JP6920910B2 - Grill device - Google Patents

Description

The present invention relates to a grill device for cooking roasted foods and the like.

Conventionally, there is a grill device in which the front opening of the grill storage is closed by a grill door so as to be openable and closable, and the grill plate connected to the grill door is pulled out from the grill storage by grasping and pulling the grill door. In this type of grill device, if the grill door is not completely closed during heating, a sufficient temperature rise cannot be obtained, which may lead to cooking failure.

Therefore, as this type of grill device, one that determines the open / closed state of the grill door based on the detection result of the temperature sensor installed inside the grill storage is known (see, for example, Patent Document 1).

In the grill device described in Patent Document 1, temperature sensors are installed at positions near the heating portion inside the grill and at positions near the exhaust port, and the difference in the detected temperatures of the temperature sensors is equal to or greater than a predetermined value. If there is, it is determined that the grill door is in the closed state, and if it is less than a predetermined value, it is determined that the grill door is in the open state.

Japanese Unexamined Patent Publication No. 2004-121378

However, in the grill device described in Patent Document 1, since all the temperature sensors are installed inside the grill chamber, there is a problem that the difference between the detected temperatures is not so large and it is difficult to make an accurate determination. rice field.

The present invention has been made in view of the above points, and an object of the present invention is to provide a grill device capable of accurately determining the opening / closing of a grill door.

In order to achieve the above object, the grill device of the present invention
A grill device including a grill storage having a heating portion inside, a grill door for opening and closing the front opening of the grill storage so as to be openable and closable, and an apparatus main body accommodating the grill storage .
A first temperature sensor installed inside of the grill box, exposed to the outside of the apparatus main body, the grill door is installed so as to be located above the grill door when closed, the grill door A second temperature sensor that detects the room temperature when the grill is closed and detects heat from the inside of the grill when the grill door is open, and the first temperature sensor and the second temperature. A control unit that determines the opening / closing of the grill door based on the detection result of the sensor is provided.
The control unit is characterized in that when the difference between the detection temperature of the first temperature sensor and the detection temperature of the second temperature sensor becomes equal to or less than a predetermined value, the grill door is determined to be in the open state. And.

In the grill device of the present invention configured in this way, when the grill door is opened, the heat inside the refrigerator is released to the outside, and the heat causes the detection temperature of the second temperature sensor outside the refrigerator to suddenly rise. Ascend to. On the other hand, the temperature inside the refrigerator is lowered due to the release of heat, and the temperature detected by the first temperature sensor is also lowered accordingly.

Therefore, when the grill door is opened, the temperature difference between the detection temperature of the first temperature sensor and the detection temperature of the second temperature sensor also changes so as to sharply decrease. Then, the control unit determines the open / closed state of the grill door based on the rapidly changing parameters.

Further, since the second temperature sensor 20 is installed outside the refrigerator, the room temperature (low temperature) is detected when the grill door 11 is in the closed state. Therefore, when the grill door is opened, the second temperature sensor sensitively reacts to the heat released from the inside of the refrigerator (that is, high-temperature air) regardless of the degree of opening and closing of the grill door.

Therefore, according to the grill device of the present invention, the control unit determines the open / closed state of the grill door based on the parameter having a large change speed, and the second temperature sensor reacts sensitively by arranging the grill door outside the refrigerator. Therefore, it is possible to accurately detect the opening and closing of the grill door.

Further, in the grill device of the present invention,
It is equipped with a notification unit that notifies the user that the grill door is in the open state.
When the control unit determines that the grill door is in the open state, it is preferable to notify the grill door that the grill door is in the open state via the notification unit.

When such a notification unit is provided, the user can easily recognize that the grill door is in the open state, so that it becomes easy to prevent a cooking failure or the like.

Further, in the grill device of the present invention,
It is preferable that the control unit stops the heating of the grill storage by the heating unit when the determination that the grill door is in the open state is continued for a predetermined time.

The user may intentionally open the grill door during heating to check the condition of the cooked food. In such a case, if the heating is stopped immediately even if the grill door is determined to be in the open state, stable cooking may be difficult. Therefore, if the heating is stopped when the determination of the open state continues for a predetermined time, it becomes easy to detect only the open state not intended by the user.

Further, in the grill device of the present invention,
It is preferable that the control unit starts determining the opening / closing of the grill door after a predetermined time has elapsed from the start of heating by the heating unit.

Immediately after the start of heating, the temperature inside the refrigerator does not rise sufficiently, so that the temperature difference between the temperature detected by the first temperature sensor inside the refrigerator and the temperature detected by the second temperature sensor outside the refrigerator is small. Therefore, if the determination is made based on the small temperature difference, an erroneous determination may occur. Therefore, if the determination is made after a predetermined time has elapsed from the start of heating, the determination is performed after a sufficient temperature difference occurs, so that erroneous determination can be prevented.

The vertical sectional schematic view of the gas stove provided with the grill which concerns on embodiment. The block diagram which shows the structure of the control part of the grill of FIG. The flowchart which shows the process performed by the control part provided in the grill of FIG.

Hereinafter, the grill 1 (grill device) according to the embodiment will be described with reference to the drawings.

First, a schematic configuration of the grill 1 will be described with reference to FIGS. 1 and 2.

As shown in FIG. 1, the grill 1 is incorporated in a gas stove 2 which is configured as a part of a system kitchen.

The gas stove 2 includes a stove body 3 that houses the grill 1 and a top plate 4 that covers the upper part of the stove body 3. The stove body 3 is mounted in a state of being dropped into the stove opening 6 formed in the counter 5 of the system kitchen. The top plate 4 is exposed on the counter 5 and covers the upper part of the stove body 3.

A trivet 7 is placed on the upper surface of the top plate 4. The stove burner 8 faces the burner opening (not shown) provided below the trivet 7 on the top plate 4. The stove burner 8 heats a cooking container such as a pot placed on the trivet 7 by the heat of gas combustion. An exhaust port 9 is provided at the rear of the upper surface of the top plate 4.

The grill 1 includes a grill storage 10, a grill door 11 that rotatably closes the front opening of the grill storage 10, and an exhaust duct 12 that communicates with the grill storage 10. Inside the grill storage 10, a grill 13 on which a cooked food W such as fish is placed and a soup saucer 14 that receives the grilled juice or the like discharged from the cooked food W below the grill 13 are housed.

The exhaust duct 12 extends rearward from the upper part of the rear end of the grill storage 10 and diagonally upward, and the upper end thereof faces the exhaust port 9 at the rear part of the upper surface of the top plate 4. The combustion exhaust generated inside the grill storage 10 is led out to the outside of the gas stove 2 through the exhaust duct 12.

In the grill storage 10, as grill burners, the upper fire burner 15 (heating part) arranged on the ceiling of the grill storage 10 and the lower part of both side portions in the lateral direction of the grill storage 10 (the part lower than the grill 13). An arranged lower fire burner 16 (heating unit) is provided. The cooked food W placed on the grill 13 is heated from above and below by the upper heat burner 15 and the lower heat burner 16, whereby the cooked food is cooked.

The upper heat burner 15 and the lower heat burner 16 are controlled by a control unit 17 installed inside the counter 5. The control unit 17 is composed of one or a plurality of electronic circuit units including a CPU, RAM, ROM, an interface circuit, and the like.

As shown in FIG. 2, the control unit 17 includes a heating control unit 17a that controls combustion of the upper heat burner 15 and the lower heat burner 16 and a grill door 11 as functions realized by the implemented hardware configuration or program. It is provided with an open / close determination unit 17b for determining the open / closed state of the door and a notification control unit 17c for controlling notification to the user.

The heating control unit 17a is an instruction from the user or an open / close determination unit input via an input unit 18 (not shown in FIG. 1) such as a touch panel or an operation button provided on the counter 5 or the top plate 4. Based on the determination result of 17b, the ignition and digestion of the upper heat burner 15 and the lower heat burner 16 are controlled.

The open / close determination unit 17b grills the grill based on the detection temperature of the first temperature sensor 19 installed inside the grill 10 and the detection temperature of the second temperature sensor 20 installed outside the grill 10. The open / closed state of the door 11 is determined.

The notification control unit 17c notifies the user via the screen display 21 (notification unit) and the buzzer 22 (notification unit) based on the determination result of the open / close determination unit 17b.

The screen display 21 displays not only a display indicating the open / closed state but also various information (cooking menu, heating time, etc.). The screen display 21 is configured by using a dot matrix type liquid crystal display, an organic electroluminescence (organic EL), a light emitting diode (LED) display device, a fluorescent display tube (VFD), and the like.

Returning to FIG. 1, the first temperature sensor 19 is installed at a position facing the exhaust duct 12 of the grill storage 10. As a result, the first temperature sensor 19 detects the temperature inside the grill storage 10 regardless of whether it is in the closed state or the open state.

The second temperature sensor 20 is installed below the counter 5 and above the closed grill door 11. As a result, the second temperature sensor 20 detects the room temperature in the closed state and detects the heat leaked from the inside of the grill storage 10 in the open state.

Since the heated air tends to flow above the grill door 11 when the grill door 11 is opened, the second temperature sensor 20 is installed above the grill door 11 in the grill 1. The detection accuracy of the temperature sensor 20 is improved.

However, the installation position of the second temperature sensor of the present invention is not limited to the above position, and is installed at a position where heat from the inside of the grill storage can be detected when the grill door is opened. It suffices if it is done. For example, it may be installed on the side or below the closed grill door.

Here, with reference to FIGS. 2 and 3, a process performed by the control unit 17 in order to determine the open / closed state of the grill storage 10 will be described. Note that FIG. 3 is a flowchart showing the processing performed by the control unit 17.

First, the heating control unit 17a ignites the upper heat burner 15 and the lower heat burner 16 based on the instruction from the user, and starts heating (FIG. 3 / STEP01).

At this time, the open / close determination unit 17b counts the time elapsed from the time of ignition (FIG. 3 / STEP02).

Next, the open / close determination unit 17b determines whether or not 180 seconds have elapsed (FIG. 3 / STEP03).

As described above, the grill 1 is configured to determine the opening / closing of the grill door 11 (the process of STEP 04 described later) after a predetermined time has elapsed from the start of heating (that is, after the processes of STEP 02 and STEP 03 are executed). ing.

This is because the temperature inside the grill cabinet 10 does not rise sufficiently immediately after the start of heating, and the temperature difference between the temperature detected by the first temperature sensor 19 inside the refrigerator and the temperature detected by the second temperature sensor 20 outside the refrigerator is small. Therefore, the determination made based on the temperature difference may not be made accurately.

The time until the determination of the open / closed state is started is determined by the heating mechanism (for example, the upper heat burner 15 and the lower heat burner 16) and the sensor for detecting the temperature inside the refrigerator (for example, the first temperature sensor 19). It may be appropriately changed depending on the installation position, the size of the space inside the grill storage 10, and the like.

For example, when the space inside the grill storage 10 is sufficiently small, the time required to start the determination of the open / closed state may be shorter than 180 seconds, or the determination of the open / closed state is started at the same time as the start of heating. You may do so.

Returning to the explanation of the process performed by the control unit 17, if 180 seconds have not passed (NO in STEP03), the open / close determination unit 17b does not start the open / close determination of the grill door 11 and returns to STEP03. It returns and repeats the determination of whether or not 180 seconds have passed.

On the other hand, when 180 seconds have passed (YES in STEP 03), the open / close determination unit 17b determines the opening / closing of the grill door 11 by detecting the temperature detected by the first temperature sensor 19 and the second temperature sensor. The 20 detected temperatures are recognized, and it is determined whether or not the temperature difference between them is 40 ° C. or less (FIG. 3 / STEP04).

When the temperature difference is 40 ° C. or less, the open / close determination unit 17b determines that the grill door 11 is in the open state. Here, the determination method will be described.

In the grill 1, when the grill door 11 is opened, the heat inside the refrigerator is released to the outside. At this time, the temperature outside the refrigerator (specifically, the temperature in the region near the grill door 11 in the closed state) rises sharply due to the released heat. As a result, the detection temperature of the second temperature sensor 20 installed above the grill door 11 in the closed state rises sharply from room temperature. On the other hand, the temperature inside the refrigerator is lowered because the heat inside the refrigerator is released to the outside. As a result, the detection temperature of the first temperature sensor 19 installed in the refrigerator is lowered.

As a result, when the grill door 11 is opened, the temperature difference between the detection temperature of the first temperature sensor 19 and the detection temperature of the second temperature sensor 20 changes so as to be small. Therefore, when the temperature difference becomes a predetermined value (40 ° C. for the grill 1) or less, it can be estimated that the grill door 11 is in the open state.

By the way, since the second temperature sensor 20 is installed outside the refrigerator, the room temperature (low temperature) is detected when the grill door 11 is in the closed state. Therefore, when the grill door 11 is opened, the second temperature sensor 20 releases heat (that is, high temperature) from the inside of the refrigerator regardless of the degree of opening / closing of the grill door 11 (for example, even if it is half-opened). It reacts sensitively to the air).

Further, the temperature difference between the detection temperature of the first temperature sensor 19 and the detection temperature of the second temperature sensor 20 is a parameter having a large change rate because the detection temperature of the second temperature sensor 20 changes abruptly. ing.

That is, in the determination made by the open / close determination unit 17b of the control unit 17, the temperature difference as a reference for determining the open state is a parameter having a large change rate, and the detection temperature as a reference for the temperature difference. One is detected by the second temperature sensor 20 that reacts sensitively, so that it is accurate and quick.

In the grill 1, when the temperature difference becomes 40 ° C. or less, it is determined that the grill 1 is in the open state, but the temperature difference as a reference for determining the open state is limited to 40 ° C. is not it. For example, when the heating temperature instructed by the user is low, the reference temperature difference may be changed according to the heating temperature, such as making the temperature difference lower than 40 ° C.

Returning to the explanation of the processing performed by the control unit 17, if the temperature difference exceeds 40 ° C. (NO in STEP04), the open / close determination unit 17b determines that the grill door 11 is in the closed state, and again. , STEP04 is returned, and the determination of whether or not the temperature difference is 40 ° C. or less is repeated.

On the other hand, when the temperature difference is 40 ° C. or less (YES in STEP04), the open / close determination unit 17b determines that the grill door 11 is in the open state, and the notification control unit 17c recognizes the determination result. Notifies that it is in the open state (FIG. 3 / STEP05).

Specifically, the notification control unit 17c displays the open state via the screen display 21 and generates a warning sound via the buzzer 22 to notify the user that the open state is present. do.

The method of notification is not limited to the above method, and other methods may be used as long as the user can recognize the open state. Further, unlike the process described later, if the configuration is such that the heating is stopped immediately when it is recognized that the state is open, the notification does not have to be performed.

When it is determined that the grill door 11 is in the open state, the open / close determination unit 17b counts the time elapsed from the time when it is determined that the grill door 11 is in the open state (FIG. 3 / STEP06).

Next, the open / close determination unit 17b recognizes the detection temperature of the first temperature sensor 19 and the detection temperature of the second temperature sensor 20 again, and determines whether or not the temperature difference between them is 40 ° C. or less (FIG. 3 / STEP07).

When the temperature difference exceeds 40 ° C. (NO in STEP07), the open / close determination unit 17b determines that the grill door 11 is in the closed state, and the notification control unit 17c that recognizes the determination result determines that the grill door 11 is in the closed state. Notifies that it is in a closed state (Fig. 3 / STEP08).

Specifically, the notification control unit 17c erases the display indicating that it is in the open state via the screen display 21, stops the warning sound generated via the buzzer 22, and closes it to the user. Notify that it is in a state.

After that, the open / close determination unit 17b returns to STEP04 again, and repeats the determination of whether or not the temperature difference is 40 ° C. or less (that is, whether or not the grill door 11 is opened again).

On the other hand, when the temperature difference is 40 ° C. or less (YES in STEP07), the open / close determination unit 17b determines whether or not 20 seconds have passed (FIG. 3 / STEP09).

If 20 seconds have not passed (NO in STEP09), the open / close determination unit 17b returns to STEP09 again and repeats the determination of whether or not 20 seconds have passed.

On the other hand, when 20 seconds have passed (YES in STEP09), the heating control unit 17a extinguishes the upper heat burner 15 and the lower heat burner 16, stops heating, and ends the current process. (Fig. 3 / STEP10).

As described above, the grill 1 is configured to stop heating after a predetermined time has elapsed from the determination that the grill 1 is in the open state (that is, after the processes of STEP06 to STEP09 are executed).

This is because the user may intentionally open the grill door 11 during heating to check the state of the cooked food W, etc., so even if it is determined that the grill door 11 is in the open state, it is immediately. This is because if the heating is stopped, it may be difficult to perform stable cooking.

The time until the heating is stopped may be appropriately changed according to the size of the space inside the grill storage 10.

1 ... Grill (grill device), 2 ... Gas stove, 3 ... Stove body, 4 ... Top plate, 5 ... Counter, 6 ... Stove opening, 7 ... Gotoku, 8 ... Stove burner, 10 ... Grill storage, 11 ... Grill door , 12 ... Exhaust duct, 13 ... Grill net, 14 ... Juice saucer, 15 ... Top heat burner (heating part), 16 ... Bottom heat burner (heating part), 17 ... Control unit, 17a ... Heating control unit, 17b ... Opening and closing Judgment unit, 17c ... Notification control unit, 18 ... Input unit, 19 ... First temperature sensor, 20 ... Second temperature sensor, 21 ... Screen display (notification unit), 22 ... Buzzer (notification unit), W ... Cooking ..

Claims (4)

A grill device including a grill storage having a heating portion inside, a grill door for opening and closing the front opening of the grill storage so as to be openable and closable, and an apparatus main body accommodating the grill storage .
A first temperature sensor installed inside of the grill box, exposed to the outside of the apparatus main body, the grill door is installed so as to be located above the grill door when closed, the grill door A second temperature sensor that detects the room temperature when the grill is closed and detects heat from the inside of the grill when the grill door is open, and the first temperature sensor and the second temperature. A control unit that determines the opening / closing of the grill door based on the detection result of the sensor is provided.
The control unit is characterized in that when the difference between the detection temperature of the first temperature sensor and the detection temperature of the second temperature sensor becomes equal to or less than a predetermined value, the grill door is determined to be in the open state. Grill device. In the grill device according to claim 1,
It is equipped with a notification unit that notifies the user that the grill door is in the open state.
When the control unit determines that the grill door is in the open state, the control unit notifies the grill door that the grill door is in the open state via the notification unit. In the grill device according to claim 1 or 2.
The control unit is a grill device, characterized in that the heating of the grill storage by the heating unit is stopped when the determination that the grill door is in the open state is continued for a predetermined time. In the grill device according to any one of claims 1 to 3.
The control unit is a grill device, characterized in that the determination of opening / closing of the grill door is started after a predetermined time has elapsed from the start of heating by the heating unit.

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