JPH071091B2 - Cooking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention heats and cooks food such as electric ovens and gas ovens equipped with an exhaust device that deodorizes and eliminates oil fumes and odors generated during cooking. The present invention relates to a heating and cooking device.

(B) Conventional technology Conventionally, as a countermeasure for deodorizing and eliminating oil smoke and odor generated from food by heating in this type of cooking device, as in Japanese Patent Publication No. 62-237930, exhaust gas communicating with the inside of the chamber It is proposed that an exhaust gas purification catalyst is installed in a passage, exhaust gas is drawn into an exhaust passage by an exhaust fan, purified by a purification catalyst, and then discharged to the outside of the warehouse.

(C) Problems to be Solved by the Invention However, in the conventional device disclosed in the above publication, the exhaust fan rotates at a constant speed during heating and after cooking. Therefore, the exhaust air volume is fixed at a constant state.

As described above, if the exhaust air volume is constant, it is difficult to sufficiently remove the odor and oil smoke in the refrigerator required in the following cases. That is, the odor when raising the door to take out the cooked food from the inside,
When you want to avoid the discomfort caused by oily smoke.

When you want to prevent the previous cooking odor from adhering to the cooked food to be added for the next cooking.

When you want to discharge oil smoke and odors from the inside box before the inside surface of the cooking cabinet cools and the generated oil smoke and odor particles easily adhere to the inside surface.

Etc., could not be an effective means.

The present invention has been made in view of the above points, by making it possible to vary the exhaust air volume, and enhance the exhaust air volume when necessary,
It is an object of the present invention to provide a heating and cooking device capable of rapid deodorization and smoke elimination.

(D) Means for Solving the Problems The heating and cooking device of the present invention is a cooking cabinet in which an object to be heated is housed and cooked, and an oxidation catalyst body for deodorizing and eliminating odors and oil fumes generated from the cooking cabinet. And an exhaust fan that sucks air from the inside of the storage and blows air to the removal device.The exhaust fan rotates at low speed during cooking and rotates at high speed when the door of the cooking cabinet is opened. The exhaust fan rotation control means for controlling the above is provided.

(E) Action During cooking, the exhaust fan rotates at a low speed to prevent the temperature inside the refrigerator from dropping significantly, and oxidizes and removes high-concentration odors and oil smoke particles with an oxidation catalyst, making them odorless and harmless before releasing them outside the refrigerator. To do. After heating is completed, the exhaust fan rotates at high speed in conjunction with the operation of opening the door, and along with that, the air containing odor and oil smoke particles is rapidly sucked out of the cabinet, and is deodorized by the oxidation catalyst action.
The smoke is extinguished, and it is released into the room as odorless and detoxified.

(F) Example An example of the present invention will be described below with reference to the drawings. First
FIG. 1 is an external perspective view of a heating and cooking device according to the present invention, FIG. 2 is a front sectional view, FIG. 3 is a side sectional view, and FIG. 4 is a control block diagram.

In each drawing, 1 is a device main body which is an outer casing of a heating and cooking device called a microwave oven having a magnetron and a far-infrared heater built therein as heating means, and 2 is an inner box which forms a cooking cabinet 3 in the main body 1. The front opening 2A is closed by the door 4 so that it can be opened and closed. A cooking timer 5 is provided on the right side of the front opening 2A. A door switch 7 is provided at the opening edge 6 of the front opening 2A so as to open and close the door 4 to switch the rotation speed of the exhaust fan drive motor, which will be described later. Next, in FIG. 2, heaters 8 and 8 are arranged in the upper and lower parts of the inner box 2,
Heater surface plates 9 and 9 are disposed on the surfaces of 8 and 8, and are formed of a material that efficiently radiates electromagnetic waves having a certain wavelength value or more. 10 is a heat insulating material, and 11 is a magnetron that radiates microwaves. On the other hand, an exhaust passage 12 communicating with the cooking chamber 3 is provided with a heater 13 for heating an oxidation catalyst and an oxidation catalyst 14 using platinum, palladium or the like. An exhaust duct in which an exhaust fan 15 is inserted downstream of the exhaust passage 12.
16 are lined up.

Next, a description will be given of FIG. 4 showing the configuration of the control block that makes the rotation of the exhaust fan 15 variable based on the opening / closing of the door 4. Reference numeral 7 denotes a door opening / closing detecting means, which specifically corresponds to a door switch. The control processing unit 17 including a microcomputer transmits various acceptance signals to the control unit 19 via the input unit 18, exchanges information with a storage unit 20 that stores an appropriate cooking time, cooking output value, etc. according to the food type, The result is transmitted to the output unit 21, the cooking time, the heating temperature, etc. are displayed on the display device 22, and the control means 24 for controlling the rotation speed of the exhaust fan motor 23 is operated by the output signal from the output unit 21.

For example, while closing the door 4 and cooking
Based on the non-operation signal of the door switch 7, the control processing unit 17 outputs a control signal for rotating the exhaust fan motor 23 at a low speed to rotate the exhaust fan motor 23 at a low speed to affect the heating temperature during cooking. Based on the exhaust air volume within the range that does not exceed the range, oil smoke and odor generated by cooking are sucked out of the storage 3 by the exhaust fan 15, then deoxidized and smoked by the oxidation catalyst body 14 and passed through the exhaust duct 16, To discharge. On the other hand, when cooking is completed and the door 4 is opened, the door switch 7 is actuated and the control means 24 is operated via the control processing unit 17 based on the operation signal.
Controls the rotation of the exhaust fan motor 23 to a high speed. Therefore, the exhaust fan 15 rotates at a high speed to increase the exhaust air volume, so that the air containing odor and oil smoke particles is rapidly sucked out of the storage 3, and the oxidation catalyst body 14 similarly deodorizes the air.
The smoke is extinguished, and it is emitted as odorless and harmless in the room where the cooking device is installed. It should be noted that the volume of the oxidation catalyst and the volume of the catalyst heating heater 13 are set with a margin so that the oxidation catalyst function for deodorization and smoke elimination does not deteriorate even when the exhaust fan 15 rotates at high speed. Therefore,
In this way, the odor and oil smoke in the storage 3 are rapidly expelled, eliminating the discomfort when taking out the cooking preparation food, and preventing the previous cooking odor from adhering to the next cooking product, Prevents oil smoke and odor particles from adhering to the inner container of the container as much as possible.

(G) Effect of the Invention As described above, according to the present invention, the exhaust fan for discharging oil smoke and odor generated during cooking to the outside of the refrigerator can be varied in high speed and low speed in cooperation with opening and closing of the cooking cabinet door. So
When the door is opened to take out the cooked product from the inside of the refrigerator, odor and oil smoke are rapidly discharged, and discomfort when taking out the cooked product is reduced. Even when cooking is continued, the residual cooking odor is less likely to adhere to the next cooked product. Also,
It is possible to provide a heating and cooking device that exhibits various effects, such as less stain of cooking odor on the inner wall of the refrigerator and good hygiene.

[Brief description of drawings]

FIG. 1 is an external perspective view of the heating and cooking apparatus of the present invention, FIG. 2 is a front sectional view, FIG. 3 is a side sectional view, and FIG. 4 is a control block diagram. DESCRIPTION OF SYMBOLS 1 ... Device main body, 2 ... Inner box, 3 ... Cooking room, 4 ... Door, 7 ... Door switch, 8 ... Heater, 11 ... Magnetron, 14 ... Oxidation catalyst body, 15 ... Exhaust fan, 16 ... Exhaust duct, 23 ... Exhaust fan motor.

Claims (1)

[Claims] 1. A cooking cabinet in which an object to be heated is housed and cooked, a removing device equipped with an oxidation catalyst, etc. for deodorizing and deodorizing oil smoke and odor generated from the cooking cabinet, and suction from the cabinet. A heating and cooking device having an exhaust fan for blowing air to the removing device, the exhaust fan rotation control means for controlling the exhaust fan to rotate at low speed during cooking and to rotate at high speed when the door of the cooking cabinet is opened. A cooking device characterized by that.