JP2000146190A - Gas cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas cooker capable of being reused instantly even if a safety device is activated by operation of a water depletion sensor so that a grill burner is extinguished. SOLUTION: A recombustion control means 7 discriminates whether a safety device 6 is activated or not, and when a judgment that the safety device 6 is activated is made, the control means 7 discriminates whether a predetermined time t1 from the time when the on-off valve 3 is closed by activation of the safety device 6 has elapsed or not. If the predetermined time t1 has not elapsed, a signal is transmitted to an on-off valve control means 2 so as to cancel an on-off valve 3 compulsive-close signal from the safety device 6. If the predetermined time t1 has elapsed, a signal for restarting operation of the safety device 6 is transmitted to the on-off valve control means 2. Thus, at this timing in the case wherein the safety device 6 is being activated, the on-off valve control means 2 closes the on-off valve 3 again.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas stove having a grill, and more particularly, to a gas stove capable of reignition and combustion under a predetermined condition even when a safety device operates.

[0002]

2. Description of the Related Art Gas stoves used in ordinary households are usually provided with a grill. In FIG.
1 shows an outline of a gas stove and a cross-sectional view of a grill portion thereof. As shown in FIG. 6A, a plurality of burners 11 and a corresponding burner 12 are provided on the upper surface of the gas stove, and a grill 13 is provided at the center thereof.
And these are the burner ignition button (plug knob) 1
4. A grill ignition button (plug knob) 15 is used to ignite and extinguish, respectively.

As shown in FIG. 6 (b), the grill portion is provided with a grill burner 17 at an upper part in an outer case 16, and a water tray 18 on a tray 19 at a lower part. A grill grill 20 is placed on the upper surface of the water basin 18. These water dish 18 and grill grill 20
Is put in and out through the grill door 21. This grill 13 is mainly used for grilling fish and the like. Then, in the case of normal use, water is filled in the water dispenser 18 so as to receive fat from a cooking material such as fish.

[0004] By the way, when cooking food such as fish on a grill, if the grill burner is left without extinguishing the fire while the water in the water tray 18 is running out, the cooking material will burn. And ignite the fat in the water dish,
The flame rises from the grill outlet provided on the gas stove, and in the worst case, the flame may be transferred to a building structure or the like, resulting in a fire.

[0005] If the burning time of the grill becomes abnormally long, the water in the water dish 18 will not evaporate, and the temperature of the dish stand 19 will rise. Therefore, the out-of-water sensor 22
The temperature of the water tray 18 is monitored to detect that the water in the water tray 18 has run out, and the safety device is activated to stop the combustion of the grill.

FIG. 7 shows an example of a flow chart of the operation of the safety device. First, in step S41, it is checked whether or not the ignition button is on, and if it is not on, the process stands by. If it is on, a command to open the safety valve (open / close valve: SV) is issued in step S42.
Then, in step S43, the out-of-water sensor 22
Then, it is determined whether or not the temperature measured is equal to or higher than the predetermined temperature T1. If the temperature is the predetermined temperature T1, it is determined that the water in the water dispenser 18 has run out and it is dangerous, and as a function of the safety device, the safety valve is closed in step S45.

If the temperature measured by the water out sensor 22 is not equal to or higher than the predetermined temperature T1, it is in a steady state, and the process proceeds to step S44 to determine whether or not the ignition button is off. Step S if available
At 45, the safety valve is closed. If it is not off, wait in this state.

After the safety valve is closed, it is determined in step S46 whether or not the temperature measured by the drain sensor is equal to or lower than a predetermined temperature T2 (T1> T2). Wait as it is. When it becomes T2 or less, it is checked in step S47 whether the ignition button is turned off. If it is turned off, the operation of the safety device is released, and the process returns to step S41. If the ignition button has not been turned off, the apparatus stands by as it is. The reason for waiting until the ignition button is turned off is that if the safety valve is opened while the ignition button (particularly with the plug knob) is on, the igniter will not operate and only the gas remains unignited. This may cause danger and cause danger.

[0009]

When the above-described safety device is activated, a person starts to add water and then start cooking again. However, since the temperature of the water tray is not immediately transmitted to the drain sensor, the temperature detected by the drain sensor does not immediately decrease. Therefore, it takes a considerable amount of time until the temperature detected by the drain sensor reaches T2. During this time, there is a problem that cooking cannot be performed because the safety device is not reset.

The present invention has been made in view of such circumstances, and even if a safety device is activated by the operation of a water out sensor and a grill burner is extinguished, it can be reused immediately, and furthermore, safety is improved. An object of the present invention is to provide a gas stove with a grill that does not impair the gas stove.

[0011]

A first means for solving the above problems is a gas stove having a grill,
It has a drain sensor that measures the temperature of the water dish placed under the grill of the grill, and when the measured temperature reaches the operating temperature T1, activates the safety device to extinguish the grill,
When the safety device has a function of resetting the safety device when the measured temperature becomes T2 lower than T1, the grille is operated until the predetermined time t1 elapses after the safety device is operated, even if the safety device is operating. Means for enabling re-ignition and combustion of a gas stove.

In this means, even if the safety device is operating, the grill can be re-ignited and burned until the predetermined time t1 elapses after the operation of the safety device, even if the safety device is operating. Therefore, the grill can be reused before the temperature detected by the drain sensor reaches T2 or lower. Therefore, cooking can be resumed immediately.

When the safety device is operating,
Since combustion can be performed only for the time t1 from the start of operation of the safety device, safety is not hindered. If water is poured into the water dish, before the time t1 elapses, the temperature detected by the out-of-water sensor becomes T2 or less, and the safety device is reset. In this case, it goes without saying that combustion continues even after the time t1 has elapsed.

[0014] A second means for solving the above-mentioned problems is as follows.
A gas stove having a grill, comprising a drain sensor for measuring a temperature of a water tray disposed below a grill of the grill, and activating a safety device when the measured temperature reaches an operating temperature T1 to activate the grill. The fire extinguishes and the measured temperature is T
A function for resetting the safety device when the temperature T2 becomes lower than 1 in which the grille can be re-ignited even while the safety device is operating, and a predetermined time t after re-ignition.
A gas stove is further provided with a means for enabling the grill to be burned even when the safety device is in operation until the time when 2 has elapsed.

In this means, the grill can be reignited even when the safety device is operating, and until the predetermined time t2 elapses after the reignition, even if the safety device is operating, the grill can be reignited. Enables combustion. Therefore, similar to the first means, the grill can be reused before the temperature detected by the out-of-water sensor becomes T2 or less. Therefore,
Cooking can be resumed immediately.

In this means, it is desirable to limit the number of times that re-ignition is possible under the operating condition of the safety device (in particular, 1
It is preferable that the number of times is only one). The reason is that after the re-ignition, until the predetermined time t2 elapses, the grill can be burned even if the safety device is operating. This is because the operation of the device is neglected. However, when the second safety device is provided as described later, it is not always necessary.

A third means for solving the above-mentioned problem is as follows.
A gas stove having a grill, comprising a drain sensor for measuring a temperature of a water tray disposed below a grill of the grill, and activating a safety device when the measured temperature reaches an operating temperature T1 to activate the grill. The fire extinguishes and the measured temperature is T
In a device having a function of resetting the safety device when the temperature T2 becomes lower than 1, the grille can be re-ignited even when the safety device is operating, and the time t until re-ignition after the operation of the safety device is measured. In addition, after the safety device is operated, a means for enabling the grill to be burned is added until the time of f1 (t) determined as a function of t elapses even when the safety device is operating. A gas stove characterized by the following (claim 3).

In the second means, the time during which combustion can be continued after the grill burner is reignited is constant (t).
2). On the other hand, in the present means, the time during which combustion is possible after the operation of the safety device is defined as a function f1 (t) of the time t until re-ignition after the operation of the safety device. Therefore, it is possible to set such that as the time t becomes longer, that is, as the temperature in the grill decreases, the time during which combustion can be continued is made longer.

However, it is preferable to set an upper limit for f1 (t). The reason for this is that if reignition is performed multiple times, the result is that the action of the safety device is effectively ignored. By setting an upper limit on f1 (t), it is possible to prevent re-ignition after the elapse of this time from the activation of the safety device unless the safety device is released. Further, as described in the description of the second means, the number of times that re-ignition can be performed may be limited. However, when a second safety device described later is provided, such an upper limit is not always necessary.

A fourth means for solving the above-mentioned problem is:
A gas stove having a grill, comprising a drain sensor for measuring a temperature of a water tray disposed below a grill of the grill, and activating a safety device when the measured temperature reaches an operating temperature T1 to activate the grill. The fire extinguishes and the measured temperature is T
In a device having a function of resetting the safety device when the temperature T2 becomes lower than 1, the grille can be re-ignited even when the safety device is operating, and the time t until re-ignition after the operation of the safety device is measured. In addition, after the re-ignition, until the time of f2 (t) determined as a function of t elapses, a means for enabling the grill to be burned even when the safety device is operating is added. This is a characteristic gas stove (claim 4).

In the second means, the time during which combustion can be continued after the grill burner is reignited is constant (t).
2). On the other hand, in the present means, the time during which the combustion can be continued is defined as a function f2 (t) of the time t from the activation of the safety device to the re-ignition. Therefore, it is possible to set such that as the time t becomes longer, that is, as the temperature in the grill decreases, the time during which combustion can be continued is made longer.

Also in this means, it is desirable to limit the number of reignitions possible under the safety device operating condition (especially preferably only one). The reason is that after the re-ignition, until the predetermined time f2 (t) elapses, the grill can be burned even if the safety device is operating. This is because the operation of the safety device is effectively ignored. However, when the second safety device is provided as described later, it is not always necessary.

A fifth means for solving the above problem is as follows.
A gas stove having a grill, comprising a drain sensor for measuring a temperature of a water tray disposed below a grill of the grill, and activating a safety device when the measured temperature reaches an operating temperature T1 to activate the grill. The fire extinguishes and the measured temperature is T
In a device having a function to reset the safety device when the temperature T2 becomes lower than 1, the grille can be re-ignited even when the safety device is operating, and the temperature measured by the out-of-water sensor at the time of re-ignition is T3. At the time, after the operation of the safety device, a means for enabling the grill to be burned even when the safety device is operating is added until a time of g1 (T3) determined as a function of T3 elapses. A gas stove (claim 5).

In the third means, the time during which combustion is possible after the operation of the safety device is defined as the function f1 (t) of the time t from the operation of the safety device until reignition.
In this means, a function g (T3) of the temperature T3 measured by the out-of-water sensor at the time of re-ignition is used. Therefore, it is possible to more directly set an appropriate combustible time from the time of activation of the safety device.

However, it is preferable to set an upper limit for g1 (t). The reason for this is that if reignition is performed multiple times, the result is that the action of the safety device is effectively ignored. By setting an upper limit on g1 (t), it is possible to prevent re-ignition after the lapse of this time from the activation of the safety device unless the safety device is released. Further, as described in the description of the second means, the number of times that re-ignition can be performed may be limited. However, when a second safety device described later is provided, such an upper limit is not always necessary.

A sixth means for solving the above-mentioned problem is:
A gas stove having a grill, comprising a drain sensor for measuring a temperature of a water tray disposed below a grill of the grill, and activating a safety device when the measured temperature reaches an operating temperature T1 to activate the grill. The fire extinguishes and the measured temperature is T
In a device having a function of resetting the safety device when the temperature T2 becomes lower than 1, the grille can be re-ignited even when the safety device is operating, and the temperature measured by the out-of-water sensor at the time of re-ignition is T3. Sometimes, after re-ignition, T3
A means for enabling combustion of the grill even when the safety device is in operation until the time of g2 (T3) determined as a function of the gas stove elapses. 6).

In the second means, the time during which the combustion can be continued is defined as a function f (t) of the time t from the activation of the safety device to the re-ignition. The function g2 (T
3) Therefore, an appropriate combustion continuation time after re-ignition can be set more directly.

However, g2 (T3) is preferably set to 0 when T3 becomes equal to or higher than a predetermined temperature.
Alternatively, it is desirable to limit the number of reignitions that can be performed under a safety device operating condition (particularly, it is preferable to limit the number of reignitions to only one). The reason for this is that if reignition is performed multiple times, the result is that the action of the safety device is effectively ignored. By setting g2 (T3) to 0 or limiting the number of times that re-ignition is possible, re-ignition cannot be performed unless the safety device is released. But,
If the second safety device described later is provided, such an upper limit is not always necessary.

[0029] A seventh means for solving the above problem is as follows.
A gas stove having a grill, comprising a drain sensor for measuring a temperature of a water tray disposed below a grill of the grill, and activating a safety device when the measured temperature reaches an operating temperature T1 to activate the grill. The fire extinguishes and the measured temperature is T
When the safety device has a function of resetting the safety device when the temperature T2 becomes lower than 1, even if the safety device is operating while the change rate of the temperature measured by the water out sensor is negative after the safety device is operated. A gas stove is further provided with means for enabling re-ignition and combustion of the grill.

If the temperature detected by the drain sensor continues to drop, it can be considered that water is contained in the water tray. Therefore, in the present means, while the change rate of the temperature measured by the out-of-water sensor is negative, it is possible to reignite and burn the grill even when the safety device is operating. If there is no water in the water dish, the temperature change rate measured by the water out sensor will turn positive with relighting.
The release of the safety device can be stopped immediately. After a long time, the rate of change of the temperature measured by the out-of-water sensor becomes non-negative, but if water is contained in the water dish, the temperature measured by the out-of-water sensor becomes T2 or less before that, Since the safety device is reset, combustion can be continued.

An eighth means for solving the above-mentioned problem is as follows.
In any one of the first means to the seventh means, when the measured temperature of the out-of-water sensor reaches T4 higher than T1, the grill is extinguished by the second safety device, and the measured temperature of the out-of-water sensor is measured. Means for resetting the second safety device when the temperature falls to the temperature T5 (claim 8).

In the first to seventh means, although the safety device is working, the fuel is released and the combustion is performed. Therefore, the combustion is performed without putting water in the water dish. When restarting, etc., depending on the case, the temperature in the grill may increase, leading to a fire. Therefore, in this means, the second safety device is provided, and when the temperature measured by the water-out sensor reaches T4 higher than T1, the grill is extinguished by the second safety device. The second safety device is configured to be reset when the temperature measured by the out-of-water sensor drops to the temperature T5. When the second safety device is operating, the above safety device is also operating, so it is desirable to set T2 = T5 so that both are reset at the same time, but they need not necessarily be the same.

A ninth means for solving the above-mentioned problems is as follows:
Any one of the first to eighth means, wherein a means for issuing an alarm when a safety device (including a second safety device, if any) is activated is added. (Claim 9).

According to this means, an alarm can be issued when the safety device is activated, that is, when the water in the water tray is depleted or when the temperature in the grill is too high. And the like can be notified.

[0035]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows Embodiment 1 of the present invention.
It is a block diagram showing an example. In FIG. 1, 1 is an ignition button, 2 is an on-off valve control means, 3 is an on-off valve (safety valve: SV), 4 is a burner, 5 is a drain sensor, 6
Is a safety device, and 7 is a reburn control means. The on-off valve control means 2, the safety device 6, and the reburn control means 7 may be constituted by independent hardware, respectively, or may be realized by a single microcomputer as a means of a microcomputer function. . Also, ignition button 1
May take the form of a plug knob.

When the ignition button 1 is turned on, the on-off valve control means 2 opens the on-off valve 3. When the ignition button is turned off, the on-off valve control means 2 closes the on-off valve 3. The out-of-water sensor 5 is the same as that indicated by reference numeral 22 in FIG. 6 and is provided on a plate base, and detects the temperature of the water tray to detect that the water in the water tray has run out. It is to detect. The safety device 6 inputs a temperature detected by the water out sensor 5 and, when the temperature reaches a set temperature T1, sends a signal to the on-off valve control means 2 to close the on-off valve 3.

When the temperature detected by the out-of-water sensor 5 drops to T2 (T1> T2), a signal is sent to the on-off valve control device 2 to release the forcibly closed state of the on-off valve 3. Even if this signal is sent, the on-off valve control device 2 does not release the forcibly closed state of the on-off valve 3 while the state of the ignition button 1 is on. This is because when the on-off valve 3 is released in this state,
This is because only gas flows without ignition spark. When the ignition button 1 is turned off, the forcibly closed state of the on-off valve 3 is released for the first time, and the next time the ignition button 1 is turned on, the on-off valve 3 is opened for the first time.

In some cases, the drain sensor 5 is made of bimetal, and an on / off signal is output at each of the temperatures T1 and T2.
The safety device 6 may be omitted, and the on / off signal may be directly input to the on-off valve control means 2.

The above operation is the same as that of the conventional gas stove with grill. The present embodiment is different from the conventional one in that the reburn control means 7 is provided. A first example of the operation of the reburn control means 7 is shown in FIG.
This will be described with reference to the flowchart of FIG. The flow shown in FIG. 2 is started at regular intervals.

First, in step S11, it is determined whether or not the safety device 6 is operating, and if not, the process ends without performing any operation. When the safety device 6 is operating, the process proceeds to step S12, and it is determined whether a predetermined time t1 has elapsed since the safety device 6 was operated and the on-off valve 3 was closed. If the time t1 has not elapsed, the process proceeds to step S13, where a signal is sent to the on-off valve control means 2, and the signal of the on-off valve 3 forcibly closed from the safety device 6 is released. Even if this signal is sent, the on-off valve control device 2
While the state of the ignition button 1 is ON, the forcible closing state of the on / off valve 3 is not released for the first time in the state where the ignition button 1 is turned off. 1
Is turned on, the on-off valve 3 is opened for the first time. The reason for this is to prevent the possibility of gas flowing unignited, as described in the description of the prior art.

In step S12, when the time t1 has elapsed, the process proceeds to step S14, where a signal for restarting the operation of the safety device is sent to the opening / closing valve control means 2 again. Therefore, when the safety device is operating at this timing (that is, when the temperature detected by the out-of-water sensor 5 has not dropped to T2), the on-off valve control means 2 closes the on-off valve 3 again. When the operation is released by the safety device itself at this timing (that is, when the temperature detected by the out-of-water sensor is T2 or less).
This signal is ignored.

In the above description, "release of the safety device" and "resumption of the operation of the safety device" do not mean that the operation of the safety device is actually released or restarted. To ignore or validate the signal from the safety device. The operation of the safety device 6 itself is performed independently of the operation of the reburn control means 7.

As described above, reignition and combustion can be performed during the operation of the safety device only during the time t1 after the operation of the safety device. Therefore, if re-ignition is performed without putting water in the water dish, the safety device is not reset, so that combustion is stopped after time t1, and re-ignition cannot be performed, thereby maintaining safety.

In step S11, when it is determined that the safety device is operating, it is determined whether the operation has been restarted in step S16, and if so, the process proceeds to step S12. First, the processing may be terminated. By doing so, the operation of the safety device 6 is released only once after the safety device 6 is operated for the first time.

FIG. 3 shows a second example of the operation of the reburn control means 7.
This will be described with reference to the flowchart of FIG. The flow shown in FIG. 3 is started at regular intervals. First, in step S21, it is determined whether or not the safety device 6 is operating.
If not, the process ends without doing anything. When the safety device 6 is operating, the process proceeds to step S22,
It is determined whether a re-ignition operation is being performed. If the reignition operation has not been performed, the process ends without doing anything. If the reignition operation has been performed, the process proceeds to step S23.
Then, a signal is sent to the on-off valve control means 2 to release the signal for forcibly closing the on-off valve 3 from the safety device 6. The operation of the on-off valve control means 2 is the same as the operation described in the description of FIG. Thereby, reignition and combustion are performed even during the operation of the safety device 6.

Next, the flow shifts to step S26, where it is determined whether or not the time t2 has elapsed. The time t2 and the elapsed time are selected from the following modes. Mode 1 t2 is a constant value, and the elapsed time is the elapsed time from the time of re-ignition. Mode 2 t2 is a function f1 (t) of the elapsed time t from the operation of the safety device to the time of re-ignition, and the elapsed time is the elapsed time from the operation of the safety device. Mode 3 t2 is a function f2 (t) of the elapsed time t from the operation of the safety device to the time of re-ignition, and the elapsed time is the elapsed time from the time of re-ignition. The mode 4 t2 is a function g1 (T3) of the temperature T3 measured by the out-of-water sensor at the time of re-ignition, and the elapsed time is the elapsed time from the operation of the safety device. The mode 5 t2 is a function g2 (T3) of the temperature T3 measured by the out-of-water sensor at the time of re-ignition, and the elapsed time is the elapsed time from the time of re-ignition.

In the modes (1) to (4), if the time t from when the safety device 6 operates to when reignition is performed is long, the combustible time t2 may be lengthened, or the sensor 5 may be used for re-ignition. If the detected temperature T3 is low, the combustible time t2 can be lengthened. Functions f1 (t), f2 (t), g1 (t), g2
As a specific form of (t), f1 (t) = K1 / t + A1 f2 (t) = K2 / t + A2 g1 (T3) = K3 * (T3-T2) / T3 + A3 g2 (T3) = K4 * (T3 −T2) / T3 + A4. Here, K1 to K4 and A1 to A4 are constants, and T2 is the release temperature of the safety device. Also, T
When 3 ≦ T2, g2 (T3) = g3 (T3) = 0.

In step S24, if the time t2 has elapsed, the process proceeds to step S25, where a signal for restarting the operation of the safety device is sent to the opening / closing valve control means 2 again. Therefore, when the safety device is operating at this timing (that is, when the temperature detected by the out-of-water sensor 5 has not dropped to T2), the on-off valve control means 2 closes the on-off valve 3 again. If the operation is canceled by the safety device itself at this timing (that is, the temperature detected by the water out sensor is T2 or lower),
This signal is ignored.

In the above description, "release of the safety device" and "resumption of the operation of the safety device" have the same meaning as described in the description of FIG. Although not described, in step S22, it is determined whether re-ignition has been performed for the first time since the activation of the safety device. If not, the process does not proceed to step S23, and the process is performed. It is to end. Therefore, the operation of the safety device 6 is released only once after the operation of the safety device 6 for the first time.

FIG. 4 shows a flowchart of another operation of the reburn control means 7. The flow shown in FIG. 4 is started at regular intervals. First, in step S31,
It is determined whether or not the safety device 6 is operating, and if not, the operation ends without doing anything. If the safety device 6 is operating, the process proceeds to step S32, and it is determined whether or not the time rate of change (temperature gradient) of the temperature detected by the out-of-water sensor 5 is negative.

If the temperature gradient is negative, the process proceeds to step S33, where a signal is sent to the on-off valve control means 2, and the signal of the on-off valve 3 forcibly closed from the safety device 6 is released. The response of the on-off valve control means 2 to this is the same as that described in the description of the flowchart of FIG.

If the temperature gradient is not negative, step S34
Then, a signal for restarting the operation of the safety device is sent to the opening / closing valve control means 2 again. Therefore, when the safety device is operating at this timing (that is, when the temperature detected by the out-of-water sensor 5 has not dropped to T2), the on-off valve control means 2 closes the on-off valve 3 again. If the operation is canceled by the safety device itself at this timing (that is, when the temperature detected by the water-out sensor is T2 or lower), this signal is ignored. In the above description, "release of operation of the safety device" and "resumption of operation of the safety device" have the same meaning as described in the description of FIG.

In step S31, when it is determined that the safety device is operating, it is determined whether the operation has been restarted in step S34, and if so, the process proceeds to step S32. First, the processing may be terminated. By doing so, the operation of the safety device 6 is released only once after the safety device 6 is operated for the first time.

FIG. 5 is a block diagram showing another example of the embodiment of the present invention. The block diagram shown in FIG.
The only difference from the block diagram shown in FIG. 1 is that a second safety device 8 is provided. The operation of the other parts is the same as that of the embodiment shown in FIG. Is omitted, and only the operation of the second safety device 8 will be described.

In the embodiment of the present invention described with reference to FIGS. 1 to 4, the grill can be burned even though the safety device is operating. In some cases, such as when combustion is restarted without water, the temperature inside the grill may increase, leading to a fire. The second safety device 8 is provided in order to prevent such a situation from occurring. The second safety device 8 takes in the output of the out-of-water sensor 5 and, when it reaches T4 higher than T1, which is the set temperature of the safety device 6, Sends a signal to the on-off valve control means 2 to forcibly close the on-off valve 3 irrespective of the output state of the reburn control means 7. Then, the operation of the most combustion control means 7 is reset. When the temperature detected by the out-of-water sensor 5 decreases to T5, the second safety device sends a signal to the on-off valve control means 2 to reset a signal for forcibly closing the on-off valve 3.

It is preferable that T5 = T2 so that the safety device 6 and the second safety device 8 are simultaneously released. However, T5 and T2 do not necessarily have to be the same. In the case of T5 <T2, the safety device 6 is released first, but the opening and closing valve 3 is not opened under any circumstances until the second safety device is released. . On the other hand, when T5> T2, the second safety device 8 is released first, so that the ignition can be performed again by the function of the most combustion means 7 in a state where the safety device 6 is not released.

Even when this signal is sent, the on-off valve controller 2 does not forcibly close the on-off valve 3 while the ignition button 1 is on, and the ignition button 1 is turned off. In this state, the forced closed state of the on-off valve 3 is released for the first time, and the next time the ignition button 1 is turned on, the on-off valve 3 is opened for the first time.

Further, although not shown, a safety device,
If a means for issuing an alarm when the second safety device is activated is provided, an alarm can be issued when the water in the water tray is exhausted or when the temperature in the grill is too high. The possibility of occurrence of a fire or the like can be notified.

[0059]

As described above, according to the present invention, the grill can be reused before the temperature detected by the drain sensor becomes equal to or lower than a predetermined value.

According to the third and fourth aspects of the present invention, it is possible to set so that the combustion can be continued for a longer time as the temperature in the grill decreases.

According to the fifth and sixth aspects of the present invention, the time during which combustion can be continued is a function of the temperature T3 measured by the out-of-water sensor at the time of re-ignition. The combustion continuation time can be set.

In the invention according to claim 7, the possibility of re-combustion of the grill is determined in accordance with the temperature gradient of the temperature detected by the drainage sensor, so that an appropriate combustion continuation time after re-ignition can be accurately determined. Can be set to

In the invention according to claim 8, since the second safety device is provided, overheating due to reburning of the grill can be prevented and safety can be further improved.

According to the ninth aspect of the present invention, an alarm can be issued when the safety device operates, so that the possibility of a fire or the like can be notified to a human.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of an embodiment of the present invention.

FIG. 2 is a flowchart illustrating an example of an operation of a reburn control unit.

FIG. 3 is a flowchart illustrating another example of the operation of the reburn control unit.

FIG. 4 is a flowchart showing another example of the operation of the reburn control means.

FIG. 5 is a block diagram showing another example of the embodiment of the present invention.

FIG. 6 is a diagram showing an outline of a gas stove and a cross-sectional view of a grill portion thereof.

FIG. 7 is a flowchart illustrating an example of the operation of the safety device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Ignition button 2 ... On-off valve control means 3 ... On-off valve 4 ... Burner 5 ... Out-of-water sensor 6 ... Safety device 7 ... Reburn control device 8 ... Second safety device

Claims (9)

[Claims] 1. A gas stove having a grill, comprising a drain sensor for measuring the temperature of a water tray disposed below a grill of the grill, wherein the measured temperature is an operating temperature T.
When the temperature reaches 1, the safety device is activated to extinguish the grill, and the safety device is reset when the measured temperature becomes T2 lower than T1. A predetermined time t1 elapses after the operation of the safety device. In the meantime, the gas stove is characterized in that a means for enabling re-ignition and combustion of the grill even when the safety device is operating is added. 2. A gas stove having a grill, comprising a drain sensor for measuring a temperature of a water tray disposed below a grill of the grill, wherein the measured temperature is an operating temperature T.
When the safety device is activated, the safety device is activated to extinguish the grill by extinguishing the grill and resetting the safety device when the measured temperature becomes T2 lower than T1. A gas stove characterized by being provided with means for enabling re-ignition and for allowing grill burning even when the safety device is in operation until a predetermined time t2 elapses after re-ignition. 3. A gas stove having a grill, comprising a drain sensor for measuring the temperature of a water dispenser disposed below a grill of the grill, wherein the measured temperature is an operating temperature T.
When the safety device is activated, the safety device is activated to extinguish the grill by extinguishing the grill and resetting the safety device when the measured temperature becomes T2 lower than T1. Re-ignition is enabled, and the time t until re-ignition after the safety device is activated is measured. After the safety device is activated, until the time of f1 (t) determined as a function of t has elapsed, the safety device is in operation. The gas stove further comprises means for enabling combustion of the grill. 4. A gas stove having a grill, comprising a drain sensor for measuring the temperature of a water tray disposed below a grill of the grill, wherein the measured temperature is an operating temperature T.
When the safety device is activated, the safety device is activated to extinguish the grill by extinguishing the grill and resetting the safety device when the measured temperature becomes T2 lower than T1. The re-ignition is enabled, and the time t from the activation of the safety device to the re-ignition is measured.
A gas stove is further provided with a means for allowing the grill to burn even when the safety device is in operation until the time of f2 (t) determined as a function of elapses. 5. A gas stove having a grill, comprising a drain sensor for measuring the temperature of a water tray disposed below the grill of the grill, wherein the measured temperature is an operating temperature T.
When the safety device is activated, the safety device is activated to extinguish the grill by extinguishing the grill and resetting the safety device when the measured temperature becomes T2 lower than T1. When re-ignition is enabled and the temperature measured by the out-of-water sensor at the time of re-ignition is T3,
G1 (T3) determined as a function of T3 after the safety device is activated
Gas stoves are provided with means for enabling grill burning even when the safety device is in operation until the time elapses. 6. A gas stove having a grill, comprising a drain sensor for measuring a temperature of a water dispenser disposed below a grill of the grill, wherein the measured temperature is an operating temperature T.
When the safety device is activated, the safety device is activated to extinguish the grill by extinguishing the grill and resetting the safety device when the measured temperature becomes T2 lower than T1. When re-ignition is enabled and the temperature measured by the out-of-water sensor at the time of re-ignition is T3,
After the reignition, until the time of g2 (T3) determined as a function of T3 has elapsed, even if the safety device is operating,
A gas stove characterized by further comprising means for enabling combustion of the grill. 7. A gas stove having a grill, comprising a drain sensor for measuring the temperature of a water tray disposed below a grill of the grill, wherein the measured temperature is an operating temperature T.
When the safety device is activated, the grille is extinguished by activating the safety device and the safety device is reset when the measured temperature becomes T2, which is lower than T1. A means for enabling re-ignition and combustion of the grill even when the safety device is operating while the change rate of the gas stove is negative. 8. One of claims 1 to 7
In the gas stove according to the item, when the measured temperature of the out-of-water sensor reaches T4 higher than T1, the grill is extinguished by the second safety device, and when the measured temperature of the out-of-water sensor decreases to the temperature T5, A gas stove further comprising means for resetting a second safety device. 9. One of claims 1 to 8
Item 3. The gas stove according to item [1], further comprising means for issuing an alarm when a safety device (including a second safety device, if any) is activated.