JPH03236817A - Controller of grill - Google Patents

Abstract

PURPOSE:To know if a grill is being used for cooking or not easily by changing the display mode of a timer set time for a time display part after detecting ignition of a grill burner. CONSTITUTION:A timer part 33a consists of an operation panel having timer set keys 24a, 24b for increasing and decreasing and a time display part 25 for liquid crystal display of an operation time by two-digit Arabic figures. When an ignition is detected, a figure showing 8min. appears in the time display part 25. With a pushing operation to the timer set key 24a for increasing, the set time becomes 9min., and the set time is increased by 1min. for every pushing operation of the timer set key 24a for setting 15min. at the maximum. With a pushing operation to the timer set key 24b for decreasing, the set time is decreased by 1min. A display thus appears only when the ignition is detected, so if a grill burner 4b is ignited for cooking or not can be determined easily.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a grill control device equipped with a timer for automatically stopping combustion when the operating time exceeds a set time.

[Prior art] Japanese Utility Model Application Publication No. 58-46949 discloses a method for automatically supplying gas using a timer circuit that outputs an output signal after a predetermined time elapses after igniting the gas, taking into consideration safety against forgetting to extinguish the gas. A gas appliance is disclosed that shuts off and extinguishes the fire, as well as invents an alarm.

In this case, normally, electricity is supplied by the ignition operation, and at the same time the time display of the timer appears on the display section.

[Problems to be Solved by the Invention] However, for example, a gas grill is equipped with an opening/closing door on the front of the gas staple, and it is not easy to judge from the outside whether the grill burner is burning or not. For this reason, when the above-mentioned conventional technique is applied to a gas grill and the grill burner is ignited, it is expected that the burner will burn and there will be a problem that it will be difficult to judge whether or not Il filling has progressed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a grill control device that makes it easy to know whether the grill is cooking or not.

[Means for Solving Problem 1] In order to achieve the above object, the present invention controls the fuel supply to the grill burner and the ignition, extinguishing, and combustion operations of the grill burner, and also controls the burning of the grill burner for a set time. In the grill control device, which includes a stirring timer and a time display section that displays the number of hours of the timer, the display mode of the set number of hours of the timer on the time display section changes after ignition of the grill burner is detected. let

[Operation and Effects of the Invention 1 (Operation) The grill combustion device supplies fuel to the grill burner and performs an ignition operation.

When combustion starts and ignition of the grill burner is detected, the time display section displays the set time of the timer or changes the display mode. The grill control device also maintains the firing of the grill burners.

When the set time has elapsed and the timer operation ends, the grill control device stops supplying fuel to the grill burners and automatically extinguishes the burners.

(Effect) If ignition fails, the timer setting time is not displayed on the time display section or the display mode does not change.

If ignited, a display will be displayed or the display mode will change. Therefore, it can be easily determined whether the grill burner is ignited and cooking is being carried out, or whether it is not ignited.

In addition, in conventional configurations in which the timer setting time is displayed on the time display section at the same time as the ignition operation, and the ignition display is displayed on another display section, the user cannot ignite the timer because the remaining time is displayed large. It's easy to misunderstand that you're doing it. However, in the present invention, the set time appears on the time display section only when the ignition occurs, or the display mode changes, so there is no need for another display section to indicate that the ignition has occurred, and the above-mentioned misunderstanding can be avoided. It doesn't happen.

[Example] Next, an example of the present invention will be described based on FIGS. 1 to 7.

FIG. 2 shows a gas staple 1.
Two gas stoves 2.3 are provided on the top surface, and on the front side of the gas staple 1, there is a grill 4 for taking food in and out of the grill 4, which has an inner grill box inside the gas staple 1. Grill opening/closing door 4a, on/off button 5 for operating each gas stove 2.3 and grill 4, respectively.
6.7, and an operation panel 20 for setting the operating conditions of each gas stove 2.3 and grill 4.

Two burners are installed at the back of each stove burner 2a, 3a and the grill opening/closing door 4a, and are placed above and below the food to be cooked.
As shown in FIG. 4, the grill burner 4b consisting of two burners includes fuel supply pipes 8a, 8b, which are branched from a gas pipe 8 connected to a fuel gas supply port (not shown).
8c is connected.

Each burner 2a, 3a, and 4b is also provided with an ignition electric [!] for producing a spark discharge for ignition. 2d, 3d, 4d, and thermocouples 2e, 3 that sense combustion heat and generate electromotive force.
e and 4e are provided.

Each fuel supply pipe 8a, 8b, 8c has a suitable place for the fuel gas,
Valve mechanism 1 integrally configured to adjust gas amount
1.12.13 are provided.

The valve function parts constituting each valve mechanism 11, 12, and 13 are arranged from the downstream side to the upstream side, including the fuel fl control valve 1.
1a, 12a, 13a, main valve llb, 12b, 13
b, there are electromagnetic safety valves 11c and 12C113c.

Each fuel control valve 11a, 12a, 13a is connected to a gas amount control lever 5a, 6a, 7 provided on the front of the gas staple 1.
The valve opening degree is changed by a, and the amount of fuel supplied to each burner is adjusted.

The main valves 11b, 12b, and 13b are opened and closed in response to the operation of the extinguishing button 5.6.7 provided on the front of the gas staple 1, and are opened or closed by pressing the extinguishing button 5.6.7. It has a cam mechanism that alternately changes between a closed state and a closed state.

The electromagnetic safety valves 11c, 12c, and 13c are each main valve ll.
b, 12b, 13tM7) rMw4 is opened and closed in connection with the operation, and is maintained in the closed state when the main valves 11b, 12b, 13b are in the closed state;
Turn on/off button 5 when changing b from closed state to open state
．． If the ignition push operation in 6.7 is continued, the open state is maintained, and when the push operation is released (stopped), the main valves 11b, 12b, 13b are kept in the open state by the cam mechanism. If the coil is installed separately, the open state is maintained only when a certain amount of current from the thermocouples 2e, 3e, and 4e is applied to the coil, and the closed state is maintained when the current value is small. The gas supply will be stopped.

In addition, the valve mechanism 11.12.13 also includes a main valve 1.
Ignition switch lid, 1 that closes the contact only when the ignition push operation of the ignition extinguishing button 5.6.7 is performed when 1b, 12b, 13b is changed from the closed state to the open state
2d and 13d are provided.

In addition, each main valve 11 is attached to each point extinguishing button 5.6.7.
In order to detect the valve open position for opening the valves b, 12b, and 13b, signal switches lie and 12e for detecting the valve open position are used.
, 13e are provided.

In the gas staple 1 having the above configuration, each burner is controlled by a control circuit 30 provided within the gas staple 1.

The control circuit 30 is formed centering on a microcomputer, and, as shown in FIG. 3, is composed of functional units such as a stove control unit 31, 32 and a grill control unit 33 corresponding to each burner.

Each stove control unit 31.32 discharges sparks at the ignition electrodes 2d, 3d when the ignition switch lid, 12d interlocked with the ignition/extinguishing button 5.6 closes the contact, and causes each stove burner 2a, 3a to discharge a spark. starts burning.

Also, during the combustion of each stove burner 2a, 3a, the electromagnetic safety valve 11 is controlled by the output from the thermocouples 2e, 3e.
The coils c and 12c are energized to attract the valve body and maintain it in the open state. Each stove burner 2a, 3a may misfire due to overboiled food, etc., and the thermocouples 2e, 3a may misfire.
When the output of e decreases, the electromagnetic safety valves 11c and 12
Since the current applied to the valve c is reduced and the valve body cannot be attracted, the electromagnetic safety valves 11c and 12c are closed as a misfire detection state, and the supply of fuel gas is stopped.

In the control of the grill 4 by the grill control unit 33, safety control is performed for the grill burner 4b by detecting misfire etc. by the thermocouple 4e, as in the case of the stove burners 2a and 3a described above, while safety control is performed for the grill burner 4b by detecting misfire etc. by the thermocouple 4e. ensures safety by limiting heating time rather than by temperature sensing.

For this purpose, the grill control section 33 is equipped with a timer section 33a.

The timer section 33a starts operating when the grill burner 4b is ignited by pressing the ignition/extinguishing button 7, and when the temperature detected by the thermocouple 4e exceeds a predetermined temperature and ignition is detected. After 8 minutes,
It acts to automatically close the electromagnetic safety valve 13c and stop the supply of fuel gas.

The timer section 33a also includes a timer setting key 24 for increasing and decreasing on the operation panel 20 in order to set the operating time.
a, 24b, and a time display section 25 that displays the operating time in two-digit Arabic numerals on a liquid crystal display, and can increase or decrease within 15 minutes and set an arbitrary time as the operating time.

Here, when ignition is detected, a number indicating 8 minutes appears on the time display section 25. After that, timer setting key 2 for increase
When the timer setting key 24a is pressed, the set time becomes 9 minutes, and thereafter, each time the timer setting key 24a is pressed, the set time increases by 1 minute, so that a maximum of 15 minutes can be set. Further, when the timer setting key 24b for decreasing is pressed, the set time is decreased by one minute. In this way, the display appears on the time display section 25 only when ignition is detected, so it is easy to judge whether the grill burner 4b is ignited and cooking is being done or not, and whether the grill burner 4b is ignited or not. No other display is required.

Note that the operating time of the time display section 25 is displayed in minutes, and when it is less than 30 seconds, it is displayed in seconds. Also, if you perform an operation to extend the operating time at this time, 1 minute is set in the first operation, and thereafter it is incremented by the minute.

In this embodiment, in order to easily extend the operating time of the timer section 33a, the grill burner 4
A buzzer 34 is provided as a notification means for notifying that the end of heating by b is approaching.

This buzzer 34 is designed to perform a notification operation 30 seconds before the timer section 33a extinguishes the grill burner 4b, so if the timer setting key 24a is operated after receiving the notification from the buzzer 34, the grill burner 4b will be extinguished. 4b usage time can be extended. Therefore, when it is desired to continue using the grill burner 4b, the grill burner 4b will not be inadvertently extinguished.

Further, the buzzer 34 notifies the user when the timer section 33a has finished operating, and also when the main valve 1 is activated by the ignition/extinguishing button 7.
Until the valve closing operation (extinguishing operation) of 3b is performed, a notification is repeatedly given every 1 minute to urge the user to perform the operation (closing the main valve 13b).

In the grill control unit 33, when the electromagnetic safety valve 13c is closed due to misfire detection etc. even though the main valve 13b is not closed by the ignition/extinguishing button 7 and the signal switch 13e is in the state where the contact is closed. The buzzer 34 notifies the user of the notification.

Note that the lock lever provided on the front of the gas staple 1
Numeral 9 locks the extinguishing buttons 5, 6, and 7 so that the buttons 5, 6, and 7 cannot be pressed in order to prevent young people from inadvertently operating the ignition.

Next, the operation of the grill 4 in the gas staple 1 of this embodiment having the above structure will be explained based on FIG. 5.

At time t1, when the user operates and presses the ignition/extinguishing button 7, the main valve 13b opens and the electromagnetic safety valve 13c opens, supplying fuel gas to the grill burner 4b.

At this time, the signal switch 13e and the ignition switch 13
d closes the contact, and in the grill control section 33, a spark discharge is performed at the ignition electrode 4d by a high voltage generating circuit (not shown) in response to the closing operation of the signal switch 13e.

In the grill burner 4b, the supplied fuel gas is ignited and ignited, thereby heating the thermocouple 4e.

When the temperature of the thermocouple 4e rises sufficiently at time t2, an ignition detection state occurs based on the output of the thermocouple 4e, a number indicating 8 minutes appears on the time display section 25, and the timer section 33a starts operating. Also, the electromagnetic safety valve 13c is attracted and maintained in the open state.

In this example, the initial setting of the cooking timer is set to 8 minutes, but normally the cooking time of the grill (for cooking fish, etc.) is 7 minutes.
Since the time is between 9 minutes and 9 minutes, there is no need to drastically change the timer settings each time the grill 4 is used, making it easy to use. Note that while the timer section 33a is in operation, as shown in FIG. 1(c),
The dot 251 at the bottom right of the number in the time display section 25 blinks.

When the user releases the push operation of the ignition/extinguishing button 7 in response to the display on the time display section 25, the main valve L3b is maintained in the open state by the cam mechanism, and at this time, the electromagnetic safety valve 13
c is maintained in the open state, fuel gas is continuously supplied to the grill burner 4b.

After confirming the ignition of the grill burner 4b, the user operates the timer setting keys 24a and 24b as necessary to set the usage time of the grill 4, and the time displayed on the time display section 25 changes and the timer section The operating time of the timer section 33a is set accordingly, and by the above operation, the timer section 33a is activated.
The operating time T of the timer section 3 is set, and the timer section 3
The operation end time of 3a is set to, for example, time tn.

While cooking is performed using the grill 4, the operating time T of the timer section 33a gradually decreases with the passage of time, and the display time of the time display section 25 decreases correspondingly.

During the remaining operation of the timer section 33a, raIT is less than 1 minute,
When the remaining time reaches 30 seconds (time t3), the buzzer 34 gives a notification.

In this case, the buzzer 34, for example, as shown in FIG.
Driven by five pulse signals with small pulse width,
This makes it easier for the user to notice that the operating time of the timer section 33a is nearing its end.

At time tn, the operating time T of the timer section 33a ends, the time displayed on the time display section 25 becomes 0 minutes, the electromagnetic safety valve 13c is closed, and the grill burner 4b is extinguished.

At this time, the buzzer 34 notifies that the extinguishing operation has been performed.

In this case, the buzzer 34 is driven by five pulse signals with increased pulse widths, as shown in FIG. This is suitable for prompting the valve to close.

When the valve is closed using the ignition/extinguishing button 7, the opening of the main valve 13b is released and closed, and the signal switch 1 is closed.
3e is turned off, and the display on the time display section 25 disappears.

As shown in the above embodiment, when the grill burner 4b is ignited and the temperature of the thermocouple 4e has risen sufficiently to become the ignition detection state at time t2, a display appears on the time display section 25. There is no need for another indicator to indicate what is happening, and it can be easily determined whether the grill burner 4b is lit and cooking is being done or not.

Moreover, since the timer section 33a is configured to start operating when the time t2 at which the ignition is detected is reached, the cooking is always in progress when the buzzer 34 is notified at the time tn. Therefore, only the timer section 33a operates without combustion, and the buzzer 34 does not confuse the user when the timer ends (tn). moreover,
The fact that there is no need for another indicator to indicate that the fire is ignited has the advantage that when the power source is a dry cell battery as in this embodiment, the consumption of the dry cell battery can be delayed.

If the operating time is not set using the timer setting keys 24a and 24b, the grill burner 4b will be automatically extinguished after a certain operating time, for example 8 minutes, after the ignition operation, so the remaining operating time of the timer section 33a will not be exceeded. Even if you take out the food to be cooked from the grill 4 and forget to turn off the fire with the fire extinguishing button 7 when there is time, the electromagnetic safety valve 13c is closed when the timer section 33a finishes operating. The grill 4 does not overheat and is safe. In the above embodiment, the timer section 33a starts operating at the time t2 when ignition is detected, and at the same time as the time display section 25 displays the set time, but the timer section 33a is not limited to this, and when the ignition operation is performed using the ignition/extinguishing button 7. It may be t1.

Furthermore, in the above embodiment, as shown in FIG. 1(c), a display appears on the time display section 25 when ignition is detected. However, the present invention is not limited to this, and as shown in FIG. When the number is displayed, the displayed number changes from lit to flashing, or as shown in Figure 7 (
As in b), the light may be changed from blinking to lighting.

In the above embodiments, a gas grill in a gas staple was shown, but a grill of a type that burns gas obtained by vaporizing petroleum as a fuel may also be used.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing the display mode of the time display section of a gas staple which is an embodiment of the present invention, Fig. 2 is a perspective view of the gas staple, and Fig. 3 is an explanation of the control contents of the gas staple. Figure 4 is a gas circuit diagram of the gas staple, Figure 5 is a time chart explaining the operation of the grill of the gas staple, Figures 6 and 7 are the generation of the buzzer of the gas staple. It is a waveform diagram for explaining sound.

Claims (1)

[Claims] 1) A timer that controls the fuel supply to the grill burner and the ignition, extinguishing, and combustion operations of the grill burner, and burns the grill burner for a set time, and a time that displays the number of hours of the timer. In the grill control device comprising a display section, the display mode of the set time of the timer on the time display section is as follows:
A control device for a grill, characterized in that the control device changes the temperature after detecting ignition of the grill burner.