JPH07310929A - Inspecting device for combustion apparatus - Google Patents

Abstract

PURPOSE:To provide an inspection device for a combustion apparatus to perform accurate and efficient inspection of the constituting elements of the combustion apparatus. CONSTITUTION:A combustion control part 30 and an inspection device 28 of a combustion apparatus 27 are interconnected through a communication means. An operation command for inspection is outputted from an inspection command output part 31 of an inspection control part 60. An inspection operation command is formed in such a manner that one or more commands by which the constituting elements of the combustion apparatus 27 are caused to form respective codes are aligned. A state monitor command is outputted from the inspection command output part 31, information on the operation states of various sensor 47 and an element 56 to be controlled, such as an actuator, is fetched from the combustion control part 30 side and stored at state monitor memory part 64. An abnormality diagnosing part 65 reads various containing information on the sensor 47 and the element 56 to be controlled and information is compared with another information to diagnose abnormality of the constituting element.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for inspecting a combustion appliance such as a hot water heater, a bathtub or the like, which automatically diagnoses an abnormal state of operation of the combustion appliance.

[0002]

2. Description of the Related Art A conventional general combustion appliance has a failure judgment function inside the appliance, and when some basic abnormality occurs during the combustion operation according to a normal operation program, An internal abnormality determination unit detects this and outputs an error signal, and an error is displayed on a display unit such as a remote controller.

[0003]

However, it can be known that an abnormality has occurred in the burning instrument since the conventional burning instrument merely displays an error message when an abnormality occurs. It was very difficult to determine the cause of the abnormality because it was not possible to determine if any abnormality occurred in the component.

In addition, the conventional device can only judge a simple and basic operation abnormality such as a case where the wire is disconnected due to a basic abnormality, for example, a failure of the hot water discharge thermistor (outflow temperature sensor). Today, when advanced combustion control is required, and the device configuration has become more sophisticated and complex, the conventional abnormality determination function is not sufficient, and there is a failure determination device that can sufficiently cope with sophisticated equipment. Was wanted.

The present invention has been made to solve the above problems, and an object thereof is an apparatus for inspecting a combustion appliance capable of automatically and accurately diagnosing an abnormal portion in the operating state of the combustion appliance. To provide.

[0006]

In order to achieve the above object, the present invention is constructed as follows. That is, the combustion appliance inspection device of the present invention is provided with an inspection controller connected to the combustion controller of the combustion appliance, and this inspection controller.
An inspection command output unit that encodes each component of the combustion appliance and outputs an operation command for inspection composed of one or more commands to the combustion control unit, and a combustion control unit that controls combustion when the inspection operation command is output. Of the operating state including at least one of the sensor and the actuator of the combustion appliance according to the state monitor command from the inspection command output unit, and the mode switching unit for switching from the operation mode operating according to the operation program to the inspection mode operating according to the inspection operation command. It is characterized by having a state monitor memory section for storing monitor information and an abnormality diagnosing section for diagnosing an abnormality of a component of a combustion appliance based on the stored information in the state monitor memory section.

Further, elements are added to the above configuration, and when an error signal is output from the combustion instrument, the monitor information before the error signal is output before and after the error signal is output to the state monitor memory section as a center. A memory save command unit that stores and saves information and monitor information after error signal output is provided, and the abnormality diagnosis unit is based on the data at the time of error signal output and the data before and after error signal output that are stored in the status monitor memory unit. It is also a feature of the present invention that the configuration is made to perform abnormality diagnosis of the constituent elements.

Further, it is a characteristic configuration of the present invention that the inspection control section is formed in the combustion appliance, or that the inspection control section is formed in a device separate from the combustion appliance.

[0009]

In the present invention having the above-described structure, when inspecting each component of the combustion appliance, the operating state of the combustion appliance is switched from the operation mode to the inspection mode by the mode switching unit, and the inspection control is performed in this inspection mode state. The status monitor command is output from the inspection command output part of the part. By this command, the combustion control unit side fetches the information on the operating state of the actuator and the sensor of the combustion appliance according to the command, and stores the fetched information in the state monitor memory unit. The abnormality diagnosing unit reads out the information stored in the state monitor memory unit to determine the operating state of the actuator and the interrelationship of the sensors,
Comprehensive judgment of changes over time to diagnose abnormalities in the constituent elements of the combustion appliance.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. The apparatus for inspecting a combustion appliance of this embodiment monitors the operating state of each element constituting the combustion appliance and automatically performs an inspection based on the monitor information. Hereinafter, in order to facilitate understanding of the description of the present embodiment, an example of a model of a combustion appliance to be inspected is shown in FIG. (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 it receives a water input signal from the flow rate sensor 6, and turns on the solenoid valve 8 in the gas supply passage 19, the proportional valve 10, and at least one of the capacity switching valves 11a and 11b 11a. Open it, drive the igniter 98 to ignite it, and after the flame is detected by the frame rod electrode 13, the hot water temperature detected by the hot water 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 heat amount 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. 4 (b) shows a bath kettle, in which the same parts as those of the water heater shown in FIG. 4 (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. 4 (c) shows a combined water heater having a reheating function, and the hot water supply heat exchanger 3 side performs the same operation as shown in FIG. 4 (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, but this equipment opens the pouring valve 25 such as a solenoid valve to open the hot water produced on the hot water supply heat exchanger 3 side to reheat 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 block construction of the inspection apparatus of this embodiment together with the construction of the combustion equipment. In the figure, reference numeral 27 indicates a burner such as a water heater or bathtub shown in the model example, and 28 indicates an inspection device composed of a microcomputer, a personal computer or the like. The inspection device 28 is provided with an inspection control unit 60. The inspection control unit 60 has a function of giving a command for inspecting the combustion appliance to the combustion control unit 30 of the combustion appliance 27, and includes an inspection command output unit 31, a data reading / writing unit 32, and a data output unit 33. , Interface 34, mode changeover switch 35 as a mode changeover unit, data determination unit 36, and data correction unit
37, an external command / driving unit 38, an external response detection unit 39, a notification unit 40, a data input unit 42, and a state monitor memory unit 64.
And an abnormality diagnosis unit 65.

The inspection command output unit 31 has a memory 44 and an operation command output unit 46. The memory 44 stores a program for outputting an inspection operation command for setting control conditions of the combustion appliance and inspecting various constituent elements of the combustion appliance. In this embodiment, the inspection 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. 4, the fan rotation detection sensor 9, the frame rod electrode 13, Hot water temperature sensor 1
5, various sensors such as inlet water temperature sensor 16, running water switch 22, bath temperature sensor 24, water level sensor 26, solenoid valve 8, proportional valve 10, capacity switching valves 11a and 11b, igniter 98, water amount control valve 17, circulation The actuators such as the pump 20 and the hot water supply valve 25 are used as constituent elements, and the operation commands of the respective constituent elements are coded and identified.
There are two 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. It is given as a command for CM01, and the switch-off operation command for hot water supply operation is CM00.
Then, the on / off operation command of the remote controller switch is given as a coded command, such as the command for supplying the reheating switch of the bathtub remote controller is given by CM11 and the OFF operation is also given by CM10.

The second type of command is to cancel a desired step operation in the sequence program (operation program) for operating the combustion appliance, and by issuing this command, the combustion operation of the combustion appliance is canceled. 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 to instruct the compulsory operation of the combustion appliance. For example, the water amount control valve 17 or 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 (state monitor command). For example, this command is used to output the hot water temperature sensor.
It is possible to read the signals from sensors such as 15 and the flow rate sensor 6, check whether the remote control switch is in the ON state or the OFF state, or whether the burner is in the combustion state or in the combustion stop state. Done.

In this embodiment, a password and one or more of these various commands are aggregated to create an inspection operation command. The program stored in the memory 44 of the inspection command output unit 31 uses the password as the head. Is created by arranging one or more commands in chronological order,
In this embodiment, this program functions as an inspection-dedicated program for inspecting combustion appliances. The operation command output unit 46 arranges the inspection operation commands given to the inspection program after the password and adds them to the data output unit 33.

The data reading / writing unit 32 reads the unique data (ID data) of the combustion appliance to be inspected. The ID data includes, for example, specification data such as product type, model, hot water supply capacity, exhaust variation, gas type, inspection standard value, inspection item, inspection standard and tolerance, and the like, and this ID data is the ID data input unit 41. The input data is read by the data reading / writing unit 32, and the read data is added to the inspection command output unit 31 by the key operation of the keyboard, the barcode input, or the card input of the memory card. Has been. The data output unit 33 transmits the inspection operation command added from the inspection command output unit 31 via the interface 34 and the communication cable 61 as a communication means to the combustion control unit 30 of the combustion appliance 27.
In addition to.

FIG. 2 shows the details of the cable connection between the inspection control unit 60 side and the combustion control unit 30 side of the combustion appliance 27. In this embodiment, a 6-core signal line is used as the communication cable, the first core signal line of these 6 cores is a ground (GND) line, and the second core line is a clock signal line. The third core wire is the signal line TxD for command transmission of the operation command, and the fourth core wire is the signal line RxD for the response to the command sent from the combustion control unit 30 side to the inspection control unit 60 side. The lines of the fifth core and the sixth core are lines of a loop path via the mode changeover switch 35. In this embodiment, the mode changeover switch 35 is constituted by a hard switch, and a pin is inserted. As a result, the mode changeover switch 35 is turned on and the loop path is closed.

When the mode change switch 35 is turned on, that is, when the loop path is short-circuited, the combustion control section 30 operates in the inspection mode from the operation mode based on the operation of the combustion control operation program to the inspection operation command. It is configured to switch from the inspection mode to the operation mode when the pin is extracted and the loop path is opened and opened.

The external sensor 43 shown in FIG. 1 is a sensor for inspecting and correcting (calibrating) the sensor used in the combustion appliance. For example, tap water from the water heater shown in FIG. 4 (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 inspection command output unit 31, the signal read by the operation of the external command / driving 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 or 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 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 or 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 or lamp may be provided 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 inspection operation command requests the correction of the data, the data correction unit 37 detects the external sensor 43.
The difference between the detection value of the sensor 47 used in the combustion appliance 27 and the detection value of the sensor 47 used in the combustion appliance 27 is calculated, and the correction amount of the deviation of the sensor 47 of the combustion appliance with respect to the external sensor 43 is calculated and calculated. It is supplied to the combustion control unit 30 on the combustion appliance 27 side via the data output unit 33. This correction value is written in the setting data memory 54 on the combustion control unit 30 side, the detection value of the sensor 47 is corrected by the correction calculation unit (not shown) on the combustion control unit side, and based on this corrected sensor signal. The combustion operation is controlled.

The state monitor memory unit 64 is, for example, EEPRO.
It is configured by a non-volatile memory such as M, and when a command of a state monitor command is issued from the inspection command output unit 31, the detection value of each sensor 47 of the combustion appliance 27 and the control target element
Stores 56 operating status information. The combustion appliance sensor 47 is the various sensors used in the appliance as described above,
Flow sensor 6, fan rotation detection sensor 9, frame rod electrode 13, hot water temperature sensor 15, incoming water temperature sensor 16, running water switch 22, bath temperature sensor 24, water level sensor 26, etc. Various sensors are included.

Further, the controlled element 56 constitutes the combustion appliance 27, for example, the solenoid valve 8 and the proportional valve of the device shown in FIG.
10, the capacity switching valves 11a and 11b, the water amount control valve 17, the actuator such as the circulation pump 20, and various switches. Each time the state monitor command is output, the state monitor memory unit 64 sequentially stores information on the operating states of the components of the combustion appliance of the various sensors 47 and the controlled element 56 in the memory, and new information is stored. Every time it is stored, the oldest information is deleted one after another.

FIG. 3 shows an example of data stored in the status monitor memory unit 64. (A) of the figure is information indicating various operating states of various switches and actuators, and the numerical value 1 of each bit signal indicating the state of each component indicates an on state (operating state). The others are in the off state.

Further, (b) of the figure shows a bath temperature sensor 24 and a water level sensor 26 which are taken in by the command of each command.
9 shows an example of stored information of sensor detection values of the hot water temperature sensor 15 and the like.

The abnormality diagnosis section 65 is the state monitor memory section.
The data of each constituent element stored in 64 are compared with each other to diagnose the abnormality of the constituent elements of the combustion appliance.
For example, it is confirmed that the reheating switch is turned on, the reheating burner is in a burning state, the circulation pump is turned on, and the bath level is set to the set water level by the water level sensor. When the bath temperature sensor does not detect the temperature rise with the passage of time in the above state, it is determined that the bath temperature sensor is abnormal. The diagnosis result of the abnormality diagnosis unit 65 is notified to the notification unit 40 when the notification command is requested by a command, and when the external transfer writing of the abnormality diagnosis result is commanded by the command, the diagnosis result of the abnormality diagnosis unit 65 is displayed. The diagnosis result is written in the memory card or the like set in the ID data input unit 41 via the data reading / writing unit 32.

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 section 52, a memory clear command section 53, a setting data memory 54, and a monitor signal input / output section 55.
The data input unit 48 receives the operation command of the inspection sent from the inspection control unit 60 side through the interface 34, and outputs the operation command according to the command request to the main operation control unit.
50 and setting data memory 54.

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.
The conversion table 45 translates and converts the code of the command of the inspection operation command into the operation command signal of the actual operation of the component of the combustion appliance. For example, when the command code of the operation command is RD40 of the combustion fan rotation speed reading command, this code RD40 is translated into an actual operation command signal for detecting the rotation speed of the combustion fan. The conversion table 45 has table data (table data) indicating 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 inspection 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. Cage, inspection operation command (command)
Is converted into a working operation command of a form adapted to each device. In the present specification, the operation command signal may be, for example, a command that involves driving of a component, such as a valve opening command, or a command that does not involve 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 inspection program for inspecting an instrument is to be created, there is a problem that a different program must be created for each different instrument model or model.

In the present embodiment, in order to solve such a problem, an interrupt inspection program for outputting an operation command is created by using the operation of each element constituting the combustion appliance as a command. Therefore, according to the interrupt command inspection program for operation command output of the present embodiment, when inspecting combustion appliances, if one inspection program is prepared, it is possible to perform the same inspection on appliances of different models, etc. Further, by issuing the same command command from the inspection control unit 60 side to the combustion control unit 30 side, the response operation of the same command can be performed.

The main operation control unit 50 receives a mode switching signal from the mode switching switch 35, that is, when a pin is inserted into the hard switch shown in FIG. 2 and the mode switching switch 35 is turned on to short-circuit the loop path. Switching from the operation mode according to the operation program to the inspection mode that operates according to the inspection operation command is performed. By this mode switching, the main operation control unit 50
Performs operation control according to the command request of the inspection operation command. On the other hand, while the main operation control unit 50 is operating in the inspection mode, when the switch-off signal is applied from the mode switch 35, that is, the pin of the hard switch is pulled out and the mode switch is turned off. Then, the operation mode is switched from the inspection mode to the operation mode.

The memory clear command section 53 stores data in the setting data memory 54 when a switch-off signal is applied from the mode changeover switch 35, that is, when the operation mode of the main operation control section is switched from the inspection mode to the operation mode. Outputs a memory clear command.

The setting data memory 54 is composed of a non-volatile memory such as an EEPROM that can be written and erased by an electric signal, and the setting data memory 54 is used for the data of the command included in the inspection operation command during the operation in the inspection mode. In accordance with a setting command, setting data that should be retained without being erased or data that is temporarily stored for inspection is stored. Then, when the memory clear command is issued from the memory clear command unit 53, the data that does not need to be stored and retained is erased.

When the command of the inspection operation command instructs the drive operation of the controlled object element 56,
The controlled element 56 is driven 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 reads out the detection value of the sensor 47 to be monitored based on the command of the state monitor of the command, and also takes in the information of the operating state of the controlled element 56 to be monitored, and these sensors 47 are read. And controlled elements
The information of 56 is supplied to the data output unit 52. Data output section 52
The inspection control unit 60 transmits the monitor signal applied from the monitor signal input / output unit 55 through the communication cable 61 which is a communication means.
Signal processing according to the command, for example, data determination by the data determination unit 36 and data correction by the data correction unit 37 as described above are performed, and monitor data is displayed on the notification unit 40, for example, a message is displayed. Displayed by. Further, the monitor information of the sensor 47 and the controlled element 56 is stored in the state monitor memory section 64, and the stored data is used to make the abnormality diagnosis of the components of the combustion appliance in the abnormality diagnosis section 65 as described above.

Note that the combustion appliance 27 has a well-known abnormality determination function similar to the conventional example, and when an abnormality is determined during normal combustion operation, an error signal is output from the error output section 49 and an error display is displayed on the remote controller or the like. It is supposed to be done.

This embodiment is constructed as described above,
Next, an operation example of the inspection using the apparatus of this embodiment will be briefly described. First, when an error message is displayed on the combustion appliance 27 side, the communication cable 61 connects the inspection device 28 side and the combustion appliance 27 side.
Using the connector, connect it detachably with the connector, turn on the power supply of the device 28 side and the combustion appliance 27 side, and switch the mode.
By turning on 35, the combustion control unit 30 switches from the operation mode to the inspection mode. By advancing the inspection program in this state, the command for each step operation of the inspection program with the password at the head is sent to the combustion control unit 30.
Is converted into an actual operation command signal by the conversion table 45. The main operation control unit 50 performs an operation according to the command request and sends the response result to the inspection device 28 side.

In the present embodiment, the command of the state monitor command is issued at a predetermined timing, for example, every 1 second or every 10 seconds in the course of the inspection, and the sensor 47 of the burner 27 is used.
The state of the control target element 56 is monitored and stored and accumulated in the state monitor memory unit 64. Then, this stored and accumulated state monitor information is read by the abnormality determination unit 65 and information analysis is performed to identify the abnormality of the component of the combustion appliance that caused the error, and the inspection result is displayed on the notification unit 40. It

Therefore, at a glance at the display of the notification unit 40, the abnormal portion is found, and the worker can take appropriate repairs or replace parts.

By the way, in the apparatus of the present embodiment, it is possible to perform a desired operation without using the inspection-dedicated program. That is, by issuing the inspection operation command from the inspection command output unit 31, the operation according to the command of the inspection operation command is performed on the combustion control unit 30 side. Utilizing this, for example, when it is desired to monitor the temperature detected by the hot water outlet temperature sensor 15 of the water heater shown in FIG.
By adding a signal read command of the hot water temperature sensor to the combustion control unit 30 side, the combustion control unit 30 side performs an operation according to this command, that is, a monitoring operation of the temperature detected by the hot water temperature sensor 15, and this monitor temperature Is displayed on the notification unit 40, and the temperature detected by the hot water temperature sensor can be known from this display. Further, when it is desired to change the valve opening amount of the water amount control valve 17, by adding the valve opening amount variable operation in which the water amount control valve 17 is encoded to the combustion control unit 30 side as a command,
The opening amount of the water amount control valve 17 is changed by the instructed amount.

As described above, when the operation command of each constituent element of the combustion appliance is issued on a one-off basis, the inspection command external input means (for example, keyboard, card, bar code, personal computer, etc.) shown in FIG. 1 is used. It suffices to input a coded command using the input means) 63, and this input command is added to the combustion control unit 30 side, translated by the conversion table 45, and operations such as inspection according to the command are performed. .

As described above, in this embodiment, each constituent element of the combustion appliance is encoded to create a command, and the combustion control unit 30 side addresses the encoded operation command of each 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 appliance 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 burner, a dedicated burner that is formed by a set of one or more commands that encode each component of the burner By preparing one program or by issuing a single command for an abnormal command to be inspected, the same inspection can be performed even for combustion appliances of different models and models. So that the it can be carried out without hindrance.

Further, in this embodiment, by issuing a state monitor command from the inspection command output section 31 side, various sensors 47
And necessary state information of the controlled object element 56 are read out at the same time and stored in the state monitor memory section 64. Based on the stored information, the abnormality determination section 65 determines the operating state of the constituent elements of the combustion appliance by each sensor or each. It is possible to compare the operating status information of the actuators with each other and make a comprehensive judgment to perform abnormality diagnosis.In addition, by issuing status monitor commands at predetermined time intervals, the status monitor information can It is sequentially captured and stored in the state monitor memory unit 64. By performing the abnormality diagnosis by further considering the temporal change of this state monitor information, that is, the change over time, the accuracy and reliability of the abnormality diagnosis can be improved. Will be further enhanced.

Next, another embodiment of the present invention will be described. This embodiment is characterized in that a memory save command section 62 is added to the diagnosis control section 60 as shown by the one-dot chain line in FIG.
This memory save command section 62 is an error output section 49 of the combustion appliance 27.
When an error signal is output from, the status monitor information of the sensor 47 of the combustion appliance 27 and the controlled element 56 at the time of error signal output is stored in the status monitor memory unit 64, and then for 1 second, Alternatively, the state monitor information after the error signal is output is stored and accumulated in the state monitor memory unit 64 at a predetermined timing such as 10 seconds. At the time of error signal output, the state monitor information before the error signal is output is already stored in the state monitor memory unit 64. Every time one state monitor information is stored after the error signal is output, the state monitor information before the error signal is output. They are erased one by one from the oldest side. The memory save command unit 62 grasps the accumulated amount of the previous data (information) and the accumulated amount of the subsequent data centering on the time of outputting the error signal, and when the accumulated amounts of both are equal (even when they are almost equal, Stop the storage of status monitor information.

By this storage stop, the status monitor memory unit
The state of the state monitor information at the time of outputting the error signal is centered in 64, and the state monitor information before outputting the error signal and the state monitor information after outputting the error signal are stored in the same amount before and after that.

In this state, the abnormality diagnosis section 65 reads the data (information) at the time of outputting the error signal and the data (information) before and after the output of the error signal from the state monitor memory section 64 and compares and analyzes them to make an abnormality diagnosis. For example, when the data shown in (a) of FIG. 3 is obtained as the data before the output of the error signal, the data value 1 of the bit number 8 disappears when the error signal is output, and the data remains even after the output of the error signal. When the value 1 disappears, it is diagnosed that the temperature fuse is abnormal.
In this way, when the error signal is output and before and after the data can be compared, it is easy to detect an error and
It will be possible to make an accurate diagnosis.

As a method of collecting data at the time of occurrence of this error and before and after the occurrence of the error, for example, the combustion instrument is connected to the combustion instrument which is informed that the error frequently occurs and the inspection apparatus of this embodiment is connected. You can use it and use the fact that an error is issued while using it, or you can collect data, or connect the inspection device to the combustion instrument that displayed an error and reset and clear the error display state. In this state, the combustion appliance can be reproduced and the above data can be collected when an error signal is issued.

The present invention is not limited to the above-mentioned embodiment, and various embodiments can be adopted. For example, in the above-described embodiment, the operation of the main operation control unit on the combustion control unit 30 side is switched from the operation mode to the inspection mode when the mode changeover switch 35 is turned on. In addition, the operation mode may be switched to the inspection mode when the head password of the inspection operation command is added. Further, although the mode changeover switch 35 is configured by a hard switch, it may be configured by a relay switch. In this case, the command will switch the switch on and off.

In the above embodiment, the setting data memory
54 consists of non-volatile memory that can be written and erased,
Both the data to be saved and the data to be deleted later were stored in the non-volatile memory, but the setting data memory is composed of the non-volatile memory and the volatile memory such as RAM, and the non-erasing setting data is stored in the non-volatile memory. The data to be erased later may be stored in the volatile memory, and the unnecessary data stored in the RAM may be automatically erased when the power is turned off after the inspection.

Further, as shown by the broken line in FIG. 1, the inspection control unit 60 side and the combustion control unit 30 side are connected with the remote controller 57 as an intermediary, and the remote controller 57 has the function of the communication cable 61.
The operation such as the inspection may be performed by switching the mode between the operation mode and the inspection mode or communicating between the control units 30 and 60 via the remote controller 57.

Further, in the above embodiment, the inspection control unit 60 side and the combustion control unit 30 side of the combustion instrument are separated and formed as separate devices, but the inspection control unit 60 is the combustion control unit 30 of the combustion instrument. It may be formed in the same control device. In this case, the combustor has a built-in inspection device, and the communication cable is omitted.

Further, in the above-mentioned embodiment, the operation command for the inspection is formed by a set of the password and the command. However, the password is omitted, and the operation command is executed 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 encoded and given, but may be given from the beginning in the code form of the actual operation / command signal of the component of the combustion appliance. 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.
63 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 inspection control unit 60 side.

Further, in the above embodiment, the data correction unit 37 for correcting the sensor and the like is provided. However, particularly when the data correction unit 37 is configured as an inspection device dedicated to abnormality diagnosis, the external sensor 43, the external response detection unit 39, and the data determination unit. The unit 36, the data correction unit 37, and the external command / drive unit may be omitted. Further, external input means and ID data input section can be omitted if they are not particularly required.

Further, in the above-mentioned embodiment, the combustion instrument shown in FIG. 4 was described as a model, but the combustion instrument to be inspected by the device of the present invention is not necessarily limited to the model and model shown in FIG. It is not intended to be applied to the inspection of various other combustion appliances such as combustion type heaters, air conditioners and air conditioners.

[0064]

According to the present invention, a command for inspecting a combustion appliance is given by encoding each component of the combustion appliance, and therefore the same command can be obtained even if the model or model of the combustion appliance is different. Is given, it is possible to make the same operation command of the component according to the command. Therefore, even if the model or model of the combustion equipment is different, it is not necessary to create a dedicated inspection program for each of these models, but by giving a common inspection program or a single command, or by controlling the combustion control. The operation program of the department can be used to inspect the target combustion appliance.

Further, according to the present invention, by issuing a status monitor command from the inspection command output section, information on the operating status of the sensor or the actuator of the combustion appliance is fetched and stored in the status monitor memory section, and based on this stored information. Since it is configured to perform abnormality diagnosis of the components of the combustion appliance, the detection information of various sensors and the operating states of various actuators are compared with each other, and further, in consideration of changes with time, As a result of being able to perform component abnormality diagnosis,
The accuracy of abnormality diagnosis is remarkably enhanced, and even in recent sophisticated combustion appliances, it is possible to perform a sufficient diagnosis function to perform accurate and highly reliable abnormality diagnosis.

Furthermore, when an error signal is output from the combustion instrument, the apparatus configured to perform the abnormality diagnosis by storing and accumulating state monitor information at the time of outputting the error signal and before and after the output of the error signal As a result of being able to compare the data (information) of the output of the above, it is possible to more easily and accurately determine the cause of the error.

As described above, the present invention enables highly accurate abnormality diagnosis, so that when an error is generated from a combustion instrument, the cause of the error can be quickly and accurately identified and prompt action can be taken. It is possible to take, and it is very advantageous in the maintenance of the combustion equipment.

[Brief description of drawings]

FIG. 1 is a block configuration diagram showing an embodiment of a combustion appliance inspection device according to the present invention together with a combustion appliance.

FIG. 2 is an explanatory diagram of a communication unit that connects the inspection control unit side of the inspection device and the combustion control unit of the combustion appliance in the same embodiment.

FIG. 3 is an explanatory diagram showing one mode of status monitor information fetched and stored by a status monitor command of the apparatus of this embodiment.

FIG. 4 is an explanatory diagram showing a model example of various combustion appliances to be inspected.

[Explanation of symbols]

 27 Combustion equipment 28 Inspection device 30 Combustion control unit 31 Inspection command output unit 50 Main operation control unit 60 Inspection control unit 64 Status monitor memory unit 65 Abnormality diagnosis unit

Front Page Continuation (72) Inventor Seiichi Mori, 3-4 Fukamidai, Yamato City, Kanagawa Prefecture, Gaster Co., Ltd. (72) Inventor, Nobuhiro Tsuchiya 3-4, Fukamidai, Yamato City, Kanagawa Pref., Gaster (72) ) Inventor Yoshihiko Tanaka, 3-4 Fukamidai, Yamato City, Kanagawa Prefecture, Gaster Co., Ltd. (72) Inventor Takeaki Kawaguchi, 3-4, Fukamidai, Yamato City, Kanagawa Prefecture, Gaster Co., Ltd.

Claims (4)

[Claims] 1. An inspection control unit connected to a combustion control unit of a combustion instrument, and an inspection operation provided in this inspection control unit and configured by encoding each component of the combustion instrument and comprising one or more commands. An inspection command output unit that outputs a command to the combustion control unit, and a mode switching unit that switches the combustion control unit from the operation mode that operates according to the combustion control operation program to the inspection mode that operates according to the inspection operation command when the inspection operation command is output. And a state monitor memory unit for storing monitor information of an operating state including at least one of a sensor and an actuator of a combustion appliance according to a state monitor command from the inspection command output unit, and based on the stored information of the state monitor memory unit. An apparatus for inspecting a combustion appliance, comprising: an abnormality diagnosis unit for diagnosing an abnormality of a component of the combustion appliance. 2. When an error signal is output from the combustion instrument, the monitor information before and after the error signal is output and the monitor information before and after the error signal is output to and from the monitor information when the error signal is output to the status monitor memory section. A memory save command unit that stores and saves the error diagnosis unit is provided, and the abnormality diagnosis unit performs abnormality diagnosis of the constituent elements of the combustion appliance based on the data when the error signal is output and the data before and after the error signal is output, which is stored in the status monitor memory unit The apparatus for inspecting a combustion instrument according to claim 1. 3. The apparatus for inspecting a combustion instrument according to claim 1, wherein the inspection control unit is formed in the combustion instrument. 4. The combustion instrument inspection apparatus according to claim 1, wherein the inspection control unit is formed in a device separate from the combustion instrument.