JP6857505B2 - Cooker - Google Patents

Description

The present invention relates to a cooker, particularly a cooker provided with a hot air circulation oven.

In recent years, a convection-type oven that utilizes the circulation of hot air has become widespread, and a cooking cooker in which a built-in gas stove is equipped with such an oven has been proposed.
As shown in FIG. 4, the oven chamber is provided with a combustion chamber (20) at the bottom where gas is burned by an oven burner (2) to generate combustion exhaust gas, and the food to be cooked is above the combustion chamber (20). A heating chamber (10) to be accommodated is provided. The combustion chamber (20) and the heating chamber (10) communicate with each other via a hot air passage (30) provided behind them, and an oven burner (2) is further behind the hot air passage (30). ) Is drawn into the combustion chamber (20) from the outside, and the hot air generated in the combustion chamber (20) is sent into the heating chamber (10) through the hot air passage (30) to be circulated. A circulation fan (31) is provided.

On the left and right sides of the rear wall (15) of the heating chamber (10), a large number of hot air outlet holes (15a) for sending the hot air sent from the hot air passage (30) into the heating chamber (10) are formed. In the center of the rear wall (15), a large number of hot air return holes (15b) are formed to return the hot air in the heating chamber (10) to the hot air passage (30).
Hot air rising from the combustion chamber (20) through the hot air passage (30) by the circulation fan (31) is introduced into the heating chamber (10) through the hot air outlet holes (15a) (15a) and the hot air return holes (15b). By circulating, the food to be cooked in the heating chamber (10) is indirectly cooked by hot air, causing uneven baking of the food to be cooked as compared with the one provided with a direct heating means such as a burner in the heating chamber. It is difficult to cook, and the inside of the object to be cooked can be baked evenly.
Further, behind the upper wall (12) of the heating chamber (10), a large number of exhaust holes (12a) are formed so as to communicate with the exhaust passage (5) connected to the exhaust outlet (50) that opens to the outside. There is.

The hot air sent from the hot air outlet holes (15a) (15a) into the heating chamber (10) circulates in the heating chamber (10), and a part of the hot air is returned from the hot air return hole (15b) to the hot air passage (30). ), And the other part is exhausted from the exhaust hole (12a) to the outside through the exhaust passage (5) and the exhaust outlet (50).
In the normal combustion state, high-temperature hot air (for example, 1000 ° C.) generated in the combustion chamber (20) and rising in the hot air passage (30) is introduced in the heating chamber (10) through the hot air outlet (15a). The temperature drops while circulating in the heating chamber (10), and in a state where the temperature has dropped (for example, 300 ° C.), the temperature is returned to the hot air passage (30) through the hot air return hole (15b). Therefore, the inside of the hot air passage (30) located behind the heating chamber (10) does not become excessively high, and the hot air at an appropriate temperature is stably distributed in the heating chamber (10). Can be circulated.

Japanese Unexamined Patent Publication No. 2013-64589 JP-A-2015-215132

However, since the hot air after circulating in the heating chamber (10) contains a large amount of oil smoke generated from the object to be cooked during cooking in the oven, the hot air return hole through which the hot air after circulating in the heating chamber (10) passes. In the formation area of (15b), the oil contained in the oil smoke, the roasted juice, and a part of the food to be cooked tend to adhere and accumulate. The hot air return hole (15b) is blocked by the progress of these accumulations or the adhesion of a part of the aluminum foil wrapping the object to be cooked to the formation area of the hot air return hole (15b). Then, it becomes difficult for the low-temperature hot air whose temperature has dropped from the heating chamber (10) to return to the hot air passage (30), and the smooth circulation of the hot air in the heating chamber (10) is prevented, and the hot air passage (30) is prevented. Heat is trapped inside and it becomes overheated.

In this way, when the circulation of hot air in the heating chamber (10) is blocked, the temperature distribution in the heating chamber (10) deteriorates, and the hot air blows out from the hot air passage (30) in the overheated state. It is blown out from (15a). As a result, the object to be cooked located near the hot air outlet (15a) in the heating chamber (10) is burnt, or is continuously heated in the oven for a long time, so that the rear wall (15) and the hot air passage (30) are heated. The fan motor (4) is overheated and deteriorated or burned out due to heat conduction of high-temperature hot air to the circulation fan (31), its rotating shaft (42), and the rotating shaft (42) located behind. There is a problem that it is done.
It is conceivable to provide a temperature sensor (36) behind the combustion chamber (20) that communicates with the hot air passage (30), but even if the hot air return hole (15b) is blocked, the exhaust outlet (50) and exhaust If the hole (12a) is not closed, the hot air from the combustion chamber (20) does not circulate in the heating chamber (10) through the hot air outlet hole (15a) and the hot air return hole (15b). Since the inside of the heating chamber (10) is short-circuited and flows from the exhaust hole (12a) to the exhaust outlet (50), the detection temperature of the temperature sensor (36) is unlikely to change. Therefore, the temperature sensor (36) cannot quickly detect the abnormal overheating of the hot air passage (30).

The present invention has been made in view of the above problems, and when a problem occurs in the hot air circulation function in a cooking cooker equipped with a hot air circulation type oven, it is covered by quickly detecting it. It is possible to prevent cooking failure due to poor distribution of hot air in the heating chamber in which the cooked food is stored, overheat deterioration and deformation of each part of the appliance caused by high-temperature hot air being trapped in the hot air passage, and further burning. An object of the present invention is to provide a cooking device.

The present invention taken to achieve the above object
The combustion chamber where the oven burner is arranged and
A heating chamber installed above the combustion chamber and accommodating the food to be cooked,
A hot air passage that communicates behind the combustion chamber and heating chamber and allows high-temperature hot air generated from the oven burner to flow,
It is installed behind the hot air passage and has a circulation fan that takes in outside air into the combustion chamber, draws the hot air in the combustion chamber into the hot air passage, and sends it into the heating chamber to circulate it.
On the rear wall of the heating chamber that separates the heating chamber and the hot air passage, a hot air outlet hole that sends the hot air in the hot air passage into the heating chamber and a hot air return hole that returns the hot air after circulating in the heating chamber to the hot air passage are formed. Being done
A cooking cooker in which a temperature detecting means is provided in the vicinity of the ceiling surface of the hot air passage, which is behind the rear wall of the heating chamber and above the hot air return hole.

After the hot air from the oven burner stored in the combustion chamber is blown into the heating chamber through the hot air passage behind the combustion chamber from the hot air outlet hole on the rear wall of the heating chamber located above the combustion chamber. , It is returned to the hot air passage from the hot air return hole. By repeating this, the object to be cooked in the heating chamber is cooked in the oven by the hot air circulating in the heating chamber. The hot air blown out from the hot air outlet into the heating chamber becomes lower than the temperature of the hot air generated from the oven burner while circulating in the heating chamber, and this relatively low temperature hot air is released from the hot air return hole. Since it is returned to the hot air passage, the temperature in the hot air passage located behind the rear wall of the heating chamber is maintained at a certain predetermined temperature.
However, oil and roasted juice from the food to be cooked, which are contained in the hot air, adhere to and accumulate in the hot air return holes, and a part of the aluminum foil used for cooking adheres to the hot air. When the return hole is closed, it becomes difficult for the hot air that has become cold in the heating chamber to return to the hot air passage, so that the temperature in the hot air passage located behind the rear wall of the heating chamber rises. Therefore, in the hot air passage, a temperature detecting means is provided at a predetermined place located behind the rear wall of the heating chamber, and the increase in the detection temperature of the temperature detecting means causes the user to block the hot air return hole or the like. It is possible to quickly find out the malfunction of the hot air circulation function.
Further, during cooking, oil smoke is also circulated from the hot air return hole to the hot air passage due to the circulation of hot air. Therefore, if a temperature detecting means is provided so as to face the hot air return hole, the temperature detecting means is contaminated by the oil smoke. There is a risk that the temperature cannot be detected properly. However, in this case, since the temperature detecting means is arranged near the ceiling surface above the hot air return hole, it is possible to prevent the oil smoke passing through the hot air return hole from adhering to the temperature detecting means.
In addition, the hot air generated in the combustion chamber is pulled by the circulation fan into the hot air passage and rises as it is. Therefore, if a problem occurs in the circulation function, heat tends to be trapped near the ceiling surface of the hot air passage, and the temperature rises most. Easy to do. Therefore, by installing the temperature detecting means near the ceiling surface, abnormal overheating in the hot air passage can be detected more quickly.

In the heating cooker, preferably, between the front Stories temperature detecting means and the rear wall of the heating chamber, the protective wall is provided.
By providing the protective wall between the back wall of temperature sensing means and the heating chamber, the mist of oil and salt of smoke coming fed with hot air from the hot air return hole is deposited adhering to the temperature sensing means Can be prevented. As a result, the sensitivity of the temperature detecting means can be maintained, and deterioration and failure of the temperature detecting means can be prevented.

In the cooking cooker, preferably, when the temperature detected by the temperature detecting means exceeds a threshold value for determining abnormal overheating, an abnormal overheating notifying means for notifying the user is provided. In this cooking, the user is notified that an abnormality has occurred in the circulatory function in the heating chamber by voice, buzzer, or a notification means such as a display, thereby encouraging cleaning, and cooking due to poor distribution of hot air in the heating chamber. You can prevent the failure of.

Further, in the heating cooker, preferably, when the temperature detected by the temperature detecting means exceeds the threshold value for determining abnormal overheating, the supply of gas to the oven burner is cut off and hot air is generated in the combustion chamber. If the combustion stop means for stopping the combustion is provided, the combustion operation is automatically stopped in the event of an abnormality, so that damage to the appliance can be prevented.

In the cooking cooker, preferably, even if the combustion stopping means is activated, the rotation of the circulation fan is controlled to continue until the temperature detected by the temperature detecting means drops to a predetermined temperature. ..
Even if the combustion stop function is activated and the combustion operation of the oven burner is stopped, the circulation fan is controlled to continue rotating, so that fresh air from the outside is taken into the combustion chamber and the heating chamber is passed through the hot air passage. And can continue to flow to the installation part of the fan motor. This promotes cooling of the hot air passage, the heating chamber, the fan motor, and the like.

As described above, according to the present invention, it is possible to quickly detect a malfunction of the circulation function due to the blockage of the hot air return hole due to a rapid rise in the detection temperature by the temperature detecting means, so that the hot air passage can be detected. It is possible to prevent deterioration of the distribution of hot air in the heating chamber due to abnormal overheating, near hot air outlet holes and hot air return holes in the rear wall of the heating chamber that is directly affected by hot air, or abnormal overheating of the fan motor. .. Therefore, according to the present invention, it is possible to reliably prevent the failure of cooking of the object to be cooked, the overheat deterioration and overheat deformation of each part of the utensil, and the burning.

It is a vertical sectional view of the cooking apparatus in embodiment of this invention. It is a cross-sectional perspective view which shows the rear part region of the cooking apparatus in embodiment of this invention. It is a flowchart which shows the combustion function of the cooking apparatus which concerns on embodiment of this invention. It is a vertical cross-sectional perspective view which shows the conventional cooking apparatus.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 1, in the cooking cooker of the embodiment of the present invention, the main body case (100) is dropped into the opening (51a) of the countertop (51) of the system kitchen, and the upper open end thereof is dropped. It is incorporated into a built-in gas stove that is installed by locking the flange (110) to the periphery of the opening (51a).

By opening and closing the door (43) provided on the front of the main body case (100) located below the countertop (51), the heating chamber (10) as an oven is opened and closed, and the inside is cooked. You can put things in and out.
As the cooking cooker in this embodiment, a cooking cooker having substantially the same structure as the conventional cooking cooker shown in FIG. 4 can be adopted, and therefore, the same reference numerals are given to the common parts. The front side of the main body case (100) provided with the door (43) is referred to as the front side, the back side is referred to as the rear side, the width direction of the main body case (100) is referred to as the left-right direction, and the height direction is referred to as the vertical direction.

The heating chamber (10) has an upper wall (12) forming a ceiling portion and a large number of exhaust holes (12a) leading to the exhaust passage (5), and an upper plate (20) of the lower combustion chamber (20). A lower wall (13) provided along 22), left and right side walls (14), and a rear wall (15a) (15a) and a rear wall (15b) having a large number of hot air outlet holes (15a) (15a) and hot air return holes (15b). It is a box-shaped body having 15) and is opened forward by pulling out the door (43) forward, and an oven-cooked object such as bread, cake or gratin or roast chicken is placed on it. The plate (52) (see FIG. 4) can be housed in the heating chamber (10).

The combustion chamber (20) houses the oven burner (2) in the space surrounded by the upper plate (22), the lower plate (23), and the left and right side plates (24), and the oven burner (2). The rear part where the flame of) is ejected communicates with the hot air passage (30) described later.
Further, on the front surface of the combustion chamber (20), an air supply port (21) for taking in outside air is formed.

The hot air passage (30) consists of a hot air passage case (3) whose lower part opens to the combustion chamber (20), and behind it, outside air is taken into the combustion chamber (20) from the air supply port (21). A circulation fan case (41) in which the circulation fan (31) is housed and a motor (4) for rotating the circulation fan (31) via a rotation shaft (42) are provided.
As described above, the rotary drive of the circulation fan (31) by the motor (4) takes in external air from the air supply port (21) into the combustion chamber (20), and at the same time, the oven in the combustion chamber (20). The hot air of the combustion exhaust gas generated from the burner (2) is pulled into the hot air passage (30) and rises, and the hot air outlet holes (15a) (15a) formed in the rear wall (15) of the heating chamber (10). ) And the hot air return hole (15b), it circulates in the heating chamber (10).

As shown in FIG. 2, the hot air passage (30) is surrounded by a hot air passage case (3) that opens to the lower combustion chamber (20), and is the central portion of the rear wall (15) of the heating chamber (10). In the range surrounded by the hot air passage case (3), a large number of hot air return holes (15b) for returning the hot air in the heating chamber (10) to the hot air passage (30) are formed, and both sides thereof. In the range outside the hot air passage case (3), there are a large number of hot air outlet holes (15a) (15a) for blowing out the hot air sent from the combustion chamber (20) to the heating chamber (10). Each is formed.
A tubular body (3a) is projected in the area surrounding the hot air return hole (15b) in the center of the rear surface of the rear wall (15), and an opening is provided on the rear surface of the corresponding hot air passage case (3). (3b) is open.

Further behind the hot air passage case (3), the left and right hot air outlet holes (15a) (15a) and the hot air passage case (3) of the rear wall (15) of the heating chamber (10) are surrounded and opened from the rear. A circular fan case (41) having a substantially U-shaped plan view in which an opening (32a) is formed at a position corresponding to (3b) is attached. The rear surface of the circulation fan case (41) is closed except for the insertion portion through which the rotating shaft (42) of the motor (4) is inserted. As a result, the hot air passages (30) are communicated with each other through the openings (3b) and (32a), and the hot air outlet holes (15a) (15a) provided on the left and right sides of the rear wall (15) of the heating chamber (10). ) Is formed as a circulation passage (40). The circulation fan (31) described above is arranged in the circulation passage (40).

A motor case (44) for accommodating the motor (4) is located behind the circulation fan case (41), and between the circulation fan case (41) and the motor case (44). A cooling fan case (45) containing a cooling fan (32) provided coaxially with the circulation fan (31) is provided so as to communicate with each of these.
An air introduction hole (44a) for taking in air from the outside is formed behind the motor case (44).

In this embodiment, as shown in FIG. 1, a temperature detection sensor (1) is provided as a temperature detection means at the center of the ceiling surface of the hot air passage case (3) so as to hang down. A protective wall (11) is hung between the temperature detection sensor (1) and the area where the hot air blowback hole (15b) is formed on the rear wall (15).
The temperature detection sensor (1) detects the temperature in the hot air passage (30), and the detection signal is output to a control device (not shown).
The control device is built in the main body case (100), and when the temperature detected by the temperature detection sensor (1) exceeds the threshold value of 500 ° C., an abnormality is caused to the user by voice, liquid crystal display, etc. It is equipped with an abnormality notification means for notifying the temperature, a combustion stopping means for stopping the combustion operation of the oven burner (2), and the like.

In the heating cooker of this embodiment, when the power switch (not shown) of the oven chamber provided on the front surface of the main body case (100) is turned on, the circulation fan (31) is rotationally driven and at the same time the oven burner is turned on. (2) is ignited, fresh air as secondary combustion air is taken into the combustion chamber (20) from the air supply port (21) in front of the combustion chamber (20), and the oven burner (2) is burned. Starts.
The hot air generated by the combustion of the oven burner (2) rises in the hot air passage case (3) by the circulation fan (31), and also from the hot air passage (30) through the opening (3b) to the circulation passage (30). Flow to 40). The circulation fan case (41) constituting the circulation passage (40) is formed so as to communicate with the heating chamber (10) through the hot air outlet holes (15a) (15a) of the rear wall (15). Therefore, the hot air is sent into the heating chamber (10) from the hot air outlet holes (15a) (15a). A part of the hot air sent into the heating chamber (10) is returned to the hot air passage (30) through the hot air return hole (15b) after heating the object to be cooked in the heating chamber (10). Then, it is blown again into the heating chamber (10) from the circulation passage (40) through the hot air outlet holes (15a) and (15a).
As described above, in normal combustion, hot air circulates between the heating chamber (10), the hot air passage (30), and the circulation passage (40), so that the hot air rising from the combustion chamber (20) and the high temperature hot air The relatively low temperature hot air returned after circulating in the heating chamber (10) will be mixed, and the temperature suitable for indirectly cooking the object to be cooked in the heating chamber (10). Can be heated with.
The other part of the hot air blown into the heating chamber (10) is discharged to the outside from the exhaust outlet (50) through the exhaust hole (12a) through the exhaust passage (5).

A temperature detection sensor (1) is installed in the hot air passage (30) located behind the hot air return hole (15b) of the rear wall (15), and detects the temperature in the hot air passage (30). Can be done.
The hot air returned from the heating chamber (10) to the hot air passage (30) through the hot air return hole (15b) contains mist-like oil and salt, but the temperature detection sensor (1) Is arranged on the ceiling surface above the hot air return hole (15b), and a protective wall (11) is provided between the temperature detection sensor (1) and the hot air return hole (15b). , It is possible to prevent these oils and salts from directly adhering to the temperature detection sensor (1). In this way, by preventing oil, salt, etc. from adhering to and accumulating on the temperature detection sensor (1), the sensitivity of the temperature detection sensor (1) can be maintained, and deterioration and failure can be prevented. Can be done.

Hereinafter, in the cooking cooker according to the embodiment of the present invention, the combustion operation of the hot air circulation type oven and the judgment operation of abnormal combustion due to a malfunction of the circulation function caused by the blockage of the hot air return hole (15b) and the like are described. This will be described according to the flowchart of FIG.
In this embodiment, by operating the power switch to turn on the power, the main control program of the control device is started, and the control operation described below becomes executable.

When the power switch (not shown) of the oven is ignited, the circulation fan (31) operates at a set rotation speed. As a result, external fresh air is taken into the combustion chamber (20) from the air supply port (21) as secondary air, and the set amount is set in the oven burner (2) together with the air around the gas supply port (primary air). Gas is supplied, and the oven burner (2) is ignited by the spark discharge from the spark plug (25) (S1 to S3).

After the oven burner (2) is ignited, the detection temperature T1 of the temperature detection sensor (1) is a preset reference value as the reference temperature of the hot air passage (30) until the fire extinguishing operation is performed by the user. (For example, 400 ° C.) is exceeded, and it is monitored whether or not the threshold value t (for example, 500 ° C.) for recognizing an abnormal overheating state is exceeded (S4).
If the state where the detection temperature T1 is below the threshold value t continues (No in the step of S4), the heating chamber (10) and the hot air are passed through the hot air outlet holes (15a) (15a) and the hot air return holes (15b). Assuming that the hot air circulation function with the passage (30) is normally performed, the cooking operation is continued. After that, if the fire extinguishing operation is performed by the burner operation unit or the preset predetermined heating time has elapsed (Yes in step S5), the supply of gas to the oven burner (2) is cut off and the oven is ovened. After the burner (2) is extinguished (S6), the circulation fan (31) is stopped (S7), and then the process returns to step 1 (S1).

After the oven burner (2) is ignited, if the detected temperature T1 in the hot air passage (30) becomes higher than the threshold value t indicating abnormal overheating (Yes in step S4), it is heated in the heating chamber (10). The hot air return hole (15b) is blocked by the burning juice from the cooked food, oily smoke containing oil, and a part of the aluminum foil surrounding the cooked food adhering to the rear wall (15). Therefore, it is determined that a problem has occurred in the circulation function of hot air in the heating chamber (10), and in the next step 8 (S8), the combustion stopping means functions to supply gas to the oven burner (2). Is stopped and an automatic fire extinguishing operation is performed to forcibly extinguish the oven burner (2).
Then, almost at the same time, in step 9 (S9), the notification operation by the abnormal overheat notification means is executed, and the voice output unit (not shown) notifies by voice that the hot air circulation function is abnormal. At the same time, it is displayed on the display unit (not shown).
Either of the automatic fire extinguishing operation by the combustion stop means and the notification operation by the abnormal overheat notification means may function first.

Even if the combustion of the oven burner (2) is stopped and the generation of hot air is stopped, the circulation fan (31) is not stopped and is controlled to keep rotating. Air can be continuously taken into the hot air passage (30) through the combustion chamber (20), and the cooling of the heating chamber (10) and the fan motor (4) communicating with the hot air passage (30) is promoted. Can be done.

When the detection temperature T1 detected by the temperature detection sensor (1) drops below the predetermined temperature T2 (for example, 100 ° C.), which is safe even if you put your hands in it (Yes in step S10), it circulates due to cooling with fresh air. The fan (31) is stopped (S7), and the process returns to the step of S1.
Even if the combustion of the oven burner (2) is stopped in the step S9, the circulation fan (31) is not stopped, so that the inside of the heating chamber (10) is safe while the circulation fan (31) is operating. The user can know that the temperature range has not been reached. Since the circulation fan (31) is set to stop rotating when the temperature T1 detected by the temperature detection sensor (1) drops below a predetermined temperature T2 that is safe for the user, the circulation fan (31) is set to stop. ), If the user cleans the rear wall (15) of the heating chamber (10), the inside of the heating chamber (10) can be safely cleaned without being burned by hot air. You can.

As described above, in the heating cooker according to the embodiment of the present invention, the temperature detection sensor (1) is suspended from the central portion of the ceiling surface of the hot air passage (30), so that the temperature detection sensor (1) is sent from the combustion chamber (20). It is possible to detect the temperature of the hot air that is a mixture of the hot air that comes in and the relatively low temperature hot air that has circulated in the heating chamber (10), and the hot air return hole (15b) is blocked. Then, when the low-temperature hot air is no longer sent into the hot air passage (30), the hot air passage (30) rises from the combustion chamber (20) and the temperature of the high-temperature hot air reaching the ceiling surface is accurately detected. Can be done. By being able to quickly detect an increase in the temperature of the hot air passage (30), it is possible to promptly notify the user of a malfunction in the circulatory function by the abnormal overheat notification means.

In the above embodiment, since the temperature detection sensor (1) is provided behind the hot air return hole (15b), the hot air flowing from the hot air return hole (15b) into the hot air passage (30). The temperature detection sensor (1) is placed on the ceiling surface above the hot air return hole (15b) in order to prevent deterioration and failure due to the mist-like oil and salt contained in the temperature detecting means adhering to the temperature detecting means. Along with the installation, a protective wall (11) is hung between the temperature detection sensor (1) and the rear wall (15), but the temperature detection sensor (1) is on the ceiling surface of the hot air passage (30). It may be configured to be provided on either the left or right side of the. In this case, as in the case of arranging it in the central part of the ceiling surface, abnormal overheating of the temperature of the hot air in the hot air passage (30) can be quickly detected, and oil smoke from the heating chamber (10) can be detected. Since the contained oil and salt do not directly adhere to the temperature detection sensor (1), it is not always necessary to provide the protective wall (11).

In addition, abnormal overheating of the hot air passage (30) can be notified to the user by means of notification by voice or display, and it is okay if the temperature inside the heating chamber (10) after automatic fire extinguishing is changed. Since it is possible to notify that the temperature has decreased to a certain extent by stopping the circulation fan (31), the safety when cleaning the inside of the heating chamber (10) can be guaranteed, and it is easy to use and safe. An expensive cooker can be provided.

(1) ・ ・ ・ ・ ・ ・ ・ ・ ・ Temperature detection means
(10) ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Heating room
(15) ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Rear wall
(15a) ・ ・ ・ ・ ・ ・ ・ ・ Hot air outlet
(15b) ・ ・ ・ ・ ・ ・ ・ ・ Hot air return hole
(20) ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Combustion chamber
(2) ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Oven burner
(30) ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Hot air passage
(31) ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Circulation fan

Claims (5)

The combustion chamber where the oven burner is arranged and
A heating chamber installed above the combustion chamber and accommodating the food to be cooked,
A hot air passage that communicates behind the combustion chamber and heating chamber and allows high-temperature hot air generated from the oven burner to flow,
It is installed behind the hot air passage and has a circulation fan that takes in outside air into the combustion chamber, draws the hot air in the combustion chamber into the hot air passage, and sends it into the heating chamber to circulate it.
On the rear wall of the heating chamber that separates the heating chamber and the hot air passage, a hot air outlet hole that sends the hot air in the hot air passage into the heating chamber and a hot air return hole that returns the hot air after circulating in the heating chamber to the hot air passage are formed. Being done
A cooking device in which a temperature detecting means is provided in the vicinity of the ceiling surface of the hot air passage, which is behind the rear wall of the heating chamber and above the hot air return hole. In the cooking apparatus according to claim 1,
Between the front Stories temperature detecting means and the rear wall of the heating chamber, the cooking device of the protective wall is provided. In the cooking device according to claim 1 or 2.
A cooking device provided with an abnormal overheat notification means for notifying the user when the temperature detected by the temperature detecting means exceeds a threshold value for determining abnormal overheating. In the cooking apparatus according to any one of claims 1 to 3,
When the temperature detected by the temperature detecting means exceeds the threshold value for determining abnormal overheating, a combustion stopping means is provided to cut off the supply of gas to the oven burner to stop the generation of hot air in the combustion chamber. Cooker. In the cooking device according to claim 4.
A cooking device in which even if the combustion stopping means is activated, the rotation of the circulation fan is controlled to continue until the temperature detected by the temperature detecting means drops to a predetermined temperature.

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