JPH0618026A - Gas-burning device - Google Patents

Abstract

PURPOSE:To enable stabilizing the combustion by controlling the amount of flammable gas supplied to the burner in accordance with a specified value so as to keep the degree of the combustion at the burner in a preset condition of combustion. CONSTITUTION:A flow-rate-controlling means 28 controls the amount of flammable gas supplied to a nozzle 31. A gas-pressure detective means detects the pressure of the flammable gas between the flow-rate-controlling means 28 and the nozzle 31. By means of a caloric force-setting means the degree of the combustion of flammable gas at a burner 1 is preset. A means of central control 36 is connected to the caloric force-setting means and to the gas-pressure detective means and, in order to keep the degree of the combustion at the burner 1 in a condition of combustion preset by the caloric force-setting means, controls the amount of flammable gas supplied to the burner 1 in accordance with a specified value by driving the flow-rate-controlling means 28 according to signals from the gas-pressure detective means. This method makes it easy to stabilize the combustion and notice malfunctioning of a temperature sensor independent of variation in the pressure of gas supplied.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion instrument that burns gas as a fuel, and mainly relates to universalization of a combustion control unit for various gases, stable combustion regardless of fluctuations in supply gas pressure, and pot bottom temperature. The present invention relates to safety of a gas combustion device that facilitates determination of a sensor failure.

[0002]

2. Description of the Related Art A gas cooker as an example of a conventional combustion device of this type is shown in FIGS. FIG. 25 shows a front perspective view of a conventional gas cooker, and FIG. 26 shows an operation panel 7
FIG. 27 shows a schematic view of the structure of the stove. Figure 25
As shown in Fig. 1, the conventional gas cooker is composed of a stove burner 1, a temperature sensor 2, a stove 3, an ignition / extinguishing button 4, a heat power adjusting lever 5, a grill section 6, and an operation panel 7.
The operation panel 7 shown in FIG. 26 includes a display tube 8 for displaying time / temperature, an LED 9 for displaying various cooking modes, a key 10 for setting various cooking modes, and the like. For example, when setting the tempura cooking, the “tempura key” 10 is pressed, and the target temperature is set while watching the numerical value displayed on the display tube 8 with the “sag and rise keys” 11. FIG. 27 is a diagram showing a schematic structure of the stove. When the ignition / extinguishing button 4 is pushed in, the ignition switch 18 is turned on, and the solenoid valve 12 and the temperature control valve 14 are energized via the control board 19 to be in the open state. Becomes The gas is supplied to the burner 1 through the main solenoid valve 12, the manual valve 13, the temperature control valve 14 and the bypass key 15 from the thermal power control needle 16 to the maximum flow rate of the main nozzle 17. At the same time, the igniter 20 is turned on via the control board 19, the ignition plug 21 is discharged, the burner 1 starts combustion, the thermocouple 22 receives heat from the burner 1, transmits thermoelectromotive force to the control board, and continues combustion. Becomes

When the heat power is adjusted in this state, the combustion amount is adjusted by operating the heat power adjusting lever 5 and moving the heat power adjusting needle 16, or the power of the temperature adjusting valve 14 is turned on and off during automatic temperature control. By letting
The combustion amount is selected to be regulated by the bypass key 15 or the main nozzle 17.

Further, at the time of gas type conversion such as moving to another house, the bypass key 15, the needle nozzle 16 for adjusting the thermal power, the main nozzle 17, and the governor adjustment for the grill (not shown),
The damper 23 for taking in the primary air, etc. needed to be replaced and adjusted.

[0005]

However, the configuration as in the above-mentioned conventional example has the following problems.

(1) In the conventional thermal power control method, the thermal power is adjusted by adjusting the thermal power of the thermal power control needle 16 or by switching the strength of the solenoid valve. It was not possible to control the amount to a constant level. Therefore, the allowable range of supply gas pressure is very wide,
For example, in the case of 13A gas type, the minimum gas pressure is 100mmH _2.
O, central gas pressure 200 mmH ₂ O, maximum gas pressure 250 mmH ₂
It is standardized as O, and it is necessary to secure the thermoelectromotive force of the thermocouple in order to prevent misfire even when the throttle of the thermal power is 100 mmH ₂ O, and the thermal power throttle that always considers the safety factor of 40% cannot be fully throttled. The result was to provide. In addition, during automatic temperature control, the temperature control valve causes a strong flame and a low flame combustion, which causes a sudden flame change and makes the user feel uneasy.At the same time, when controlling the thermal power due to the difference in the strong and weak combustion times, the valve is activated. The sound was so frequent that it was offensive to the ears.

(2) When a pressure sensor is used, if the pressure sensor fails and a gas leak occurs, raw gas may be released into the device and cause a device fire, but there is no means for preventing this.

(3) Further, when foreign matter adheres to the mechanical portion of the flow rate control means, it may not be possible to reduce the combustion amount to a small amount due to an abnormal gap in the throttle mechanism.

(4) Since the conventional equipment has no detection function for abnormal supply gas pressure (insufficient LPG cylinder, broken rubber tube, insufficient opening of the gas main plug, etc.),
For example, a single stove can be used, but if two stoves are used, the fire power is weak, and although it is a simple event such as ignition, but it disappears immediately, the user cannot easily find it and a service call often occurs.

(5) Further, in the case of adjusting the pressure while detecting the pressure with the gas pressure sensor, the rough adjustment and the fine adjustment are performed by the correlation between the adjusting accuracy and the ability of the throttle mechanism and the gas pressure detecting ability. If the time for adjusting the heat power is not shortened, it is necessary to consider that the food will boil and spill over.

(6) Further, in the conventional gas appliance,
Since the supply gas pressure fluctuates greatly and the standard gas pressure and the maximum gas pressure change by about 40% depending on the type of gas, there is a risk of burns due to abnormal temperature rise of the body and abnormal combustion due to abnormal gas pressure. .

(7) In the conventional two-necked gas stove, generally, a small burner with a combustion amount of about 2000 Kcal / h and 400
A large burner of about 0 Kcal / h is installed. The minimum combustion amount of these burners is 400 Kcal / h and 500 K, respectively.
If you squeeze it more than about cal / h, no flame will be formed and it will extinguish. Therefore, the heat power adjusting needles are divided into small and large ones. Therefore, at the time of gas type conversion,
Since it is necessary to disassemble the interior of the gas cock and replace parts,
Performing unfamiliar work may cause gas leaks. In addition, a defect occurs due to a mistake in replacement.

(8) Further, the above-mentioned minimum combustion amount is not constant because the combustion speed differs depending on the gas species and the calorific value differs. Therefore, a needle that determines the minimum combustion amount for each type of gas type burner is required, and many gas conversion parts,
Need assembly parts. Therefore, when exchanging gas species, it is necessary to remove the gas mechanical block, skill is required from the viewpoint of preventing gas leakage accidents, more time is required, and gas species conversion costs are high. there were.

(9) When measuring the combustion amount with a pressure sensor, which has never been used before, when using it as an industrial measuring instrument,
It is possible to make a zero point adjustment at the beginning of use, but in the case of a gas stove, it is dangerous for the user to ask the user to make an adjustment because the person who is the symmetric person may be an old person or a child, and if the setting is incorrect, it may cause poor combustion. It cannot be adjusted.

(10) When a pressure sensor, which has not been found in conventional instruments, deteriorates in performance due to aging and the regular performance cannot be obtained, the instrument may suddenly become unusable.

(11) If the performance of the pressure sensor, which was not present in the conventional equipment, deteriorates and the performance of the equipment cannot be guaranteed if it is used as it is, the heat power cannot be adjusted and it becomes more difficult to use than the conventional equipment.

(12) When one of the plurality of stove burners fails and becomes inoperable, it is preferable to provide a safety device for each burner to shut off the gas. A large number of burners are required in proportion to the number of burners, and the production cost is high.

(13) When simultaneously adjusting the heat power of a plurality of stove burners using a pressure sensor, which has not been found in conventional appliances, depending on the relationship between the processing speed of the microcomputer (central control means) and the flow rate control means 100, At the same time, the heat regulation cannot be processed. If the heat power is adjusted individually, it takes time, and for example, if the power throttle is required in the state where the later stove is boiling, it will be spilled.

(14) When the performance of the pressure sensor is to be confirmed with a device using a pressure sensor which has not been found in conventional devices, for example, a special confirmation tool is required at the time of manufacture.
It takes extra man-hours to attach and remove tools, and it is a general household appliance at the time of servicing, and it takes time for the treatment without the service person always carrying the tool around.

(15) Conventionally, since there was no instrument using a pressure sensor, a needle corresponding to each gas type was used. The present invention requires a universal flow rate control means capable of adjusting the thermal power from low-Wobbe city gas to LPG, which has never been seen before.

(16) In the configuration of the universal flow rate control means described above, the LPG minimum flow rate adjustment guarantee, which has the highest heat generation amount, has a very small gas passage area. It becomes unstable and unstable.

(17) In the structure of the universal flow rate control means, it is necessary to take measures to prevent the mechanism from being destroyed if dust or the like adheres to the adjusting mechanism or if it is not reduced to a predetermined heating power.

(18) Since the structure is more expensive than the conventional gas stove, it is necessary to take measures such as sharing functions.

(19) Further, it is necessary to take measures against the problem that gas leakage does not occur in the closing means due to being shared.

(20) Since the universal flow rate control means is easy to use and does not cause any inconvenience, it is necessary that the heat power can be adjusted quickly and accurately.

(21) The conventional appliances have few gas stoves that require a power source, and most of the appliances can be used even during a power failure. If it is not a tool that can be used even in the event of a power outage, purchasing will decline.

(22) The defect determination means of the temperature sensor used in the conventional gas stove has a problem that the sensor defect may not be found depending on the content of the sensor defect.

[0028]

In order to solve the above problems, the first means of the present invention is a burner for burning a combustible gas, a nozzle for supplying the combustible gas to the burner, and a nozzle for supplying the combustible gas. Flow rate control means for controlling the supply amount of the combustible gas, gas pressure detection means for detecting the pressure of the combustible gas between the flow rate control means and the nozzle, and thermal power setting means for setting the combustion amount of the combustible gas in the burner. And a central control means connected to the thermal power setting means and the gas pressure detection means, and the central control means controls the burner so that the combustion amount of the burner is in the combustion state set by the thermal power setting means. The flow rate control means is driven by the signal of the gas pressure detection means to control the supply amount of the combustible gas to the predetermined value.

As a second means, the gas flowing into the pressure sensing portion of the gas pressure sensing means flows into the flow path communicating between the flow rate controlling means and the nozzle via the flow rate regulating portion. To do.

As a means of the younger brother 3, the flow rate control means is composed of a throttle means for varying the flow rate of the combustible gas supplied to the nozzle and a drive means for driving the throttle means. When the detected gas pressure of the gas pressure detection means in the state does not reach the predetermined position corresponding to the value set by the thermal power setting means, the opening and closing operation of the throttle means by the drive means by the central control means is set to a preset closing. It is configured to stop at the limit position.

As a fourth means, a gas type switching means for switching and setting a used gas type is further provided, and a position detecting means for determining that the throttle position of the throttle means of the flow rate control means is the maximum area is provided. When the gas pressure detected by the gas pressure detecting means is lower than the predetermined gas pressure, the central control means causes at least one of warning and stopping the supply of the combustible gas to the burner. It is configured to perform.

As a fifth means, the central control means is further provided with a drive speed determining means for controlling the drive speed of the drive means, and the gas pressure corresponding to the predetermined heat power set by the heat power setting means and the gas pressure detection. The driving speed of the driving means is controlled according to the degree of difference in gas pressure detected by the means.

As a sixth means, a gas type switching means for switching and setting the used gas type is further provided, and when the maximum heat power is set by the heat power setting means, the gas pressure detected by the gas pressure detecting means is the gas When the gas pressure is higher than the maximum gas pressure of the gas type set by the species switching means, the central control means drives the flow rate control means to set the gas pressure detected by the gas pressure detection means to the gas pressure detected by the gas pressure detection means. The pressure is adjusted to the maximum gas pressure used.

As a seventh means, a burner calorie switching means for setting a maximum combustion amount according to the combustion capacity of each burner is provided, and a minimum burner calorie corresponding to the maximum combustion amount of each burner set by the burner calorie switching means is provided. The central control means is used to correct the gas pressure value corresponding to the amount of combustion.

As the eighth means, a gas species switching means for switching the used gas species is further provided, and the central control means judges the used gas species set by the gas species switching means, and determines the used gas species. The minimum setting gas pressure corresponding to the minimum heating power of the corresponding heating power setting means is predetermined.

As a ninth means, the flow control means is provided with a closing means for opening and closing the gas passage in addition to the throttle means and the driving means, and the central control means is in a closed state of the closing means. When the gas pressure value (atmospheric pressure value) applied to the gas pressure detecting means at the time is within a predetermined value, a storage means for storing the gas pressure value and a reference value with the value stored in the storage means as the atmospheric pressure value The gas pressure determination correction means for performing the change correction of the above is provided.

As a tenth means, the flow control means is provided with a closing means for opening and closing the gas passage in addition to the throttle means and the driving means, and the central control means has the closing means in a closed state. When the gas pressure value (atmospheric pressure value) applied to the gas pressure detection means at the time is within a predetermined value, a storage means for storing the gas pressure value is provided, and the gas pressure detection means when the closing means is in the closed state. When the gas pressure value (atmospheric pressure value) applied to the air conditioner exceeds a predetermined value, a notification is given.

As an eleventh means, the flow rate control means is provided with a closing means for opening and closing the gas passage in addition to the throttle means and the driving means, and the central control means has the closing means in a closed state. When the gas pressure value (atmospheric pressure value) applied to the gas pressure detection means at the time is within a predetermined value, a storage means for storing the gas pressure value is provided, and the gas pressure detection means when the closing means is in the closed state. When the gas pressure value (atmospheric pressure value) applied to the engine exceeds a predetermined value, the combustion is stopped.

As a twelfth means, in a combustion device using a plurality of combustion devices, gas is supplied to the combustion devices from one gas cutoff valve.

As a thirteenth means, the flow control means is a throttle means for varying the flow rate of the combustible gas supplied to the nozzle, a driving means for driving the throttle means, and the flow control means, Position detecting means for detecting the limit of the movable range of the throttle means and the current position within the movable range, and further closing means for opening and closing the gas passage are provided, and the driving means drives the throttle means and the gas closing means. The driving means and the closing portion of the closing means are separated from each other when the closing means is closed.

As a fourteenth means, in a device using a plurality of combustion devices, the flow rate control means of each of the combustion devices has a throttle means for varying the flow rate of the combustible gas supplied to the nozzle, and the throttle means. A drive means for driving the means, a position detection means for detecting the limit of the movable range of the throttle means and the current position within the movable range, and a closing means for opening and closing the gas passage are provided, which further correspond to the individual combustion devices. The central control means is provided with a drive speed determination means for controlling the drive speed of the drive means of the flow rate control control means, and a total drive determination means for controlling the overall drive control of the plurality of independent flow rate control means, The total drive determination means is configured so that the difference between the gas pressure corresponding to the set thermal power of the thermal power setting means and the gas pressure obtained by the gas pressure detection means is equal to or less than a predetermined value. If combustion operation is duplicated, and configured to operate by a predetermined priority.

As a fifteenth means, a display means for displaying the setting state of combustion and the like, and an instrument state display judging means for displaying the performance state of the instrument by a specific key input operation are provided in the central control means, and the instrument state is provided. The display determination means is configured such that the gas pressure of the gas pressure detection means can be displayed on the display means.

As a sixteenth means, in the combustion apparatus of the gas combustion appliance, the throttle mechanism of the throttle means for adjusting the heat power is
The flow rate adjustment of the low calorific value gas and the flow rate adjustment of the high calorific value gas are controlled by a single driving means.

As a seventeenth means, the throttling mechanism of the throttling means has a constitution in which a minimum flow rate regulating hole for LPG is provided independently of the throttling mechanism.

As the eighteenth means, drive means for driving the diaphragm means and position detection means for detecting the limit of the movable range of the diaphragm means and the current position within the movable range are provided.
In the diaphragm means, a buffer device is provided in the diaphragm mechanism at the limit point of the drivable range in the minimum diaphragm direction.

As a nineteenth means, a position detecting means for detecting the limit of the movable range of the diaphragm means and the current position within the movable range and a closing means for opening and closing the gas passage are provided, and the driving means is the diaphragm means. The structure is also used as the closing means.

As a twentieth means, a burner for burning the combustible gas, a nozzle for supplying the combustible gas to the burner, a flow rate control means for controlling the supply amount of the combustible gas supplied to the nozzle portion, and the burner in the burner are provided. A thermal power setting means for setting the combustion amount of the combustible gas, a slide type throttle means for varying the flow rate of the combustible gas supplied to the nozzle, and a drive means for driving the throttle means in the flow rate control means. The position determination means for detecting the limit of the movable range of the aperture means and the current position within the movable range is provided, and the position determination is performed so that the aperture position of the aperture means corresponds to the thermal power set by the thermal power setting means. A central control means for driving the flow rate control means by a signal of the means to control it to a predetermined position is provided, and the central control means is further provided with the present range within the possible range of the throttle means. Drive speed determination for controlling the drive speed of the drive means in order to speed up or slow down the speed of the drive means depending on the length of the drive distance of the new change position of the aperture means when the heat power is changed from the set position by the heat setting means. It is configured to have means.

As a twenty-first means, in the combustion control of the gas burning appliance, a thermal power setting means for setting the thermal power, a flow rate control means for controlling the thermal power, and an appliance state display determining means for determining the performance state of the appliance, A temperature sensor during cooking, a display unit for displaying various states such as temperature and cooking time, a backup power supply for supplying power at the time of a power failure, and a power failure determination unit are provided, and the power failure determination unit is at least for reducing power consumption at the time of power failure. The display of the display means is limited or stopped.

As a 22nd means, a temperature detecting means for detecting the bottom temperature of the pot, a burner for burning the combustible gas, a nozzle for supplying the combustible gas to the burner, and a supply amount of the combustible gas for supplying to the nozzle portion are provided. Flow control means for controlling,
Thermal power setting means for setting the combustion amount of the combustible gas in the burner, and further the flow rate control means, throttle means for controlling the supply amount of the combustible gas to be supplied to the nozzle,
Drive means for driving the diaphragm means, position detection means for detecting the limit of the movable range of the diaphragm means and the current position within the movable range are provided, and the diaphragm means corresponding to the thermal power set by the thermal power setting means is provided. Central control means is provided for driving the flow rate control means by a signal from the position determination means so as to reach the throttle position and controlling the flow rate control means to a predetermined position. Further, the central control means is provided with a predetermined value based on the temperature obtained from the temperature detection means. Equilibrium temperature determination means is provided for determining whether an equilibrium temperature condition occurs with a temperature rise gradient within a temperature range, and the equilibrium temperature determination means determines that there is an equilibrium temperature, and the position determination means determines. If the position is at the maximum thermal power position, the pan bottom temperature sensor is determined to be defective and combustion of the equipment is stopped.

As a twenty-third means, a temperature detecting means for detecting the pot bottom temperature, a burner for burning the combustible gas, a nozzle for supplying the combustible gas to the burner, and a supply amount of the combustible gas for supplying to the nozzle portion are provided. Flow control means for controlling,
The gas pressure detecting means for detecting the pressure of the combustible gas between the flow rate control means and the nozzle, the thermal power setting means for setting the combustion amount of the combustible gas in the burner, the thermal power setting means and the gas pressure detecting means. The flow rate control means is driven by the signal of the gas pressure detection means to supply the combustible gas to the burner so that the combustion amount in the connected burner is set to the combustion state set by the thermal power setting means, and a predetermined gas is supplied. Central control means for controlling the pressure value is provided, and further, the central control means determines whether an equilibrium temperature condition occurs in which a temperature rise gradient is equal to or more than a specified value within a predetermined temperature range from the temperature obtained from the temperature detection means. Equilibrium temperature determination means for determining is provided, and when the equilibrium temperature determination means determines that there is an equilibrium temperature and the secondary gas pressure is equal to or higher than a predetermined gas pressure, the pan bottom temperature sensor is disabled. And configured to stop the burning of the determined instrument with.

[0051]

The present invention has the following functions due to the above-mentioned constitution.

(1) The gas pressure determining means detects the pressure and the flow rate controlling means regulates the pressure so that the set gas pressure set by the thermal power setting means is always maintained.

(2) By adding a flow rate regulating device to the gas inflow portion of the pressure detecting portion, the amount of gas leakage when the pressure detecting portion is damaged is regulated. In addition, if there is a minute gas leak, the measured value is indicated as a low gas pressure abnormality.

(3) Even if the set gas pressure is not reached, the drive means is stopped at the movable limit point of the position determination means.

(4) If the secondary gas pressure is less than or equal to the predetermined gas pressure at the maximum thermal power position of the thermal power control device, a warning is given or combustion of the equipment is stopped.

(5) By varying the drive speed of the flow rate control means by the drive speed determination means, for example, when switching from high heat to low heat, the speed is increased to just before low heat, and when finely adjusting to the set gas pressure, the speed is decreased. .

(6) When the maximum heating power is set, the maximum working gas pressure is regulated to the maximum working gas pressure determined by the limit gas pressure determining means.

(7) Burner calorie setting means and weak calorie correction means are used to switch the burner combustion amount, for example, the set gas pressure value corresponding to the burner capacity when the positions of the large calorie burner and the middle calorie burner are exchanged. Can be changed without changing the diaphragm mechanism.

(8) By setting the minimum set gas pressure for each gas type in the gas type setting means, the optimum minimum gas pressure can be finely set for different flammability depending on the gas type.

(9) By providing the gas pressure determination / correction means, it is possible to correct the atmospheric temperature and the measurement error due to the secular change of the measurement error, and constantly calibrate the reference point when there is no gas pressure.

(10) Due to the provision of the gas pressure determination and correction means, notification is given when there are many measurement errors due to atmospheric temperature and measurement error aging.

(11) Since the gas pressure determination and correction means is provided, combustion is not performed when there are many measurement errors due to atmospheric temperature and measurement error aging.

(12) Since the plurality of combustion devices have a single gas shutoff function, the shutoff valve consumes less power.

(13) The driving means also serves as the driving means of the gas closing means, and when the closing means is closed, the driving means and the closing part are separated from each other.

(14) Set gas pressure of the heating power setting means and 2
When a plurality of combustion sections overlap in a state where the difference from the next gas pressure is a certain value or less, the other is kept in the primary drive stopped state until one pressure adjusting process is completed preferentially.

(15) An instrument status display determining means is provided, and the secondary gas pressure is displayed on the display means by a specific key input operation.

(16) From the gas having a low calorific value to the gas having a high calorific value, the movable pressure control range of the throttle mechanism for controlling the thermal power can be secured for each gas.

(17) The throttle mechanism of the flow control means is an LP
The minimum flow rate restriction hole for G is provided independently of the throttle mechanism to ensure the minimum flow rate even when the throttle mechanism is fully closed.

(18) In the flow rate control means, a shock absorber is provided in the throttling mechanism at the limit point of the drivable range in the minimum throttling direction, and when the throttling is completed, an impact force is applied to the throttling mechanism and the driving device. relieve.

(19) The driving means is also used as the driving means for the gas closing means, and the single driving means serves as the diaphragm mechanism.
Drive the closing mechanism.

(20) By changing the drive speed of the flow rate control means by the drive speed determination means, for example, when switching from high heat to low heat, the speed is increased to just before low heat, and when finely adjusting to the set position, the speed is decreased. .

(21) The power failure determining means limits or stops the display of the display means at least in order to reduce power consumption at the time of power failure, and the power saving operation is performed.

(22) The position determining means and the equilibrium temperature determining means determine that the resistance change characteristic of the pan bottom temperature sensor is defective and stop the combustion.

(23) The gas pressure determination means and the equilibrium temperature determination means determine that the resistance change characteristic of the pan bottom temperature sensor is defective and stop the combustion.

[0075]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings based on the case of using it in a gas cooker. The parts having the same functions as the conventional ones are designated by the same reference numerals and the description thereof will be omitted.

1 to 7, FIG. 1 is a front perspective view of a gas cooker of an embodiment of a combustion apparatus of the present invention, and FIG. 2 is a gas control path of the combustion apparatus and a microcomputer (center). 3 is a diagram showing a schematic configuration of an electronic circuit 25 including a control means) 36. FIG. 3 is an enlarged view of the operation panel 7, and FIGS. 4 to 8 are views showing operation diagrams of the flow rate control means 28. FIG. 4 is a stopped state, FIG. 5 is a maximum thermal power state, FIG. 6 is a minimum throttle position, and FIG. Shows the maximum stroke position, and FIG. 8 shows a partially enlarged view of the throttle mechanism 79 of the flow rate control means 28.

FIG. 1 shows that the ignition / fire extinguishing button 4 and the heat power adjusting lever 5 are omitted from the conventional example, and there is no mechanical operation, and all keys are input through the operation panel 7.

FIG. 2 is a block diagram of a stove block composed of a plurality of stoves and is roughly classified into a heating section and a gas control block 24, an electronic circuit 25, a DC backup power supply 35a, and an operation panel 7. ing. In the heating and gas control block 24, the gas is in the gas conduit 2
Through the six-way shutoff valve 27, the gas flows through the individual flow rate control means 28, the gas pipe 29, the nozzle receiver 30, and the nozzle 31 that regulates the maximum gas flow rate to reach the burner 1. A temperature sensor 2, a thermocouple 32, and an ignition plug 33 are attached to the burner 1. And each of the shutoff valve lead wire 27a, the temperature sensor lead wire 2a, the thermocouple lead wire 32a, and the high-voltage lead wire 3
It is connected to the electronic circuit 25 at 3a. Electronic circuit 25
Is a power cord 34, a power circuit 35, a microcomputer 36, an operation / display / I / O circuit 37, an alarm sound drive circuit 38, an operation lamp drive circuit 39, a calorie changeover switch 40, a gas type changeover switch 41, a continuous discharge igniter. Four
2. Composed of a source shutoff valve drive circuit 43 and a combustion control block corresponding to each burner.
Is composed of a temperature sensor A / D conversion circuit 45, a motor drive circuit 46, a switch buffer circuit 47, a thermocouple electromotive force determination circuit 48, and a pressure sensor conversion circuit 49, and corresponds to each burner when there are three burners. The combustion control block B50, the combustion control block C51, and the like.

FIG. 3 is an enlarged view of the operation panel 7. The display tube 8 displays time and temperature. The time setting section 52 for keying in the cooking time is composed of a time setting hour key 53 and a minute key 54. The operation instruction section 55 on the left stove includes a plurality of LEDs 56 for notifying the thermal power state during combustion, and ignition /
Fire extinguishing key 57 and U for setting the heat power as heat power setting means
P key 58, DWN key 59, grill operation instruction section 6
It is composed of 0 and. The right stove operation instruction section 61 is
In addition to the same function as the left stove operation instruction section 55, an automatic cooking appliance operation instruction section 62 is added. The function of the temperature sensor 2 and the electronic circuit 25 is, for example, a boiling water mode 63 in which the fire is automatically extinguished after boiling, and the amount and content of boiling cooking are automatically estimated to automatically set the heating power suitable for the cooking content after boiling in advance. It consists of a stew mode 64 that has a function of automatically extinguishing when the set cooking time elapses, and a function of automatically extinguishing fire prior to the timer if it becomes likely to burn in time, and a tempura mode 65 used for tempura cooking. There is. For example, if you press the oil key 66, the tempura mode lamp 6
7 lights up. The target temperature is keyed in with the up key 68 and the down key 69, and is confirmed with the display tube 8.

FIG. 4 shows the flow rate control means 28, and the geared motor 70 and the geared motor lead wire 7 which constitute the drive means.
1. A relay joint 73 that also serves as a switch cam that converts rotational movement into reciprocating linear movement via the serration shaft 72 of the geared motor 70, a bearing 74 with a spiral slit, and a pin 75 at the tip to be inserted into the bearing 74. A shaft 76 for reciprocating linear motion, a switch A77, a switch B78, and a switch lead wire A77 that constitute position determining means.
a, a switch lead wire B78b, and the throttle mechanism portion 79 is opposed to the valve body 80, the needle 82 that constitutes the valve body and controls the flow rate, the spring A83 that biases the valve 81, and the needle 82 that regulates the flow rate. A needle receiver 84, a spring B85 for supporting the needle receiver 84, and a valve 81 for closing and opening gas, which is a closing means.

Further, in FIG. 4, the pressure sensor 86 constituting the gas pressure detecting means, the pressure sensor lead wire 86a, and the bypass nozzle 88 for regulating the flow rate flowing to the pressure sensor 86.
Is installed.

The cam shapes for the switch A77 and the switch B78 of the relay joint 73 which constitutes the position determining means are such that five stroke states described later can be identified.

In the above structure, by connecting a power source to the electronic circuit 25 of FIG. 2 and operating the ignition / fire extinguishing key 57 of the operation panel 7, power is sent from the original shutoff valve drive circuit 43 to turn on the original shutoff valve 27. It will be opened.

FIG. 4 is a cross-sectional view of the flow rate control means 28 in the combustion stopped state, showing the switch position 3 (switch A77on, switch B78on, stopped state), the shaft 76 has a gap t with the valve 81, Valve 81 is spring A83, spring B85
As a result of pressing the valve seat 87 by the combined spring force of 1, the gas is closed. From this state, the ignition / fire extinguishing key 57 is pressed, power is transmitted from the motor drive circuit 46, and the geared motor 70 is normally rotated, whereby the relay joint 7
3 is rotated so that the cam shape of the relay joint 73 changes to the switch position 2 (switch A77on, switch B78of
switch position 1 (switch A)
77off, switch Bon78, rotate until maximum heat position). As a result, the shaft 76 pushes up the valve 81 and moves to the switch position 1 (maximum thermal power position) shown in FIG. (For convenience, the switch will be described as a mechanical switch of a micro switch, but a rotary encoder or an optical switch, which is more expensive than a mechanical switch, is used as the second embodiment, but the operation is the same purpose. ).

In FIG. 5, the gas passes through the gap t1 between the needle receiver 84 and the needle 82 from the gas conduit 26 and the valve 81 and the valve seat 8
7 from the gap t2 of 7 through the bypass nozzle 88 to the pressure sensor 86, and at the same time, the gas pipe 29 nozzle receiver 30,
It reaches the flow rate regulation main nozzle 31 and the burner 1. At the same time, as shown in FIG. 2, the continuous discharge igniter 42 is activated to supply the spark plug 33 with the high voltage for a limited time determined by the microcomputer 36 through the high voltage lead wire 33a to generate a spark with the burner 1. Occur, start gas combustion, thermocouple 3
2 is heated by the combustion flame of the burner 1 and sustains combustion.
Further, the pressure sensor 86 is pressurized by the gas pressure and transmits the pressure change to the pressure sensor conversion circuit 49 through the sensor lead wire 86a, but the gap t between the valve 81 and the valve seat 87 is transmitted.
Since the switch positions 1 (maximum thermal power state) where 1 and 2 are sufficiently secured are set, the gas pressure is set to the maximum value.

FIG. 6 is a cross-sectional view of the flow rate control means 28 in a state in which the minimum set gas pressure is set by the DWN key 59. The gap t1 between the needle receiver 84 and the needle 82 is reduced to increase the flow rate resistance to increase the gas flow rate. It shows the squeezed state. This state means switch position 0 (switch A77off, switch B78off, thermal power adjustment state), and the gas pressure sensor 86 is pressurized and changes are detected in the sensor lead wire 8.
It is transmitted to the conversion circuit 49 via 6a, and the gap t1 between the needle receiver 84 and the needle 82 is adjusted by the gas pressure determination means 93 described later so as to reach the set gas pressure.

FIG. 7 is a cross-sectional view of the flow rate control unit 79 at the switch position 2 (maximum operating point). When the pressure sensor 86 cannot regulate the gas pressure to the minimum set gas pressure at the switch position 0 (fire power adjustment state), ( In order to adjust the gas pressure to a low level (for example, when a foreign object is caught in the needle portion), the needle 82 operates in a direction to reduce the gap between the needle receiver 84 and the minimum set gas even if the needle 82 is pressed against the needle receiver 84. Since the pressure cannot be regulated, the operation is not stopped, and the geared motor 70 is eventually destroyed. In order to prevent this state, a shock absorber is provided to secure a stroke t3 that maintains the pressed state even when the needle 82 is pressed against the needle receiver 84, and at the same time, the maximum operating point of the movable range is limited and the minimum set gas pressure is set. The purpose of stopping even if the pressure cannot be adjusted is to the switch position 2 (maximum operating point).

FIG. 8 is an enlarged cross-sectional view of the needle 82 and the needle receiver 84. As shown in the figure, the shape of the needle is not a single taper but is formed stepwise to control the flow rate by changing the area and changing the flow velocity resistance. And L
Flow restriction hole with minimum throttle of about 300 kcal / h of PG
A (¢ 0.2 to 0.4) is provided.

FIG. 9 is a diagram showing a basic outline of various judging means of the central control means 36 of the gas combustion apparatus.
9, gas type setting means 90, thermal power setting means 91, appliance state display determining means 92, gas pressure determining means 93, position determining means 94, equilibrium temperature determining means 95, abnormal temperature determining means 96,
Drive determination means 97, total drive determination means 98, display means 9
9, flow rate control means 100, heating means 101, gas pressure sensor 86, temperature detection means 102, gas pressure high cut means 103, supply gas pressure abnormality determination means 104, zero-order gas pressure correction determination means 105, and warning means 106. It shows that it is being done.

FIG. 10 shows the contents of the gas type setting means 90. Gas type switching means 107 capable of discriminating a plurality of settings (for example, 8 modes can be discriminated by a triple switch of ON and OFF). The gas type is selected by, and the selected content is discriminated by the gas type discriminating means 108. The determination is made by using a work table of a predetermined storage unit (for convenience, gas types in FIG.
It is described as the gas pressure work table 109. ), The maximum gas pressure 113, the minimum set gas pressure 114, and the abnormal supply gas pressure 115 from the gas type / gas pressure work table 109 are determined by the limit gas pressure determination means 112 for the gas type according to the set gas type 111. decide. For example, when the switch setting value 110 is switch A = off, switch B = off, and switch C = off, gas type 1
11 is LPG, maximum working gas pressure 113 is 300 mmH
₂ O, the minimum set gas pressure 114 Lee mmH ₂ O, abnormal feed gas pressure 115 is 200 mm ₂ O, and becomes.

The maximum usable gas pressure 113 is the gas pressure sensor 86 based on the standard gas pressure of each gas group specified by law.
The value of the error is taken into consideration, and the purpose of use will be described later. The minimum set gas pressure 114 is proportional to the minimum combustion amount of the burner 1, and Q = Ж × D ^ 2 × H / d Q = gas flow rate Ж = coefficient determined for each type of gas D ^ 2 = gas passage area H = gas pressure d = specific gravity determined for each type of gas Also, the minimum combustion capacity of the burner 1 changes depending on the unique characteristics of the burner and each gas group, and if the combustion amount is made too small, the combustion load is too small to extinguish the fire. Since problems such as backfire will occur in the above, the minimum set gas pressure for each gas group is set to 1 for each gas group from the experimental values so that problems do not occur.
14 is set. The abnormal supply gas pressure 115 is a value obtained by subtracting an error of the pressure sensor 86 or the like from the minimum gas pressure of each gas group defined by law. The purpose of use will be described later. Further, since the minimum calorie of each burner is determined by the weak calorie correction means 117, the maximum of each burner set by the burner calorie switching means 117 (in the present invention, it is assumed that the two modes are large and small) is set. It is determined 118 whether the calorie at the time of combustion is large or small, and when the determination is large, the minimum combustion amount is set high in comparison with the minimum combustion amount of the small burner to prevent extinction. Therefore, the minimum set gas pressure 114 is multiplied by the gas pressure correction coefficient α to set 119, and the minimum set gas pressure is set to high 12
0. Although the burner calorie switching means 117 is not shown in FIG. 10, it is necessary for the number of burners.

The above-described gas type setting means 90, gas type limit gas pressure determining means 112, and burner-specific minimum set gas pressure determining method are given as the first means, and the second means is the operation panel. There is also a method of using the various keys of No. 7 and writing the conditions of the used gas in the EPROM to make the matching with the new burner faster.

FIG. 11 shows an outline of the heat power setting means 91. In the heat power setting condition judging means 121, various keys of the operation panel 7 (for example, ignition / extinguishing key 57, UP key 58, DWN key 59). The input of the condition of the used thermal power is whether to ignite / extinguish 122 or whether to increase the thermal power by 1.
23, whether or not to perform DWN 124, the new usage heat power is determined 125 by comparing with the current usage state, and the lighting control 126 is performed on the number of the heat power display lamps 56 according to the set heat power (for example, when the heat power display lamp 56 is 5 In the case of step display, the lighting state of Table 1 is assumed),

[0094]

[Table 1]

Based on the new used heat power determination 125, the heat power-set gas pressure determination means 127 determines the set gas pressure according to the set heat power (an example is shown in Table 2).

[0096]

[Table 2]

The set gas pressure for each thermal power is calculated and ignited,
Information on extinction, set thermal power, and set gas pressure 128 is sent to the next stage. In the calculation of the set gas pressure in the above, the minimum set gas pressure 114 is used as a basis because the weaker the calorie, the more accurate the same calorie is required each time when cooking, and it is determined by the above coefficient. It is configured.

FIG. 12 shows the contents of the gas pressure determination means 93. In the gas pressure sensor 86, when the pressure receiving surface is pressurized by the gas pressure, pressure distortion occurs, but this pressure distortion is converted into an electric signal. . In order to obtain the pressure from the converted electric signal, the pressure converting means 130 calculates the secondary gas pressure based on the constant stored in the initial constant storage unit 129.

The 0:00 gas pressure correction value stored in the 0th-order gas pressure correction value storage unit 131 described later (the 0:00 gas pressure correction value is 0 at the beginning of use) is added to the calculated gas pressure. It is determined by the secondary gas pressure calculation processing means 132 as the secondary gas pressure. The absolute value of the gas pressure difference between the determined secondary gas pressure and the set gas pressure 128 determined by the thermal power setting means 91, and positive and negative signs are obtained by the thermal power setting-secondary gas pressure comparison means 133, and the gas It is determined whether the absolute value of the pressure difference is larger or smaller than a value obtained by multiplying the set gas pressure 128 by a coefficient γ (for example, 10%) 134.
A signal 135 for stopping 0 is sent to the next stage. In the case of a large value, the absolute value of the gas pressure difference corresponds to the set pressure 128 by a coefficient δ.
Judge whether it is larger or smaller than the value multiplied by (for example, 150%) 13
6 is small, a signal 137 for lowering the drive speed of the flow rate control means 100, a large signal 138 for increasing the drive speed of the flow rate control means 100, and the above-mentioned 2 for instructing the drive direction. By the judgment 139 of the + and-signs of the difference between the next gas pressure and the set pressure of the target thermal power (in the case of +, the normal rotation
In the case of 0 and −, it is assumed that the reverse rotation 141 is performed).

In addition to the above, the heating power setting means, for example, in the simmering mode 64 in which the temperature sensor 2 is used to automatically cook while detecting the temperature of the bottom of the pan containing the food to be cooked, the amount and content of the simmering cooking are set. It is automatically estimated and automatically set to the heating power that matches the cooking content after boiling, and it automatically extinguishes when the preset cooking time has elapsed, and when it becomes about to burn within the time, it automatically boils over the timer When automatically setting the heat power that matches the contents of the post-cooking, it is regarded as the heat power setting means.

FIG. 13 shows the contents of the position determining means 94. The switch A77 and the switch B78 are turned on and off.
The f signal is fetched into the present position discriminating means 142 via the buffer circuit 47, and the switch discriminating means work table 14 is shown for convenience in the present position discriminating means 142.
3, switch A77, switch B78 on, of
Converted to OCT display (decimal display 144) according to the f state, and switch position 3 "equipment stop state (switch A77, B
78 both on) ", switch position 2" transition state (switches A77 on, B78off, transition from appliance rest to maximum heating power) ", switch position 1" maximum heating power state (switch A77 off, switch B78 on) ", The switch position 0 "fire power adjustment state (switch A77 and switch B78 are both OFF)" and the switch position 2 "maximum operating point (switch A77on, B78off)" are identified. However, in the above, the state of switch position 2 is 2
Although it is used once, the switch position display of the previous state and the current state changes 2 only when moving from switch position 0 (fire power adjustment state) to switch position 2 (maximum operating point),
Others are configured to change every step, and the previous position storage unit 145 is provided in the position determination means 94 to enable discrimination, and at the same time, two step change is discriminated 146 and forward rotation drive stop 147 in case of two step change. , Is configured to perform treatment. (For the sake of convenience, the switch consists of two
The same means can be used to determine the position even if more than one is used).

FIG. 14 shows the contents of the drive determination means 97. When the setting of the heat power setting means 91 is extinguishing, 14
8. Find the difference between the fire extinguishing position (switch position 3) and the current position (for example, switch position 0) 149 until the fire extinguishing position (switch position 3 of the position determination means 94) is reached, and whether the obtained difference exceeds 1 It is determined 150 whether or not the above condition is satisfied, the drive speed is set to high speed 151, and if the above condition is not satisfied, the drive speed is set to low speed 152 and the rotation direction is set to reverse rotation 15
Make a decision of 3. When reaching the fire extinguishing position 14
9. Stop the driving and proceed to the 0th gas pressure correcting means 105.

When the movement instruction is not extinguished by the heating power setting means 91, the movement instruction is the heating power 5 (switch position 1,
(Maximum thermal power) 155 is determined, and when the condition is satisfied, until the current position is thermal power 5 (switch position 1) 156, thermal power 5
The difference between the absolute value of (switch position 1) and the current position (for example, switch position 3) is obtained (| 1-3 | = 2), it is determined whether or not the value exceeds 1, and it is driven if the above condition is satisfied. The speed is set to high speed 158, the driving speed is set to low speed 159 when the above conditions are not satisfied, and the difference between the thermal power 5 (switch position 1) and the current position (for example, switch position 3) is calculated 160
(1-3 = -2) When the value is equal to or greater than 1, reverse rotation 1
61, and if the condition is not satisfied, the normal rotation 162 is determined. 15 when reaching 5 (switch position 1)
6. The drive is stopped 163 and the process proceeds to the next stage.

If the movement instruction is not the heat power 155,
A determination 164 is made as to whether or not the movement instruction is thermal power 1 to 4, and when the condition is satisfied, a determination 165 is made as to whether or not the switch position is 0. If the switch position is 0, the drive condition is set based on the determination content of the gas pressure determination means 93. Set 166. Switch position is 0
If not 165, it is determined whether or not the previous switch position of the previous position storage unit 145 of the position determination means 94 is not 0. 1
67 and the switch position is not 0, the switch position is 0
When the condition is not satisfied, whether the switch position is 2 or not is determined 169, and when the condition is satisfied, the above-mentioned thermal power setting-secondary gas pressure comparison / determination means 133 has a positive symbol time 170.
When the set gas pressure value is lower than the secondary gas pressure, the thermal power setting-secondary gas pressure comparison and determination means 133 is used to drive 17
If the condition is not satisfied, the drive stop state is continued 172. Further, when the switch position is not 2, 169, the above-mentioned thermal power setting-secondary gas pressure comparison and determination means 133 is a positive symbol at time 1
73 (when the set gas pressure value is higher than the secondary gas pressure) is driven 174 depending on the thermal power setting-secondary gas pressure comparison and determination means 133, and when the condition is not satisfied, moves to the switch position 0 175.
It is configured to do.

FIG. 15 shows the contents of the supply gas pressure abnormality judging means 104, in which the switch position is 1 (maximum thermal power state).
When X minutes have elapsed since 176, it is determined 177 whether or not the abnormal supply gas pressure determined by the gas type determination means 90 for each gas type is less than or equal to 177, and when the condition is satisfied, the warning means 106 notifies the gas pressure abnormality. .

FIG. 16 shows the contents of the pressure sensor zero-order gas pressure correction judging means 105, which is obtained from the gas pressure judging means 93 179 after X minutes have elapsed since the switch position became 3 (fire extinguishing state). The absolute value of the next gas pressure is compared with the constant K1. 1
If it is 80 or less and K1 or less, no correction is made. If K1 or more, the absolute value of the secondary gas pressure is compared with a constant K2 181, and if it is K2 or more, the warning means 182 gives an alarm. 182a and the absolute value of the secondary gas pressure is constant K
In the case of 1 to K2, a 183 configuration is stored as a correction value in the 0th-order gas pressure correction storage unit 131 of the gas pressure determination means 93.

FIG. 17 shows the contents of the gas pressure high cut means 103. When the gas pressure high cut means 103 is higher than the maximum working gas pressure 113 in the maximum thermal power state (switch position 1) 184, the gas pressure high cut means 103 sets the switch position to 0. 185, the thermal power of the thermal power-set gas pressure determination means, the set gas pressure 128 is changed to 4 and the set gas pressure is changed to the maximum used gas pressure 113, and the gas pressure determination means 93 is passed through the thermal power setting means. It is configured to move to. Therefore, the switch position is 0, and the thermal power indicator lamp 56 is in the thermal power 5 state. The operation of the fork set thermal power is the thermal power 4 (switch position 0), but if the thermal power DWN key 59 is entered from the operation panel 7 here, the thermal power setting means 91 is used, so that it is in a normal state (the changed portion indicates the lamp display 4). The individual gas pressure is set to a minimum gas pressure of x4).

FIG. 18 shows the contents of the total drive determination means 98. Whether any one of the drive determination means 97 of the individual stoves is driven at a low speed at the switch position 0 (fire power adjustment state). A determination 187 is made, and when the condition is satisfied, it is determined 188 whether the other stove is also driven at a low speed at the switch position 0, and when the condition is satisfied, the driving means of the stove that has become the switch position 0 later is temporarily stopped 189. Store in stop memory 1
90. When there is no low speed drive stove 187, it is determined 191 whether there is the flow rate control means 100 that has been temporarily stopped, and when the condition is satisfied, the contents stored in the primary stop storage device are erased 1
92, re-drive 193.

FIG. 19 shows the contents of the instrument display state judging means 92. By operating a specific key a plurality of times in succession, the 194 test mode is judged.
5. In this state, the left burner 2 is displayed on the display section 8 of the display means 99.
The next gas pressure is displayed 196. From this state, if there is a key input of the corresponding burner 197, the secondary gas pressure of the corresponding burner is displayed 198. Further, the test mode is canceled by turning off the power supply or operating the specific key a plurality of times in succession to release it 200.

FIG. 20 shows the contents of the power failure judging means 89. The power failure judging circuit 201 in the power supply circuit 35 shown in FIG.
From the signal from, it is judged whether there is a power failure 202, and when there is a power failure, the backup power supply 35b is driven 203, power is supplied to the electronic circuit 25, and the display of the display means 99 is stopped.
04, the thermal power set by the thermal power setting means 91 is set to two types, strong and weak 205 (the detailed description is omitted, but the number of additions at the thermal power UP of the thermal power setting means 91 shown in FIG. 11 is increased from 1 to 5 and the thermal power DWN
Change the number of production reductions from 1 to 5) Go to the next stage. When the power is restored, the backup power source 202 is stopped 206, and the display unit / fire power setting unit is restored 207.

FIG. 21 shows the contents of the equilibrium temperature determination means 95. It is determined whether the current thermal power position is the thermal power 5 (maximum) 208 (or whether the current thermal power is equal to or higher than the set gas pressure of the thermal power 4). 208) The temperature detecting means 102 for determining whether the temperature of the temperature sensor 2 is 209 when the condition is satisfied, and whether or not X1 minutes have elapsed after the thermal power becomes 5 when the condition is satisfied.
It is determined whether or not the temperature is less than or equal to K1 ° C. 210, and when the temperature is less than or equal to K1 ° C., the difference 211 between the temperature X2 seconds before and the current temperature is less than or equal to T1 ° C.

FIG. 22 shows the contents of the abnormal temperature determination means 96. It is determined 213 whether the temperature of the temperature detection means 102 has exceeded a predetermined risk prediction temperature, and when the conditions are not met, the original thermal power is restored. 214, the memory of the set thermal power storage means is erased 215, and the process proceeds to the next stage. When the condition is satisfied, the thermal power is instructed to the minimum calorie 216, the original thermal power is stored in the set thermal power storage means 217, and the temperature detection means 102 It is configured to determine 218 whether or not the temperature has become higher than or equal to the dangerous temperature, instruct to extinguish a fire when conditions are satisfied 219, issue an alarm 220, and proceed to the next stage.

The above-mentioned configuration has the following effects. That is, since the original shutoff valve system is used as shown in FIG. 2, it is possible to reduce power consumption and cost as compared with providing a shutoff valve for each flow rate control means.
The original shutoff valve method can be freely selected, such as adsorption / holding type or holding type (adsorption can be held only by mechanical operation), and the gas can be shut off by the original shutoff valve even if a power failure occurs. There is.

As shown in FIG. 4, the gas control is driven by a gad motor, so when the power is used, the setting of the thermal power is changed, and when there is no change, it is not consumed. The cost is low, and the power supply circuit in the control circuit can be made inexpensive. At the same time, it is possible to reduce the fluctuation of the power consumption because it is possible to reduce the fluctuation of the power consumption by controlling one by one even with a large number of stoves. A very small number of circuit configurations are possible, which is effective in improving the overall reliability.

Similarly, as shown in FIG. 4, the flow rate control means of the flow rate control means is provided with a geared motor, a relay joint which also serves as a switch cam for converting rotational movement into reciprocating linear movement via a serration shaft of the geared motor, and a spiral slit. It is composed of a bearing, a shaft that performs a reciprocating linear motion with a pin at the tip to be inserted into the bearing, a switch A, and a switch B. Since a relay joint is used, special attention is required for parts accuracy and assembly accuracy. It has the effect of preventing malfunctions. Further, although the valve is pushed up by the shaft that performs the reciprocating linear motion to form a gas flow path, the switch A for stopping the gad motor in a state where there is a gap between the shaft and the valve in the stopped state of FIG. Since it is configured by B, there is an effect that it is securely closed and at the same time, high precision of parts is not required. Further, a switch cam is provided in the relay joint, and by combining with the switches A and B,
Stop, move, maximum thermal power, thermal power adjustable position, and maximum operating point position can be identified, so even if the power is restored, it is possible to immediately restore to the stopped position, and at the maximum thermal power, set to the minimum flow loss position, It informs the drive determination means that it is within the range of adjustable heat power, and even if the needle is pressed against the needle receiver due to the stop position deviation due to the shock absorber at the maximum operating point,
Since the gad motor can be stopped without being overloaded, it has the effect of preventing equipment failure.

Further, in the state of FIG. 5, the closed portion has a gap of t1 and the distance between the needle and the needle receiver is wide. Even if a failure of the gas pressure sensor occurs in this state, the maximum flow rate is regulated by the main nozzle, and it has the effect of not causing abnormal combustion.

Although gas flows in the state of FIG. 5, the gas pressure sensor causes pressure distortion due to gas pressure, but there is a bypass nozzle for regulating the flow rate in front of the gas pressure sensor. In this bypass nozzle, even if the gas pressure sensor is damaged, even if there is a slight gas leak, the flow rate regulated by the bypass nozzle causes the sensor pressure to drop extremely, making it easy to detect as a gas pressure abnormality at the same time. Even if the gas pressure sensor is damaged and a large amount of gas flows out, there is an effect that it is limited to a very small amount of gas leakage regulated by the bypass nozzle and is not dangerous.

As shown in FIG. 8, the shape of the needle portion is not a single taper but a plurality of cylindrical or conical steps, and flow rate control is adjusted by a combination of area change and flow velocity resistance change. In other words, the composition is divided into the low Wobbe gas adjustment zone and the high Wobbe gas zone adjustment, but this means that when the minimum thermal power is assumed to be 400 Kcal / h, for example, the gas flow rate at the minimum thermal power corresponding to the domestic gas type Is different depending on the amount of heat generated by each gas type, and the setting of the supply gas pressure also differs depending on the gas type.Therefore, when a needle with a single taper shape is used, the trajectory of the needle stroke and gas pressure state is adjusted in the case of propane gas, etc. Since the minimum operating gas pressure and the maximum operating gas pressure coexist in the movable range where the pressure stroke range is extremely small, the pressure regulation value cannot be determined due to the correlation between the mechanical accuracy of the drive unit and the calculation processing speed of the gas pressure detection means. Occurs. In order to solve these problems, a certain pressure adjustment stroke range is secured for any gas type, and the minimum calorie restriction of LPG, which has the maximum heat generation amount per unit volume, is specially the minimum flow restriction hole in the needle receiver. With the provision of, it is possible to manufacture the needle part with rough precision, pressure adjustment can be easily performed, and mass production effect can be expected.

FIG. 10 shows a gas type setting means. Conventionally, when the gas type is switched, the gas pressure of the needle for controlling the minimum flow rate, the bypass key, and the governor is changed.
There are factors such as erroneous insertion of parts and defective gas seals, and at the same time, many parts need to be replaced, so replacement costs were high. Further, since the value of the minimum thermal power also changes depending on the value of the maximum thermal power, a flow rate control means corresponding to the value is required. For example, in the case of a two-mouth stove, when combined with a gas type, 16 types of flow rate control means were required. In the present invention, since the gas type and the calorie setting are switched, it can be shared by one flow rate control means, and since it is not necessary to touch the flow rate control means, the conventional problems can be solved.

In FIG. 11, ignition / extinction and heat power can be adjusted by key operation. The heat power is set based on the minimum calorie value. Microcomputer (central control means) because each heating power can be set only by calling calories
It requires less ROM capacity, and has a small number of set firepower for daily use, making it the most effective choice.

FIG. 12 shows the gas pressure judging means.
Since the gas pressure that correlates with the flow rate of the main nozzle is measured, it is possible to control the thermal power. Therefore, in the past, in order to secure the thermoelectromotive force of the thermocouple for sustaining combustion even with the lowest supply gas pressure, at the supply standard gas pressure, it was necessary to set the calorie value as high as 40% in 13A. It was In the present invention, the gas pressure near the main nozzle (secondary pressure)
The minimum calorie is 4
Even if the pressure is up to 00 Kcal / h, the minimum set gas pressure can be controlled to be constant according to the present invention, so 400 × 0.6.
= 240Kcal / h has been theoretically narrowed down. Also, since the middle calorie is set based on the gas pressure of the minimum calorie, even if the supply gas pressure fluctuates somewhat,
Since the heating power that is close to the set heating power can be obtained at any time, the reproducibility of the cooking time can be secured, the reliability of the cooking timer is improved, and it is extremely easy to use for egg dishes etc. that require minute calorie control depending on the food. Can be improved. The thermal power is adjusted by adjusting the secondary pressure to the gas pressure of the set thermal power. Therefore, depending on the difference between the target pressure value and the secondary pressure, the pressure adjustment is completed within a certain range, and the pressure is adjusted. When the difference is small, the driving speed of the flow rate control means 100 is changed depending on the size of the difference, and when the difference is small, the driving speed is accurately adjusted to the target heating power at a low speed. When the number is large, the driving speed is made high so that the target heating power can be quickly approached. Therefore, it has a feature that it can respond quickly when urgently squeezing the fire power such as spillage, and can adjust the target calorie accurately by slowing down the speed during fine pressure adjustment.

13 and 14 show the position determination means and the flow rate control means 100, the control state is determined by the positions of two switches, and the transition to each state is changed by one step as the change of the bit state of the switch. By setting the state and confirming the transition of each step, switch failure is confirmed and safety is secured. At the same time, it has the purpose of changing the speed of the flow rate control means 100 according to the difference between the transition target position and the current position to reach the position quickly and accurately, and has the role of determining the traveling direction of the drive device by the sign of the difference. ing. Further, even when the secondary gas pressure does not reach the target pressure adjustment at the time of the minimum throttle, it has a role of forcibly stopping and preventing the destruction of the mechanism. It also has the role of clarifying the position by checking the gas pressure sensor when the switch position is in the stopped state and checking the supply gas pressure for abnormalities when the thermal power is at the maximum value.

FIG. 15 shows the abnormal supply gas pressure determination means for checking the supply gas pressure supplied to the device and notifying when the supply gas pressure is below the legal gas pressure. Generally, it is unlikely that the supply gas pressure will be lower than the legal gas pressure, and in most cases it is due to the half-opened state of the instrument main plug in the room, twisting of the rubber pipe, breakage, etc. Depending on the burning equipment, incomplete combustion may result in gas poisoning, or the equipment may not be fully used. The present invention has an effect of issuing an alarm to notify and cancel the alarm when these events occur.

FIG. 16 shows a correcting means for the secondary gas pressure measurement including a gas pressure sensor. However, since the gas pressure sensor part in the stopped state is open to the atmosphere via the main nozzle, it is in the stopped state. By measuring the secondary gas pressure, discriminating the error when the gas pressure is 0, and compensating when the difference from the reference value is within a certain range and compensating, the manufacturing error of the gas pressure sensor can be absorbed and incorporated at low cost. In addition, error due to aging change can be minimized, accuracy can be maintained, and if there is a large difference from the reference value, an alarm is issued to prompt the need for inspection, and the difference from the reference value In the event of an extreme occurrence, it has a self-check function to stop the equipment for safety, and it has the effect that it can be used safely and safely with high accuracy.

FIG. 17 shows a means for high-cutting a high gas pressure. Conventionally, a governor has been used, and it is necessary to change the set value of the governor at the time of gas type conversion, and the flow rate loss due to the governor causes a combustion state. There was a problem in setting the combustion conditions because there was a difference in the conditions, especially in the state where it was difficult to use for a stove burner, etc., and there was a case that the temperature of the equipment increased excessively at abnormal gas pressure. In the present invention, since the secondary gas pressure in the vicinity of the nozzle is controlled to be constant without using a governor, the burner combustion characteristics are the same as the conventional one, no special consideration is required, and it is always constant with respect to the set thermal power. It has the effect of obtaining the firepower of.

FIG. 18 shows the total drive determination means. When the thermal power is adjusted, it is divided into coarse pressure adjustment and fine pressure adjustment. At the time of coarse pressure adjustment, a plurality of stoves are operated at the same time.
The other stoves are temporarily stopped, and the pressure is adjusted one by one, which has the effect of quickly controlling the fire power by dealing with spills during coarse pressure adjustment, and with the processing capacity of the microcomputer (central control means) during fine pressure adjustment. It has the advantages of cost advantage and accuracy improvement, such as compounding and sequential conversion of multiple pressure sensors.

FIG. 19 shows a means for displaying the secondary gas pressure of each burner on the display tube. The display on the display tube is configured to display the remaining cooking time, the temperature of the bottom of the pan containing the oil used for tempura, etc. However, by operating specific keys, the secondary gas pressure of each burner can be displayed. Can be displayed. By displaying the secondary gas pressure, the performance confirmation at the time of manufacturing does not require a special instrument, and the measurement preparation can be easily performed by only key operation, and the same convenience can be obtained at the time of servicing. The time can be shortened.

FIG. 20 shows a method of supplying electric power from a backup power source so that the cooking utensils can be used even during a power failure. However, the backup power source does not require a large capacity and can be used for a long time. Therefore, with the aim of limiting the power consumption to the minimum required limit, there is an effect of realizing a small capacity and long time use as a configuration for performing power saving for display and thermal power adjustment.

In FIG. 21, the temperature of the temperature sensor is detected,
In the invention relating to the temperature detection of the temperature sensor used for the purpose of preventing the tempura fire in which the oil temperature becomes abnormally high and the oil ignites, the control circuit detects the short circuit or open state of the temperature sensor as in the example shown in FIG. Therefore, in consideration of safety, the input end of the temperature sensor is input to the microcomputer (central control means) in two systems of A and B, even if one end should fail, the other end detects it. Is done V1
The fact that the voltage at the point becomes 0 V or Vcc (power supply voltage) when the circuit is short-circuited or open is used to ensure safety in the event of a sensor failure. However, this method cannot detect the intermediate potential failure of the temperature sensor (for example, if the simulated resistor R1 is added to the temperature sensor, the resistance change becomes very small, and the temperature of the pot bottom temperature is not accurately detected.) Unsafe side It will work. In order to solve this problem, it is necessary to detect the state of 4 (temperature sensor temperature at unsafe side failure) as shown in FIG. This 4 curve has very little temperature rise regardless of oil or water. However, if only the temperature rises are compared, for example, in the case of high-load cooking when the thermal power is at a minimum, the same curves are obtained, and the result is that good products are also determined to be defective. In the present invention, in order to solve this problem, as a method of confirming that the maximum thermal power has passed a certain time, the maximum thermal power setting position, the method of confirming the current position determination means, and the maximum thermal power by the gas pressure determination means The secondary gas pressure is set to either of the above two methods, and the temperature sensor is configured to judge whether the temperature sensor is good or bad based on the temperature and temperature gradient, and a safe and highly reliable temperature sensor failure determination method is used. It is intended to be incorporated into.

Although the gas cooker has been described as an example of the use of the pressure sensor, the effect of the present invention can be applied not only to the gas cooker but also to gas combustion appliances in general, and particularly gas fan heaters and gas hot water supplies. It can be an effective combustion device for vessels.

[0131]

As described above, according to the gas combustion apparatus of the present invention, the following effects can be obtained.

(1) By detecting the gas pressure by the gas pressure determination means and adjusting the pressure by the flow rate control means so that the set gas pressure set by the heating power setting means is always maintained, the set heating power is lowered particularly at low setting heating power. Always constant, eg 10 after boiling
Cook over low heat. It can be done without variation in time. Also, since it is not necessary to set the minimum thermal power that anticipates the lower limit of the supply gas pressure, using the conventional burner, 400 Kcal /
The result of h was squeezed to 300 Kcal / h, and it is possible to retain heat that could not be done in the past. Further, since the throttle mechanism can be constituted by a needle mechanism, a proportional valve, or the like, unlike a solenoid valve, there is little sudden change in flame, and there is no anxiety.

(2) By adding a flow rate regulating device to the gas inflow portion of the pressure detecting portion, the amount of gas leakage when the pressure detecting portion is damaged is regulated. Also, if there is a minute gas leak, the measured value may indicate that the gas pressure is abnormal, and if the pressure detection unit is damaged, gas leakage may occur, causing a fire in the vessel. By installing a device, the amount of leakage is very small, and it is possible to prevent danger, and even if it is a minute gas leak due to minute destruction of the pressure sensing part, there is a regulated gas amount of the flow rate control device, so the gas pressure drops at the pressure sensing part. Since the gas pressure determination means determines that the gas pressure is abnormal, it is possible to detect the abnormality early.

(3) Even if the set gas pressure is not reached, by stopping the drive means at the movable limit point of the position determination means, dust or the like cannot be caught in the gas flow rate adjusting section of the flow rate control means and cannot be fully throttled. In this case, the throttling mechanism does not stop the throttling motion until the pressure reaches a predetermined pressure, and finally, it is determined that the throttling mechanism is defective, and the stopping of the device is prevented, and an unreasonable load is applied to the throttling mechanism.

(4) When the secondary gas pressure is lower than a predetermined gas pressure at the maximum thermal power position of the thermal power control device, it is shown that the supply gas pressure is low by notifying or stopping the combustion of the equipment,
Notify and do not continue combustion in an unsafe combustion state. The notification also gives the user an opportunity to investigate the cause of the low supply gas pressure. For example, a broken gas rubber tube, half-opened gas valve, etc.

(5) By varying the drive speed of the flow rate control means by the drive speed determination means, for example, when switching from high heat to low heat, the speed is increased to just before low heat, and when finely adjusting to the set gas pressure, the speed is decreased. As a result, when weakening the heat power after boiling, it is possible to rapidly squeeze,
When finely adjusting the pressure, adjust slowly so that it is not over-throttled and fire will not occur.

(6) When the maximum heat power is set, the standard of the supply gas pressure is adjusted even if the supply gas pressure is high by adjusting the maximum use gas pressure determined by the limit gas pressure determining means for determining the maximum use gas pressure. By adjusting the maximum heating power at the time of gas pressure, the temperature rise of the body overheating is low, and the electronic circuit inside the body is not exposed to the abnormally high temperature atmosphere, so the risk of burns is reduced and the cause of equipment failure is also reduced. .

(7) The gas type setting means, the burner calorie setting means, and the weak calorie correction means set the gas pressure for adjusting the heat power according to the gas type and switch the burner combustion amount, for example, a large calorie burner. When changing the position of the middle calorie burner, the set gas pressure value corresponding to the burner capacity can be changed without changing the throttle mechanism. Since it is not necessary to replace the needle of the conventional throttling mechanism, the number of replacement parts can be reduced. Further, since the gas block that causes gas leakage is not disassembled, safety is secured and the replacement time can be shortened. In addition, the position change of the large burner and the middle burner is also compatible with the changeover of the switch, which has the same effect.

(8) The optimum minimum gas pressure for different flammability can be finely set depending on the gas type, and stable small fire performance can be obtained. The gas pressure can be set finely to prevent misfiring due to excessive throttling.

(9) The gas pressure judgment and correction means are provided to correct the measurement error due to the atmospheric temperature and the measurement error due to secular change, and the reference point when there is no gas pressure can be constantly calibrated. The lower the firepower, the better 400Kc
Al / h level is commonly used. The gas pressure at that time varies depending on the gas type, but is around ₂ mmH ₂ 0, so the reference point when there is no gas pressure is very important. It is necessary to always correct the ambient temperature and the error due to aging,
Accurate gas pressure can be measured by correcting.

(10) By providing the gas pressure determination / correction means, when there are many measurement errors due to atmospheric temperature and measurement error aging, notification is given before suddenly becoming unusable, and a repair request is made while using. It becomes possible to do it.

(11) By providing the gas pressure determination correction means, if the gas pressure sensing unit fails, such as when there are many measurement errors due to atmospheric temperature or measurement error secular change, the combustion state cannot be controlled and danger is prevented. So do not burn.

(12) Since the plurality of combustion devices have only one gas blocking function, the power consumption is low and the cost is low. Since it consumes less power, it can be driven by dry batteries.

(13) The driving means also serves as the driving means for the gas closing means, and when the closing means is closed, the driving means and the closing part are separated from each other, so that the space is small and the cost is low. In the closed state, the drive means and the closing portion are not in contact with each other, so that the gas can be reliably shut off.

(14) The set gas pressure of the heating power setting means and 2
When a plurality of combustion sections overlap in a state where the difference from the next gas pressure is less than a certain value, the microcomputer is set by putting the other in the primary drive stopped state until one pressure adjusting process is completed with priority. The processing speed of the central control means) does not need to be high, and simultaneous movement is performed until a predetermined value is reached, so when it is desired to reduce the heating power quickly after boiling, the heating power is immediately reduced.

(15) By providing the instrument status display judging means and displaying the secondary gas pressure on the display means by a specific key input operation, the inspection can be performed without using a special measuring instrument. It is useful in service and manufacturing inspection process.

(16) A plurality of cylinders or conical shapes are provided on the concentric circle of the driving body of the throttle mechanism of the flow rate control means, and a plurality of concentric cylinders are provided on the fixed body facing the driving body. Alternatively, by varying the area of the gap with the conical shape, it is possible to secure a movable pressure adjustment range for the throttle mechanism for adjusting the thermal power from low calorific value gas to high calorific value gas for each gas. Depending on the type, the throttle mechanism is too throttled, and repeated operation such as high is continued for a long time so that it can be adjusted to a predetermined gas pressure quickly without being noisy.

(17) The throttle mechanism of the flow control means is an LP
The minimum flow rate restriction hole for G is provided independently of the throttling mechanism to ensure the minimum flow rate even when the throttling mechanism is fully closed, and fire will not occur if the throttle is over-throttled.

(18) In the flow rate control means, a shock absorber is provided in the throttle mechanism at the limit point of the drivable range in the direction of the minimum throttle so that impact force is applied to the throttle mechanism and the drive device when the throttle is fully stopped. It softens and prevents the cause of failure.

(19) The driving means is also used as the driving means of the gas closing means, and one driving means serves as a diaphragm mechanism.
By driving the closing mechanism, the space is small and the cost is low.

(20) By varying the drive speed of the flow rate control means by the drive speed determination means, for example, when switching from high heat to low heat, the speed is increased to just before low heat, and when finely adjusting to the set position, the speed is decreased. By straining, when weakening the heat power after boiling, it is possible to quickly squeeze,
When making fine adjustments, the throttle is slowly adjusted so that it will not be over-throttled, so there is little reciprocating motion and fire does not occur.

(21) The power failure judging means limits the display of the display means at least in order to reduce power consumption at the time of power failure or stops the power saving operation to make the capacity of the backup power source small, and at a low cost for a long time. Can be used.

(22) The position determining means and the equilibrium temperature determining means determine that the pan bottom temperature sensor has a poor resistance change characteristic, thereby detecting that the pan bottom temperature cannot be accurately measured, and thus risking abnormal oil overheating. prevent.

(23) The gas pressure determination means and the equilibrium temperature determination means determine that the pan bottom temperature sensor has a poor resistance change characteristic, thereby detecting that the pan bottom temperature cannot be accurately measured, and the oil is overheated abnormally. It has the effect of preventing

[Brief description of drawings]

FIG. 1 is a perspective view of a cooking device according to an embodiment of the present invention.

FIG. 2 is a block diagram of the gas and electronic circuit of the same embodiment.

[Figure 3] Enlarged view of the operation panel

FIG. 4 is an enlarged cross-sectional view of the flow rate control means when the gas is closed.

FIG. 5 is an enlarged cross-sectional view of the flow rate control means at maximum thermal power.

FIG. 6 is an enlarged cross-sectional view of the flow control means when adjusting the intermediate thermal power.

FIG. 7 is an enlarged sectional view of the flow rate control means when the adjustment range is limited.

FIG. 8 is an enlarged cross-sectional view showing a minimum thermal power restriction hole portion of the flow rate control means.

FIG. 9 is a block diagram showing a basic outline of various determination means of the gas combustion device.

FIG. 10 is a diagram showing the contents of gas type setting means.

FIG. 11 is a diagram showing an outline of a heating power setting means.

FIG. 12 is a diagram showing the contents of gas pressure determination means.

FIG. 13 is a diagram showing the contents of position determination means.

FIG. 14 is a diagram showing the contents of drive determination means.

FIG. 15 is a diagram showing the contents of supply gas pressure abnormality determination means.

FIG. 16 is a diagram showing the contents of a pressure sensor 0th-order gas pressure correction determination means.

FIG. 17 is a diagram showing the contents of a gas pressure high cut means.

FIG. 18 is a diagram showing the contents of a total drive determination means.

FIG. 19 is a diagram showing the contents of a device display state determination means.

FIG. 20 is a diagram showing the contents of a power failure judging means.

FIG. 21 is a diagram showing the contents of equilibrium temperature determination means.

FIG. 22 is a diagram showing the contents of abnormal temperature determination means.

FIG. 23 is a schematic electronic circuit diagram for converting temperature sensor resistance change into voltage.

FIG. 24 is a diagram showing the detected temperature when the temperature sensor is normal and when it is abnormal.

FIG. 25 is a perspective view of a conventional device.

FIG. 26 is an enlarged view of a conventional operation panel section.

FIG. 27 is an explanatory diagram of a conventional gas control device.

[Explanation of symbols]

 1 Burner 2 Temperature Sensor 8 Display Tube 25 Electronic Circuit 28 Flow Control Means 31 Nozzle 36 Central Control Means (Microcomputer) 40 Calorie Changeover Switch 41 Gas Type Changeover Switch 49 Pressure Sensor Conversion Circuit 77 Switch A 78 Switch B 79 Throttle Mechanism 86 Gas pressure detection means (pressure sensor)

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location F24C 3/12 L 6909-3L

Claims (23)

[Claims] 1. A burner for burning a combustible gas, a nozzle for supplying the combustible gas to the burner, a flow rate control means for controlling a supply amount of the combustible gas supplied to the nozzle portion, the flow rate control means and the nozzle. Between the gas pressure detection means for detecting the pressure of the combustible gas between, the thermal power setting means for setting the combustion amount of the combustible gas in the burner, the central control means connected to the thermal power setting means and the gas pressure detection means The control central control means, so that the combustion amount of the burner is in the combustion state set by the thermal power setting means,
A gas combustion device configured to drive a flow rate control unit to control a supply amount of the combustible gas to the burner to a predetermined value by a signal of the gas pressure detection unit. 2. The gas flowing into the pressure sensing section of the gas pressure sensing means flows into the flow path communicating between the flow rate control means and the nozzle via the flow rate regulating section. 1. The gas combustion device according to 1. 3. The flow rate control means comprises throttle means for varying the flow rate of the combustible gas supplied to the nozzle, and drive means for driving the throttle means, and the gas pressure in the closed state of the throttle means. When the detected gas pressure of the detection means does not reach a predetermined position corresponding to the value set by the thermal power setting means, the central control means stops the opening / closing operation of the throttle means by the drive means at a preset closing limit position. The gas combustion apparatus according to claim 1, which has a structure. 4. A gas type switching means for switching and setting a used gas type is provided, and a position detecting means for determining that the throttle position is the maximum area of the throttle means of the flow rate control means is provided and detected. When the gas pressure detected by the gas pressure detecting means is lower than the predetermined gas pressure, the central control means performs at least one of warning and stopping the supply of combustible gas to the burner. The gas combustion device according to claim 1. 5. The central control means is provided with drive speed determination means for controlling the drive speed of the drive means, and a gas pressure corresponding to a predetermined thermal power set by the thermal power setting means and the gas pressure detection means are detected. The gas combustion apparatus according to claim 1, wherein the driving speed of the driving means is controlled according to the degree of difference in gas pressure. 6. A gas type switching means for switching and setting a used gas type is provided, and when the maximum thermal power is set by the thermal power setting means, the gas pressure detected by the gas pressure detecting means is set by the gas type switching means. When the maximum gas pressure of the selected gas type is higher than the maximum gas pressure detected by the gas pressure detection means, the central control means drives the flow rate control means to set the detection gas pressure detected by the gas pressure detection means to the maximum used gas pressure. 2. The gas combustion apparatus according to claim 1, wherein the gas combustion apparatus is configured to regulate the pressure to. 7. A burner calorie switching means for setting the maximum combustion amount according to the combustion capacity of each burner is provided, which corresponds to the minimum combustion amount corresponding to the maximum combustion amount of each burner set by said burner calorie switching means. The central control means performs the correction of the gas pressure value to be controlled.
The described gas combustion device. 8. A gas type switching means for switching the used gas type is provided, and the central control means judges the used gas type set by the gas type switching means, and sets the thermal power according to the used gas type. The gas combustion apparatus according to claim 1, wherein a minimum set gas pressure corresponding to the minimum thermal power of the means is predetermined. 9. The flow control means is provided with a closing means for opening and closing a gas passage in addition to the throttle means and the driving means,
Further, in the central control means, storage means for storing the gas pressure value when the gas pressure value (atmospheric pressure value) applied to the gas pressure detecting means when the closing means is in a closed state is within a predetermined value,
2. The gas combustion apparatus according to claim 1, further comprising a gas pressure determination / correction unit that corrects a reference value by using the value stored in the storage unit as an atmospheric pressure value. 10. The flow control means is provided with a closing means for opening and closing a gas passage, in addition to the throttle means and the driving means, and the central control means is further provided with the gas pressure when the closing means is in a closed state. Gas pressure value (atmospheric pressure value) applied to the detection means
When is within a predetermined value, storage means for storing the gas pressure value is provided, and when the gas pressure value (atmospheric pressure value) applied to the gas pressure detecting means when the closing means is in a closed state exceeds a predetermined value. ,
The gas combustor according to claim 1, wherein a notification is given. 11. The flow control means is provided with a closing means for opening and closing a gas passage in addition to the throttle means and the driving means, and the central control means is further provided with the gas pressure when the closing means is in a closed state. Gas pressure value (atmospheric pressure value) applied to the detection means
When is within a predetermined value, storage means for storing the gas pressure value is provided, and when the gas pressure value (atmospheric pressure value) applied to the gas pressure detecting means when the closing means is in a closed state exceeds a predetermined value. ,
The gas combustion apparatus according to claim 1, wherein combustion is stopped. 12. The gas combustion apparatus according to claim 1, wherein in a combustion apparatus using a plurality of combustion apparatuses, the gas is supplied to the combustion apparatus from a single gas cutoff valve. 13. A flow rate control means, a throttle means for varying the flow rate of the combustible gas supplied to the nozzle, a drive means for driving the throttle means, and a flow range control means having a movable range of the throttle means. Position detection means for detecting the current position within the limit and the movable range, and further provided with a closing means for opening and closing the gas passage, the driving means also serves as the driving means for the throttle means and the gas closing means, 2. The gas combustion apparatus according to claim 1, wherein the drive means and the closing portion of the closing means are separated from each other when the closing means is closed. 14. In an apparatus using a plurality of combustion devices, the flow rate control means of each of the combustion devices drives a throttle means for varying the flow rate of the combustible gas supplied to the nozzle, and the throttle means. A drive means, a position detection means for detecting the limit of the movable range of the throttle means and the current position within the movable range, and a closing means for opening and closing the gas passage are provided, and a central control means corresponding to each of the combustion devices. Is provided with drive speed determination means for controlling the drive speed of the drive means of the flow rate control means, and total drive determination means for controlling the overall drive control of the plurality of independent flow rate control means. The means overlaps the combustion operation of the plurality of combustion devices in a state where the difference between the gas pressure corresponding to the set thermal power of the thermal power setting means and the gas pressure obtained by the gas pressure detection means is a predetermined value or less. And when the combustion apparatus of claim 1, wherein the gas that features be activated by a predetermined priority. 15. A display means for displaying a combustion setting status and the like, and an instrument status display determining means for displaying a performance state of the equipment by a specific key input operation are provided in the central control means. 2. The gas combustion apparatus according to claim 1, wherein the gas pressure of the gas pressure detection means can be displayed on the display means. 16. A combustion device for a gas combustion apparatus, wherein the throttle mechanism of the throttle means for adjusting the thermal power controls the flow rate adjustment of the low calorific value gas and the flow rate adjustment of the high calorific value gas by a single drive means. Combustion device for gas. 17. The gas combustion apparatus according to claim 16, wherein the throttle mechanism of the throttle means has a minimum flow rate regulating hole for the LPG provided independently of the throttle mechanism. 18. A driving means for driving the diaphragm means, and a position detecting means for detecting a limit of a movable range of the diaphragm means and a current position within the movable range are provided, and the diaphragm means is arranged in a minimum diaphragm direction. The gas combustion apparatus according to claim 16, wherein a shock absorber is provided in the throttle mechanism at a limit point of the drivable range. 19. A limit detecting means for detecting the limit of the movable range of the throttle means and the current position within the movable range and a closing means for opening and closing the gas passage are provided, and the drive means serves as both the throttle means and the closing means. The gas combustion apparatus according to claim 16, characterized in that 20. A burner for burning a combustible gas, a nozzle for supplying the combustible gas to the burner, a flow rate control means for controlling a supply amount of the combustible gas supplied to the nozzle portion, and a combustion of the combustible gas in the burner. Thermal power setting means for setting the amount, further, the flow rate control means includes a slide type throttle means for varying the flow rate of the combustible gas supplied to the nozzle, drive means for driving the throttle means, and the throttle means. Is provided with position detection means for detecting the limit of the movable range and the current position within the movable range, and by the signal of the position determination means so as to reach the diaphragm position of the diaphragm means corresponding to the thermal power set by the thermal power setting means. Central control means for driving the flow rate control means to control it to a predetermined position is provided, and the central control means further includes the thermal power from the current position within the possible range of the throttle means. When the heating power is changed by the constant means, a drive speed determination means is provided for controlling the drive speed of the drive means in order to speed up or slow down the speed of the drive means depending on the length of the drive distance of the new changed position of the aperture means. A gas combustion device characterized by 21. In the combustion control of a gas burning appliance, a thermal power setting means for setting thermal power, a flow rate control means for controlling thermal power, an appliance state display determining means for determining the performance state of the appliance, and a cooking temperature. A display means for displaying various states such as sensor temperature and cooking time, a backup power supply for supplying power at the time of a power failure, and a power failure determination means, the power failure determination means displaying at least the display means for reducing power consumption at the time of power failure. A gas combustion device characterized by limiting or stopping 22. A temperature detecting means for detecting a pot bottom temperature, a burner for burning a combustible gas, a nozzle for supplying the combustible gas to the burner, and a flow rate control for controlling a supply amount of the combustible gas supplied to the nozzle portion. Means, a thermal power setting means for setting the combustion amount of the combustible gas in the burner, and further, the flow rate control means, a throttle means for controlling the supply amount of the combustible gas supplied to the nozzle, and driving the throttle means. Driving means and position detecting means for detecting the limit of the movable range of the diaphragm means and the current position within the movable range, so that the diaphragm position of the diaphragm means corresponding to the thermal power set by the thermal power setting means is reached. Is provided with central control means for driving the flow rate control means by a signal from the position determination means to control the flow rate control means to a predetermined position. Further, the central control means has a temperature obtained from the temperature detection means. Therefore, equilibrium temperature determination means for determining whether an equilibrium temperature condition has occurred with a temperature rise gradient equal to or greater than a specified value within a predetermined temperature range, the equilibrium temperature determination means determines that equilibrium temperature exists, and the position determination A gas combustion device characterized in that if the judgment position of the means is at the maximum thermal power position, the pan bottom temperature sensor is judged to be defective and combustion of the equipment is stopped. 23. A temperature detecting means for detecting a pot bottom temperature, a burner for burning a combustible gas, a nozzle for supplying the combustible gas to the burner, and a flow rate control for controlling a supply amount of the combustible gas supplied to the nozzle portion. Means, gas pressure detection means for detecting the pressure of the combustible gas between the flow rate control means and the nozzle, heating power setting means for setting the combustion amount of the combustible gas in the burner, the heating power setting means and the gas pressure. The flow rate control means is driven by the signal of the gas pressure detection means for the supply amount of the combustible gas to the burner so that the combustion amount in the burner connected to the detection means becomes the combustion state set by the thermal power setting means, Central control means for controlling to a predetermined gas pressure value is provided, and the central control means further regulates a temperature rise gradient within a predetermined temperature range from the temperature obtained from the temperature detection means. If the equilibrium temperature determining means is provided for determining whether an equilibrium temperature condition has occurred, the equilibrium temperature determining means determines that there is an equilibrium temperature, and the secondary gas pressure is equal to or higher than a predetermined gas pressure, the pot bottom temperature is reached. A gas combustion device characterized by judging that the sensor is defective and stopping the combustion of the equipment.