JPS5934304Y2 - Smoke cooker with catalyst - Google Patents

Description

[Detailed description of the invention] The present invention relates to a tank bottom of a smoking cooking utensil that is equipped with an oxide catalyst for decomposing and purifying exhaust smoke, and in which the catalytic function of the oxide catalyst becomes effective and practical. It is something.

Smoking cooking utensils are cooking utensils that smoke wood such as cherry, beech, mustard, chestnut, and walnut to infuse the smoke into the food being cooked.

The drawback of smoke cookers in practical use is that they require a large amount of smoke, and the excess smoke becomes exhaust smoke and is released from the smoke room. Alternatively, if the smoke is used indoors, it may be discharged outdoors using a smoke exhaust hose.

However, considering the current housing situation, it is not commercially available as a cooking utensil that cannot be put to practical use in general households because it produces a large amount of smoke and odors.

In order to eliminate the above-mentioned drawbacks, we devised a method in which an oxide catalyst is provided in a smoking cooking utensil, and the exhaust smoke from the smoking chamber is brought into contact with the oxide catalyst, thereby converting the exhaust smoke into a colorless and odorless decomposed gas.

As mentioned above, in order to decompose and purify exhaust smoke using an oxide catalyst, it is necessary to heat the catalyst temperature to 150°C or higher in order to obtain the catalytic effect of the oxide catalyst. It is necessary to have the following.

Considering the temperature condition where the smoking temperature is up to 80° C., it is necessary to have a structure that prevents the heat from the heater for heating the oxide catalyst from reaching the smoking chamber as much as possible.

The present invention provides that the oxide catalyst is heated to as high a temperature as possible in the smoking cooking utensil, and the temperature of the smoking chamber can be adjusted by the heater for heating the smoking chamber without being affected by the heat of the heater for heating the oxide catalyst. This relates to a housing structure that is intended to be made smaller as a household cooking appliance.In particular, it is installed above the smoking room where exhaust smoke rises due to the rising air as a place to store the oxide catalyst, and is used to heat the oxide catalyst. The heater is installed adjacent to the lower part of the oxide catalyst, and uses the oxide catalyst to decompose and purify the exhaust gas that is naturally exhausted.

An embodiment of the present invention will be described below based on the drawings.

In the figure, 1 is a housing forming a smoking chamber 2, a heater 3 for heating the smoking chamber and a temperature sensor 4 are provided at the bottom, and a smoking material 5 is installed above the heater 3 for heating the smoking chamber. It is equipped with a fire plate 6.

Reference numeral 7 denotes a soup receptacle that has the effect of receiving the juice from the food 9 placed on the cooking food placing net 8 and the effect of dispersing the smoke (arrow) so that it evenly touches the food 9.

10 is an oxide catalyst 10 provided above the housing, and smoke material 5
This is provided in the catalyst tank 11 in the smoke exhaust route of the smoke generated from the catalyst.

This oxide catalyst 10 decomposes and purifies smoke into carbon dioxide gas and water vapor while passing through as exhaust gas.

Reference numeral 12 denotes a catalyst heating heater provided below the oxide catalyst 10, which heats the oxide catalyst 10 to 150° C. or higher to improve purification performance.

13 is a lid, and 14 is a heat shield plate, which together with the oxide catalyst 10 and the catalyst tank 11 form a lid unit, and between this lid unit and the casing 1 is a gasket 15 for preventing leakage of exhaust gas. It is installed.

The lid 13 is provided with an exhaust port 16. The present invention further includes an auxiliary heat shield plate 17 that prevents radiant heat from the catalyst heater to the smoking chamber 2 and has the effect of diffusing smoke into the smoking chamber 2.

The cooking function will be explained based on the above basic structure.

The cooking temperature for smoked cooking varies depending on the food being cooked, but the maximum temperature is around 80 degrees Celsius, which is different from ordinary cooking utensils.

In order to adjust the temperature of the smoking chamber 2, the temperature of the smoking chamber is adjusted to an appropriate temperature using the combustion heat of the smoking material 5 and the temperature sensor 4 using the heat of the heater 3 as a heat source.

However, when using a catalyst for exhaust gas purification as in the present invention, it is necessary to heat the catalyst to as high a temperature as possible (over 150°C). While the catalyst heater 12 is required as a heat source for the smoker, a structure is required that does not affect the thermal power from the catalyst heater 12 (the temperature of the smoking chamber 2).

As a solution to this problem, a method has been adopted in which the temperature of the catalyst heater 12 is also controlled using a temperature sensor, but in either case, the smoking chamber 2 and the catalyst heater 12 are kept as far away from each other thermally as possible. 2 is required to have a structure in which the temperature does not rise abnormally, and exhaust smoke must pass smoothly through the oxide catalyst 10 in the form of natural exhaust.

To this end, in the present invention, a catalyst tank 11 is provided above the smoking chamber 2 in which an oxide catalyst 10 and a catalyst heater 12 are housed.

According to this, a large amount of exhaust smoke can be exhausted by the upward airflow generated by the catalyst heating heater 12, the smoking chamber heating heater 13, the combustion heat of the smoking material 5, etc., so that the oxide catalyst 10
The convection heat of the exhaust gas can also be used effectively, and most of the convection heat of the catalyst heating heater 12 can be directed toward the oxide catalyst 10, so that the heat can be used effectively.

On the other hand, the only heat that is directed from the catalyst heater 12 to the smoking chamber 2 is the heat from the heat shield plate 14 due to conduction heat, and the radiant heat directly from the catalyst heater 12. This can be eliminated by providing the auxiliary heat shield plate 17, and the heat can also be used to heat the oxide catalyst 10.The oxide catalyst can be heated to the required temperature with high thermal efficiency, and the smoking chamber 2 can be heated to the required temperature. The temperature can be maintained and controlled at an appropriate level by the smoking room heating heater 3 and temperature sensor 4 without abnormally increasing the temperature due to the heat from the heating heater.

Further, by providing the catalyst tank 11 above the smoking chamber 2, the sealing structure using the gasket 15 for preventing smoke leakage between the casing 1 and the lid unit can be simplified in order to naturally exhaust the exhaust smoke along with the upward airflow.

In addition, the present invention aims to reduce the size of the smoking cooking utensil for general household use, and for this purpose, it is desirable to integrate the smoking chamber 2 and the exhaust gas purification section that houses the oxide catalyst 11. As for the structure, as mentioned above, it is better to position the oxide catalyst 11 above the smoking chamber 2, but furthermore, as shown in the present invention in FIG. The structure is such that

In addition, as mentioned above, as shown in FIG.
In order to solve this problem, the smoke distribution is improved, and a juice tray 7 is also added to serve as a soup tray. A small hole 8 is provided around the side wall of the protruding part, and this small hole a and the juice pan 7
The smoke (arrow) force f is dispersed and released from the gap between the housing 1 and the casing 1 to the smoking chamber 2.

As described above, the present invention eliminates the disadvantages of miniaturization by integrating the exhaust gas purification section and the smoking chamber in a smoking cooking appliance equipped with a catalyst.

[Brief explanation of drawings]

The drawing is a cross-sectional view of the structure of a smoke cooking device with a catalyst showing an embodiment of the present invention. 1...Housing, 2...Smoking room, 3...
... Heater for heating the smoking room, 7 ... Juice receiver, 1
0... Oxide catalyst, 12... Heater for heating the catalyst.

Claims (4)

[Scope of utility model registration request] (1) A smoking cooker with a catalyst, characterized in that a catalyst tank containing an oxide catalyst and a heater for heating the oxide catalyst placed below the oxide catalyst is provided above the smoking chamber. (2) The catalyst-equipped smoke cooking appliance according to claim 1, wherein the catalyst tank is a tank bottom housed in a lid placed above a housing forming a smoking chamber. (3) The catalyst-equipped smoking cooker according to claim 1, which is also equipped with an auxiliary heat shield plate on the exhaust smoke side of the catalyst tank facing the side. (4) The catalyst-equipped smoke cooking device according to claim 1 of the utility model registration claim, which also includes a liquid receiver for dispersing smoke between the net on which the food to be cooked is placed and the smoking material that emits smoke.