JP3317268B2 - Electric cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric cooker such as a fish roaster.

[0002]

2. Description of the Related Art For example, an electric cooker such as a fish roaster is provided with a cooking cabinet having a heating source such as a heater.
Although it is configured to cook fish etc. in the cooking chamber,
Since a large amount of smoke is generated during heating and cooking, how to purify air containing the smoke is a major issue. In recent years, electric cookers provided with a catalyst for decomposing smoke have been developed.

[0003] For example, upper and lower heaters provided above and below in a cooking device main body, an exhaust passage configured to guide air in the cooking device main body to the outside and having an intake fan, and an exhaust passage having: A catalyst structure that decomposes smoke and odor contained in the intake air and a catalyst heater that heats the catalyst structure to activate the catalyst structure are provided. The power supply to the fan motor and the catalyst heater, which are the driving sources of the fan, is stopped.

As described above, when the energization of the upper and lower heaters, the fan motor which is the drive source of the intake fan, and the catalyst heater is stopped at the same time as the completion of the heating and cooking, the cooker is notified of the completion of the cooking by the cooker body. Attempting to remove it would result in the smoke or odor filling the cooker body being released indoors.

Accordingly, a technique has been developed in which, even after heating and cooking have been completed and the energization of the upper and lower heaters has been stopped, the energization of the fan motor and the catalyst heater is continued, and thereafter the completion of cooking is notified. (See, for example,
322860).

[0006]

By the way, cooked foods cooked using the electric cooker having such a structure not only generate a large amount of smoke and odor but also generate a small amount of smoke and odor. There is also.

However, in the case of the above-mentioned known example, the energization of the fan motor of the intake fan and the catalyst heater is continued for a predetermined time after the completion of the heating cooking. Heating alone is not enough to activate the catalyst to decompose smoke and odors.For cooked foods that generate little smoke or odor, the residual heat after cooking can be used to decompose smoke and odors without heating with a catalyst heater. Sufficient catalyst activation is obtained. In other words, when cooking food that generates a lot of smoke or odor, it takes time to decompose smoke or odor after cooking, and when cooking food that produces less smoke or odor, Electric power required for the catalyst heater may be wasted.

The present invention has been made in view of the above points, and has as its object to efficiently decompose smoke and odor after the completion of heating and cooking.

[0009]

According to the first aspect of the present invention, as means for solving the above-mentioned problems, upper and lower heaters provided at the top and bottom in a cooking device main body, and air in the cooking device main body to the outside. An exhaust passage configured to guide and having an intake fan, and a cooking timer for setting a cooking time, wherein a catalyst structure for decomposing smoke and odor contained in intake air and the catalyst structure are provided in the exhaust passage. In an electric cooker provided with a catalyst heater for heating to activate a body, the catalyst structure is provided downstream of the catalyst heater, and the catalyst heater is provided upstream of the catalyst heater. A reflection plate that reflects radiant heat from the heater is disposed, and after the heating and cooking is completed, power supply to the upper and lower heaters and the catalyst heater is stopped, and power supply to a fan motor that is a drive source of the intake fan is stopped. So that lasts.

With the above-described configuration, the operation of the intake fan is continued until a predetermined time elapses after the completion of the heating cooking. Since the temperature of the exhaust passage is maintained at a sufficiently high state, the catalyst structure is sufficiently activated by residual heat even when the heating is stopped by energizing the catalyst heater. Smoke and odor remaining in the fuel cell can be decomposed into harmless substances by contact with the catalyst structure. Therefore, it is possible to remove smoke and odor while saving power consumption by stopping power supply to the catalyst heater. In addition, since the heat radiated to the upstream side from the catalyst heater is reflected by the reflection plate and radiated to the catalyst structure disposed on the downstream side, the radiant heat from the catalyst heater is effectively used. As a result, smoke and odor can be efficiently decomposed and removed.

In the invention of claim 2, as means for solving the above-mentioned problems, upper and lower heaters provided in the upper and lower portions of the cooking device main body, and configured to guide the air in the cooking device main body to the outside, An exhaust passage having an intake fan and a cooking timer for setting a cooking time are provided. In the exhaust passage, a catalyst structure for decomposing smoke and odor contained in intake air and a catalyst structure for activating the catalyst structure are provided. An electric cooker provided with a catalyst heater for heating the catalyst heater, a heat transfer means comprising a good heat conductor for transmitting the heat of the catalyst heater to the catalyst structure, and the upper and lower heaters after the heating and cooking are completed. Further, the power supply to the catalyst heater is stopped, and the power supply to the fan motor, which is the drive source of the intake fan, is continued for a predetermined time.

With the above-described configuration, the operation of the intake fan is continued until a predetermined time elapses after the completion of the heating cooking. Since the temperature of the exhaust passage is maintained at a sufficiently high state, the catalyst structure is sufficiently activated by residual heat even when the heating is stopped by energizing the catalyst heater. Smoke and odor remaining in the fuel cell can be decomposed into harmless substances by contact with the catalyst structure. Therefore, it is possible to remove smoke and odor while saving power consumption by stopping power supply to the catalyst heater. Moreover, since the heat of the catalyst heater is reliably transmitted to the catalyst structure via the heat transfer means, the heat of the catalyst heater can be used effectively, and smoke and odor can be efficiently decomposed. Can be removed.

According to a third aspect of the present invention, as means for solving the above-mentioned problems, upper and lower heaters provided in the upper and lower portions of the cooking device main body are configured to guide air in the cooking device main body to the outside, and An exhaust passage having an intake fan and a cooking timer for setting a cooking time are provided.
An electric cooker comprising a catalyst structure for decomposing smoke and odor contained in intake air and a catalyst heater for heating the catalyst structure for activation, wherein the lower heater The power supply to the upper heater, the catalyst heater, and the fan motor which is a drive source of the intake fan is continued for a predetermined time.

With the above configuration, the operation of the upper heater, the catalyst heater, and the intake fan is continued until a predetermined time elapses after the completion of the heating cooking. That is, immediately after the completion of the heating cooking, the catalyst structure was heated by the upper heater and the catalyst heater and was sufficiently activated, and a large amount of smoke and smell remained in the cooking device main body at the end of the heating cooking. Also, the smoke and odor can be decomposed into harmless substances by contact with the catalyst structure. Therefore, smoke and odor can be removed in a short time.

According to a fourth aspect of the present invention, as means for solving the above-mentioned problems, upper and lower heaters provided in the upper and lower portions of the cooking device main body are configured to guide air in the cooking device main body to the outside, and An exhaust passage having an intake fan and a cooking timer for setting a cooking time are provided.
In an electric cooker provided with a catalyst structure for decomposing smoke and odor contained in the intake air and a catalyst heater for heating the catalyst structure to activate the catalyst structure, The energization of the heater is stopped, and the energization of the catalyst heater and the fan motor, which is the drive source of the intake fan, is intermittently performed a predetermined number of times at predetermined intervals.

With the above configuration, after the heating and cooking are completed, the power supply to the upper and lower heaters is stopped, and the catalyst heater and the intake fan are intermittently operated a predetermined number of times. In other words, immediately after the end of cooking,
The catalyst structure is heated and activated sufficiently by the intermittent energization of the catalyst heater, and the smoke and odor remaining in the cooking device main body at the end of heating cooking is made harmless by contact with the catalyst structure. Can be disassembled. Therefore, power consumption can be reduced by the amount of intermittent energization of the catalyst heater and the intake fan.

As in the invention of claim 5, claim 4
In the electric cooker described above, if the energizing interval to a fan motor that is a drive source of the catalyst heater and the intake fan is made longer as time passes, the energizing time is reduced by the amount of smoke and odor remaining in the cooker main body. And the power consumption can be further reduced.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

First Embodiment FIGS. 1 to 13 show an electric cooker according to a first embodiment of the present invention.

First, the overall structure of an electric cooker which is the subject of each embodiment of the present invention will be described.

This electric cooker is used, for example, as a fish roaster, and as shown in FIGS. 1 to 4, an outer box 2 forming an outer surface of a cooker main body 1, and
An inner box 3 in the outer box 2 forming a cooking cabinet, a grill 4 arranged to be able to be taken in and out of the inner box 3, a tray 5 placed on the bottom of the inner box 3, An upper heater 6 provided above the grill 4 in the inner box 3 and a lower heater 7 provided between the grill 4 and the tray 5 are provided. Reference numeral 8 denotes a door that covers the front opening of the cooking device main body 1, and the tray 5 is inserted into and removed from the cooking device main body 1 in conjunction with opening and closing of the door 8.

The top surface 3a of the inner box 3 and the top surface 2a of the outer box 2 are provided between the outer box 2 and the inner box 3 in the cooker main body 1.
And a left space 10 between one side 3b of the inner box 3 (ie, the left side in FIG. 2) and one side of the outer box 2 (ie, the left side in FIG. 2). , Inner box 3
The other side 3c (ie, the right side in FIG. 2) and the outer box 2
, The back surface 3d of the inner box 3 and the back surface 2d of the outer box 2
And a back space 12 is formed. The right space 11 includes an operation panel 13 formed on the front surface of the outer box 2.
Because it is on the back side of (see FIG. 4), it is a large machine room.

On the tray 5, the upper and lower heaters 6,
A heat reflection plate 14 for reflecting the radiant heat of No. 7 upward is mounted. The heat reflecting plate 14 is formed of a metal plate whose heat reflecting surface is press-formed into a corrugated shape having concave grooves 14a having a V-shaped cross section. The bottom of each concave groove 14a has Oil drain holes 15 are respectively formed. In addition, the grill 4 is placed on the peripheral portion of the heat reflection plate 14 placed on the tray 5,
It is to be taken in and out of the cooker main body 1 together with the tray 5. Then, the concave grooves 14a, 14a
Using the tapered surfaces of the two, effectively collects the oil dripping from the cooking material such as fish on the grill 4 and allows the oil to flow down immediately without stagnation.
.. Are received by the receiving tray 5 below, so that burning of the oil on the heat reflecting plate 14 is prevented.

The heat reflection plate 14 is made of, for example, stainless steel such as SUS430 having high heat reflection performance.
By reflecting the radiant heat from the upper and lower heaters 6 and 7 in the direction of the food on the grill 4, the heating efficiency of the food can be improved as much as possible. It acts to prevent the collected oil from burning and becoming a smoke source.

On the top surface 3a of the inner box 3, there are formed a number of suction holes 16, 16... For sucking air A containing smoke generated in the inner box 3. 16
.. the air A containing the smoke inhaled from the outer case 2 at a suitable place in the outer case 2 (for example, the outer case top 2 forming the upper surface of the machine room 11)
An exhaust passage 18 leading to the exhaust holes 17, 17,... formed in a) is provided. The intake holes 16, 16,...
Leftward position on the inner box top surface 3a (that is, position from one side in the opposite direction to the position where exhaust holes 17, 17,... Are formed)
Is formed. The intake holes 16, 16,... Are preferably formed in a range of 1/3 to 1/4 on the left side on the inner box top surface 3a. In addition, intake holes 16, 16
Is formed immediately above the upper heater 6.

The exhaust passage 18 is a first passage 18 located in the upper space 9 and formed between the inner box top surface 3a and the cover member 19 attached to the inner box top surface 3a.
a from the first passage 18a to the exhaust holes 17, 17,.
And a second passage 18b leading to the second passage 18b.

The cover member 19 is made of a plate member having an inverted U-shaped cross section, and is disposed on the inner box top surface 3a in the left-right direction so as to cover the intake holes 16, 16,.
The right end thereof faces the upper part of the machine room 11.

Between the cover member 19 and the top surface 3a of the inner box, an air purifying device F (to be described in detail later) is arranged in the vicinity of the intake holes 16, 16,. I have. A portion of the cover member 19 downstream of the air purification device F is a contraction portion 19a narrowed in a width direction so as to reduce an exhaust passage cross-sectional area. An outside air inlet 22 having an opening area of? The outside air intake 22 suppresses the flow rate of the air A containing smoke passing through the air purification device F by taking in outside air from the outside air inlet 22 so that the contact time between the air purification device F and the air A containing smoke becomes longer. It is necessary to

The second passage 18b is provided in the machine room 11, is connected to the tip of the contraction portion 19a of the cover member 19, and extends downward.
The duct 24 and the end of the first duct 24 are connected to the suction port 26a.
, A scroll type scroll 26 of an intake fan 25 having a discharge port 26 b facing upward, a second duct 27 connected to the discharge port 26 b of the scroll 26 and extending upward, and an upper end of the second duct 27. And an opening 29 formed in the top surface 2a of the outer box 2 (see FIG. 4).
And an exhaust grill 28 having the exhaust holes 17, 17,...

As shown in FIG. 4, the intake fan 25 is a multi-blade centrifugal fan in which a multi-blade centrifugal impeller 30 is rotatably disposed in the scroll 26. Is connected to one rotating shaft 32a of a variable-rotation type double-axis motor 32 disposed in the motor cover 31. The other rotating shaft 32 of the double shaft motor 32
An axial flow impeller 33 for cooling the dual-axis motor 32 is connected to b. Reference numeral 34 denotes a duct for introducing cooling air.
5, 35... Are formed. Reference numeral 36 denotes an opening for cooling introduction formed in the motor cover 31.

Next, several embodiments of the air purifying apparatus F will be described as the following embodiments.

Embodiment 1 (see FIG. 5) The air purifier F is provided with a catalyst heater 20 composed of a glass tube heater located in the vicinity of the intake holes 16, 16,... And in the vicinity of the downstream side of the catalyst heater 20. And two plate-shaped catalyst structures 21 and 21 arranged in close proximity to each other, and a reflection plate 37 located near the upstream side of the catalyst heater 20. The catalyst heater 20 heats and activates the catalyst structure 21. The distance between the catalyst heater 20 and the catalyst structure 21 is 10 to 20 mm in order to heat the catalyst structure 21 efficiently. It is desirable to do. Also,
It is desirable that the catalyst heater 20 is disposed slightly to the right of the center in the left-right direction on the top surface 3a of the inner box, and the distance from the intake holes 16, 16.
It is desirable to make the above. The reason for this is that the intake holes 16, 16,... And the catalyst structure are so arranged that the air A containing smoke sucked from the intake holes 16, 16,. This is to secure a distance from the control unit 21.

The catalyst heater 20 is connected to the cover member 1.
9 are held between terminals 23 fixed on both sides in the width direction. Further, the catalyst structure 21 is a high-performance oxidation catalyst in which a noble metal (for example, platinum, palladium, or the like) is supported on a metal foam having a three-dimensional network structure having high air permeability, for example. The entire amount of air A including smoke flowing through the first passage 18a is sandwiched between the cover member 19 and the inner box top surface 3a so as to pass through the catalyst structure 21.

The reflecting plate 37 reflects the radiant heat H from the catalyst heater 20 and has a convex shape that is convex toward the catalyst heater 20 side. This way,
The radiant heat H reflected by the reflection plate 37 is diffused and efficiently radiated to the upper and lower portions of the catalyst structure 21 disposed downstream of the catalyst heater 20. Therefore, the radiant heat from the catalyst heater 20 can be effectively used, and smoke and odor can be efficiently decomposed and removed.

Embodiment 2 (see FIG. 6) In this case, a large number of air circulation ports 38 are formed in the reflection plate 37 in Embodiment 1. Since the air A passes through the air circulation ports 38, 38,..., The degree to which the reflection plate 37 hinders the flow of the air A is reduced. The other structure and operation and effect are the same as those of the first embodiment, and thus the description is omitted.

Embodiment 3 (see FIG. 7) In this case, the heat of the catalyst heater 20 is transferred to the catalyst structures 21 and 21.
There is provided a heat transfer means 39 made of a good heat conductor for transmitting heat to the heat transfer member. The heat transfer means 39 includes a concave heat-receiving plate 40 disposed close to the catalyst heater 20, and mesh members 41, 41 inserted into the catalyst structures 21, 21.
And a connecting member 42 for connecting the net members 41, 41 and the heat receiving plate 40. This way,
The heat of the catalyst heater 20 is reliably transmitted to the catalyst structure 21 via the heat transfer means 39, and the heat of the catalyst heater 20 can be used effectively. Therefore, smoke and odor can be efficiently decomposed and removed. The other structure and operation and effect are the same as those of the first embodiment, and thus the description is omitted.

Embodiment 4 (see FIG. 8) In this case, the catalyst structures 21 and 21 are disposed upstream and downstream of the catalyst heater 20, respectively. With this configuration, the catalyst structures 21 and 21 disposed on the upstream and downstream sides can be heated by the radiant heat from the catalyst heater 20, and the radiant heat from the catalyst heater 20 can be effectively used. Therefore, smoke and odor can be efficiently decomposed and removed. The other structure and operation and effect are the same as those of the first embodiment, and thus the description is omitted.

Fifth Embodiment (see FIG. 9) In this case, the catalyst structures 21 and 21 are provided on the upstream and downstream sides of the catalyst heater 20, respectively, and the heat of the catalyst heater 20 is transferred to the catalyst structures 21 and 21. Heat transfer means 39, 39 made of a good thermal conductor for transmission are provided, respectively. Each of the heat transfer means 39 includes a concave heat-receiving plate 40 disposed close to the catalyst heater 20, and mesh members 41, 41 inserted into the catalyst structures 21, 21.
And a connecting member 42 for connecting the net members 41, 41 and the heat receiving plate 40. This way,
The heat of the catalyst heater 20 is reliably transmitted to the catalyst structures 21 and 21 via the heat transfer means 39 and 39, and the heat of the catalyst heater 20 can be used effectively. Therefore, smoke and odor can be efficiently decomposed and removed. The other structure and operation and effect are the same as those of the first embodiment, and thus the description is omitted.

Embodiment 6 (see FIG. 10) In this case, a catalyst structure 21 is disposed downstream of the catalyst heater 20, and a surface of the catalyst structure 21 facing the catalyst heater 20 is formed in a concave shape. . In this way, a large amount of radiant heat from the catalyst heater 20 reaches the catalyst structure 21, and the heat of the catalyst heater 20 can be used effectively. Therefore, smoke and odor can be efficiently decomposed and removed. The other structure and operation and effect are the same as those of the first embodiment, and thus the description is omitted.

Embodiment 7 (see FIG. 11) In this case, the catalyst structure 21 is disposed upstream of the catalyst heater 20, and the surface of the catalyst structure 21 facing the catalyst heater 20 has a concave shape. . In this way, a large amount of radiant heat from the catalyst heater 20 reaches the catalyst structure 21, and the heat of the catalyst heater 20 can be used effectively. Therefore, smoke and odor can be efficiently decomposed and removed. The other structure and operation and effect are the same as those of the first embodiment, and thus the description is omitted.

Embodiment 8 (see FIG. 12) In this case, the catalyst structures 21 and 21 are arranged on the upstream and downstream sides of the catalyst heater 20 and the catalyst structures 2 and 21 are arranged.
The surfaces facing the catalyst heater 20 in 1 and 21 each have a concave shape (that is, a semicircular shape). That is, the surfaces of the catalyst structures 21 and 21 facing the catalyst heater 20 are cylindrical. In this way, a large amount of radiant heat from the entire circumference of the catalyst heater 20 reaches the catalyst structure 21, and the heat of the catalyst heater 20 can be used effectively. Therefore, smoke and odor can be efficiently decomposed and removed. The other structure and operation and effect are the same as those of the first embodiment, and thus the description is omitted.

In the electric cooker configured as described above, the following operational effects can be obtained.

In this electric cooker, when the upper and lower heaters 6 and 7 generate heat, the cooked food such as fish placed on the grill 4 is efficiently cooked from both upper and lower surfaces.

As the cooking proceeds, smoke is generated from the cooked food and the grill 4, and the air A containing the smoke is supplied to the intake fan 25 provided in the second passage 18 b of the exhaust passage 18. By driving, the catalyst structure 21 is sucked into the first passage 18a from the intake holes 16, 16,... Formed in the inner box top surface 3a, and activated by the catalyst heater 20 in the process of passing through the first passage 18a. Odor and oily fumes are oxidatively decomposed and cleaned by contact with water.

Thereafter, the purified air A is supplied to the second passage 1
The air is blown into the room through the exhaust holes 17, 17.

That is, in this electric cooker, the air A containing smoke generated by cooking is purified by contact with the catalyst structure 21 in the process of flowing through the exhaust passage 18 and is blown out into the room. Therefore, it is safe to cook foods that emit a lot of smoke.

In the present embodiment, since the catalyst structure 21 is disposed in the first passage 18a while being sandwiched between the inner box top surface 3a and the cover member 19, the catalyst heater 20 Is heated by the heat from the inner box top surface 3a whose temperature has been raised by the upper heater 6 together with the heating by the upper heater 6. Therefore, the catalyst structure 21 can be quickly and sufficiently activated, and even if a large amount of smoke is generated, it can be sufficiently purified when passing through the catalyst structure 21.

The positions of the intake holes 16, 16... Are set to be closer to the left and right in the inner box top surface 3a (ie, in the direction opposite to the positions where the exhaust holes 17, 17. , The catalyst structure 21 with the inner box top surface 3
a of the intake holes 16, 16.
Are arranged at the position opposite to the formation position of the catalyst structure 21, so that the distance from the intake holes 16, 16,... To the catalyst structure 21 can be increased, and smoke passing through the catalyst structure 21 can be reduced. The flow velocity of the contained air A decreases. Therefore, the contact time between the catalyst structure 21 and the air A containing smoke is prolonged, and the purification efficiency is improved.

Since the intake holes 16, 16,... Are formed immediately above the upper heater 6, the intake holes 1, 16,.
Air A containing smoke sucked into 6, 16.
The catalyst structure 21
Is further improved.

The portion of the cover member 19 constituting the first passage 18a on the downstream side of the catalyst structure 21 is
Contraction portion 19a narrowed so as to reduce the cross-sectional area of the exhaust passage
As a result, the flow velocity of the exhaust gas after passing through the catalyst structure 21 (that is, the exhaust power) can be increased, and the size of the intake fan 25 can be reduced.
Therefore, the product can be made compact and power consumption can be reduced.

Further, since the two-axis motor 32 for driving the intake fan 25 is of a variable rotation speed type, both types are controlled in accordance with the type of the cooked food (for example, whether or not smoke is generated more or less). The rotation speed of the shaft motor 32 can be changed.

By the way, electric elements (for example, the upper and lower heaters 6, 7, the catalyst heater 20, the fan motor 32 of the intake fan 25) in the electric cooker according to the present embodiment.
Are connected as shown in FIG.

In FIG. 13, reference numeral 43 denotes an AC power supply,
4 is a cooking timer, 45 is a changeover switch for switching energization to the lower heater 7, 46 is a changeover switch for switching energization to the fan motor 32, and 47 is an over-temperature prevention device. The cooking timer 44 is operated by two switches 4
4A and 44B. The switch 44A controls energization of the upper and lower heaters 6, 7 and the catalyst heater 20 by contacting / non-contact of the movable contact 44Ab of the switch 44A with the fixed contact 44Aa. The power supply to the fan motor 32 is controlled by the contact / non-contact of the switch 44B of the switch 44B with the fixed contact 44Ba.
B controls energization of the fan motor 32 by contact / non-contact of the movable contact 44Bb of the switch 44B with the fixed contact 44Ba. That is, switch 4
4A and 44B are closed simultaneously, the movable contact 44Ab of the switch 44A contacts the fixed contact 44Ba of the switch 44B simultaneously with the opening of the switch 44B, and the movable contacts 44Ab and 4B of the switches 44A and 44B after a predetermined time has elapsed.
4Bb is located at the neutral position and is opened together.

In the above configuration, the changeover switches 45,
When the cooking timer 44 is turned on with the 46 closed, the switches 44A and 44B are closed, and the energization of the upper and lower heaters 6, 7, the catalyst heater 20 and the fan motor 32 is started, and the heating and cooking is started. Is done. The smoke and odor generated during the heating and cooking are decomposed by the catalyst structure 21 in the process of passing through the exhaust passage 18 as described above.

When the cooking time set by the cooking timer 44 elapses, the switch 44B of the cooking timer 44 is opened.
Ab is separated from the fixed contact 44Aa and is separated from the fixed contact 44Ba.
To keep the closed state. That is, the cooking timer 4
After the cooking time set by Step 4 has elapsed, the power supply to the upper and lower heaters 6, 7 and the catalyst heater 20 is stopped,
The energization of the fan motor 32 is continued. Therefore, the remaining smoke and smell at the end of cooking is
Intake fan 25 driven by fan motor 32
As a result, the gas flows out into the exhaust passage 18 and is decomposed by the catalyst structure 21 activated by the residual heat in the cooker main body 1 (specifically, in the inner box 3). After a predetermined time has elapsed after the contact of the movable contact 44Ab of the switch 44A with the fixed contact 44Ba of the cooking timer 44, the switches 44A and 44B enter a neutral state (that is, both the switches 44A and 44B are opened), and the fan The energization of the motor 32 is stopped. At this point, the cooking completion notification may be given.

As described above, in this embodiment,
The operation of the intake fan 25 is continued until a predetermined time has elapsed since the end of the heating cooking. By the way, immediately after the completion of the heating and cooking, the temperatures in the cooking device main body 1 and the exhaust passage 18 are kept sufficiently high.
Even when the catalyst heater 20 is stopped by energization, the catalyst structure 21 is sufficiently activated by residual heat. Therefore, smoke and odor remaining in the cooking device main body 1 at the end of the heating cooking can be decomposed into harmless substances by contact with the catalyst structure 21. That is, smoke and odor can be removed while power consumption is reduced by stopping the power supply to the catalyst heater 20.

Further, in the present embodiment, when cooking a food which generates almost no smoke or odor,
The changeover switch 46 is opened, and the driving of the intake fan 25 is stopped.

Second Embodiment FIG. 14 shows a connection state of electric elements in an electric cooker according to a second embodiment of the present invention.

In this case, the switch 44A of the cooking timer 44 turns on one of the two upper heaters 6, 6 and the lower heater 7 by contacting / non-contacting the movable contact 44Ab of the switch 44A with the fixed contact 44Aa. Control and the fixed contact 4 of the switch 44B of the movable contact 44Ab.
The other of the upper heaters 6, 6 by contact / non-contact with 4Ba,
The power supply to the catalyst heater 20 and the fan motor 32 is controlled, and the switch 44B is connected to the movable contact 4 of the switch 44B.
The contact and non-contact of the 4Bb with the fixed contact 44Ba controls the power supply to the other of the upper heaters 6 and 6, the catalyst heater 20 and the fan motor 32. That is, the switches 44A and 44B are simultaneously closed, and the switch 4
The movable contact 44Ab of the switch 44A simultaneously with the opening of 4B.
Contacts the fixed contact 44Ba of the switch 44B, and after a lapse of a predetermined time, the movable contact 44 of the switches 44A and 44B.
Ab and 44Bb are opened together by being located in the neutral position. The changeover switch 46 is omitted. Other configurations are the same as those in the first embodiment.

In this case, when the cooking time set by the cooking timer 44 elapses, the switch 44B of the cooking timer 44 is opened, but the movable contact 44Ab of the switch 44A is separated from the fixed contact 44Aa and fixed contact 44Ba. To keep the closed state. That is,
After the cooking time set by the cooking timer 44 has elapsed, the power supply to one of the upper heaters 6 and 6 and the lower heater 7 is stopped, and the power to the other of the upper heaters 6 and 6, the catalyst heater 20 and the fan motor 32 is turned off. The energization is continued.
Therefore, the smoke and the odor remaining at the time when the heating and cooking are completed flow out to the exhaust passage 18 by the intake fan 25 driven by the fan motor 32, and are heated to a high temperature by the other of the upper heaters 6 and 6 and the catalyst heater 20. The catalyst is decomposed by the heated catalyst structure 21. Cooking timer 4
After a predetermined time has elapsed after the contact of the movable contact 44Ab of the switch 44A with the fixed contact 44Ba of the switch 44A, the switches 44A and 44B enter the neutral state (that is, the switch 44A).
A and 44B are both opened), the other of the upper heaters 6 and 6, the catalyst heater 20 and the fan motor 32.
The power supply to is stopped. At this point, the cooking completion notification may be given. In this case, it is suitable for heating and cooking a food in which a large amount of smoke or odor remains even after the completion of the heating. Other functions and effects are the same as those in the first embodiment, and a description thereof will be omitted.

Third Embodiment FIG. 15 shows a connection state of electric elements in an electric cooker according to a third embodiment of the present invention.

In this case, the switch 44A of the cooking timer 44 controls the energization of the lower heater 7 by the contact / non-contact of the movable contact 44Ab of the switch 44A with the fixed contact 44Aa and the switch 44B of the movable contact 44Ab. The energization of the two upper heaters 6 and 6, the catalyst heater 20 and the fan motor 32 is controlled by contact and non-contact with the fixed contact 44Ba, and the switch 44B switches the movable contact 44Bb of the switch 44B to the fixed contact 44Ba. Two upper heaters 6, 6 and catalyst heater 20 by contact / non-contact
The power supply to the fan motor 32 is controlled. That is, the switches 44A and 44B are closed at the same time, and the switch 44A is opened simultaneously with the opening of the switch 44B.
Movable contact 44Ab is fixed contact 44B of switch 44B.
a, and after a predetermined time has elapsed, switches 44A, 4A
The movable contacts 44Ab and 44Bb of 4B are both opened by being located at the neutral position. The changeover switch 46 is omitted. Other configurations are the first
This is the same as in the embodiment.

In this case, when the cooking time set by the cooking timer 44 elapses, the switch 44B of the cooking timer 44 is opened, but the movable contact 44Ab of the switch 44A is separated from the fixed contact 44Aa and fixed contact 44Ba. To keep the closed state. That is,
After the cooking time set by the cooking timer 44 has elapsed, the power supply to the lower heater 7 is stopped, and the power supply to the two upper heaters 6 and 6, the catalyst heater 20 and the fan motor 32 is continued. . Therefore, the smoke and smell remaining at the time when the heating and cooking are completed flow out to the exhaust passage 18 by the intake fan 25 driven by the fan motor 32, and the high temperature is increased by the two upper heaters 6 and 6 and the catalyst heater 20. Is decomposed by the activated catalyst structure 21. After a predetermined time has elapsed after the contact of the movable contact 44Ab of the switch 44A with the fixed contact 44Ba of the cooking timer 44, the switches 44A and 44B enter a neutral state (that is, the switches 44A and 44B are both opened). Upper heaters 6, 6 for the book, catalyst heater 20
And the energization to the fan motor 32 is stopped. At this point, the cooking completion notification may be given. In this case, it is suitable for heating and cooking a food in which a large amount of smoke or odor remains even after the completion of the heating. Other functions and effects are the same as those in the first embodiment, and a description thereof will be omitted.

Fourth Embodiment FIG. 16 shows a connection state of electric elements in an electric cooker according to a fourth embodiment of the present invention.

In this case, the switch 44A of the cooking timer 44 causes the movable heater 44Ab of the switch 44A to contact or not contact the fixed contact 44Aa, so that the upper and lower heaters 6 and 6 are turned off.
7 and the contact of the movable contact 44Ab with the fixed contact 44Ba of the switch 44B controls the supply of electricity to the catalyst heater 20 and the fan motor 32. The switch 44B is connected to the movable contact of the switch 44B. The energization of the catalyst heater 20 and the fan motor 32 is controlled by the contact / non-contact of the fixed contact 44Ba with the fixed contact 44Ba. Further, an intermittent switch 48 is provided in series with the switch 44B of the cooking timer 44 to repeat closing and opening at predetermined time intervals. The intermittent switch 4
8 may repeat the closing and the opening at regular time intervals, but after the cooking, there is no generation of smoke or odor, so that the opening time interval is made longer as time passes. Is desirable. The changeover switch 46 is omitted. Other configurations are the same as those in the first embodiment.

In this case, when the cooking time set by the cooking timer 44 elapses, the switch 44B of the cooking timer 44 is opened, but the movable contact 44Ab of the switch 44A is separated from the fixed contact 44Aa and fixed contact 44Ba. To keep the closed state. That is,
After the cooking time set by the cooking timer 44 has elapsed, the power supply to the upper and lower heaters 6 and 7 is stopped, and the power supply to the catalyst heater 20 and the fan motor 32 is performed at predetermined time intervals by the intermittent switch 48. . Therefore,
Smoke and odor remaining at the time of completion of the heating cooking flow out to the exhaust passage 18 by the intake fan 25 driven by the fan motor 32, and are discharged by the catalyst structure 21 heated and activated by the catalyst heater 20. Decomposed. Movable contact 44A of switch 44A in cooking timer 44
After a predetermined time elapses after the contact of b with the fixed contact 44Ba, the switches 44A and 44B enter a neutral state (that is, the switches 44A and 44B are both opened), and
The energization of the catalyst heater 20 and the fan motor 32 is stopped. At this point, the cooking completion notification may be given. In this case, power consumption can be saved by the amount of intermittent energization of the catalyst heater 20 and the fan motor 32. Other functions and effects are the same as those in the first embodiment, and a description thereof will be omitted.

Fifth Embodiment FIG. 17 shows a connection state of electric elements in an electric cooker according to a fifth embodiment of the present invention.

In this case, separately from the cooking timer 44, the cooking timer 11 is interlocked with the cooking timer
A power supply timer 49 having an operation time longer than that of the upper and lower heaters 6 and 7 is controlled by the power supply timer 49 to supply power to the catalyst heater 20 and the fan motor 32.
The energization of the power supply is controlled by a power supply timer 49 and a cooking timer 44. Other configurations are the same as those in the first embodiment.

In this case, the power supply timer 49
By the N operation, first, energization of the catalyst heater 20 and the fan motor 32 is started, and thereafter, a predetermined time a (for example,
When one minute has elapsed, the cooking timer 44 is activated to start energizing the upper and lower heaters 6 and 7. That is, the catalyst heater 2
After the catalyst structure 21 has been heated to a certain temperature by energizing to 0, heating cooking is started by energizing the upper and lower heaters 6 and 7. When the cooking time t set by the cooking timer 44 elapses, the cooking timer 4
The power supply timer 49 is turned off to stop energizing the upper and lower heaters 6 and 7, and thereafter, when a predetermined time b (for example, 2 minutes) has elapsed, the power supply timer 49 is turned off to supply power to the catalyst heater 20 and the fan motor 32. The energization is stopped. At this point, the cooking completion notification may be given. The change in power consumption during the heating and cooking is as shown in the time chart of FIG.

Therefore, both the smoke and the odor remaining in the cooking device body 1 before the heating and cooking and the smoke and the odor remaining after the heating and cooking are completed, the intake fan 25 driven by the fan motor 32. The catalyst structure 2 flows out into the exhaust passage 18 and is heated and activated by the catalyst heater 20.
Decomposed by 1. Other functions and effects are the same as those in the first embodiment, and a description thereof will be omitted.

Sixth Embodiment FIG. 19 shows a connection state of electric elements in an electric cooker according to a sixth embodiment of the present invention.

In this case, a thermal responsive switch 50 is provided near the catalyst structure 21 and is closed when the temperature of the catalyst structure 21 rises to a predetermined temperature. The thermally responsive switch 50 controls the energization of the upper and lower heaters 6 and 7. The switch 44A of the cooking timer 44 is connected to the movable contact 44Ab of the switch 44A so as to come into contact with the fixed contact 44Aa.
The contact of the movable contact 44Ab with the fixed contact 44Ba of the switch 44B controls the energization of the catalyst heater 20 and the fan motor 32, and the switch 44B switches the movable contact 4 of the switch 44B.
The power supply to the catalyst heater 20 and the fan motor 32 is controlled by the contact / non-contact of the 4Bb with the fixed contact 44Ba. Other configurations are the same as those in the first embodiment.

In such a case, the cooking timer 44
When the N operation is performed, first, energization to the catalyst heater 20 and the fan motor 32 is started. However, since the heat responsive switch 50 is opened, the upper and lower heaters 6 and 7 are not energized. Then, when the catalyst structure 21 is heated to a predetermined temperature by the catalyst heater 20, the heat responsive switch 50 is closed, and power supply to the upper and lower heaters 6, 7 is started. That is,
After the catalyst structure 21 is heated to a predetermined temperature by energizing the catalyst heater 20, heating and cooking are started by energizing the upper and lower heaters 6 and 7. After that, cooking timer 4
When the cooking time set by Step 4 elapses, the switch 44B of the cooking timer 44 is opened, but the movable contact 44Ab of the switch 44A separates from the fixed contact 44Aa and contacts the fixed contact 44Ba to keep the closed state. Then, the power supply to the catalyst heater 20 and the fan motor 32 is continued. Thereafter, when a predetermined time has elapsed, the energization to the catalyst heater 20 and the fan motor 32 is stopped.
At this point, the cooking completion notification may be given.

Therefore, both the smoke and the odor remaining in the cooking device main body 1 before the heating and cooking and the smoke and the odor remaining after the completion of the heating and cooking are reduced by the intake fan 25 driven by the fan motor 32. The catalyst structure 2 flows out into the exhaust passage 18 and is heated and activated by the catalyst heater 20.
Decomposed by 1. Other functions and effects are the same as those in the first embodiment, and a description thereof will be omitted.

Seventh Embodiment FIG. 20 shows a connection state of electric elements in an electric cooker according to a seventh embodiment of the present invention.

In this case, the thermally responsive switch 50 controls the energization of the upper and lower heaters 6, 7 and the fan motor 32. By doing so, the catalyst heater 20
Is not affected by the driving of the intake fan 25, and the heating efficiency of the catalyst structure 21 is improved. The other configuration and operation and effect are the same as those in the sixth embodiment, and the description is omitted.

Eighth Embodiment FIG. 21 shows a connection state of electric elements in an electric cooker according to an eighth embodiment of the present invention.

In this case, two fixed contacts 51a and 51b and two fixed contacts 51a and 51b are provided between the upper heater 6 and the lower heater 7.
A movable contact 51c selectively contacted with any one of the movable contacts 51b
Changeover switch 51 comprising two fixed contacts 52
a, 52b and the thermally responsive contact 52c selectively contacting any one of the fixed contacts 52a, 52b and the thermally responsive contact 52c
Timer 52 comprising a heater 52d for heating the heater
Are provided. One fixed contact 51a of the changeover switch 51 is connected to a thermally responsive contact 52c of the thermal timer 52, and one fixed contact 52a of the thermal timer 52 is connected to the upper heater 6 via a heater 52d. On the other hand, the other fixed contact 51b of the changeover switch 51 is connected to the other fixed contact 52b of the thermal timer 52 and the upper heater 6, and the other fixed contact 52b of the thermal timer 52 is connected.
Are connected to the lower heater 7.

With the above configuration, when the movable contact 51c of the changeover switch 51 is in contact with the fixed contact 51b, the upper and lower heaters 6, 7 are energized. When contacting the fixed contact 51a, the thermal timer 5
When the thermally responsive contact 52c of FIG. 2 is in contact with the fixed contact 52a, the heater 52d and the upper heater 6 are energized, and the heating of the heater 52d deforms the thermally responsive contact 52c to contact the fixed contact 52b. Power supply to 52d and the upper heater 6 is stopped, and power is supplied to the lower heater 7. Then, when the heating to the thermal responsive contact 52c is stopped by stopping the power supply to the heater 52d and the temperature drops, the thermal responsive contact 52c comes into contact with the fixed contact 52a again, and the power supply to the heater 52d and the upper heater 6 starts. Is done. That is, by the switching operation of the changeover switch 51, continuous energization to the upper and lower heaters 6, 7 and alternate energization of the upper heater 6 and the lower heater 7 can be selected.

The other configuration and operation and effect are the same as those in the first embodiment, and the description is omitted.

[0081]

According to the first aspect of the present invention, the upper and lower heaters provided in the upper and lower portions of the cooking device main body, and the exhaust passage having the intake fan configured to guide the air in the cooking device main body to the outside. And a cooking timer for setting a cooking time, a catalyst structure for decomposing smoke and odor contained in the intake air and a catalyst heater for heating to activate the catalyst structure in the exhaust passage. In the electric cooker having the above arrangement, the catalyst structure is disposed downstream of the catalyst heater, and a reflection plate that reflects radiant heat from the catalyst heater is disposed upstream of the catalyst heater. At the same time, after the completion of the cooking, the energization of the upper and lower heaters and the catalyst heater is stopped, and the energization of the fan motor, which is the drive source of the intake fan, is continued for a predetermined time. The operation of the intake fan is continued until a predetermined time has passed since the start of the heating.However, immediately after the completion of the heating and cooking, the temperature of the inside of the cooker body and the temperature of the exhaust passage are kept sufficiently high. Even if it is stopped by the power supply to the catalyst, the catalyst structure will be sufficiently activated by residual heat, and the smoke and odor remaining in the cooking device main body at the end of cooking will be harmless by contact with the catalyst structure. This has the effect that smoke and odor can be removed while saving power consumption by stopping the power supply to the catalyst heater. In addition, since the heat radiated to the upstream side from the catalyst heater is reflected by the reflection plate and radiated to the catalyst structure disposed on the downstream side, the radiant heat from the catalyst heater is effectively used. Therefore, smoke and odor can be efficiently decomposed and removed.

According to the invention of claim 2, upper and lower heaters provided in the upper and lower portions of the cooking device main body, an exhaust passage configured to guide air in the cooking device main body to the outside, and having an intake fan, With a cooking timer that sets the cooking time,
Within the exhaust passage, in an electric cooker provided with a catalyst structure that decomposes smoke and odor contained in the intake air and a catalyst heater that heats to activate the catalyst structure,
A heat transfer means comprising a good heat conductor for transferring the heat of the catalyst heater to the catalyst structure is provided. After the heating and cooking is completed, the power supply to the upper and lower heaters and the catalyst heater is stopped, and a drive source for the intake fan is provided. Since the energization of the fan motor is continued for a predetermined time, the operation of the intake fan is continued until the predetermined time elapses after the heating and cooking is completed. Since the temperature in the cooking device main body and the exhaust passage is maintained at a sufficiently high state, the catalyst structure is sufficiently activated by residual heat even when the catalyst heater is stopped by energizing the catalyst heater. Smoke and odor remaining in the cooker body at the time of termination can be broken down into harmless substances by contact with the catalyst structure, and power consumption is reduced by stopping power supply to the catalyst heater While, there is an effect that it is possible to remove the smoke and odor. Moreover, since the heat of the catalyst heater is reliably transmitted to the catalyst structure via the heat transfer means, the heat of the catalyst heater can be used effectively, and smoke and odor can be efficiently decomposed. There is also an effect that it can be removed.

According to the third aspect of the present invention, the upper and lower heaters provided above and below the cooking device main body, the exhaust passage configured to guide the air inside the cooking device main body to the outside, and having the intake fan, With a cooking timer that sets the cooking time,
In the electric cooker, a catalyst structure that decomposes smoke and odor contained in the intake air and a catalyst heater that heats the catalyst structure to activate the catalyst structure are provided in the exhaust passage. After the termination, the power supply to the lower heater is stopped, and the power supply to the fan heater, which is the drive source of the upper heater, the catalyst heater, and the intake fan, is continued for a predetermined time. After that, the operation of the upper heater, the catalyst heater, and the intake fan is continued until a predetermined time elapses. Immediately after the completion of the heating, the catalyst structure is heated by the upper heater and the catalyst heater to be sufficiently activated. Even if a large amount of smoke or smell remains in the cooker body at the end of heating cooking,
The smoke and odor can be decomposed into harmless substances by contact with the catalyst structure, and the smoke and odor can be removed in a short time.

According to the fourth aspect of the present invention, the upper and lower heaters provided above and below the cooking device main body, the exhaust passage configured to guide the air inside the cooking device main body to the outside, and having the intake fan, With a cooking timer that sets the cooking time,
In the electric cooking device, a catalyst structure that decomposes smoke and odor contained in the intake air and a catalyst heater that heats the catalyst structure to activate the catalyst structure are provided in the exhaust passage. After the cooking is completed, the power supply to the upper and lower heaters is stopped, and the power supply to the catalyst heater and the fan motor that is the drive source of the intake fan is performed intermittently a predetermined number of times at a predetermined interval. After the cooking is completed, the power supply to the upper and lower heaters is stopped, and the catalyst heater and the intake fan are intermittently operated a predetermined number of times. Heated and fully activated,
Smoke and odor remaining in the cooking device body at the end of cooking can be broken down into harmless substances by contact with the catalyst structure, and power consumption can be saved by the intermittent energization of the catalyst heater and intake fan. This has the effect.

As in the invention of claim 5, claim 4
In the electric cooker described above, if the energizing interval to a fan motor that is a drive source of the catalyst heater and the intake fan is made longer as time passes, the energizing time is reduced by the amount of smoke and odor remaining in the cooker main body. And the power consumption can be further reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a state in which an outer box of an electric cooker according to a first embodiment of the present invention is removed.

FIG. 2 is a longitudinal sectional view of the electric cooker according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional plan view of the electric cooker according to the first embodiment of the present invention.

FIG. 4 is a vertical sectional side view of a machine room portion in the electric cooker according to the first embodiment of the present invention.

FIG. 5 is an enlarged sectional view showing Example 1 of the air purification device in the electric cooker according to the first embodiment of the present invention.

FIG. 6 is an enlarged sectional view showing Example 2 of the air purification device in the electric cooker according to the first embodiment of the present invention.

FIG. 7 is an enlarged sectional view showing Example 3 of the air purification device in the electric cooker according to the first embodiment of the present invention.

FIG. 8 is an enlarged sectional view showing Example 4 of the air purification device in the electric cooker according to the first embodiment of the present invention.

FIG. 9 is an enlarged sectional view showing Example 5 of the air purification device in the electric cooker according to the first embodiment of the present invention.

FIG. 10 is an enlarged sectional view showing Example 6 of the air purification device in the electric cooker according to the first embodiment of the present invention.

FIG. 11 is an enlarged sectional view showing Example 7 of the air purification device in the electric cooker according to the first embodiment of the present invention.

FIG. 12 is an enlarged sectional view showing Example 8 of the air purification device in the electric cooker according to the first embodiment of the present invention.

FIG. 13 is a connection diagram of electric elements in the electric cooker according to the first embodiment of the present invention.

FIG. 14 is a connection diagram of electric elements in the electric cooker according to the second embodiment of the present invention.

FIG. 15 is a connection diagram of electric elements in the electric cooker according to the third embodiment of the present invention.

FIG. 16 is a connection diagram of electric elements in the electric cooker according to the fourth embodiment of the present invention.

FIG. 17 is a connection diagram of electric elements in the electric cooker according to the fifth embodiment of the present invention.

FIG. 18 is a time chart showing changes in power consumption during heating and cooking in the electric cooker according to the fifth embodiment of the present invention.

FIG. 19 is a connection diagram of electric elements in the electric cooker according to the sixth embodiment of the present invention.

FIG. 20 is a connection diagram of electric elements in the electric cooker according to the seventh embodiment of the present invention.

FIG. 21 is a connection diagram of electric elements in the electric cooker according to the eighth embodiment of the present invention.

[Explanation of symbols]

1 is a cooker body, 6 is an upper heater, 7 is a lower heater, 20 is a catalyst heater, 21 is a catalyst structure, 25 is an intake fan, 3
2 is a fan motor, 37 is a reflector, 39 is a heat transfer means, 4
4 is a cooking timer, 48 is an intermittent switch, 49 is a power timer, and 50 is a heat responsive switch.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A47J 37/06 F24C 7/04 F24C 15/20

Claims (5)

(57) [Claims] 1. An upper and lower heater provided at the top and bottom in a cooking device main body, an exhaust passage configured to guide air in the cooking device main body to the outside and having an intake fan, and a cooking timer for setting a cooking time. An electric cooker in which a catalyst structure that decomposes smoke and odor contained in intake air and a catalyst heater that heats the catalyst structure to activate the catalyst structure are provided in the exhaust passage. And a downstream side of the catalyst heater.
While the catalyst structure is disposed on the catalyst heater.
A reflector for reflecting the radiant heat from the catalyst heater is provided on the flow side.
And an electric cooker for stopping the energization of the upper and lower heaters and the catalyst heater after the completion of the heating and continuing the energization of a fan motor which is a drive source of the intake fan for a predetermined time. . 2. Upper and lower heaters provided above and below the cooking device main body, an exhaust passage configured to guide air in the cooking device main body to the outside and having an intake fan, and a cooking timer for setting a cooking time. An electric cooker in which a catalyst structure that decomposes smoke and odor contained in intake air and a catalyst heater that heats the catalyst structure to activate the catalyst structure are provided in the exhaust passage. Wherein the heat of the catalyst heater is
A heat transfer means consisting of a good conductor to be transmitted to the catalyst structure is installed.
Kicking with, the upper bottom heater in after cooking completion
Electric cooker, characterized in that stops the power supply to motor and said catalyst heater continues the predetermined time energization of the fan motor as a drive source for the suction fan. 3. Upper and lower heaters provided above and below the cooker main body, an exhaust passage configured to guide air inside the cooker main body to the outside, and having an intake fan, and a cooking timer for setting a cooking time. And an electric cooker in which a catalyst structure for decomposing smoke and odor contained in intake air and a catalyst heater for heating the catalyst structure for activation are arranged in the exhaust passage. After completion of the heating and cooking, the power supply to the lower heater is stopped, and the power supply to the fan motor that is a drive source of the upper heater, the catalyst heater, and the intake fan is continued for a predetermined time. Electric cooker. 4. Upper and lower heaters provided above and below the cooker main body, an exhaust passage configured to guide air inside the cooker main body to the outside and having an intake fan, and a cooking timer for setting a cooking time. And an electric cooker in which a catalyst structure for decomposing smoke and odor contained in intake air and a catalyst heater for heating the catalyst structure for activation are arranged in the exhaust passage. When the heating and cooking are completed, energizing the upper and lower heaters is stopped, and energizing the catalyst heater and a fan motor that is a driving source of the intake fan is performed intermittently a predetermined number of times at predetermined intervals. An electric cooker characterized by the following. 5. The electric cooker according to claim 4, wherein a power supply interval to a fan motor as a drive source of the catalyst heater and the intake fan is made longer as time passes.