JP2019017834A - Grill apparatus - Google Patents

Abstract

To provide a grill apparatus configured to highly accurately determine opening/closing of a grill door.SOLUTION: A grill 1 includes: a first temperature sensor 19 installed inside a grill chamber 10; a second temperature sensor 20 installed outside the chamber and, when a grill door 11 is opened, detecting heat from the inside of the chamber; and a control unit for determining the opening/closing of the grill door 11 on the basis of detection results of the first temperature sensor 19 and the second temperature sensor 20. When a difference between the detection temperature of the first temperature sensor 19 and the detection temperature of the second temperature sensor 20 becomes a prescribed value or less, the control unit 17 determines that the grill door 11 is in an open state.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a grill device for performing grilled food cooking and the like.

  2. Description of the Related Art Conventionally, there is a grill device in which a front opening of a grill cabinet is closed so as to be freely opened and closed by a grill door, and a grill pan connected to the grill door is pulled out from the grill cabinet by gripping and pulling the grill door. In this type of grill device, if the grill door is not completely closed when heating is performed, a sufficient temperature rise cannot be obtained, and cooking may fail.

  Thus, as this type of grill device, there is known a device that determines the open / close state of the grill door based on the detection result of a temperature sensor installed in the inside of the grill cabinet (see, for example, Patent Document 1).

  In the grill device described in Patent Literature 1, temperature sensors are installed in the vicinity of the heating unit and the exhaust port in the grill cabinet, and the difference between the detected temperatures of the temperature sensors is a predetermined value or more. If there is, it is determined that the grill door is in a closed state, and if it is less than a predetermined value, it is determined that the grill door is in an open state.

JP 2004-121378 A

  However, in the grill device described in Patent Document 1, since any temperature sensor is installed inside the grill cabinet, there is a problem that the difference between the detected temperatures is not so large and it is difficult to accurately determine. It was.

  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 that can accurately determine whether the grill door is opened or closed.

In order to achieve the above object, the grill device of the present invention comprises:
A grill apparatus comprising: a grill warehouse having a heating unit therein; and a grill door that closes a front opening of the grill warehouse so as to be freely opened and closed.
A first temperature sensor installed inside the grill cabinet and a second temperature sensor installed outside the grill cabinet and detecting heat from the inside of the grill cabinet when the grill door is opened. A temperature sensor; and a control unit that determines opening and closing of the grill door based on detection results of the first temperature sensor and the second temperature sensor;
The control unit determines that the grill door is in an open state when a difference between a temperature detected by the first temperature sensor and a temperature detected by the second temperature sensor becomes a predetermined value or less. And

  In the grill device of the present invention configured as described above, when the grill door is in an open state, the heat inside the box is released to the outside, and the detected temperature of the second temperature sensor outside the box rapidly increases due to the heat. To rise. On the other hand, the temperature in the warehouse is lowered due to the release of heat, and accordingly, the temperature detected by the first temperature sensor is also lowered.

  Therefore, when the grill door is opened, the temperature difference between the detected temperature of the first temperature sensor and the detected temperature of the second temperature sensor also changes so as to decrease rapidly. And the control part determines the opening / closing state of a grill door based on the parameter which changes rapidly.

  Moreover, since the 2nd temperature sensor 20 is installed outside the store | warehouse | chamber, when the grill door 11 is a closed state, it has detected room temperature (low temperature). For this reason, when the grill door is opened, the second temperature sensor responds sensitively to heat released from the interior (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 / close state of the grill door based on the parameter having a large change speed, and the second temperature sensor reacts sensitively by being arranged outside the warehouse. Therefore, the opening / closing of the grill door can be accurately detected.

In the grill device of the present invention,
A notification unit for notifying the user that the grill door is in an open state;
When the control unit determines that the grill door is in an open state, the control unit preferably notifies that the grill door is in an open state via the notification unit.

  Providing such a notification unit makes it easy for the user to recognize that the grill door is in an open state, so that it is easy to prevent cooking failures and the like.

In the grill device of the present invention,
It is preferable that the control unit stops heating the grill warehouse by the heating unit when it is determined that the grill door is in an open state for a predetermined time.

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

In the grill device of the present invention,
It is preferable that the control unit starts the opening / closing determination of the grill door after a predetermined time has elapsed since the heating unit started heating.

  Immediately after the start of heating, the inside temperature does not rise sufficiently, so the temperature difference between the temperature detected by the first temperature sensor inside the box and the temperature detected by the second temperature sensor outside the box is small. Therefore, when it is the structure which determines based on the small temperature difference, there exists a possibility that a misjudgment may arise. Therefore, if the determination is made after a predetermined time has elapsed from the start of heating, the determination is made after a sufficient temperature difference has occurred, so that erroneous determination can be prevented.

The longitudinal section schematic diagram of the gas stove provided with the grill concerning an embodiment. The block diagram which shows the structure of the control part of the grill of FIG. The flowchart which shows the process which the control part with which the grill of FIG. 1 is provided performs.

  Hereinafter, a grill 1 (grill apparatus) according to an 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 configured as a part of the system kitchen.

  The gas stove 2 includes a stove body 3 that houses the grill 1, and a top plate 4 that covers the top 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 top of the stove body 3.

  On the top surface of the top plate 4, the virtues 7 are placed. A stove burner 8 faces a burner opening (not shown) opened below the five virtues 7 of the top plate 4. The stove burner 8 heats a cooking container such as a pan placed on the virtues 7 with gas combustion heat. An exhaust port 9 is opened at the upper rear portion of the top plate 4.

  The grill 1 includes a grill cabinet 10, a grill door 11 that closes the front opening of the grill cabinet 10 so as to be freely opened and closed, and an exhaust duct 12 that communicates with the grill cabinet 10. Inside the grill cabinet 10, a grill 13 for placing a cooked product W such as fish and a soup pan 14 for receiving the broth from the cook W under the grill 13 are accommodated.

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

  In the grill warehouse 10, as a grill burner, an upper fire burner 15 (heating portion) disposed on the ceiling portion of the grill warehouse 10, and lower portions (parts lower than the grill net 13) on both lateral sides of the grill warehouse 10. The lower fire burner 16 (heating part) arrange | positioned is provided. The cooked food W placed on the grill 13 is heated from above and below by the upper fire burner 15 and the lower fire burner 16, thereby cooking the grilled food.

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

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

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

  The open / close determination unit 17b is based on the detected temperature of the first temperature sensor 19 installed inside the grill cabinet 10 and the detected temperature of the second temperature sensor 20 installed outside the grill cabinet 10. The open / close 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.

  Note that the screen display 21 displays not only a display notifying the opening / closing state but also various information (cooking menu, heating time, etc.). The screen display 21 is configured using an organic electroluminescence (organic EL), a light emitting diode (LED) display device, a fluorescent display tube (VFD), etc., in addition to a dot matrix type liquid crystal display panel.

  Returning to FIG. 1, the first temperature sensor 19 is installed at a position facing the exhaust duct 12 of the grill cabinet 10. Thereby, the 1st temperature sensor 19 detects the temperature inside the grill | warehouse | warehouse | chamber 10 regardless of any state of a closed state and an open state.

  The second temperature sensor 20 is installed below the counter 5 and above the grill door 11 in a closed state. Thereby, the 2nd temperature sensor 20 detects room temperature in a closed state, and detects the heat | fever which leaked from the inside of the grill store 10 in the open state.

  In addition, since the heated air tends to flow above the grill door 11 when the grill door 11 is opened, in the grill 1, the second temperature sensor 20 is provided above the grill door 11, thereby providing the second temperature sensor 20. 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 the heat from the inside of the grill cabinet can be detected when the grill door is opened. It only has to be done. For example, you may install in the side or the downward direction of the grill door which is a closed state.

  Here, with reference to FIG.2 and FIG.3, the process which the control part 17 performs in order to determine the opening-and-closing state of the grill warehouse 10 is demonstrated. FIG. 3 is a flowchart showing processing performed by the control unit 17.

  First, the heating control unit 17a ignites the upper fire burner 15 and the lower fire burner 16 based on an 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 180 seconds have elapsed (FIG. 3 / STEP03).

  As described above, the grill 1 is configured to perform the open / close determination of the grill door 11 (step 04 described later) after a predetermined time has elapsed from the start of heating (that is, after the steps 02 and 03 are executed). ing.

  This is because immediately after the start of heating, the temperature inside the grill 10 is not sufficiently increased, and the temperature difference between the temperature detected by the first temperature sensor 19 inside the box and the temperature detected by the second temperature sensor 20 outside the box is small. Therefore, the determination made based on the temperature difference may not be performed with high accuracy.

  In addition, the time until the determination of the open / close state is started is based on the heating mechanism (for example, the upper fire burner 15 and the lower fire burner 16) and the sensor for detecting the temperature in the warehouse (for example, the first temperature sensor 19). You may change suitably according to an installation position or the magnitude | size of the space inside the grill warehouse 10, etc. FIG.

  For example, when the space inside the grill 10 is sufficiently small, the time until the determination of the open / close state is started may be shorter than 180 seconds, or the determination of the open / close state is started simultaneously with the start of heating. You may do it.

  Returning to the description of the processing performed by the control unit 17, if 180 seconds have not elapsed (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 again. Return and repeat the determination of whether 180 seconds have passed.

  On the other hand, when 180 seconds have elapsed (in the case of YES at STEP 03), the open / close determination unit 17b determines the opening / closing determination of the grill door 11 and the detected temperature of the first temperature sensor 19 and the second temperature sensor. 20 detected temperatures are recognized, and it is determined whether or not the temperature difference is 40 ° C. or less (FIG. 3 / STEP 04).

  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 in an open state, the heat in the cabinet is released to the outside. At this time, due to the released heat, the outside temperature (specifically, the temperature in the vicinity of the grill door 11 in the closed state) rapidly increases. Thereby, the detection temperature of the 2nd temperature sensor 20 installed above the grill door 11 in a closed state will rise rapidly from room temperature. On the other hand, when the heat in the storage is released to the outside, the temperature in the storage decreases. Thereby, the detection temperature of the 1st temperature sensor 19 installed in the store | warehouse | chamber falls.

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

  By the way, since the 2nd temperature sensor 20 is installed outside the store | warehouse | chamber, when the grill door 11 is a closed state, it has detected room temperature (low temperature). Therefore, when the grill door 11 is in an open state, the second temperature sensor 20 does not depend on the degree of opening / closing of the grill door 11 (for example, even if it is half-open), and the heat released from the interior (that is, high temperature). Sensitive to the air).

  The temperature difference between the temperature detected by the first temperature sensor 19 and the temperature detected by the second temperature sensor 20 is a parameter having a large change speed because the temperature detected by the second temperature sensor 20 changes rapidly. ing.

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

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

  Returning to the description of the processing performed by the control unit 17, when the temperature difference exceeds 40 ° C. (in the case of NO in STEP 04), the open / close determination unit 17b determines that the grill door 11 is closed, and again Returning to STEP 04, 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 (in the case of YES in STEP 04), the open / close determination unit 17b determines that the grill door 11 is in the open state and recognizes the determination result, the notification control unit 17c. Notifies that it is in an open state (FIG. 3 / STEP 05).

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

  Note that the notification method is not limited to the above method, and any other method may be used as long as it allows the user to recognize the open state. In addition, unlike the process described later, when it is configured to immediately stop heating when it is recognized as being in an open state, notification may not 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 that has elapsed since it was determined that the grill door 11 is in the open state (FIG. 3 / STEP06).

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

  When the temperature difference exceeds 40 ° C. (in the case of NO in STEP 07), the open / close determination unit 17b determines that the grill door 11 is in a closed state, and the notification control unit 17c that recognizes the determination result The fact that it is in a closed state is notified (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.

  Thereafter, the open / close determination unit 17b returns to STEP 04 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 has been opened again).

  On the other hand, when the temperature difference is 40 ° C. or less (YES in STEP 07), the open / close determination unit 17b determines whether 20 seconds have elapsed (FIG. 3 / STEP 09).

  If 20 seconds have not elapsed (NO in STEP 09), the open / close determination unit 17b returns to STEP 09 again and repeats the determination of whether 20 seconds have elapsed.

  On the other hand, if 20 seconds have elapsed (YES in STEP 09), the heating control unit 17a extinguishes the upper fire burner 15 and the lower fire burner 16, stops heating, and ends the current process. (FIG. 3 / STEP 10).

  As described above, the grill 1 is configured to stop heating after a predetermined time has elapsed since it is determined to be in the open state (that is, after the processing of STEP06 to STEP09 is performed).

  This is because the user may intentionally open the grill door 11 during heating in order to check the state of the food W or the like, and immediately after it is determined that the grill door 11 is in the open state. It is because it may become difficult to perform stable cooking if it is configured to stop heating.

  In addition, you may change suitably the time until it stops a heating according to the magnitude | size of the space inside the grill | zipper warehouse 10, etc. FIG.

DESCRIPTION OF SYMBOLS 1 ... Grill (grill apparatus), 2 ... Gas stove, 3 ... Stove body, 4 ... Top plate, 5 ... Counter, 6 ... Opening for stove, 7 ... Gotoku, 8 ... Conto burner, 10 ... Grill warehouse, 11 ... Grill door , 12 ... exhaust duct, 13 ... grill, 14 ... soup saucer, 15 ... upper fire burner (heating part), 16 ... lower fire burner (heating part), 17 ... control part, 17a ... heating control part, 17b ... opening and closing Determination part, 17c ... Notification control part, 18 ... Input part, 19 ... First temperature sensor, 20 ... Second temperature sensor, 21 ... Screen display (notification part), 22 ... Buzzer (notification part), W ... Cooking .

Claims (4)

A grill apparatus comprising: a grill warehouse having a heating unit therein; and a grill door that closes a front opening of the grill warehouse so as to be freely opened and closed.
A first temperature sensor installed inside the grill cabinet and a second temperature sensor installed outside the grill cabinet and detecting heat from the inside of the grill cabinet when the grill door is opened. A temperature sensor; and a control unit that determines opening and closing of the grill door based on detection results of the first temperature sensor and the second temperature sensor;
The control unit determines that the grill door is in an open state when a difference between a temperature detected by the first temperature sensor and a temperature detected by the second temperature sensor becomes a predetermined value or less. And grill equipment. The grill apparatus according to claim 1, wherein
A notification unit for notifying the user that the grill door is in an open state;
When the control unit determines that the grill door is in an open state, the control unit notifies that the grill door is in an open state via the notification unit. In the grill device according to claim 1 or 2,
The said control part stops the heating with respect to the said grill | warehouse | chamber by the said heating part, when the determination that the said grill door is an open state is continued for the predetermined time, The grill apparatus characterized by the above-mentioned. In the grill device according to any one of claims 1 to 3,
The said control part starts the determination of opening / closing of the said grill door after predetermined time passes since the said heating part started heating, The grill apparatus characterized by the above-mentioned.