JP3474988B2 - Gas combustion equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a gas combustion apparatus such as a gas stove.

[0002]

2. Description of the Related Art For example, a gas stove is generally known which is equipped with various electronic devices which are operated by a commercial power source or a battery, and an electronic device of this type is, for example, a gas supply passage to a gas burner. Examples include solenoid valves that open and close, sparkers for ignition, alarms such as lamps and buzzers, electronic circuits that drive and control them. Further, for example, in a gas burner in which a main gas supply path and a sub gas supply path branched from the main gas supply path are connected in parallel, a solenoid valve for opening and closing the main gas supply path is provided and used. When a predetermined cooking mode is selected by a person, the solenoid power valve of the main gas supply path is opened / closed according to the temperature of the food, etc., so that the heating power of the gas burner can be appropriately switched between strong and weak to adjust the heating power. In such a gas stove, the solenoid valve of the main gas supply path is also included in the electronic device. Further, in addition to the gas burner for the stove, in the one provided with the grill burner, the gas supply path to the grill burner is provided for shutting off the gas supply to the grill burner or adjusting the heating power of the grill burner. A solenoid valve is provided as an electronic device.

On the other hand, in a gas stove that uses a battery as a power source for the electronic equipment, for example, the voltage of the battery is monitored, and when the voltage falls below a predetermined voltage, an alarm is issued to prompt the user to replace the battery, or the gas stove Those that stop driving are known. Also, in the case of using a commercial power source, a battery is provided as an auxiliary power source for the electronic device, and by supplying power to the electronic device from the battery during a power failure, the gas stove can be operated even during a power failure. It is also known to have been made.

However, in the conventional gas stove of this type, even when the capacity of the battery is low, as long as the capacity of the battery remains to the extent that the electronic devices can be operated, all the electronic devices are removed from the battery. I was able to power. For this reason, further exhaustion of the battery progresses early, and the gas stove becomes inoperable at an early stage, and the battery must be replaced with a new one at an early stage.
Usability was impaired.

[0005]

DISCLOSURE OF THE INVENTION The present invention solves such inconvenience, and uses a battery as a power source for electronic equipment, or a gas combustion system that uses a battery as an auxiliary power source when a commercial power source, which is a power source for electronic equipment, fails. It is an object of the present invention to provide a gas combustion device that is excellent in usability and can perform combustion operation of a gas burner for as long as possible when the battery level becomes low or when a commercial power source fails. .

[0006]

To achieve the above object, a first aspect of the present invention relates to an ignition / extinction electronic device for performing ignition / extinction of a gas burner, and a predetermined combustion operation of the gas burner. Of additional electronic device for performing additional control or predetermined notification, a battery as a power source of each electronic device, and a battery voltage for monitoring whether or not the voltage of the battery is equal to or higher than a predetermined voltage In a gas combustion apparatus including a monitoring unit, when it is determined by the battery voltage monitoring unit that the voltage of the battery has become lower than a predetermined voltage, it is possible to perform a combustion operation of the gas burner.
Which comprising the feed limiting means for enabling power supply to the ignition and extinguishing electronics from the battery, and prohibits the power supply to said additional electronic equipment other than electronic equipment ignition-extinguishing Is.

According to the first aspect of the present invention, when the voltage of the battery becomes a predetermined voltage or less and the remaining amount of the battery becomes small, the power supply limiting means causes the power source other than the ignition / extinguishing electronic device. Since the power supply to the additional electronic device is prohibited, additional control or predetermined notification of the combustion operation of the gas burner using the additional electronic device will not be performed, but power supply to the ignition / extinguishing electronic device will not be performed. Therefore, the minimum required combustion operation of the gas burner can be performed. Then, at this time, the load of the battery is only the ignition / extinguishing electronic device, so that the consumption of the battery is suppressed and the minimum required combustion operation of the gas burner can be performed for a relatively long period of time.

Therefore, according to the first aspect of the present invention, the combustion operation of the gas burner can be performed for as long as possible when the remaining amount of the battery is low, and the usability is excellent. You can

In order to achieve the above-mentioned object, a second aspect of the present invention is to provide an ignition / extinction electronic device for performing ignition / extinction of a gas burner and a predetermined additional operation for combustion operation of the gas burner. and additional electronics for controlling or predetermined notification, the at gas combustion apparatus having a battery as an auxiliary power source during a power failure of the commercial power source is a power source of the electronic device, when the power of the commercial power source Combustion of the gas burner
To allow the feeding before SL cell in order to enable executing the operation to the ignition and extinguishing electronics, and a feed limiting means for inhibiting the supply of power to said additional electronic equipment other than electronic equipment ignition-extinguishing It is characterized by having.

According to the second aspect of the present invention, when the commercial power supply fails, the power supply limiting means prohibits power supply from the battery to the additional electronic equipment other than the ignition / extinguishing electronic equipment. Therefore, although additional control or predetermined notification of the combustion operation of the gas burner using the additional electronic device is not performed, it is possible to supply power from the battery to the ignition / extinguishing electronic device. Limited combustion operation can be performed. At this time, the load of the battery is only the ignition / extinguishing electronic device, so that the consumption of the battery is suppressed, and the minimum required combustion operation of the gas burner using the battery as an auxiliary power source is performed for a relatively long period of time. It becomes possible.

Therefore, according to the second aspect of the present invention, in the event of a power failure of the commercial power source, the combustion operation of the gas burner can be performed for as long as possible by using the battery as the auxiliary power source, which is excellent in usability. It can be

In the first and second aspects of the present invention, the ignition / extinguishing electronic device is an electromagnetic device provided in a gas supply passage to at least the gas burner for supplying and shutting off the gas to the gas burner. And a solenoid valve drive control circuit for controlling the opening and closing of the solenoid valve.

When the gas burner is equipped with an ignition device for electrically igniting the ignition device, the ignition / extinguishing electronic device also includes the ignition device.

In this case, in the first aspect, when the voltage of the battery drops below a predetermined voltage,
In the aspect, when the commercial power source is cut off, the solenoid valve is opened and closed by the power supply from the battery,
It is possible to supply gas to the gas burner and shut it off.
Furthermore, when equipped with an ignition device that electrically ignites,
Since the ignition device can be operated by supplying power from the battery, the gas burner can be ignited and extinguished without any trouble. If the gas burner is not equipped with an ignition device that electrically ignites, the gas burner can be ignited to, for example, a piezoelectric ignition device that does not require a power source, a match, or a commercially available lighter.

Further, in the first and second aspects of the present invention, for example, a main gas supply passage connected to the gas burner and a branch from the main gas supply passage are provided in parallel with the main gas supply passage to the gas burner. When the auxiliary gas supply path is connected and the thermal power adjustment solenoid valve that opens and closes the main gas passage to adjust the thermal power when the gas burner burns, the additional electronic device is at least the thermal power adjustment. Including solenoid valve for.

According to this, in the first aspect,
When the voltage of the battery drops below a predetermined voltage or when the commercial power source fails in the second aspect, the heat power of the gas burner can be adjusted by opening and closing the heat power adjusting solenoid valve of the sub gas supply passage. Although it becomes impossible, as described above, since the minimum required simple combustion operation of the gas burner can be performed, the minimum required function of the gas combustion device is ensured. By prohibiting the power supply to the thermal power adjustment solenoid valve, the load on the battery is reduced, and the minimum required combustion operation of the gas burner can be performed for as long as possible.

In this case, when the heat adjustment solenoid valve is a self-holding solenoid valve that opens and closes due to temporary energization, the power supply limiting means opens the heat adjustment solenoid valve. Therefore, it is preferable to prohibit the power supply to the thermal power adjusting solenoid valve after energizing the thermal power adjusting solenoid valve.

That is, if the power supply to the heat power adjusting solenoid valve is prohibited while the heat power adjusting solenoid valve is closed, gas is supplied to the gas burner only from the sub gas supply passage, and the gas supply is performed. Although the amount becomes small, it becomes impossible to obtain the normal heating power of the gas burner, but after the heating power control solenoid valve consisting of the self-holding solenoid valve is opened as described above, the additional electronic device is used. By prohibiting the power supply from a battery to a certain thermal power control solenoid valve, gas will be supplied to the gas burner from both the main gas supply path and the sub gas supply path, and the required thermal power will be obtained. You can

Alternatively, the thermal power control solenoid valve may be constituted by an energization holding type solenoid valve which is closed by continuous energization and opened by interruption of the energization.

According to this, even if the power supply limiting means prohibits the power supply to the thermal power adjusting solenoid valve, the thermal power adjusting solenoid valve is kept in the open state thereafter, so that the main gas is supplied to the gas burner. Gas is supplied from both the supply path and the auxiliary gas supply path, so that the required thermal power can be obtained.

In the first and second aspects of the present invention, when a notification lamp or a notification buzzer for performing a predetermined notification is provided, the additional electronic device includes the notification lamp or the notification buzzer.

According to this, in the first aspect,
When the voltage of the battery drops below a predetermined voltage or when the commercial power source fails in the second aspect, the predetermined notification by the notification lamp or the notification buzzer is not performed, but as described above, the gas burner is used. Since the minimum required simple combustion operation can be performed, the minimum required function as a gas combustion device is secured. Then, by prohibiting the power supply to the notification lamp and the notification buzzer, the load on the battery is reduced, and the minimum required combustion operation of the gas burner can be performed for as long as possible.

Further, in the first and second aspects of the present invention, the gas combustion device performs the gas burner for mounting and heating the food to be cooked, the grill burner, and gas supply to the grill burner and shutting off the gas. Therefore, when the gas stove includes a grill solenoid valve provided in a gas supply path to the gas burner, the power supply limiting means includes means for inhibiting power supply from the battery to the grill solenoid valve.

According to this, in the first aspect,
When the voltage of the battery drops below a predetermined voltage, or in the second aspect, when the commercial power source fails, combustion operation of the grill burner is disabled, and cooking such as fish cooking by the grill burner can be performed. Although it disappears, the combustion operation by the gas burner can be performed, so that the gas burner can be used for emergency cooking instead of the grill burner. Therefore, it is excellent in usability.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the first aspect of the present invention will be described with reference to FIG. FIG. 1 is a system configuration diagram of the gas combustion apparatus of the present embodiment.

Referring to FIG. 1, the gas combustion apparatus of this embodiment is, for example, a gas stove with a grill, 1 is a gas burner for the stove, 2 is a grill burner, 3 is these burners 1,
2 is a gas supply path for supplying gas to 2.

The stove gas burner 1 heats a food A (including a cooking container) placed on a Gotoku (not shown), and a temperature at which the temperature of the food A is detected at the center thereof. A detector 4 is provided. An ignition electrode 5 for igniting the gas burner 1 is provided near the gas burner 1 for the stove.

The grill burner 2 heats the food B to be stored in the grill cabinet 6, and an ignition electrode 7 is provided in the vicinity of the grill burner 2 like the gas burner 1 for the stove.

The gas supply passage 3 is a source gas supply passage 8 common to both burners 1 and 2, and a main gas for a stove which is branched from the source gas supply passage 8 and is connected to the stove gas burner 1 and the grill burner 2, respectively. A supply path 9 and a grill main gas supply path 10 are provided.

The main gas supply passage 9 for the stove is provided with a main solenoid valve 11, a switching solenoid valve 12 (fire power adjusting solenoid valve) and a flow rate adjusting mechanism 13 in this order from the upstream side. And
The main gas supply path 9 is provided between the main solenoid valve 11 and the switching solenoid valve 12.
The auxiliary gas supply path 9a is branched from the auxiliary gas supply path 9a.
The letter a joins the main gas supply passage 9 between the switching solenoid valve 12 and the flow rate adjusting mechanism 13, and is connected to the gas stove burner 1 in parallel with the main gas supply passage 9. The main gas supply passage 9 and the good gas supply passage 9a may be connected to the stove gas burner 1 while being branched.

The grill gas supply passage 10 is provided with a main solenoid valve 14 (grill solenoid valve) and a flow rate adjusting mechanism 15 in this order from the upstream side.

In this case, each of the main solenoid valves 11 and 14 is an energization-holding type solenoid valve, and each of them is a gas burner 1 for the stove.
And the ignition / extinguishing button 16 for the stove and the ignition / extinguishing button 17 for the grille, which are push buttons provided on the housing (not shown) of the gas stove corresponding to the grill burner 2, the spring is operated to push the spring. The valves are mechanically opened against the urging force of 11a and 14a, and in this state, the main solenoid valves 11 and 14 are continuously energized to ignite.
Even if the ignition operation of the fire extinguishing buttons 16 and 17 is released, the valve is kept open. And each main solenoid valve 1
By shutting off the power supply to the springs 1 and 14,
The main solenoid valves 11 and 14 are closed by the urging force of a.

The switching solenoid valve 12 is, for example, a self-holding type solenoid valve, and by temporarily energizing it, the open / closed state is switched from open to closed or from closed to open, and then energized. Even if it is refused, the open / closed state is maintained by the magnetic force of the magnet.

The flow rate adjusting mechanisms 13 and 15 are for adjusting the flow rates of the gases flowing through the main gas supply passages 9 and 10 by manually adjusting the openings thereof.

In FIG. 1, reference numeral 18 denotes a microcomputer (hereinafter, referred to as a microcomputer) for controlling the operation of the gas stove, and reference numerals 19, 20, 21 denote the main solenoid valves 14 and 11 and the switching solenoid valve 12, respectively, according to instructions from the microcomputer 18. The main solenoid valve drive circuit for the grill, the main solenoid valve drive circuit for the stove, and the switching solenoid valve drive circuit that perform energization drive 22 are the energization drive of the sparker 22a that causes the spark electrodes 5 and 7 to generate spark discharge according to the instruction of the microcomputer 18. Sparker drive circuit,
Reference numeral 23 denotes a display drive circuit that energizes and drives the display lamps 23a to 23c that perform predetermined notification according to an instruction from the microcomputer 18.
Reference numeral 4 denotes a buzzer drive circuit that energizes and drives a buzzer 24a that performs a predetermined notification according to instructions from the microcomputer 18, reference numeral 25 denotes a power supply circuit that supplies power from the battery 26, which is the power source of the gas stove, to the microcomputer 18 and the drive circuits 19 to 24, and 27 denotes a battery Battery voltage monitoring circuit (battery voltage monitoring means) for monitoring the voltage of 26, 2
Reference numeral 8 denotes an operating device for the user to instruct the microcomputer 18 to perform temperature control such that the heating temperature of the cooked food A in the stove gas burner 1 is maintained at a certain constant temperature.

The power supply circuit 25 is connected to microswitches 29 and 30 which are closed by the ignition operation of the ignition / extinguishing buttons 16 and 17 and which are closed and held by a heart cam mechanism (not shown). When the micro switch 29 is closed, the power supply circuit 25 uses the battery 2
The main solenoid valve drive circuit 20 for the stove and the switching solenoid valve drive circuit 21 are supplied with power from 6 to enable the energization of the main solenoid valve 11 and the switching solenoid valve 12 by these drive circuits 20, 21. Similarly, the power supply circuit 25 includes a micro switch 30.
When the battery is closed, power is supplied from the battery 26 to the grill main solenoid valve drive circuit 19 so that the drive circuit 19 can energize the main solenoid valve 14.

Further, in the power supply circuit 25, when one of the micro switches 29 and 30 is closed, the battery 26 to the microcomputer 18, the sparker drive circuit 22, the display drive circuit 23,
Power is supplied to the buzzer drive circuit 24 to activate the microcomputer 18, and the drive circuits 22 to 24 are enabled to energize the sparker 22a, the display lamps 23a to 23c, and the buzzer 24a.

Furthermore, the power supply circuit 25 applies a voltage according to the voltage of the battery 26 to the battery voltage monitoring circuit 27 when either of the micro switches 29 and 30 is closed.

The micro-switches 29 and 30 are opened by extinguishing the ignition / fire-extinguishing buttons 16 and 17, respectively, and when both the switches 29 and 30 are open, the power supply circuit 25 does not supply power to the microcomputer 18 or the like. In addition, the drive circuits 19 to 24 are supplied with power from the power supply circuit 25, and in response to an instruction from the microcomputer 18, the main solenoid valves 14 and
11, switching solenoid valve 12, sparker 22a, indicator lamp 2
3a to 23c and the buzzer 24a are energized to operate them. When each of the micro switches 29 and 30 is closed, the power supply circuit 25 sends a signal to that effect to the microcomputer 18
Output to.

The battery voltage monitoring circuit 27 monitors the voltage of the battery 26 by the voltage supplied from the power supply circuit 27 when the microswitch 29 or 30 is closed, and the battery voltage becomes equal to or lower than a predetermined voltage. At that time, a signal indicating that is output to the microcomputer 18.

When the display lamps 23a to 23c are turned on, for example, a notification that the gas burner 1 for the stove is in the combustion operation, a notification that the grill burner 2 is in the combustion operation, and the temperature control are performed. Notify to that effect.

The buzzer 24a informs that power supply will be restricted, which will be described later, based on its sound.

The microcomputer 18, in a state in which power is supplied from the power supply circuit 25, gives an instruction from the operating unit 28 and a signal given from the power supply circuit 25 that indicates the closing of each of the micro switches 29 and 30, a detection signal of the temperature detector 4, Battery voltage monitoring circuit 27
The sparker drive circuit 22, the grill main solenoid valve drive circuit 19, the stove main solenoid valve drive circuit 2 based on the output of the
0, the switching solenoid valve drive circuit 21, the display drive circuit 23, and the buzzer drive circuit 24 to control the operation of the gas stove such as the ignition control of the gas burner 1 and the grill burner 2 and the temperature control on the gas burner 1 side ( Details of these controls will be described later).

Further, the microcomputer 18 is provided with a power supply limiting means 31 as its functional configuration, and the power supply limiting means 31 outputs the battery voltage monitoring circuit 27 so that the voltage of the battery 26 drops below a predetermined voltage. When it is understood,
As will be described later, control is performed to limit the power supply from the battery 26.

In accordance with the configuration of the present invention, the ignition electrode 5, the sparker 22a and the sparker drive circuit 22 constitute an ignition device 32, and the main solenoid valve drive circuit 20 for the stove and the microcomputer 18 are solenoid valve drive control circuits. And 33. Then, the ignition device 32 and the solenoid valve drive control circuit 3
3 is an electronic device 34 for ignition / extinguishing together with the main solenoid valve 11.
And the switching solenoid valve 12 and the display lamps 23a to 23a.
c is an additional electronic device.

Next, the operation of the gas stove with a grill will be described.

First, the operation when the remaining amount of the battery 26 is sufficient (when the voltage of the battery 26 is higher than the predetermined voltage in the battery voltage monitoring circuit 27) will be described.

For example, when the user ignites the ignition / extinguishing button 16 to cook the food A with the gas burner 1 for the stove, the main solenoid valve 11 is mechanically opened and at the same time the micro switch 29 is operated. Closes. At this time, the power supply circuit 25 supplies power to the respective drive circuits 20 to 24 except the grill main solenoid valve drive circuit 19 and the microcomputer 18 to start them, and at the same time, the micro switch 29 corresponding to the gas burner 1 for the stove is closed. The microcomputer 1 sends a signal indicating that
Output to 8. Further, the power supply circuit 25 applies a voltage according to the voltage of the battery 26 to the battery voltage monitoring circuit 27, and at this time,
The battery voltage monitoring circuit 27 outputs to the microcomputer 18 a signal indicating that the voltage of the battery 26 is higher than a predetermined voltage, that is, that the remaining amount of the battery 26 is sufficient.

The microcomputer 18 activated as described above is
Instructing the switching solenoid valve drive circuit 21, the switching solenoid valve drive circuit 21 causes the switching solenoid valve 1 which is a self-holding type solenoid valve.
The switching solenoid valve 12 is temporarily energized so that the switching solenoid valve 2 is opened, and the switching solenoid valve 12 is opened. Also,
The main solenoid valve drive circuit 20 for the stove is instructed to cause the main solenoid valve drive circuit 20 to energize the main solenoid valve 11, which is an energization holding type solenoid valve, and hold the main solenoid valve 11 open. Further, the microcomputer 18 instructs the sparker driving circuit 22 to cause the sparker driving circuit 22 to perform the sparker 2 for a predetermined time.
2a is energized to generate a spark discharge on the ignition electrode 5.

As a result, the gas burner 1 is ignited while being supplied with sufficient gas from both the main gas supply passage 9 and the auxiliary gas supply passage 9a, and the combustion of the gas burner 1 is started. Even if the ignition / extinguishing button 16 is released, the heart cam mechanism keeps the ignition / extinguishing button 16 in the operated state and the micro switch 29 is kept closed.

When the gas burner 1 is ignited, the microcomputer 18 monitors whether or not the gas burner 1 is ignited by a thermocouple or the like (not shown) provided in the vicinity of the gas burner 1, and when the gas burner 1 ignites normally. First, the display drive circuit 23 energizes the display lamp 23a to light it, and notifies that the combustion operation of the gas burner 1 is being performed. When the gas burner 1 does not ignite normally, the main solenoid valve 11 is de-energized by the main solenoid valve drive circuit 20 for the stove, the main solenoid valve 11 is closed, and the gas burner 1 is closed. Cut off gas supply.

The above-described ignition operation (including operation at the time of non-ignition) is also performed when the user ignites the ignition / extinction button 17 in order to perform cooking by the grill burner 2. In this case, the grill main solenoid valve drive circuit 19
While the main solenoid valve 14 is energized by the
2 causes a spark discharge to the ignition electrode 7 via the sparker 22a to ignite the grill burner 2. When the grill burner 2 normally ignites, the display drive circuit 23 energizes the display lamp 23b to light it.

In the combustion operation of the stove gas burner 1 as described above, the user operates the operation unit 28 to operate the microcomputer 18
When instructing to perform the temperature control, the microcomputer 1
The display driving circuit 23 energizes the display lamp 23c to turn on the display lamp 23c, thereby informing that the mode is a temperature control control mode. Then, the microcomputer 18 is based on the heating temperature of the cooking product A obtained by the temperature detector 4, for example, the heating temperature is a predetermined temperature set in advance or a temperature set by the user (hereinafter, referred to as temperature control temperature). The switching solenoid valve drive circuit 21 appropriately energizes the switching solenoid valve 12 to control the switching solenoid valve 12 so that the switching solenoid valve 12 is opened and closed.

That is, the microcomputer 18 uses the temperature detector 4
When the heating temperature of the cooked food A obtained by the above becomes higher than the temperature control temperature, the switching electromagnetic valve drive circuit 21 temporarily supplies a current to the switching electromagnetic valve 12 to close it, The switching solenoid valve 12 is closed. At this time, a small amount of gas is supplied to the gas burner 1 only from the auxiliary gas supply passage 9a, and the heating power of the gas burner 1 becomes low.

Further, when the heating temperature of the cooked food A becomes lower than the temperature control temperature, the microcomputer 18 causes the switching solenoid valve drive circuit 21 to temporarily supply the switching solenoid valve 12 with a current for opening it. Is energized to open the switching solenoid valve 12. At this time, gas is supplied to the gas burner 1 from both the main gas supply passage 9 and the sub gas supply passage 9a, and the thermal power of the gas burner 1 becomes strong.

As a result, the heating power of the gas burner 1 is adjusted so that the temperature of the cooked food A is maintained at the controlled temperature.

Next, for example, the cooked food A by the gas burner 1
When the user extinguishes the ignition / fire extinguishing button 16 after completion of the heating and cooking, the micro-switch 29 is activated because the ignition / extinguishing button 16 returns to the starting position by the heart cam mechanism.
Opens. At this time, the power supply from the power supply circuit 25 to the main solenoid valve drive circuit 19 for the stove is stopped, the power supply to the main solenoid valve 11 is cut off, and the main solenoid valve 11 is closed by the urging force of the spring 11a. As a result, the gas supply to the gas burner 1 is cut off, and the gas burner 1 is extinguished. Also,
At this time, the power supply to the display lamp 23a by the display drive circuit 23 is also cut off, and the display lamp 23a is turned off. Furthermore, when the grill burner 2 is not used, the power supply from the power supply circuit 25 to the microcomputer 18 is also stopped.
Such a fire extinguishing operation is similarly performed when the user extinguishes the ignition / fire extinguishing button 17 during the combustion operation of the grill burner 2.

In the gas stove according to the present embodiment, the microcomputer 18 monitors whether or not there is a misfire in each of the burners 1 and 2 by a thermocouple (not shown) regardless of whether the gas burner 1 or the grill burner 2 is burning. When the burners 1 and 2 are misfired, the main solenoid valve drive circuits 20 and 19 corresponding thereto are instructed to cut off the power supply to the main solenoid valves 11 and 14, whereby the main solenoid valves 11 and 14 are shut off. The burners 1 and 2 are extinguished by closing the valves 11 and 14. Further, during the combustion operation of the gas burner 1, the microcomputer 18 monitors the heating temperature of the cooking product A obtained by the temperature detector 4 at any time, and if the heating temperature becomes excessively high, it is the same as in the case of misfire. Then, the main solenoid valve 11 is closed to extinguish the gas burner 1.

Next, the operation when the remaining amount of the battery 26 becomes small and the voltage thereof drops below the predetermined voltage in the battery voltage monitoring circuit 27 will be described.

For example, when the voltage of the battery 26 becomes equal to or lower than a predetermined voltage during the combustion operation of the gas burner 1, a signal indicating that fact is given from the battery voltage monitoring circuit 27 to the microcomputer 18.

At this time, first, the power supply limiting means 31 of the microcomputer 18 instructs the buzzer drive circuit 24 to make the buzzer 24
energize a for a certain time to make the buzzer 24a ring,
The user is notified that power supply will be limited as described below.

Next, the power supply limiting means 31 of the microcomputer 18
Means to temporarily energize the switching solenoid valve 12 with a current for opening the switching solenoid valve 12 by the switching solenoid valve drive circuit 21 (if the opening / closing state of the switching solenoid valve 12 cannot be detected, the current is forcibly energized). In a device having a means for detecting the open / closed state, the switching solenoid valve 12 is energized only in the closed state.
Is held in the open state, the switching solenoid valve drive circuit 21
Is continuously given an instruction not to energize the switching solenoid valve 12, and the energization of the switching solenoid valve 12 thereafter by the switching solenoid valve drive circuit 21 is prohibited. In addition, the microcomputer 18
The power supply limiting means 31 instructs the display drive circuit 23 to
Each display lamp 23a to 23c by the display drive circuit 23
The subsequent energization to is prohibited. Further, the power supply limiting means 31 of the microcomputer 18 instructs the grill main solenoid valve drive circuit 19 to prohibit subsequent energization of the main solenoid valve 14 by the main solenoid valve drive circuit 19. In this case, when the grill burner 2 is in the combustion operation, the main solenoid valve 14 is de-energized, the main solenoid valve 14 is closed, and the combustion operation of the grill burner 2 is stopped.

On the other hand, the microcomputer 18 does not prohibit the main solenoid valve drive circuit 20 for the stove from energizing the main solenoid valve 11. Therefore, the ignition / fire button 16 is extinguished, or As long as the gas burner 1 does not misfire or the cooking temperature of the food A becomes excessively high, the main solenoid valve drive circuit 20 operates the main solenoid valve 1 during the combustion of the gas burner 1.
1 continues to be energized, the main solenoid valve 11 is kept open, and the combustion operation of the gas burner 1 continues. In this case, the heat power of the gas burner 1 can be arbitrarily adjusted by operating the flow rate adjusting mechanism 13.

Further, for example, when the gas burner 1 is ignited, when the signal indicating that the voltage of the battery 26 is equal to or lower than the predetermined voltage is given from the battery voltage monitoring circuit 27 to the microcomputer 18, the power supply limiting means 31 of the microcomputer 18 is activated. As in the case described above, the buzzer drive circuit 24 energizes the buzzer 24a for a certain period of time to cause the buzzer 24a to ring and inform the user that power supply is limited. Further, the power supply limiting means 31 of the microcomputer 18 temporarily energizes the switching solenoid valve 12 with a current for opening the switching solenoid valve 12 by the switching solenoid valve drive circuit 21 to open the switching solenoid valve 12. After keeping the valve state, the switching solenoid valve drive circuit 21 prohibits subsequent energization of the switching solenoid valve 12, and the display drive circuit 23 prohibits subsequent energization of the respective display lamps 23a to 23c, Further, the main solenoid valve drive circuit 19 prohibits subsequent energization of the main solenoid valve 14.

On the other hand, the microcomputer 18 does not prohibit the main solenoid valve drive circuit 20 for the stove and the sparker drive circuit 22 from energizing the main solenoid valve 11 and the sparker 22a, and the ignition / extinction button 16 is ignited. By the operation, the gas burner 1 is ignited by the operation of the main solenoid valve drive circuit 20 for the stove and the sparker drive circuit 22 in the same manner as in the normal case (when the remaining amount of the battery 26 is sufficient).

Due to the power supply limitation as described above, in the combustion operation of the gas burner 1 thereafter, the temperature control by the opening / closing of the switching solenoid valve 12 is not performed regardless of the operation of the operating device 28, but the temperature of the gas burner 1 is not controlled. Since the minimum required combustion operation (including ignition / extinction) other than adjustment control is performed in the same manner as in the normal case, cooking can be performed by the combustion operation of the gas burner 1. Moreover, although the notification by the respective display lamps 23a to 23c is not performed,
Since the notification does not affect the combustion operation itself of the gas burner 1 such as the fact that the combustion operation of the gas burner 1 is being performed, even if the notification is not issued, there is not much trouble. Further, although the main solenoid valve 14 is held in the closed state and the combustion operation of the grill burner 2 is not performed, the combustion operation of the gas burner 1 is performed, so that the gas burner 1 can be used as a substitute for cooking. .

In this case, the power supply from the battery 26 through the power supply circuit 25 is mainly performed only to the main solenoid valve 11, the sparker 22a, and the microcomputer 18 due to the above-mentioned power supply restriction, so that the load on the battery 26 is small. Will be things.
As a result, the consumption of the battery 26 can be delayed as much as possible, and the combustion operation of the gas burner 1 can be performed for a relatively long period of time. Therefore, for example, when the user has not prepared a spare battery 26, the combustion operation of the gas burner 1 can be performed for a relatively long time without promptly replacing the battery 26 with a new battery 26, which is convenient for use.

In addition, when the above-mentioned power supply is limited, the switching solenoid valve 12, which is a self-holding solenoid valve, is temporarily energized with a current for opening it so that the switching solenoid valve 12 is opened. After that, since the switching solenoid valve 12 is prohibited from being energized, the switching solenoid valve 12 is held in the closed state when the remaining amount of the battery 26 becomes low, for example, during temperature control. Therefore, the amount of gas supplied to the gas burner 1 is not kept small, and the gas is supplied to the gas burner 1 from both the main gas supply passage 9 and the sub gas supply passage 9a. It is possible to secure firepower.

Next, one embodiment of the second aspect of the present invention will be described with reference to FIG. FIG. 2 is a system configuration diagram of the gas combustion apparatus of this embodiment. The gas combustion apparatus of the present embodiment is a gas stove with a grill having the same basic configuration as that of FIG. 1, and the same components as in FIG.
The same reference numerals are given and the description thereof is omitted.

Referring to FIG. 2, the grill-equipped gas stove of this embodiment uses an AC commercial power supply 35 as a main power supply, and a power supply circuit 25 ′ connected to the commercial power supply 35.
Generates direct current from the commercial power supply 35 and supplies power to the microcomputer 18 and the drive circuits 19 to 24 as in the case of FIG. In this case, the gas stove with a grill of the present embodiment is provided with the battery 36 as an auxiliary power source (emergency power source) when the commercial power source 35 fails, and the power supply circuit 25 ′ automatically removes the battery 36 at the time of power failure. As a power source, power is supplied to the microcomputer 18 and the like. Further, the power supply circuit 25 ′ outputs a signal to that effect to the microcomputer 18 during a power failure (when power is supplied from the battery 36).

The other structure is the same as that of FIG.
The battery voltage monitoring circuit 2 of FIG.
7 is not provided.

In the gas stove with a grill according to the present embodiment, the normal operation of the commercial power source 35 is the same as the normal operation of that of FIG. 1 (the description thereof is omitted).

On the other hand, for example, when the commercial power supply 35 fails during the combustion operation of the gas burner 1, power is supplied from the battery 36 to the microcomputer 18 and the drive circuits 19 to 24 by the power supply circuit 25 ', and a signal to that effect is sent. It is given to the microcomputer 18. At this time, the power supply limiting means 31 of the microcomputer 18
In the same manner as in FIG. 1, the buzzer drive circuit 24 energizes the buzzer 24a to inform that the power supply is limited. Further, the main solenoid valve 14 for the grill main solenoid valve drive circuit 19 and the display drive circuit 23 and the display lamps 23a to 23a.
The switching solenoid valve drive circuit 21 energizes the switching solenoid valve 12 with a current that causes the switching solenoid valve 12 to open, and thereafter the switching solenoid valve drive circuit 21 supplies the switching solenoid valve 12 with the current. Do not energize. At this time, the microcomputer 18 continues to energize the main solenoid valve 11 by the main solenoid valve drive circuit 20 for the stove without prohibition, and the combustion operation of the gas burner 1 is continued.

When the ignition / extinguishing button 16 is ignited in order to perform the combustion operation of the gas burner 1 at the time of power failure, for example, the power supply circuit 25 'supplies power from the battery 36 to the microcomputer 18 and the drive circuits 19 to 24, and A signal indicating that is given to the microcomputer 18. Then, as in the case described above, the microcomputer 18 causes the buzzer 24a to give an alarm, and the grill main solenoid valve drive circuit 19,
Energizing the main solenoid valve 14, the display lamps 23a to 23c, and the switching solenoid valve 12 by the display drive circuit 23 and the switching solenoid valve drive circuit 21 is prohibited, while the main solenoid valve drive circuit for the stove is similar to that of FIG. 20 and sparker drive circuit 22
Then, the main solenoid valve 11 and the sparker 22a are energized to ignite the gas burner 1.

With such an operation, in the event of a power failure using the battery 36 as a power source, the combustion operation of the grill burner 2, the temperature control operation in the gas burner 1, and the display lamps 23a to 23a are performed.
Although the notification by c is not performed, the minimum required combustion operation other than the temperature control of the gas burner 1 can be performed without any trouble. At this time, since the main solenoid valve 14, the switching solenoid valve 12, and the display lamps 23a to 23c are not energized, the load on the battery 36 is reduced, and the combustion operation of the gas burner 1 by the battery 36 is relatively long. It can be performed over a long period of time and is easy to use.

Further, the energization of the switching solenoid valve 12 is prohibited after the switching solenoid valve 12 is opened, so that the necessary heating power of the gas burner 1 can be secured.

In this embodiment, the power supply limiting means 31 is operated when the commercial power source 35 fails, but the power supply limiting means 31 may be operated when the battery voltage drops. In addition, a first power supply restriction (for example, prohibition of energization to the display drive circuit 23 and the display lamps 23a to 23c) is performed at the time of power failure, and a second power supply restriction (for example, the solenoid valve drive circuit 19 and Main solenoid valve 14
Power may be prohibited).

In each of the embodiments described above, the main solenoid valve 1 is used when power supply is limited during the combustion operation of the grill burner 2.
4 is forcibly stopped to stop the combustion operation of the grill burner 2. However, until the ignition / fire button 17 is extinguished by the end of cooking by the grill burner 2, the main solenoid valve is operated. The energization of 14 may be continued, and thereafter the energization of the main solenoid valve 14 may be prohibited.

In each of the above embodiments, the gas burner 1
When the power supply is limited during the combustion operation of the gas burner 1
I tried to continue the combustion operation of the main solenoid valve 1
1 may be forcibly closed to stop the combustion operation of the gas burner 1, and thereafter, when the ignition / fire extinguishing button 16 is ignited and operated again, power supply may be limited. Further, in each of the above-described embodiments, the case where the self-holding type switching solenoid valve 12 is used has been described as an example. However, the switching solenoid valve 12 is maintained in the closed state by continuous energization and its energization is performed. A solenoid valve of a current-carrying holding type may be used in which the valve is held open by a spring or the like by shutting off. When such an energization-holding type solenoid valve is used as the switching solenoid valve 12, the energization of the switching solenoid valve 12 is simply prohibited, and the valve is held in the open state. Switching solenoid valve 12 using self-holding solenoid valve
The same effect as in the case where the subsequent energization is prohibited after being energized once is obtained.

In each of the above embodiments, the display lamp 2 is used.
3a to 23c may be replaced by a buzzer,
The buzzer 24a may use a lamp instead.

In each of the above embodiments, the microcomputer 18
Since the main solenoid valve drive circuits 19, 20 and the like are controlled by means of the above, power is supplied to the microcomputer 18 even when power supply is restricted. When operating by a separate circuit, the power supply to the microcomputer 18 may be stopped.

Further, in each of the above-mentioned embodiments, when the power supply is limited, the main solenoid valve 14 is prohibited from being energized so that the combustion operation of the grill burner 2 cannot be performed. For example, like the gas burner 1 side, the grill burner 1 side is not operated. When the switching solenoid valve is provided on the second side so as to be able to automatically adjust its heating power, the main solenoid valve 14 is not energized but only the switching solenoid valve is energized to prevent the grill burner 2 from operating. The minimum required combustion operation may be performed. When both the stove gas burner 1 and the grill burner 2 are being used, the power supply to the grill burner 2 is restricted (the solenoid valve drive circuit 19 and the main solenoid valve 14 are not energized), and the grill burner 2 is used independently. If the grill burner 2 is used, the power supply restriction may not be performed for the grill burner 2.

In the second embodiment, the power supply to the microcomputer 18 or the like is performed when either the ignition / fire extinguishing operation button 16 or 17 is ignited. Alternatively, the power may be constantly supplied.

Further, in each of the above-described embodiments, the sparker drive circuit 22 is provided as the ignition device to electrically discharge, but the well-known piezoelectric ignition device which does not require a power source is provided. In this case, the piezoelectric ignition device is not included in the ignition / extinguishing electronic device.

Further, in each of the above embodiments, the gas stove with a grill has been described as an example, but the present invention is not limited to this and can be applied to a gas heater or the like.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of an embodiment of a gas combustion apparatus according to the first aspect of the present invention.

FIG. 2 is a system configuration diagram of an embodiment of a gas combustion apparatus according to the second aspect of the present invention.

[Explanation of symbols]

1 ... Gas burner, 2 ... Grill burner, 3 ... Gas supply passage,
9 ... Main gas supply passage, 9a ... Sub gas supply passage, 11, 14 ...
Main solenoid valve, 12 ... Switching solenoid valve (solenoid valve for adjusting heat power, additional electronic equipment), 26, 36 ... Battery, 23a to 23c ... Indicator lamp (notification lamp, additional electronic equipment), 31 ... Power supply limiting means, 32 ... Ignition device, 33 ... Main solenoid valve drive control circuit for stove, 34 ... Electronic device for ignition / extinction.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-5-87338 (JP, A) JP-A-58-88538 (JP, A) JP-A-60-78216 (JP, A) JP-A-1- 142323 (JP, A) JP-A-4-369315 (JP, A) Actually open 1-100221 (JP, U) Actually open 53-116830 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F23N 5/24 110

Claims (9)

(57) [Claims] 1. An ignition / extinguishing electronic device for igniting and extinguishing a gas burner, an additional electronic device for performing predetermined additional control or predetermined notification of combustion operation of the gas burner, and each of the electronic devices. In a gas combustion apparatus equipped with a battery that is a power source of equipment and a battery voltage monitoring unit that monitors whether the voltage of the battery is equal to or higher than a predetermined voltage, the voltage of the battery is monitored by the battery voltage monitoring unit. When it is determined that the voltage has dropped below the specified voltage , the gas
From the battery in order to enable running the combustion operation of the burner and enables the power supply to the ignition and extinguishing electronics and ignition-
A gas combustion apparatus comprising a power supply limiting means for prohibiting power supply to the additional electronic device other than the fire extinguishing electronic device. 2. An ignition / extinguishing electronic device for igniting and extinguishing a gas burner, an additional electronic device for performing predetermined additional control or predetermined notification of combustion operation of the gas burner, and each electronic device. In a gas combustion device equipped with a battery as an auxiliary power source at the time of a power failure of a commercial power source which is a power source of equipment, a combustion operation of the gas burner at the time of the power failure of the commercial power source.
Executable and to allow the power supply from the prior SL battery to the ignition and extinguishing electronics in order to, and comprises a feed limiting means for inhibiting the power supply to the ignition-extinguishing electronics than the additional electronic equipment A gas combustion device characterized in that 3. The ignition / extinguishing electronic device controls the opening and closing of an electromagnetic valve provided in a gas supply path to the gas burner so as to at least supply gas to the gas burner and shut off the gas. 3. A gas combustion apparatus according to claim 1, further comprising a solenoid valve drive control circuit for operating the gas combustion apparatus. 4. The gas combustion device according to claim 3, wherein the ignition / extinguishing electronic device includes an ignition device that electrically ignites the gas burner. 5. A main gas supply path connected to the gas burner, an auxiliary gas supply path branched from the main gas supply path and connected to the gas burner in parallel with the main gas supply path, and combustion of the gas burner. 5. A thermal power control solenoid valve for opening and closing the main gas passage to adjust the thermal power at times, and the additional electronic device includes at least the thermal power control solenoid valve. The gas combustion device according to any one of claims. 6. The thermal power control solenoid valve comprises a self-holding type solenoid valve that opens and closes by a temporary energization, and the power supply limiting means controls the thermal power control solenoid valve to open the thermal power control solenoid valve. The gas combustion apparatus according to claim 5, wherein after the solenoid valve for use is energized, the power supply to the solenoid valve for adjusting heat power is prohibited. 7. The solenoid valve for adjusting heat power is constituted by an energization holding type solenoid valve which is closed by continuous energization and opened by interruption of the energization. The gas combustion device described. 8. The gas combustion apparatus according to claim 1, wherein the additional electronic device includes at least a notification lamp or a notification buzzer for performing a predetermined notification. 9. The gas combustion apparatus includes the gas burner for a stove, a grill burner, and an electromagnetic solenoid valve for a grill provided in a gas supply path to the gas burner for supplying gas to the grill burner and shutting off the gas. 9. A gas stove provided with the gas combustion apparatus, wherein the power supply limiting means comprises means for prohibiting power supply from the battery to the electromagnetic solenoid valve for grilling. .