of the cooking shelf, which has the disadvantage that oil droplets that fall from the food being cooked are heated by the heat source and generate a large amount of oil smoke. Was.

According to the present invention, a purifying device is provided in a substantially open type cooking utensil having an open portion during cooking, so that oily smoke and odor can be efficiently purified.

The present invention will be explained in detail below.

FIG. 1 shows the main parts of an open type cooking device, in which 1 is a cooking shelf on which food 2 is placed, and 3 is a burner provided below the shelf.

In cooking utensils with this structure, if a purification catalyst is simply installed above the cooking shelf, the combustion gas from the burner and the smoke from the food being cooked will flow to the opening on the side due to the ventilation resistance of the catalyst. Therefore, the purification efficiency is extremely poor, and there is no point in providing a purification device.

In addition, there is a problem in that oil dripping from the food is turned into smoke by the oil pan or burner below.

for example. Comparing the hydrocarbon concentration in the gas generated when the burner is installed at the top and bottom of the cooking shelf, it is approximately 1 = 10. It has been found that when the receiver is heated to a high temperature, it promotes the generation of oily smoke, resulting in a result similar to that of a oily smoke generator.

As is clear from the above, by installing the heat source for heating food and the purification device above the cooking shelf, the generation of smoke is drastically reduced and the load on the catalyst is reduced, so that the purification efficiency can be improved. can.

Figures 2 to 4 are configuration examples of the main parts of the cooking utensil of the present invention! It shows.

In these figures, 1 is a cooking rack on which food to be cooked, such as fish 2, is placed, and 3 is a gas burner for heating the food.

4 is an oil pan installed below the cooking shelf.

Reference numeral 5 denotes a cover covering the upper side of the cooking shelf 1, which is open at the bottom and has a constriction section 6 at the top, the end of which serves as an exhaust port.

7 is an oxidation catalyst. For this catalyst, a mixture mainly consisting of lime aluminate such as alumina cement or hydraulic cement such as Portland cement, heat-resistant aggregate such as silica sand, and metal oxide such as manganese dioxide is mixed with water. A product obtained by molding, curing and solidifying, or a product in which a platinum catalyst is supported on the cured product is suitable because it has excellent purification ability and deodorizing effect by oxidizing carbon monoxide and hydrocarbons, and is inexpensive and suitable.

The shape of the catalyst may preferably be one having a nicomb-like structure with a large number of through holes, or one in which pellets are filled in a suitable catalyst tank.

In the example shown in FIG. 2, the burner 3 is installed on the lower opening side of the cover 5, and the catalyst 7 is installed in the throttle 9 part 6 of the cover 5, but in the example shown in FIG. It is located below.

In the example shown in FIG. 4, a support rod 9 is installed upright on a base 8, and an oil pan 4. The cooking shelf 1 and cover 5 are supported.

The cover 5 is supported by a rod 9 at the fixed portion of the catalyst 7, and the burner 3 is supported by the cover 5.

If the position of the support part of the oil pan 4° with respect to the cooking shelf 1 and the cover 5 relative to the rod 9 can be adjusted, the burner 3
The relative positions of the cooking shelf 1 and the oil pan can be adjusted as appropriate.

The cooking utensil of the present invention has a heating heat source 3 and a catalyst 7 disposed above the cooking shelf 1 as described above, and an oil pan 4.
is placed in a position where there is little temperature rise due to the influence of heat source 3,
Since the temperature of the oil pan is set to 200° C. or lower, less oil smoke is generated (and purification efficiency can be improved).

That is, when the heat source is placed above the food to be cooked, the amount of hydrocarbons generated is reduced to about 1/10 compared to when the heat source is placed below the food as described above.

Also, when oil dripping from food is heated to a high temperature, it generates a large amount of oil smoke, but since the oil pan 4 is set at a temperature of 200°C or less, it may be caused by the dripping oil. 'l1m also rarely occurs.

The inventors of the present invention have repeatedly conducted experiments on the oil generated when cooking fish and meat, and have found that the oil pan is not only effective when the heat source is installed below the food, but also when the heat source is installed above the food. It has been found that when heated to a high temperature, especially above 250°C, a large amount of oil smoke is generated, but when the temperature is below 200°C, almost no oil smoke is generated.

As described above, according to the present invention, it is possible to reduce secondarily generated oil smoke.

Furthermore, since the heat source is above the food to be cooked, the temperature of the exhaust gas can be raised, and although it is an open type, the pressure loss of the catalyst can be reduced due to the draft effect, and the purification efficiency can be improved.

The relationship between the catalyst and the amount of processed gas is expressed by the space velocity (SVf direct), and in the case of cooking utensils, 5v1ii is 10,000 hr.
' is standard.

However, if the smoke concentration is high, it is necessary to use a large amount of catalyst.

In this respect, the configuration shown in FIG. 3 is very effective when a gas burner is used as the heat source.

That is, when natural gas is combusted, the amount of exhaust gas is about 10 times greater.

When the catalyst is installed below the burner as shown in Figure 3, almost no exhaust gas from the burner passes through the catalyst, so the catalyst only needs to purify the smoke generated from the food being cooked (reducing the amount of catalyst used). can do.

In this case, the catalyst is required to have heat resistance, but as mentioned above,
A catalyst containing alumina cement as a binder, combined with a heat-resistant aggregate, and a metal oxide catalyst is a preferred catalyst because it has high heat resistance and releases a large amount of radiant heat.

Furthermore, the configuration shown in FIG. 4 is convenient because the distance between the burner, the food, and the oil pan can be adjusted when the heating temperature is changed depending on the food to be cooked.

As described above, according to the present invention, an open-type cooking utensil that generates less oily smoke and odor can be realized.

[Brief explanation of drawings]

FIG. 1 is a schematic vertical cross-sectional view of the main parts of an example of an open cooking utensil, and FIGS. 2 to 4 are schematic vertical cross-sectional views of the main parts of an example of the structure of the cooking utensil of the present invention. 1...Cooking shelf, 3...-Heat source, 4...
...Oil pan, 7...Catalyst.

Claims (1)

[Scope of Claims] 1. A cooking utensil having an open part, in which a heating heat source and a catalytic oxidation type purification device for purifying oil smoke and odor are provided in the upper part of the cooking shelf, and a cooking appliance in the lower part of the cooking shelf A cooking utensil characterized in that an oil receiver is provided, and the temperature of the oil receiver during cooking is set to 200° C. or lower. 2. The cooking utensil according to claim 1, wherein the purifying device is provided below a heating heat source. 3. Claim 1 or 2, wherein the cooking shelf and the oil pan are configured so that the distance from the heating heat source can be varied.
Cooking utensils listed in section.