JP3509932B2 - Operation mode switching device for combustion equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is capable of switching between an operating mode operated by an operating program for a combustion appliance such as a water heater and a bathtub, and an interrupt mode for setting numerical values of combustion appliance control conditions different from the operation mode. The present invention relates to an operation mode switching device for a burning appliance that performs the operation.

[0002]

2. Description of the Related Art In conventional combustion appliances, for example, capacity setting of a proportional valve (a valve that controls the amount of gas supplied to the burner by the valve opening amount) according to the maximum and minimum combustion capacities of a water heater The setting of the maximum valve opening drive current that corresponds to the maximum valve opening amount with the maximum combustion capacity and the minimum valve opening drive current that corresponds to the minimum valve opening amount with the minimum combustion capacity is performed manually. Even when inspecting the operating condition of the bath heater actuator or sensor, operate the water heater or bath heater according to the operation program, and wait until it reaches the step operation position of the sequence program in which the actuator operation to be inspected and sensor signals are read. Then, the operating state of the actuator to be inspected is checked, the sensor output data of the object to be inspected is monitored, and the presence or absence of failure is manually inspected.

[0003]

However, it is very inefficient to manually set the numerical value of the control condition of the combustion instrument such as the setting of the proportional valve capacity, and it is easy to make an error in the numerical value setting, and the reliability is improved. There is a problem on.

Also, when inspecting an actuator or the like of a combustion instrument, it is necessary to operate the instrument in accordance with a sequence program and wait until the program position where the actuator or the like to be inspected operates is reached, so the inspection takes too much time. There was a problem.

Therefore, the applicant is different from the operation mode in which the combustion appliance such as the water heater and the bathtub is operated according to the operation program, and the operation mode is different, for example, the numerical value such as the capacity setting (numerical value setting) or inspection of the proportional valve. An interrupt mode that operates with the setting / inspection program is provided in the control unit of the combustion appliance,
We have proposed a device that switches from the operating mode to the interrupt mode by computer control and automatically performs the operations such as setting the capacity of the proportional valve and the inspection by the program in the interrupt mode.

According to the proposed device, the operation in the interrupt mode is performed according to the numerical value setting / inspecting program, so that the numerical value setting / inspection can be performed accurately.
In addition, the time required for the inspection can be shortened as compared with the manual setting of the ability and the inspection.

However, if the operation mode is switched between the operation mode and the interrupt mode by computer control, the operation mode may be arbitrarily switched by noise of the computer or the like even when the operation mode switching is not necessary. In that case, the combustion operation control of the combustion appliance may not be performed accurately, and the runaway of the combustion appliance may be caused, which is very dangerous.

The present invention has been made in order to solve the above-mentioned conventional problems, and an object thereof is to provide an operation mode switching device for a combustion appliance capable of preventing a malfunction of switching between an operation mode and an interrupt mode. It is in.

[0009]

In order to achieve the above object, the present invention is constructed as follows. That is, in the device of the present invention, the input means of the interrupt mode which operates with an operation command different from the operation mode operated by the operation program of the combustion appliance is connected to the control unit of the combustion appliance, and the operation mode is changed from the operation mode to the interrupt mode by the mode switching signal. A mode switching device for a combustion appliance, which is provided with a mode switching means for switching from an interrupt mode to an operation mode by a mode switching return signal, wherein the mode switching means is connected to a closed loop circuit having a switch. , one of the signals of the open signal of the closed loop due to the off operation of the short signal and switch of the closed loop circuit by the on operation of the switch a mode switching signal, and has a configuration in which the other signal and the mode switching return signal.

[0010] Then, the switch is a hard switch for switching operation by insertion and removal of the pin, the short signal and without the closed loop circuit through the pin insertion, it has an open signal of the closed loop circuit by extraction of the pin, of the burner The control unit and the interrupt mode input means are connected by a signal line through a connector of a plurality of pins, and a set of a predetermined pin on the plug side of the connector and a hole on the socket side into which the pin is fitted is connected to a switch of a closed loop circuit. The input means of the interrupt mode is configured to send the password prior to the operation command of the interrupt mode, and the password and the switch signal are used instead of the mode switching signal of only the switch signal of the closed loop circuit. Switch the combined signal mode It forms a characteristic structure of the present invention that it has a degree.

Further, a memory capable of writing and erasing data by an electric signal is provided in the control unit of the combustion appliance,
A write / erase unit for writing and erasing data to / from this memory is provided, and a mode switching return signal by a switch of a closed loop circuit is used as a data erase command signal to the write / erase unit, and data is stored. The memory is divided into a main data storage area for storing registration data for long-term storage and a sub-data storage area for storing temporary storage data. The addition of means for selectively erasing stored data to the write / erase section is also a characteristic of the present invention.

[0012]

In the present invention having the above construction, the mode switching means is connected with a closed loop circuit having a switch, and a short signal of the closed loop circuit due to an ON operation of the switch and an opening of the closed loop circuit due to a switch OFF operation. One of the signals is used as a mode switching signal to switch the operation mode from the operation mode to the interrupt mode, and the other signal is used as a mode switching return signal to switch the operation mode from the interrupt mode to the operation mode. In this way, since the operation mode switching is performed by the short signal and the open signal of the closed loop circuit, even if some noise or the like occurs in the device, the malfunction of the operation mode switching does not occur due to the noise etc. Accurate operation mode switching is performed.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. The operation mode switching device of the combustion instrument of the present embodiment is different from the operation mode operated by the operation program of the combustion instrument, and different from the operation mode, for example, the numerical setting of the control condition of the combustion instrument and each element constituting the combustion instrument. The interrupt mode is switched to automatically perform inspections and the like. In order to facilitate understanding of the description of the present embodiment, FIG. 3 shows an example of a model of a combustion instrument that is the target of automatic setting / inspection in the interrupt mode. (A) of the figure shows a capacity-switching type water heater, in which the water entering from the water supply pipe 1 is heated by the combustion thermal power of the burner 2 to pass through the hot water heat exchanger 3 to be turned into hot water. The hot water is guided to a desired hot water supply place such as a kitchen through the hot water supply pipe 4.

The control device 5 rotates the combustion fan 7 when receiving a water input signal from the flow rate sensor 6, and opens at least one of the solenoid valve 8, the proportional valve 10 and the capacity switching valves 11a and 11b in the gas supply passage 19. , The igniter electrode 12 is driven to perform point ignition, and after the flame is detected by the frame rod electrode 13, the outlet temperature detected by the outlet temperature sensor 15 is the remote control.
The valve opening amount of the proportional valve 10 is controlled so that the set temperature set by 14 is reached, and at the same time, the rotation control of the combustion fan 7 is performed according to the combustion amount, and the hot water supply operation is controlled. In controlling the hot water supply operation, the control device 5 switches the capacity switching valves 11a and 11b according to the required heat amount.

When the required amount of heat is small, the capacity switching valve 11
When only a is opened, one-sided combustion of the A side of the burner 2 is performed. When the required heat amount is large, the capacity switching valve 11b is further opened to perform multi-sided combustion of the A side and the B side. In the figure, 9 is a fan rotation detection sensor for the combustion fan, 16 is a water temperature sensor, and 17 is a water temperature sensor.
Indicates a water quantity control valve for adjusting the water quantity.

FIG. 3 (b) shows a bath kettle, and the same parts as those of the water heater shown in FIG. 3 (a) are designated by the same reference numerals. This kind of bath can be remote controller 14 etc.
When the reheating operation is commanded, the control device 5 rotates the circulation pump 20 of the reheating circulation pipe 18 to circulate the hot and cold water in the bathtub 21 through the reheating circulation pipe 18. When the running water switch 22 detects the flow of hot water, the control device 5 rotates the combustion fan 7, opens the solenoid valve 8, burns the burner 2 by point ignition, and circulates the hot water circulating through the reheating heat exchanger 23. The water is heated to reheat the hot water in the bathtub 21. And
When the bath temperature detected by the bath temperature sensor 24 reaches the bath set temperature set by the remote controller 14, the reheating operation is stopped.

FIG. 3 (c) shows a composite water heater having a reheating function, and the hot water supply heat exchanger 3 side performs the same operation as shown in FIG. 3 (a) to perform hot water supply operation. Further, on the reheating heat exchanger 23 side, the hot water in the bathtub 21 is reheated by performing the same operation as that of the bath kettle shown in FIG. This hot water supply and reheating operation are performed by the control device 5, which opens the pouring valve 25 such as a solenoid valve to reheat the hot water produced on the hot water supply heat exchanger 3 side to recirculate the circulation line 18 It is equipped with a function to drop water into the bathtub 21 via the water tank, and pouring water when the water level sensor 26 using a pressure sensor or the like reaches the set water level set by the remote controller 14 or the like. The valve 25 is closed to stop the filling of water, and then the circulation pump 20 is started to perform the reheating operation.

FIG. 1 shows the configuration of the essential parts of an operation mode switching device for a combustion instrument according to this embodiment, and FIG. 2 is equipped with the device shown in FIG. The block configuration of the device for setting / inspecting is shown. In FIG. 2, reference numeral 27 denotes a combustion appliance such as a water heater and a bath kettle shown in the model example, and 28 is an automatic setting / comprising microcomputer or personal computer.
The inspection apparatus is shown, and the automatic setting / inspection apparatus 28 is provided with an interrupt control unit 60 which functions as an interrupt mode input means. The interrupt control unit 60 has a function of setting a numerical value of the control condition of the combustion appliance and giving a command for inspection to the combustion control unit 30 of the combustion appliance 27, and includes an interrupt command output unit 31 and a data reading unit 32. A data output unit 33, an interface 34, a mode changeover switch 35, a data determination unit 36, a data correction unit 37, an external command / drive unit 38, an external response detection unit 39, and an informing unit 40,
And a data input section 42.

The interrupt command output unit 31 has a memory 44 and an operation command output unit 46. The memory 44 stores a program for outputting an interrupt operation command for setting control conditions of the burning appliance and inspecting various constituent elements of the burning appliance. In this embodiment, the interrupt operation command is formed by a password and an aggregate of one or more commands.

The password is a signal for informing the start of the operation command, and the command is each component of the combustion instrument, for example, the flow rate sensor 6 of the combustion instrument shown in FIG. 3, the fan rotation detection sensor 9, the frame rod electrode 13, Hot water temperature sensor 1
5, various sensors such as the incoming water temperature sensor 16, the flowing water switch 22, the bath temperature sensor 24, the water level sensor 26, the solenoid valve 8, the proportional valve 10, the capacity switching valves 11a and 11b, the igniter electrode 1
2. Actuators such as the water flow control valve 17, the circulation pump 20, the pouring valve 25, etc. are used as constituent elements, and the operation commands of the respective constituent elements are encoded and identified. In the present embodiment, the commands are They are classified into types.

One type of command is for instructing on / off operation of an operation switch of a remote controller such as a water heater, a bath cooker, and a compound water heater with a reheating function. In contrast, a command for CM01 is given, a switch-off operation command for hot water supply operation is given as CM00, a reheating switch-on operation command for the bathtub remote controller is given as CM11, and an OFF operation is also CM1.
The ON / OFF operation command of the switch of the remote controller is given as a coded command, such as 0.

The second type of command is to cancel a desired step operation of the sequence program (operation program) for operating the combustion appliance. By issuing this command, the combustion operation of the combustion appliance is The predetermined program operation will be canceled,
When the operation inspection of the combustion equipment is performed according to the combustion operation program, unnecessary program operation is omitted and the operation such as inspection can be completed in a short time.

The third type of command is for instructing the compulsory operation of the combustion appliance. For example, the water amount control valve 17 and the pouring valve.
This is a command to forcibly operate the actuators such as 25, and forcibly select and operate operation modes such as hot water supply, reheating, and water filling. The fourth type of command is an operation command for setting the numerical value of the control condition, etc. With this command, for example, the hot water supply temperature is set and the maximum and minimum valve opening drive currents of the proportional valve are set. Or changing the set water level of the water filling, and setting the time such as a timer. The final fifth type of command is to read the detection data of the sensor or the like, or to read the operating state of each component such as the actuator (monitor command). For example, this command causes the tap water temperature sensor 15 or running water to flow. A signal of a sensor such as the switch 22 is read, a remote monitor switch is in an on state or an off state, or the burner is in a combustion state or a combustion stop state.

In this embodiment, a password and one or more of these various commands are aggregated to create an interrupt operation command. The interrupt program stored in the memory 44 of the interrupt command output unit 31 uses the password. It is created by arranging commands in time series using a set of one or more commands at the head, and in the present embodiment, this interrupt program is of an interrupt mode for performing condition setting and inspection of a combustion appliance. It functions as a dedicated program. The operation command output unit 46 arranges interrupt operation commands after the password as the same command regardless of the device type and model and arranges the interrupt operation commands after the password to output the data.
Add to.

The data reading unit 32 reads the unique data (ID data) of the combustion appliance to be set or inspected. This ID data includes, for example, product type, model, hot water supply capacity,
Exhaust variation, gas type, inspection standard value, inspection target item, inspection standard and specification data such as tolerances, etc. This ID data is input by the ID data input unit 41, by keyboard key operation, or by barcode input, Or input by card input such as memory card,
The input data is read by the data reading unit 32, and this read data is added to the interrupt command output unit 31. The data output unit 33 is the interrupt command output unit 31.
Interrupt operation command added from interface 34
Via the communication cable 61 as a communication means to the combustion control unit 30 of the combustion appliance 27.

FIG. 1 shows in detail the connection between the interrupt control unit 60 side and the combustion control unit 30 side of the burner 27.
In this embodiment, a communication cable on the combustion control unit 30 side of the combustion appliance 27 is connected via a plurality of pins (not shown).
The communication cable 61 on the side of the interrupt control unit 60 is connected to the communication cable 61, and the communication cable 61 is formed of a 6-core signal line. The signal line of the first core of the six cores is ground (G
ND) line, the second core line is the clock signal line, and the third core line is the signal line T for command transmission of the operation command.
xD, and the line of the fourth core is the line of the signal line RxD of the response to the command sent from the combustion control unit 30 side to the interrupt control unit 60 side.

The wires of the fifth core and the sixth core of the communication cable 61 are the wires of the closed loop circuit (loop path) 63 through the mode changeover switch 35. In this embodiment, the mode changeover switch 35 is connected to the connector. It is composed of a hard switch consisting of a set pin on the plug side (for example, the interrupt control unit 60 side) and a hole on the socket side (for example, the combustion control unit 30 side of the combustion appliance 27) into which this pin fits. The mode switch 35 is turned on by inserting the pin into the hole on the socket side and the loop circuit 63 is closed, and the mode switch 35 is turned off by pulling out the pin on the plug side from the hole on the socket side. However, the loop circuit 63 is configured to open.

When the mode selector switch 35 is turned on, that is, when the closed loop circuit 63 is short-circuited, this short signal is used as a mode switching signal.
On the combustion control unit 30 side, when the operation mode by the operation of the combustion control operation program is switched to the interrupt mode that operates by the interrupt operation command and the pin is pulled out and the loop circuit 63 is opened and opened, this open signal Is used as a mode switching return signal, and the combustion control unit 30 is configured to switch from the interrupt mode to the operation mode again.

In this way, the closed loop circuit 63 in which the mode changeover switch 35 is interposed is connected to the interrupt control unit 60, and the closed loop circuit by the ON operation of the switch 35 is connected.
The most characteristic configuration of this embodiment is that the short circuit signal of 63 is used as the mode switching signal and the open signal of the closed loop circuit 63 by the switch-off operation is used as the mode switching recovery signal.

The external sensor 43 shown in FIG. 2 is a sensor for inspecting and correcting (calibrating) the sensor used in the combustion appliance. For example, the hot water outlet of the water heater shown in FIG. 3 (a). When the temperature sensor 15 and the flow sensor 6 are inspected, an external temperature sensor is attached to the conduit connected to the hot water supply pipe 4, and an external flow meter is connected to the conduit connected to the water supply pipe 1. It Then, the external command / driving unit 38 issues a command for detecting (reading) the hot water temperature to the external temperature sensor, which is an external sensor, and a command for reading the detected flow rate to the external flow rate sensor. These commands are performed in response to the operation command of the command output from the interrupt command output unit 31, the signal read by the operation of this external command / drive unit 38 is detected by the external response detection unit 39, and the data determination unit Added to 36.

The data determination unit 36 detects the detection signal (the detected temperature and the detected flow rate in the above example) of the external sensor 43 obtained from the external response detection unit 39, and the sensor 47 (in the above example, in the same burner 27) as the detection target. The sensor detection signals of the hot water temperature sensor and the flow rate sensor) are compared using the external sensor 43 as a reference sensor to determine whether or not the sensor 47 used in the combustion appliance 27 is normal. If the difference between the detection value of the sensor 47 used in the combustion appliance 27 and the detection value of the external sensor 43 is a difference within a predetermined allowable range, it is determined to be normal, and if it is outside the allowable range. Judge as defective. Then, when the command of the operation command requests the notification of the determination result, the determination result of the inspection target sensor is displayed on the display unit of the notification unit 40 including the liquid crystal screen and the like. Note that the notification of the notification unit 40 is not limited to screen display, and other forms of notification such as a buzzer and a lamp may be performed as necessary. The notification unit 40 is not necessarily integrated with the inspection device, and the number is not limited to one.

When the command of the interrupt operation command requests data correction, the data correction unit 37 calculates the difference between the detection value of the external sensor 43 and the detection value of the sensor 47 used in the combustion appliance 27. Then, the correction amount of the displacement of the sensor 47 of the combustion appliance with respect to the external sensor 43 is calculated and calculated, and the calculated correction value is supplied to the combustion control unit 30 on the combustion appliance 27 side via the data output unit 33. This correction value is
The data is written in the setting data memory 54 on the side of 30, and the detection value of the sensor 47 is corrected by the correction calculation unit (not shown) on the side of the combustion control unit, and the combustion operation is controlled based on the corrected sensor signal.

The combustion control unit 30 on the combustion appliance 27 side includes a data input unit 48, a main operation control unit 50, a command / drive unit 51,
It has a data output unit 52, a memory clear command unit 53, a setting data memory 54, a monitor signal input / output unit 55, and a writing / erasing unit 58. The data input unit 48 receives an interrupt operation command sent from the interrupt control unit 60 side through the interface 34, and adds it to the main operation control unit 50 and the write / erase unit 58 in accordance with the command request.

The main operation control unit 50 has a built-in operation program for controlling the normal combustion operation of the combustion appliance 27, and controls the combustion operation according to this operation program.

A conversion table 45 is provided in the main operation controller 50.
This conversion table 45 translates and converts the command code of the interrupt operation command into the operation command signal of the actual operation of the component of the combustion appliance. For example, when the code of the command in the operation command is RD40 of the rotational speed reading command of the combustion fan, this code RD40 is translated into an actual operation command signal for detecting the rotational speed of the combustion fan. The conversion table 45 has table data (table data) showing the relationship between the code of each command and the corresponding operation command signal for actual operation. Refer to the table data for the code of the command given as the interrupt program progresses. Then, it is immediately translated into an operation command signal for actual operation. The table data of the conversion table 45 is given as data corresponding to the address configuration of the memory to which the operation program of the main operation control unit 50 is given and the configuration of the control target element such as the actuator used in the instrument. In this case, the interrupt operation command (command) is converted into an actual operation command of a form adapted to each device. In the present specification, the operation command signal means, for example, a command accompanied by driving of a component such as a valve opening command and a command not accompanied by driving such as a data read command. is there.

By the way, in the operation program of the conventional combustion appliance, the operation command of each step of the program is given with the address of the memory as an address. For example, the rotation start command of the combustion fan is given to the address 10 of the memory at the ignition by the igniter electrode. The command is given as an address, such as address 15 in memory. However, in the system in which the address is used as an address unit, the contents of the program are different when the device type and the like are different, so that the operation command of the same component is given to different addresses every time the device type is different. For example, the instruction to start the rotation of the combustion fan is given to address 10 in the memory for some types of equipment, while it is given to address 11 in the other types of equipment. The storage location is different, so
When an interrupt program for inspecting an instrument is to be created, there is a problem in that a different program must be created for each different instrument model or model.

In the burning instrument 27 of this embodiment, in order to solve such a problem, an interrupt program for operation command output is created with the action of each element constituting the burning instrument as a command unit. Therefore, according to the interrupt program for operation command output of the present embodiment, when inspecting combustion appliances and setting numerical values of control conditions, if one interrupt program is prepared, the same inspection will be performed on appliances of different models and the like. It is possible to set the numerical value of the control condition, and by issuing the same command command from the interrupt control unit 60 side to the combustion control unit 30 side, the response operation of the same command can be performed.

In the main operation control unit 50, the mode changeover signal from the mode changeover switch 35, that is, the pin of the plug (not shown) of the hard switch of the operation mode changeover device shown in FIG. 1 is a socket (not shown). When the mode changeover switch 35 is turned on and the closed loop circuit 63 is short-circuited by being inserted into the hole, the operation mode by the operation program is switched to the interrupt mode operated by the interrupt operation command. By this mode switching, the main operation control unit 50 performs operation control according to the command request of the interrupt operation command. On the other hand,
When the main operation control unit 50 is operating in the interrupt mode and the switch-off signal is applied from the mode switch 35, that is, the plug pin of the hard switch is pulled out from the hole of the socket and the mode switch is turned off. Then, the operation mode is switched from the interrupt mode to the operation mode.

The memory clear command unit 53 switches when the switch-off signal (open signal of the closed loop circuit 63) is applied from the mode switch 35, that is, the operation mode of the main operation control unit is switched from the interrupt mode to the operation mode. At this time, a memory clear command for erasing data is output to the writing / erasing unit 58 by using the open signal as a data erasing command signal.

The setting data memory 54 is composed of a non-volatile memory formed by an EEPROM capable of writing and erasing data by an electric signal, and the setting data memory 54 receives an interrupt operation command when operating in an interrupt mode. By the data setting command of the command including
Stores setting data that you want to keep without erasing, that is, the main data storage area that stores registration data for long-term storage, and data such as dummy that is temporarily stored for inspection, that is, temporary storage data. The sub-data storage area is divided. Then, the long-term storage registration data is stored in the main data storage area, and the temporary storage data is stored in the sub-data storage area.

The write / erase unit 58 is the data input unit 48.
In response to the signal applied from the interrupt control unit 60, the operation command of the command sent from the interrupt control unit 60 writes the data to the setting data memory 54, and the memory clear command unit 53 issues a memory clear command. When the data is received, the data in the setting data memory 54 is erased. At this time, in response to the memory clear command from the memory clear command unit 53, the data in the sub data storage area that does not need to be stored and retained is erased.

The controlled element 56 constitutes the combustion appliance 27, for example, the solenoid valve 8 of the device shown in FIG. 3, the proportional valve 10, the capacity switching valves 11a and 11b, the water amount control valve 17, the circulation pump 20.
It means an actuator such as. When the command of the interrupt operation command commands the drive operation of the controlled element, the command / drive unit 51 drives the controlled element 56 according to the command request. For example, when the command of the operation command requests the rotation start of the combustion fan 7, the rotation start of the combustion fan 7 is performed according to this request.

The monitor signal input / output unit 55 detects the sensor to be monitored based on the monitor command of the command included in the operation command.
The detection value of 47 is read, and this read signal is supplied to the data output unit 52 or stored in the setting data memory 54 in response to a command request. The data output unit 52 transmits the monitor signal added from the monitor signal input / output unit 55 to the interrupt control unit 60 side through the communication cable 61 which is a communication means, and performs signal processing according to the command, for example, the data as described above. Data determination by the determination unit 36 and data correction by the data correction unit 37 are performed, and monitor data is displayed on the notification unit 40, for example, by displaying a message.

The operation mode switching device of the present embodiment and the automatic setting / inspecting device equipped with the operation mode switching device are configured as described above. Next, operation examples using these devices will be briefly described. To do. First, the power of the automatic setting / inspection device 28 side and the combustion appliance 27 side is turned on, and the device 28 side and the combustion appliance 27 side are connected by the communication cable 61, whereby
Turn on the mode switch 35. Then, the closed loop circuit due to the ON operation of the mode changeover switch 35.
The combustion control unit 30 switches from the operation mode to the interrupt mode by the mode switching signal using the short signal of 63 as the mode switching signal. The communication cable 61 is connected, for example, by inserting a pin on the plug side of the connector on the interrupt control unit 60 side into a hole on the socket side of the connector on the combustion control unit 30 side of the combustion appliance 27. The changeover switch 35 is turned on.

By advancing the interrupt program in this state, the command for each step operation of the interrupt program starts with the password as the combustion control unit.
It is added to the main operation control unit 50 of 30. Then, the command of the interrupt program is converted into an actual operation command signal by the conversion table 45, and the main operation control unit 50 performs the control operation according to the request of the command to perform the operation state and the control condition of the controlled object element 56 of the combustion appliance 27. For example, the hot water supply temperature of the water heater is set. In this way, the operations required for the inspection and the setting of the numerical values proceed efficiently according to the interrupt program, so that the target control condition setting and the inspection operation are performed extremely efficiently in a short time.

When the pin on the plug side is pulled out from the hole on the socket side, the connection of the communication cable 61 is released and the mode changeover switch 35 of the closed loop circuit 63 is turned off,
The combustion control circuit 30 switches from the interrupt mode to the operation mode by using the open signal of the closed loop circuit 63 resulting from the OFF operation as a mode switching return signal.

According to the present embodiment, as described above, the operation mode switching of the combustion appliance 27 between the operation mode and the interruption mode is performed by inserting / removing the plug side pin and the socket side hole of the connector of the communication cable 61. As a result, the mode changeover switch 35 of the closed loop circuit 63 is operated to perform the operation mode changeover by the short signal and the open signal of the switch 35, so that the operation mode changeover is performed accurately and surely, and due to noise or the like. There is no malfunction, and it is possible to completely prevent malfunctions in switching operation modes. Therefore, the combustor 27 does not run away due to a malfunction in switching the operation mode, and the operation in the interrupt mode and the operation in the operation mode can be stably performed.

In the above automatic setting / inspecting apparatus for combustion equipment, the operation program provided to the main operation control unit 50 of the combustion control unit 30 is used to set numerical values of control conditions without using an interrupt program. Operations such as inspection can be performed. That is, the above device outputs the interrupt operation command from the interrupt command output unit 31,
Since the operation according to the command of the interrupt operation command is performed by the operation control of the main operation control unit 50 on the combustion control unit 30 side, the operation according to the operation program of the main operation control unit is executed by the operation command of the interrupt. The main operation control unit 50 omits unnecessary step operations by outputting a command for executing and a command for canceling unnecessary step operations (step operations that are not necessary for numerical setting and inspection of control conditions) of the operating program. The operation control is performed by the operation program described above, and desired operations such as numerical setting of the target control condition and inspection are performed in a short time by using the shortened operation program.

Further, in the above apparatus, it is possible to perform operations such as numerical setting and inspection of control conditions without using the interrupt program or the operation program of the main operation control section. That is, by issuing an interrupt operation command from the interrupt command output unit 31, the operation corresponding to the command of the interrupt operation command is performed on the combustion control unit 30 side, for example, the hot water supply of the water heater of FIG. If you want to monitor the temperature detected by the temperature sensor 15,
By adding an interrupt operation command with the command for reading the signal of the hot water temperature sensor to the combustion control unit 30 side, the combustion control unit 30 performs an operation according to this command, and the temperature detected by the hot water temperature sensor 15 is notified. It is displayed on the section 40, and this display allows the hot water temperature sensor to be monitored. Further, when it is desired to change the valve opening amount of the water amount control valve 17, by adding a coded variable valve opening amount operation of the water amount control valve 17 to the combustion control unit 30 side as a command, the water amount control valve by the instructed amount. The valve opening amount of 17 is variable.

As described above, when the operation command of each constituent element of the combustion appliance is issued on a one-off basis, the interrupt command external input means (for example, a keyboard, a card, a bar code, a personal computer, etc.) shown in FIG. 2 is used. By inputting a coded command using the input means) 64, this command is added to the combustion control unit 30 side, translated by the conversion table 45, and the operation according to the command can be performed.

As described above, in this embodiment, each constituent element of the combustion device is coded to create a command, and the combustion control unit 30 side addresses the command of the operation of each coded constituent element. Since it has a memory conversion table that converts and translates it into the command of the actual operation of each step of the sequence, even if the model or model of the combustion device is different, different depending on each model or model. It is not necessary to create a dedicated inspection program, and no matter what type and type of combustor, a dedicated program formed by a set of one or more commands that encode each component of the combustor is used. By preparing one program, it is possible to use the program to perform the same operations such as inspections without problems even in combustion devices of different models and models. It made.

Further, since the present embodiment has the above configuration,
It is possible to obtain an effect that a very difficult inspection can be easily performed by the manual method. For example, a freezing prevention heater, a freezing prevention temperature sensor, and a heater drive circuit that turns on the freezing prevention heater when the temperature sensor detects a heater drive start temperature (for example, 0 ° C.) are provided in the combustion instrument, and the combustion prevention is performed. When testing the heater drive circuit of the equipment in the summer, in order to manually check whether the heater drive circuit operates normally, use the dry ice etc. It must be cooled down to a driving start temperature of 0 ° C. or lower, which is very difficult. On the other hand, in the present embodiment, it is only necessary to set the interrupt mode, issue a setting write command of the detection temperature of the freeze prevention temperature sensor, and write and set the temperature to a temperature equal to or lower than the dummy heater drive start temperature. By setting this dummy temperature, the heater drive circuit determines that the freeze prevention temperature sensor has detected the heater drive start temperature and starts heater drive, and this heater drive is used to change the power consumption of the combustion appliance. It is possible to easily detect the normal state of the heater drive circuit by detecting as.

The present invention is not limited to the above-mentioned embodiment, and various embodiments can be adopted. For example, in the above embodiment, when the mode changeover switch 35 is turned on and a short circuit signal of the closed loop circuit 63 is applied, the operation of the main operation control section on the combustion control section 30 side is operated by using the short circuit signal as a mode changeover signal. Although the mode is switched to the interrupt mode, the password and the closed loop circuit 63 are added when the password at the beginning of the interrupt operation command is added in addition to the mode switch 35 being turned on.
It is also possible to use a signal including the short-circuit signal of 1) as a mode switching signal to switch from the operation mode to the interrupt mode when this signal is added. In this way, by using the signal obtained by combining the password and the short circuit signal of the closed loop circuit 63 as the mode switching signal, it is possible to more completely prevent the malfunction of switching from the operation mode to the interrupt mode.

Further, in the above embodiment, the short circuit signal of the closed loop circuit 63 due to the ON operation of the mode changeover switch 35 is used as the mode changeover signal,
Although the open signal of the closed loop circuit 63 due to the OFF operation of 35 is used as the mode switching return signal, conversely, the open signal of the closed loop circuit 63 due to the OFF operation of the mode switching switch 35 is used as the mode switching signal to close the loop with the ON operation of the switch 35. The operation mode of the water heater 10 may be switched by using the short signal of the circuit 63 as the mode switching return signal.

Further, in the above-mentioned embodiment, the setting data memory unit 54 of the combustion appliance 27 is formed by the EEPROM, but the setting data memory unit 54 is capable of writing and erasing data such as RAM by an electric signal. It may be formed by a memory. Further, the memory storing the registration data for long-term storage may be formed by a non-volatile memory in which data can be written by an electric signal or the like.

Further, in the above embodiment, the setting data memory 54 is constituted by a non-volatile memory in which data can be written and erased by an electric signal, and the data to be stored and the data to be erased later are stored in the non-volatile memory. However,
The setting data memory is composed of non-volatile memory and volatile memory such as RAM. Setting data that is not erased is stored in the non-volatile memory, and data that will be erased later is stored in the volatile memory. Unnecessary data stored in the RAM or the like may be automatically deleted when the power is turned off after the operation is completed.

Further, in the above embodiment, the writing / erasing unit 58 is provided in the combustion control unit 30 of the burning appliance 27, and the writing / erasing unit is
Although data was written and erased in the setting data memory 54 by 58, the write / erase unit 58 was omitted and the data input unit was omitted.
Data may be directly written to the setting data memory 54 by 48, and the data in the setting data memory 54 may be directly erased by the memory clear command unit 53.

Further, in the above embodiment, the setting data memory section 54 of the combustion appliance 27 is divided into a main data storage area for storing registration data for long-term storage and a sub-data storage area for storing temporary storage data. Therefore, the setting data memory 54 does not necessarily have a main data storage area and a sub data storage area, although a means for selectively erasing the stored data in the sub data storage area by the open signal of the closed loop circuit is added to the write / erase section. The area is not always divided. In this case, the same effect as that of the above-described embodiment can be obtained by, for example, hitting individual data one by one from the interrupt control unit 60 and selectively instructing the data to be erased. However, as in the above embodiment, if the area is partitioned and the writing / erasing section 58 or the data clear command section 53 is provided with a means for selectively erasing the stored data in the sub data storage area, long-term storage is possible. The registration data and the temporary storage data are very clearly distinguished, and in order to ensure that the data writing and erasing operations are performed accurately and quickly, the above areas are distinguished,
It is desirable to add the selective data erasing means to the writing / erasing unit 58 and the like.

Further, in the above embodiment, the combustion control unit 30 side of the combustion appliance 27 and the interrupt control unit of the automatic setting / inspection device 28 are used.
Although the communication cable 61 for connecting the 60 is formed of 6-core signal lines, the communication cable 61 is not necessarily formed of 6-core signal lines, and may be formed of signal lines other than 6-cores.

Further, in the above embodiment, the interrupt control unit 60 side of the automatic setting / inspecting device 28 and the combustion control unit 30 of the combustion appliance are provided.
Although the side and the side are separated and formed as a separate device, the interrupt control unit 60 may be formed in the same control device as the combustion control unit 30 of the combustion instrument. In this case, the combustor has a built-in operation mode switching device, and the communication cable is omitted.

When a combustion instrument having a built-in operation mode switching device is constructed in this way, for example, the mode switching switch 35 of the closed loop circuit 63 is a hard switch that operates by inserting and removing the pin, and the closed loop is formed by inserting the pin. No short signal for the circuit 63, no open signal for the closed loop circuit 63 by pulling out the pin, one of the open and short signals is the mode switching signal and the other is the mode switching return signal. You can also By using the mode changeover switch 35 as a hard switch in this way, the same effect as that of the above-described embodiment can be obtained, and the malfunction of the operation mode changeover can be prevented.

Further, the communication cable 61 is omitted, and FIG.
As shown by the broken line, the interrupt controller 60 side and the combustion controller
Connect the 30 side with remote control 57 as an intermediary
57 has the function of the communication cable 61 excluding the function of the closed loop circuit 63, the closed loop circuit 63 is provided on the combustion appliance 27 side or the automatic setting / inspection device 28 side, and the operation mode and interruption are performed by the on / off operation of the closed loop circuit 63. It is also possible to perform mode switching of modes and perform communication between the control units 30 and 60 via the remote controller 57 to perform operations such as setting of control conditions and inspection.

The mode changeover switch 35 is not necessarily a hard switch, but may be a computer-controlled changeover switch as long as it is provided in the closed loop circuit 63. Even in this case, according to the present invention, since the operation mode switching is performed by the short signal and the open signal of the closed loop circuit 63, even if some noise is generated in the computer, the operation mode switching is performed by the noise. No malfunction occurs, and the same effects as those of the above-described embodiments can be obtained.

Further, in the above embodiment, the operation command of the interrupt is formed by the aggregate of the password and the command, but the password is omitted, and the operation command is made by one or more commands in which each component of the combustion appliance is encoded. May be configured.

Furthermore, the command does not necessarily have to be coded and given, but may be given in the code form of the actual operation / command signal of the component of the combustion appliance from the beginning. In this case, the command conversion table can be omitted because it is not necessary to translate the command code into the actual operation / command signal. However, when the command is encoded, a simple code can be used.
43 etc. makes it easy to input commands from the outside.

Further, in the above embodiment, the conversion table 45
Although the above is provided on the combustion control unit 30 side, the conversion table 45 may be provided on the interrupt control unit 60 side.

Furthermore, in the above embodiment, the combustion appliance shown in FIG. 3 was described as a model, but the operation mode switching device of the present invention switches from the operation mode to the interrupt mode to perform numerical setting and inspection of the device. The combustor is not necessarily limited to the model shown in FIG. 3, but is applicable to various other combustor such as a combustion type heater, air conditioner, and air conditioner.

[0068]

According to the present invention, the operation mode and the interruption mode of the combustion appliance are switched by the short signal and the switch off operation due to the on operation of the switch provided in the closed loop circuit of the operation mode switching device. Since the operation is performed by the open signal, even if some noise or the like occurs in the device, the noise does not cause the operation mode switching device to malfunction, and the operation mode switching malfunction can be prevented. Therefore, it is possible to prevent the combustor from running out of control due to an erroneous operation in switching the operation mode, and the combustor can be safely operated in the operation mode and the interrupt mode.

Further, according to the present invention in which the mode switching switch provided in the closed loop circuit is constituted by a hard switch for performing a switching operation by inserting / removing a pin of a connector or the like, according to the present invention, the switching operation of the switch is performed by a worker or the like. It is performed only when an operation is performed, and it is possible to more completely prevent malfunction of switch switching due to noise or the like.

Further, according to the present invention, the interrupt mode input means sends the password prior to the operation command in the interrupt mode, and the mode switching signal is a signal obtained by combining the password and the switch signal of the closed loop circuit.
The switching from the operation mode to the interrupt mode is not performed unless both the password and the short signal are added together. Therefore, it is possible to completely prevent the malfunction of the switch.

Further, the control unit of the burning appliance is provided with a memory capable of writing and erasing data by an electric signal, and a writing and erasing unit for writing and erasing data to and from this memory. According to the present invention, the mode switching return signal by the switch is used as a data erase command signal to the write / erase unit. For example, when the freeze prevention temperature sensor is inspected, a dummy temperature of 0 ° C. or less is used by the write / erase unit. If the data is written and set in the memory, the burner can be operated by the dummy data and the inspection in the interrupt mode can be performed.If the dummy data is erased when switching from the interrupt mode to the operation mode after the inspection, the burner can be used. After that, normal operation will be performed, and in this way, operation in the operation mode Input data and distinguishes between input data during operation in the interrupt mode, it is possible to perform a more wider inspection of.

Further, the memory for storing the above data is divided into a main data storage area for storing registration data for long-term storage and a sub-data storage area for storing temporary storage data. According to the present invention in which means for selectively erasing the stored data in the sub-data storage area by the mode switching return signal is added to the write / erase unit, temporary stored data such as dummy data and registered data for long-term storage can be extremely saved. By clearly distinguishing, the data write and erase operations can be performed reliably and accurately.

[Brief description of drawings]

FIG. 1 is a block diagram of essential parts showing an embodiment of an operation mode switching device for a combustion appliance according to the present invention.

FIG. 2 is a block configuration diagram showing an automatic setting / inspecting device for a combustion appliance, which is provided with the operation mode switching device of the embodiment.

FIG. 3 is an explanatory diagram showing a model example of various combustion appliances which are targets of numerical setting of control conditions and inspection.

[Explanation of symbols]

27 Burning appliances 28 Automatic setting / inspection equipment 30 Combustion control unit 31 Interrupt command output section 35 Mode selector switch 50 Main operation controller 54 Setting data memory 58 Writing / erasing section 60 Interrupt control block 63 closed loop circuit

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiko Sumida, 3-4 Fukamidai, Yamato-shi, Kanagawa Stock company, Gaster (72) Inventor, Nobuhiro Tsuchiya 3-4, Fukamidai, Yamato-shi, Kanagawa Stock company In Gaster (72) Inventor Yoshihiko Tanaka, 3-4 Fukamidai, Yamato-shi, Kanagawa Stock Company In Gaster (72) Inventor Takeaki Kawaguchi, 3-4 Fukamidai, Yamato-shi, Kanagawa In-house Gaster (56) Reference Documents JP-A 5-288339 (JP, A) JP-A 2-197716 (JP, A) JP-A 5-40501 (JP, A) JP-A 4-347413 (JP, A) JP-A 4- 68216 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) F23N 5/24 F23N 5/00 F24H 1/10 G05B 9/02

Claims (7)

(57) [Claims] 1. An input device of an interrupt mode which operates with an operation command different from an operation mode operated by an operation program of a combustion appliance is connected to a control unit of the combustion appliance, and is switched from the operation mode to the interrupt mode by a mode switching signal, A combustion appliance operation mode switching device comprising a mode switching means for switching from an interrupt mode to an operating mode in response to a mode switching return signal, wherein the mode switching means is connected to a closed loop circuit having a switch. of one of the signals of the open signal of the closed loop circuit and mode switching signal according to the short signal and switches off the operation of the closed loop due to the on operation, and the other signal and the mode switching return signal, the switch moving by said switch disconnecting the pin
It consists of a hard switch that performs
Is a closed loop circuit short signal, and the pin is pulled out.
Operation mode switching device of combustion instrument to open signal of the closed loop circuit by the teeth. 2. The control unit of the combustion apparatus and the interrupt mode input means are connected by a signal line through a connector having a plurality of pins, and a predetermined pin on the plug side of the connector and a socket side into which the pin is fitted. operation mode switching device of a combustion device of claim 1, wherein the set of holes has a hard switch closed-loop circuit. 3. The interrupt mode input means is configured to send a password prior to an interrupt mode operation command,
The signal for combining the password and the signal from the switch is used as the mode switching signal instead of the mode switching signal for only the switching signal of the closed loop circuit.
Operation mode switching device 2 SL placing the burner. 4. A luck operated by a combustion appliance operation program.
Interrupt mode that operates with an operation command different from the operating mode
The input means of the
Switching from operation mode to interrupt mode
Change, and interrupt mode by the mode switching return signal
Equipped with a mode switching means to switch from to operating mode
An operating mode switching device for a combustion appliance,
A closed loop circuit with a switch for the mode switching means
Is connected, and the
Closed due to short circuit signal and switch off operation
Mode switching of one of the open signals of the loop circuit
Signal and the other signal as the mode switching return signal.
And an input unit of the interrupt mode is configured to send a password prior to the operation instruction of the interrupt mode, the closed-loop circuit of a switch signal only mode switching signal to the place of the password and signal the mode switching signal obtained by combining the signals by switch the operation mode switching device between the combustion equipment. 5. The control unit of the combustion appliance is provided with a memory capable of writing and erasing data by an electric signal, and a writing and erasing unit for writing and erasing data in the memory, and a closed loop circuit. 5. The mode switching return signal by the switch of claim 1 is used as a data erasing command signal to the writing / erasing unit.
An operation mode switching device for a combustion instrument according to item 1. 6. A fleet operated by a combustion appliance operating program.
Interrupt mode that operates with an operation command different from the operating mode
The input means of the
Switching from operation mode to interrupt mode
Change, and interrupt mode by the mode switching return signal
Equipped with a mode switching means to switch from to operating mode
An operating mode switching device for a combustion appliance,
A closed loop circuit with a switch for the mode switching means
Is connected, and the
Closed due to short circuit signal and switch off operation
Mode switching of one of the open signals of the loop circuit
Signal and the other signal as the mode switching return signal.
And a memory erasable and writing data by an electrical signal to the control unit of the burner, is provided with a write erase unit for erasing and writing of data to the memory, switching the closed loop circuit wherein the mode switching return signal by the operation mode switching device of a data erase command signal and the combustion device to the write erase unit. 7. A memory for storing data is divided into a main data storage area for storing registration data for long-term storage and a sub-data storage area for storing temporary storage data. 7. The operation mode switching device for a combustion instrument according to claim 5, wherein a means for selectively erasing the stored data in the sub data storage area in response to the switching return signal is added to the writing / erasing unit.