JP6295766B2 - Combustion equipment and battery-powered gas stove - Google Patents

Description

  The present invention relates to a combustion device that operates using a battery such as a battery-driven gas stove as a power source.

  As this type of conventional battery-driven gas stove, for example, the one disclosed in Patent Document 1 below is known. This conventional battery-driven gas stove includes an electrical board having a microcomputer control circuit for controlling the combustion operation. The microcomputer control circuit includes a power supply circuit that supplies the voltage of the dry battery stored in the battery box to various circuits on the electrical board, a switch input circuit that inputs on / off signals output from various operation switches, an operation panel, An operation panel communication circuit that communicates with each other, an igniter circuit that drives the igniter, a flow rate adjustment valve circuit that controls the drive of the flow rate adjustment valve of the flow rate adjustment unit, and a safety valve circuit that controls the drive of the safety valve Are connected to each other. Further, the microcomputer control circuit is provided with a plurality of analog input ports for inputting various analog signals, and an analog signal input circuit such as a thermocouple input circuit or a thermistor is connected to each analog input port.

  As described above, in the conventional battery-driven gas stove, one microcomputer control circuit is provided on one electric board, and the microcomputer operation circuit controls the combustion operation and performs various input / output controls.

JP 2011-38696 A

  In recent years, the number of various operation switches mounted on the operation panel has been increasing along with the multi-function of the gas stove such as mounting various cooking modes, and accordingly, a microprocessor having a large number of input ports is required. However, such a multi-pin microcomputer causes an increase in cost. In addition, the number of wires between the operation panel and the microcomputer control circuit also increases according to the number of operation switches, and the number of connectors for connection increases, which increases costs and complicates wiring during manufacturing. It was.

  On the other hand, the above problem can be solved by mounting a microcomputer for input / output control in the operation panel separately from the above-mentioned electric board, and communicating with the microcomputer on the electric board. However, there is a problem that the power consumption is increased and the battery is consumed quickly.

  Accordingly, a first object of the present invention is to improve the work efficiency during manufacturing and reduce the cost by simplifying the wiring between the combustion control microprocessor and a number of operation switches. Furthermore, a second object of the present invention is to make it possible to reduce power consumption as much as possible by shutting off the power supply to the microprocessor when it is unnecessary.

  In order to achieve the above object, the present invention takes the following technical means.

  That is, the combustion device of the present invention includes a main control board having a combustion control microprocessor, an input / output board having an input / output control microprocessor that communicates with the combustion control microprocessor, and a power supply. A battery and a power supply line for supplying power between the main control board and the input / output board;The operation panel that can be opened and closed and the open / closed state of the operation panel are detected. Open / close state detection switchThe battery comprises:Main controlConnected to the board,The above outputFor substratesMain controlPower is supplied through the substrate and the power supply line.,AboveInput / outputThe substrate is connected to the power supply line.Input / outputSaid on the substrateFor input / output controlWhether to continue or shut off the power supply to the microprocessorFor input / output controlSwitching based on control signal from microprocessorFirstEquipped with a power supply cutoff circuit,PreviousRecord FirstThe power supply cut-off circuit is configured to supply power to the input / output control microprocessor when the operation panel is opened, and the input / output control microprocessor starts to supply power. And givenFirstThe control signal for continuing the power supply until the power shutoff condition is satisfiedFirstOutput to the power supply cut-off circuit.

According to the combustion apparatus of the present invention, the input / output board having the input / output control microprocessor is provided separately from the main control board having the combustion control microprocessor so that the two processors can communicate with each other. Therefore, an operation unit having a large number of operation switches is mounted on the input / output board, and the operation detection of a large number of operation switches by a dynamic scan method or the like is performed by an input / output control microprocessor, and the detected operation contents are burned as digital data. If the communication port can be secured in the combustion control microprocessor even if the number of operation switches can be increased, the operation content can be transmitted to the control microprocessor via communication (for example, serial communication). To control the combustion according to the operation, Simplifies wiring between the shrink control microprocessor and a number of operating switches for, with wiring work can be simplified at the time of manufacture, the wiring connector can also be either small, the manufacturing cost can be reduced. In addition, since the power supply battery is connected to the main control board and power is supplied to the input / output board via the power supply line connected to both boards, there is no need to provide a battery separately for each board. by a common battery Ru can drive the microprocessor on both substrates.

  In the combustion apparatus of the present invention,Main controlThe substrate from the batteryMain controlSaid on the substrateFor combustion controlWhether to continue or shut off the power supply to the microprocessor For combustion controlSwitching based on control signal from microprocessorSecondThe power supply cutoff circuit can be provided (claim 2). According to this, it is determined whether or not a predetermined shut-off condition (for example, that a person is not detected during combustion control or in the vicinity and has not been operated for a predetermined time) is satisfied.For combustion controlJudging by the microprocessor and satisfying the shut-off conditionSecondThe control signal output to the power supply cut-off circuit is a signal that cuts off the power supply to itself (for example, a Low output signal), so that it can be used when it is not needed.Main controlOn boardFor combustion controlIt is possible to cut power supply to the microprocessor and reduce power consumption.

Furthermore, in the combustion apparatus of the present invention, the second power supply cutoff circuit cuts off the power supply to the power supply line when the power supply to the combustion control microprocessor on the main control board is cut off. (Claim 3). According to this, when the power supply is cut off by the second power supply cut-off circuit, it is possible to cut off the power supply to the input / output control microprocessor on the input / output board via the power supply line. Power consumption can be reduced, and the battery life can be extended.

  Furthermore, the combustion apparatus of the present invention further comprises a power supply start switch, SecondWhen the power supply start switch is operated, the power supply cutoff circuit ofMain controlSaid on the substrateFor combustion controlThe circuit is configured to supply power to the microprocessor.For combustion controlWhen the power supply is started, the microprocessorSecondThe control signal for continuing the power supply until the power shutoff condition is satisfiedSecondOutput to the power supply cutoff circuit. According to this,SecondBy operating the power supply start switch when the power supply by the power supply cutoff circuit is cut off Main controlOn boardFor combustion controlIt becomes possible to resume the power supply to the microprocessor. And the relevantFor combustion controlA control signal (for example, High output signal) for continuing power supply immediately after the microprocessor is startedSecondThe power supply can be continued even after the operation of the power supply start switch is finished. As the power supply start switch, a so-called power switch (switch for turning on / off power) can be normally used, but an instrument plug or other various operation switches can also function as a power supply start switch. .

In the combustion apparatus of the present invention, the input / output board determines whether the power supply from the power supply line to the input / output control microprocessor on the input / output board is continued or cut off . Since the first power supply cutoff circuit that switches based on the control signal from the microprocessor is provided (Claim 1) , the microprocessor for input / output control determines whether or not a predetermined cutoff condition is satisfied, If the control signal output to the first power supply cutoff circuit when the cutoff condition is satisfied is one that cuts off the power supply to itself (for example, a Low output signal), the input / output control micro on the input / output board is used when not required. It is possible to reduce power consumption by cutting off only power supply to the processor.

The front Symbol first power supply cutoff circuit, the output being the circuit configured to perform power supply to the control microprocessor, the microprocessor for the output control when the operation panel is opened since the power supply is started a control signal for continuing the power supply to a predetermined first power supply shutdown condition is satisfied and outputs the first power supply cutoff circuit (claim 1), first When the power supply by the power supply cut-off circuit is cut off, the power supply to the microprocessor on the input / output control board can be resumed by opening the operation panel. The input / output control microprocessor on the input / output control board outputs a control signal (for example, a High output signal) for continuing power supply immediately after startup to the first power supply cut-off circuit. Even if the panel is closed, the power supply can be continued. For example, during the execution of a predetermined combustion control mode, the power supply to the input / output control microprocessor can be continued even if the operation panel is closed.

The combustion device of the present invention can be applied to various battery-driven combustion devices such as a water heater, a heating device, and various cooking devices, but can be suitably applied to a battery-driven gas stove having various operation switches (Claim 5 ). .

It is a schematic circuit diagram for demonstrating the power supply circuit to the control part of the battery drive type gas stove (combustion apparatus) which concerns on a reference example . It is an external appearance perspective view of the gas stove. It is a schematic circuit diagram for demonstrating the power supply circuit to the control part of the battery drive type gas stove (combustion apparatus) which concerns on the 1st Embodiment of this invention. It is a schematic circuit diagram for demonstrating the power supply circuit to the control part of the battery drive type gas stove (combustion apparatus) which concerns on the 2nd Embodiment of this invention. It is a schematic circuit diagram for demonstrating the power supply circuit to the control part of the battery drive type gas stove (combustion apparatus) which concerns on another reference example .

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the drawings.

1 and 2 show a battery-driven gas stove 1 (combustion equipment) according to a reference example . As shown in FIG. 2, this gas stove 1 has three stove burners 2, 3, 4 and a grill burner ( It is constituted by a built-in type gas stove provided with a grill part 6 provided with a not-shown). It is configured.

  The upper surface of the gas stove is covered with a glass top plate 5, and a grill exhaust port 7 for exhausting air from the grill portion 6 is formed behind the top plate 5.

  On the front side of the gas stove, there is a power switch 8 (power supply start switch), appliance plugs 2A, 3A, 4A corresponding to each of the stove burners 2, 3, 4 and cooking settings in each of the stove burners 2, 3, 4 An open / close type operation panel 9 for the burner and a grill burner open / close type operation panel 10 for performing a fire extinguishing operation and cooking setting of the grill burner in the grill portion 6 are provided. Each of the operation panels 9 and 10 is provided with an operation unit 17 including a number of various operation switches for performing various cooking mode setting operations. Each operation switch may be a mechanical contact type switch or a touch sensor type switch. The operation panels 9 and 10 are respectively disposed on the upper surface of the kangaroo pocket.

The gas stove 1 has a built-in control unit that controls the combustion of the stove burners 2, 3, 4 and the grill burner according to the operation of the appliance plugs 2A, 3A, 4A and the setting operation of the various operation switches. As shown in FIG. 1, the control unit of the present reference example includes an input / output control CPU 13 (microprocessor) that performs serial communication between the main control board 12 having the combustion control CPU 11 (microprocessor) and the combustion control CPU 11. An input / output board 14 having a processor), a dry battery 15 for power supply, and power supply lines 16 a and 16 b for supplying power between the main control board 12 and the input / output board 14. The dry battery 15 is detachably attached to a battery holder (not shown) provided on the gas stove 1, and the positive electrode of the dry battery 15 is connected to the power shut-off switching element Q 1 and the Vcc line 12 a (power line) on the main control board 12. Is connected to the positive power supply terminal (Vcc) of the combustion control CPU 11, while the negative electrode of the dry battery 15 is connected to the negative power supply terminal of the combustion control CPU 11 via the GND line 12 b (ground) on the main control board 12. (GND). The voltage of the dry battery 15 may be supplied to the Vcc line 12a as it is. However, the battery voltage is converted into a predetermined voltage such as 3V via a stabilized power circuit (not shown) by a DC / DC converter, and the Vcc line is supplied. 12a can also be supplied. Although not shown, an electromagnetic safety valve that opens and closes the fuel gas flow path for combustion control of each burner 2, 3, 4 and grill burner, an electromagnetic proportional valve that controls the opening degree of the fuel gas flow path, an igniter, etc. The built-in electric appliance is also supplied with power from the Vcc line 12a.

The main control board 12 performs combustion control of each burner of the gas stove 1 of this reference example . For example, whether or not fuel gas is supplied to each burner according to the set cooking mode and cooking time, and fuel In order to adjust the gas supply amount, the safety valve and the electromagnetic proportional valve are controlled, the operation of the igniter corresponding to each burner is controlled, and other necessary control is performed.

  The input / output board 14 can be provided for each operation panel 9, 10, and various operation switches of the operation panels 9, 10 can be mounted on each input / output board 14. The Vcc line 14a on the input / output board 14 is connected to the Vcc line 12a on the main control board 12 via the positive power supply line 16a, and the GND line 14b on the output board 14 is connected to the main via the negative power supply line 16b. Connected to the GND line 12b on the control board 12, the positive power supply terminal of the input / output control CPU 13 is connected to the Vcc line 14a, and the negative power supply terminal of the input / output control CPU 13 is connected to the GND line 14b. Thus, the input / output control board 14 and the input / output control CPU 13 are configured to be supplied with power from the dry battery 15 via the main control board 12 and the power supply lines 16a and 16b.

In this reference example , the operation unit 17 and the display unit 18 made up of a liquid crystal display device, an LED, and the like are provided on the input / output substrate 14, and the input / output control CPU 13 is a dynamic scanning method of various operation switches. It is possible to perform the operation detection control according to the above and to perform the low level display control of the display unit 18. The input / output board 14 and the main control board 12 are connected by a serial communication line 19, and the combustion control CPU 11 and the input / output control CPU 13 are configured to communicate with each other via the serial communication line 19. The content of data to be communicated and which range of processing and control each CPU 11 and 13 is responsible for can be designed as appropriate. For example, all the operation information of the various operation switches on the operation panels 9 and 10 may be transmitted from the input / output control CPU 13 to the combustion control CPU 11, and setting operations such as cooking mode and timer time setting are input / output. It is also possible to perform control only by the control CPU 13 and to transmit data related to the set cooking mode and time from the input / output control CPU 13 to the combustion control CPU 11 when the timer setting is confirmed. Further, the combustion control CPU 11 sends display command data for displaying information and other information to be notified to the user on the operation panels 9 and 10 to the input / output control CPU 13 in relation to the combustion control for cooking. The input / output control CPU 13 that has received the display command data can also be configured to perform display control of the display unit in accordance with the command content.

Further, in the present reference example , the main control board 12 switches the second power source that switches whether the power supply from the dry battery 15 to the combustion control CPU 11 is continued or cut off based on the control signal from the combustion control CPU 11. A supply cutoff circuit 20 is provided. The power supply cutoff circuit 20 continues to supply power from the dry battery 15 to the Vcc line 12a by turning on the power cutoff switching element Q1 while the control signal output from the combustion control CPU 11 is High output. On the other hand, when the control signal is switched to Low output, the power supply switching element Q1 is turned off to cut off the power supply from the dry cell 15 to the Vcc line 12a. More specifically, the switching element Q1 is composed of a pnp bipolar transistor, its emitter is connected to the positive electrode of the dry battery 15, its collector is connected to the Vcc line 12, and its base is a load resistor and an npn bipolar transistor. It is connected to the GND line 12b via the switching element Q2. The base of the switching element Q2 is connected to the output port of the control signal of the combustion control CPU 11, the collector of the switching element Q2 is connected to the base of the switching element Q1, and the emitter of the switching element Q2 is connected to the GND line 12b. Yes. Therefore, while the control signal is being output High, the switching element Q2 is turned on, the base of the power cutoff switching element Q1 is conducted to the GND line 12b, and power is supplied from the collector of the switching element Q1. On the other hand, when the control signal becomes a Low output, the switching element Q2 is turned off and the power cutoff switching element Q1 is also turned off, and the power supply is cut off by the switching element Q1.

  Further, a startup switching element Q3 is provided in parallel with the switching control switching element Q2 between the base of the power cutoff switching element Q1 and the GND line 12b. The switching element Q3 is also composed of a pnp bipolar transistor, and the power switch 8 is connected in circuit between its base and the positive electrode of the dry battery 15. Therefore, when the power supply switch 8 is operated when the power supply to the Vcc line 12a is cut off, that is, when the power cut-off switching element Q1 is turned off, the start-up switching element Q3 and the power cut-off switching element Q1 are turned on. Power supply is started, and the combustion control CPU 11 is thereby activated. The CPU 11 is configured to output a High signal as a control signal to the power supply cut-off circuit 20 immediately after startup, so that the power supply is continued even after the operation of the power switch 8 is finished. Yes.

The second power shut-off condition for switching the control signal to the power supply shut-off circuit 20 to the Low output may be appropriate. It can be determined that the operation switch has not been operated for a predetermined time or longer. Whether the operation switch has not been operated for a predetermined time or longer may be determined by the combustion control CPU 11 or may be determined by the input / output control CPU 13 and the determination result transmitted to the combustion control CPU 11. Moreover, it is also possible to add as a necessary condition that there is no person near the gas stove 1 as the second power-off condition. It should be noted that human detection can be detected by appropriate detection means such as an infrared sensor.

According to the gas stove 1 according to the present reference example , the operation unit 17 including various operation switches and the display unit 18 are provided on the input / output substrate 14 in the operation panels 9 and 10, and the operation unit 17 and the display are provided on the input / output substrate 14. Since the input / output control CPU 13 for performing input / output control of the unit 18 is mounted and communicated with the combustion control CPU 11 on the main control board 12, the opening / closing operation is performed even if the number of various operation switches is large. The number of wires between the input / output board 14 and the main control board 12 in the panels 9 and 10 can be reduced as much as possible, and the wiring work at the time of manufacture can be simplified and the cost can be reduced. Further, power is supplied to the input / output board 14 via the main control board 12 and the power supply lines 16a and 16b, and the power supply cut-off circuit 20 of the main control board 12 is connected to the combustion control CPU 11 and the input / output control CPU 13. The power supply can be shut off and restarted at once, and the power switch 8 is operated during use while reducing the power consumption when the gas stove 1 is not used as much as possible to extend the life of the dry battery 15. Thus, the CPUs 11 and 13 can be activated.

  In order to further improve the power consumption, when the operation panels 9 and 10 are opened, the state where the operation is not performed for a predetermined time is continued, or the state where the operation mode is not operated for a predetermined time after the cooking mode is set is continued. The display 13 can be controlled by the input / output control CPU 13 so as to turn off all displays. Conditions for returning the display by the display unit 18 may be appropriate, for example, when an operation switch for setting the automatic cooking mode is operated, when an error display is performed by the display unit 18, or when grill combustion is started. The display can be restored when necessary, such as when a switch or grill timer is set. Also, the display of the display unit 18 can be restored when the instrument plugs 2A, 3A, 4A are operated. In this case, the safety valve input circuit is used for combustion control in accordance with the operation of the instrument plugs 2A, 3A, 4A. By confirming that the safety valve opening signal has been input to the CPU 11 and returning the display on the display unit 18, the display on the display unit 18 is resumed when the safety valve does not open normally. Can be prevented.

FIG. 3 shows a schematic configuration of the control unit of the battery-driven gas stove according to the first embodiment of the present invention. The same configurations as those in the above-described reference example are denoted by the same reference numerals, detailed description thereof is omitted, and different configurations are illustrated. The effect will be described. In FIG. 3, the operation unit and the display unit of the input / output board 14 are not shown.

In the first embodiment, the input / output board 14 is also provided with a first power supply cutoff circuit 31 similar to that of the main control board 12, and the power supply from the positive power supply line 16a to the input / output control CPU 13 is provided. The circuit configuration is such that whether the supply is continued or cut off can be switched based on the control signal from the input / output control CPU 13. The power supply cut-off circuit 31 continues the power supply to the Vcc line 14a by turning on the power cut-off switching element Q1 while the control signal output from the input / output control CPU 11 is a high output. When the signal is switched to the Low output, the power supply switching element Q1 is turned off to cut off the power supply to the Vcc line 14a. Also, an open / close state detection switch 32 including a proximity switch for detecting the open / close state of the open / close operation panels 9 and 10 is provided. When the operation panels 9 and 10 are closed, the open / close state detection switch 32 is When the operation panels 9 and 10 are opened, the open / close state detection switch 32 is turned on. The open / close state detection switch 32 is connected between the positive power supply line 16a and the base of the startup switching element Q3, and the switch 32 functions as a power supply start switch for the CPU 13 for input / output control. When power is supplied to the control CPU 11, when the operation panels 9 and 10 are opened, power supply to the input / output control CPU 13 is started and the CPU 13 is activated. Therefore, according to the present embodiment, since the power supply to the input / output control CPU 13 is not started when the operation panels 9 and 10 are closed, the stove is used simply by operating the instrument plugs 2A, 3A, and 4A. In some cases, power consumption can be further reduced.

The first power shut-off condition for switching the control signal to the power supply shut-off circuit 31 to Low output may be appropriate. For example, when the switch operation is not performed for a predetermined time, or when the switchable operation panel 9 is operated. , 10 is closed, communication with the combustion control CPU 11 is no longer possible, or a panel power off switch (not shown) provided on the operation panels 9, 10 is operated. it can.

FIG. 4 shows a schematic configuration of the control unit of the battery-powered gas stove according to the second embodiment of the present invention. The same components as those in the first embodiment are denoted by the same reference numerals and detailed description thereof is omitted. Different configurations and effects will be described. In the present embodiment, a power supply line 33 drawn from the upstream side of the second power supply cutoff circuit 20 is provided on the main control board 12, and the positive power supply line 16 a is connected to the power supply line 33. Thus, the power supply to the combustion control CPU 11 and the power supply to the input / output control CPU 13 can be interrupted separately and independently. According to this, when it is desired to use only the function provided by the input / output control CPU 13, for example, when the setting content of the cooking mode is stored and held on the input / output control CPU 13 side, the setting content is to be confirmed. In such a case, it is possible to start only the input / output control CPU 13 without starting the combustion control CPU 11 to check the setting contents, and to reduce power consumption according to various usage situations. .

FIG. 5 shows a schematic configuration of a control unit of a battery-driven gas stove according to another reference example . The same configurations as those in the second embodiment are denoted by the same reference numerals, detailed description thereof is omitted, and different configurations are provided. The effect will be described. In this reference example , the main control board 12 and the input / output control board 14 are further connected by a power control signal line 34, and a power control signal output from the combustion control CPU 11 is transmitted via the power control signal line 34. The power is supplied to the base of the activation switching element Q3 of the power supply cutoff circuit 31 of the input / output control board 14. According to this, whether or not the power supply to the input / output control CPU 13 is started can be controlled by the combustion control CPU 11, and when the combustion control CPU 11 determines that it is necessary, If the power supply is cut off, the power supply can be started and various operations can be promoted or an error can be notified.

The present invention is not limited to the above-described embodiment, and the design can be changed as appropriate. For example, operation unit and a display unit can be provided in a separate operation board and display board input and output board. Moreover, the display part does not need to be provided. Further, the communication between the combustion control CPU 11 and the input / output control CPU 13 may be performed by a parallel communication method, or may be performed by superimposing serial communication data on the power supply line 16a.

1 Battery-powered gas stove (combustion equipment)
8 Power supply switch (Power switch)
9, 10 Operation panel 11 Combustion control microprocessor 12 Main control board 13 Input / output control microprocessor 14 Input / output board 15 Batteries 16a and 16b Power supply line 20 Second power supply cutoff circuit 31 First power supply cutoff circuit 32 Open / closed state detection switch

Claims (5)

A main control board having a combustion control microprocessor, an input / output board having an input / output control microprocessor communicating with the combustion control microprocessor, a battery for power supply, and the main control board A power supply line for supplying power to the entry output board; an operation panel capable of opening and closing; and an open / closed state detection switch for detecting an open / closed state of the operation panel , wherein the battery is connected to the main control board. Connected to and configured to be supplied with power to the input / output board via the main control board and the power supply line ,
The input / output board determines whether power supply from the power supply line to the input / output control microprocessor on the input / output board is continued or cut off based on a control signal from the input / output control microprocessor. comprising a first power supply cutoff circuit to switch Te,
Before SL first power supply cutoff circuit, the output being the circuit configured to perform power supply to the control microprocessor, the microprocessor for the output control when the operation panel is opened, A combustion apparatus characterized in that, when power supply is started, a control signal for continuing power supply until a predetermined first power supply cutoff condition is satisfied is output to the first power supply cutoff circuit. In the combustion apparatus of claim 1, wherein the main control board, the main control the said combustion control microprocessor whether to or cut off to continue the power supply to the combustion control microprocessor on the board from the battery A combustion apparatus comprising a second power supply cut-off circuit for switching based on a control signal from. 3. The combustion apparatus according to claim 2, wherein the second power supply cutoff circuit cuts off the power supply to the power supply line when the power supply to the combustion control microprocessor on the main control board is cut off. Combustion equipment characterized by that. In the combustion apparatus according to claim 2 or 3, further comprising a switch for starting the power supply, the second power supply cutoff circuit, the Omosei on your board when the power supply start switch is operated The combustion control microprocessor is configured to supply power to the combustion control microprocessor. When the power supply is started, the combustion control microprocessor continues to supply power until a predetermined second power-off condition is satisfied. A control signal for output to the second power supply cutoff circuit.   The battery-powered gas stove which consists of a combustion apparatus of any one of Claims 1-4.

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