JPS5949500B2 - heating cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cooking device using electricity or gas as a heat source.

In general, this type of heating cooker has a problem in that when cooking roasted chicken, grilled fish, etc., the oily smoke generated during cooking flows directly into the room from the exhaust port, making the room extremely dirty.

For this reason, proposals have begun to be made in which an oxidation catalyst is provided at the exhaust port, and the catalyst purifies the oil smoke to eliminate indoor dirt.

FIG. 4 shows the heating cooker with a catalyst, in which 21 is a heating chamber, 22 is an exhaust port thereof, and 23 is a catalyst, which is incorporated in the exhaust port 22.

This heating cooker with a catalyst does not exhibit sufficient catalytic effect unless the temperature of the catalyst 23 is above a certain level, so a heater 24 for heating the catalyst is usually provided in the catalyst part, which causes the problem of high cost. Ta.

The present invention is aimed at solving such problems, and an embodiment thereof will be described below by applying it to an electrical open circuit.

In the figure, 1 is an oven main body, and 2 is a heating chamber provided therein, which can be opened and closed by a door 3.

Numerals 4 and 5 are upper and lower heaters provided inside the heating chamber 2, and 6 is a saucer placed between the upper and lower heaters 4 and 5, on which the food 7 is placed.

8 is an exhaust port provided in the front part of the ceiling wall of the heating chamber 2, and 9 is a catalyst tank provided in communication with the exhaust port 8, which is filled with oxidation catalyst 10 formed in the form of granules.

This catalyst tank 9 is formed using the ceiling wall of the heating warehouse 2 and is located along the ceiling wall of the heating warehouse 2.

As shown in FIG. 2, the bottom wall and ceiling wall of the catalyst tank 9 is provided with a recessed portion 11 and has an uneven shape.

Reference numeral 12 denotes a wall body provided on the inner surface of the earthen wall of the catalyst tank 9 so as to protrude downward.

13 is an exhaust pipe connected to the rear part of the catalyst tank 9, and 14 is a fan provided in the exhaust pipe 13 for forced exhaust.

In the above configuration, when the upper and lower heaters 4 and 5 generate heat to heat the food 7 on the saucer 6, the food 7 generates oily smoke.

Then, this oil smoke enters the catalyst tank 9 through the exhaust port 8, is oxidized and decomposed, becomes carbon dioxide gas and water vapor, and flows out from the exhaust stack 13.

At this time, since the catalyst tank 9 is located along the ceiling wall of the heating chamber 2, the catalyst 10 in the catalyst tank 9 is heated by the hot air inside the heating chamber 2. It can be heated to a sufficiently high temperature without providing a heater.

In particular, in this embodiment, since the inside of the heating chamber of the catalyst tank 9 is sealed in a concave-convex manner, the heating efficiency is further improved and a higher temperature can be achieved.

Therefore, the oil smoke passing through the catalyst tank 9 is reliably oxidized and decomposed and released into the room as a colorless and odorless substance.

In the above embodiment, since the catalyst 10 in the catalyst tank 9 is in the form of granules, the contact area between the catalyst and the oil smoke is large, and the catalytic effect is dramatically improved.

Furthermore, since the wall 12 is provided in a raised manner inside the catalyst tank 9,
There is no possibility that oil smoke will flow out as it is through the space above the catalyst tank which is created when the catalyst 10 in the catalyst tank 9 settles, and the merits of forming the catalyst into granules will not be lost.

In addition, in ovens such as this one in which the catalyst 10 is installed in the exhaust system passage, the oil smoke in the heating chamber 2 may not be properly discharged due to its flow resistance. Since the exhaust fan 14 is provided, there is no such problem.

FIG. 3 shows another embodiment, in which a catalyst tank 9 is provided inside the heating chamber 2 and positioned on the ceiling wall.

According to this embodiment, the entire outer periphery of the catalyst tank 9 is heated by the hot air from the heating chamber 2, so that the heating efficiency is improved and a higher temperature can be maintained.

Although not specified in the drawings, if a self-purifying catalyst coating layer is applied to the inner surface of the heating chamber 2 in any of the above embodiments, oil droplets that will scatter from the food 7 and stick to the chamber wall will be prevented. Since the oil droplets are oxidized and decomposed as they are, these oil droplets do not turn into oil smoke and become the target of purification, and have the advantage of being able to effectively purify exhaust gas with a small amount of catalyst.

As described above, according to the present invention, the catalyst tank provided in the exhaust system path of the heating chamber is placed along the upper inner wall of the heating chamber and close to the upper heat source within the heating chamber, so that the The catalyst in the catalyst tank can be effectively heated by hot air and radiant heat from the upper heat source, so there is no need to provide a heater dedicated to heating the catalyst, so it can be provided at a lower cost. It is something.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a heating cooker according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view of its main parts, Fig. 3 is a sectional view showing another embodiment, and Fig. 4 is a conventional example. FIG. 2... Heating storage, 4, 5... Heat source (heater), 9... Catalyst tank, 10... Catalyst,
11... recess, 12... wall.

Claims (1)

[Scope of Claims] 1. A heating chamber, upper and lower heat sources for heating food in the heating chamber, and a catalyst tank provided in an exhaust system path of the heating chamber, the catalyst tank being connected to the heating chamber. A heating cooker, characterized in that it is placed along an upper inner wall and close to the upper heat source. 2. The heating cooker according to claim 1, wherein the outer wall of the catalyst tank is formed in an uneven shape. 3. The heating cooker according to claim 1 or 2, wherein the catalyst in the catalyst tank is made into granules, and the upper inner wall of the catalyst tank is provided with a wall that projects downward. 4. The cooking device according to any one of claims 1 to 3, characterized in that a self-purifying coating layer is applied to the inner wall surface of the heating chamber.