JPH07310922A - Inspection device for combustion apparatus - Google Patents

Abstract

PURPOSE:To perform effective utilization of a sensor a detecting value of which is slightly deviated from a tolerance range by a method wherein a detecting signal from an object to be inspected sensor is computed with a reference detecting signal from an external reference sensor and when a value of a detecting signal is outside an allowable range, a displacement amount of the object to be inspected sensor is corrected. CONSTITUTION:A detecting signal from a sensor 47 in a combustion apparatus is compared with a detecting signal from a corresponding external sensor 43 by a correction data producing part 37. When, based on the comparing result, a detecting value from the sensor 47 in the apparatus is deviated from a tolerance of a detecting value of the external sensor based on a detecting value from the external reference sensor 43, a correction amount by which a detecting value from the sensor 47 in the apparatus is adjusted to a value within the tolerance range is determined as correction data through computation and stored at a data memory 54 on the combustion apparatus 27 side. A detecting signal from the sensor 47 in the combustion apparatus is corrected by a data correction part 76 on the combustion control part 30 side based on correction data stored at a data memory 54.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion appliance inspection device for automatically inspecting a sensor of a combustion appliance such as a water heater or a bathtub to correct a detection signal.

[0002]

2. Description of the Related Art Burning appliances are provided with a plurality of various sensors, and the sensors are manually inspected at the time of product shipment, appliance maintenance, etc., and the detection values of the sensors are given in advance. If it is out of the specified tolerance range, it is judged to be defective and is discarded.

[0003]

However, manually inspecting the sensor of the combustion appliance is inefficient in working efficiency, and if the detected value of the sensor is out of the tolerance range, it is discarded. Therefore, there is a problem in that the sensor cannot be effectively used and the cost of equipment and maintenance is increased.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to automate the inspection of a sensor of a combustion appliance to improve the efficiency of the inspection work, and the detected value of the sensor will have a tolerance. Even if it is slightly out of range,
An object of the present invention is to provide an inspection device for an inspection tool that can effectively utilize the sensor without disposing of it.

[0005]

In order to achieve the above object, the present invention is constructed as follows. That is, the inspection device of the present invention receives an operation command command for each component of the combustion appliance, and includes an interrupt control unit that is signal-connected to a combustion control unit that controls the operation of the target component of the command according to the operation command. This interrupt control unit is provided with an interrupt command output unit that outputs the operation command of each component to be inspected of the combustion appliance to the combustion control unit, and the operation command of this interrupt command output unit. The detection signal of the sensor to be inspected captured by the sensor and the reference detection signal of the external reference sensor that detects the same object as the sensor to be inspected are compared, and the value of the detection signal is given in advance to the value of the reference detection signal. A correction data creation unit that creates correction data for correcting the deviation amount of the sensor to be inspected when it is determined to be out of the range, and provides the correction data to the combustion control unit. It is configured Te.

[0006]

In the present invention having the above-described structure, when inspecting the sensor of the combustion appliance, the interrupt control unit side designates the sensor to be inspected and controls the combustion of the read operation command of the detection signal of the sensor to be inspected. Add to the section. Upon receipt of this operation command, the combustion control unit reads out the detection signal of the specified sensor to be inspected. On the other hand, a reference detection signal of an external reference sensor that detects the same target as this inspection target sensor is fetched and the signals of both are compared. Then, when the value of the detection signal is out of the allowable range of the value of the reference detection signal, correction data for correcting the deviation of the detection signal is created by the correction data creation unit and given to the combustion control unit.
As a result of correcting the value of the detection signal of the sensor to be inspected using the correction data in the combustion control unit, the combustion operation of the combustion instrument can be performed without any trouble using the corrected detection signal of the sensor.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. The combustion appliance inspection apparatus according to the present embodiment automatically inspects the sensors and the like that form the combustion appliance. 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) in the figure
Indicates a capacity-switching type water heater, in which the water entering from the water supply pipe 1 is heated by the combustion heat of the burner 2 when passing through the hot water heat exchanger 3 to be turned into hot water. It is led to a desired hot water supply place such as a kitchen through the 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. After opening, driving the igniter electrode 12 to perform point ignition, and after detecting flame at the frame rod electrode 13, the hot water temperature detected by the hot water temperature sensor 15 such as a thermistor is set to the set temperature set by the remote controller 14. Therefore, the opening amount of the proportional valve 10 is controlled so that the rotation control of the combustion fan 7 is also performed according to the combustion amount to control the hot water supply operation.
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 of the combustion fan, 16 is a water temperature sensor such as a thermistor, and 17 is a gear motor type water amount control valve for adjusting the water amount.

FIG. 6 (b) shows a bath kettle, and the same parts as those of the water heater shown in FIG. 6 (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 such as a thermistor reaches the bath set temperature set by the remote controller 14, the reheating operation is stopped.

FIG. 6 (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. 6 (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 a block configuration of a main part of a combustion appliance inspection apparatus according to this embodiment in a connected state with the combustion appliance. In the figure, reference numeral 27 denotes a burner such as a water heater or bath tub shown in the model example, and 28 denotes an inspection control device composed of a microcomputer, a personal computer or the like. The inspection apparatus of this embodiment includes an inspection controller 28 and an external facility 29.
The inspection control device 28 is provided with an interrupt control unit 60. This interrupt 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 an interrupt command output unit 31,
A data read / write unit 32, a data output unit 33, an interface 34, a mode changeover switch 35, an inspection determination unit 36, a correction data creation unit 37, an external command / drive unit 38, and an external response detection unit 39. The notification unit 40, the data input unit 42, and the inspection data storage unit 49 are provided.

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, which inspects various constituent elements of the combustion 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 appliance, for example, the flow sensor 6 of the combustion appliance shown in FIG. 6, 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, the water flow control valve 17, the circulation pump 20, the actuator such as the pouring valve 25, the external sensor 43 of the external equipment 29 and the activator as a component, the operation command of each component is encoded and identified. In this embodiment, commands are classified into the following five 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 the step operation of a desired component in the sequence program (operation program) for operating the combustion appliance, and by issuing this command, This means that the designated program operation for combustion operation will be canceled, and when performing operation inspection of combustion equipment according to the combustion operation program, unnecessary program operation can be omitted and the inspection can be completed in a short time. Become.

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. This is done by changing the set water level of the water filling, setting the time by a timer or the like, and setting a dummy command or setting a dummy numerical value for the component. The final fifth type of command is to read out detection data from a sensor or the like, correct the detection data, or read out the operating state of each component such as an actuator (monitor command). For example, this command Reads or corrects signals from sensors such as the hot water temperature sensor 15 and the running water switch 22, whether the remote control switch is in the on state or the off state, or the burner is in the combustion state or the combustion stop state. Status monitoring such as whether there is any is performed.

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 one or more commands at the beginning in time series. In this embodiment, this interrupt program functions as an inspection-dedicated program for inspecting a combustion appliance. The operation command output unit 46 arranges interrupt operation commands after the password as the same command regardless of the model and model of the appliance and adds the interrupt operation commands 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 intersection thereof, and the like, and this ID data is the ID data input unit 41. The input data is read by the data read / write unit 32, and the read data is added to the interrupt output unit 31 by the key operation of the keyboard, the bar code input, or the card input such as a memory card. ing. The data output unit 33 applies the interrupt operation command given from the interrupt command output unit 31 to the combustion control unit 30 of the combustion appliance 27 via the interface 34 and the communication cable 61 as a communication means.

FIG. 2 shows the side of the interrupt controller 60 and the burner.
27 shows the details of the cable connection of the combustion control unit 30 side of 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 wire of the third core is the signal line TxD for command transmission of the operation command, and the wire of the fourth core is the combustion control unit 30.
Side is a signal line RxD for responding to a command sent from the side to the interrupt control unit 60 side, and the fifth core line and the sixth core line are loop line lines passing through the mode changeover switch 35, and in this embodiment, The mode changeover switch 35 is composed of a relay, and the mode changeover switch 35 is turned on and the loop path is closed in response to a relay-on command command.

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 interrupt operation command. When the loop path is opened and opened by a relay off command command, the inspection mode is switched to the operation mode.

The external sensor 43 shown in FIG. 1 is a reference sensor for inspecting and correcting (calibrating) the sensor used in the combustion appliance, and this external sensor 43 is an external facility.
It is provided in 29. This external equipment 29 has a pipe connected to a pipe line around the water and gas around the combustion appliance to be inspected, and the same target information as that detected by the sensor of the combustion appliance to be inspected is connected to this pipe. An external sensor 43 for detecting is attached. FIG. 3 shows an example of the external equipment 29 connected to the combined water heater as an example of the external equipment.

In the figure, the external equipment 29 includes a pipe line 62 connected to the water supply pipe 1 and a pipe line 63 connected to the hot water supply pipe 4.
Pipe line connected to the gas supply passage 19 on the hot water supply side and the reheating side
64 and a conduit 65 connected to the return side conduit on the reheating side,
It has a pipeline 66 connected to the forward side pipeline on the reheating side, and a pipeline 62 is provided with an inspection of the incoming water reference temperature sensor 67 and the flow rate sensor 6 for inspecting the incoming water temperature sensor 16. A reference flow rate sensor 75 is provided, and a conduit 63 is provided with a hot water reference temperature sensor 68 for inspecting the hot water temperature sensor 15. Further, the pipe 65 is provided with a bath reference temperature sensor 69 for inspecting the bath temperature sensor 24 and a reference water level sensor (reference pressure sensor in this embodiment) 70 for inspecting the water level sensor 26. . And lines 65 and 66 are three-way valves.
It is connected via 71 to a small water tank 72 having a volume of, for example, 10 liters. Reference numeral 73 is an electromagnetic valve provided as needed for opening and closing the pipeline.

When inspecting this combined water heater, the water lines and gas lines of the appliance are connected to the corresponding pipe lines 62 to 66 on the side of the external equipment 29 at the connecting portion 74, and the water input reference temperature sensor is connected. 67 detects the same detection target as the water temperature sensor 16, that is, the water temperature of the water supply pipe 1, and the reference flow rate sensor 75 detects the same water flow rate as the flow rate sensor 6. Similarly, hot water reference temperature sensor 68 detects the same hot water temperature as hot water temperature sensor 15. Similarly, the reference water level sensor 70 detects the water level in the same water tank 72 as the water level sensor 26, and the bath reference temperature sensor 69 has the same return side circulating hot water temperature as the bath temperature sensor 24, that is, the water tank.
Detects water temperature at 72. And each of these external sensors
The detection signal of 43 is detected by the external response detection unit 39 and added to the inspection determination unit 36. Although the external equipment 29 of the combined water heater is shown in FIG. 3, when the water heater shown in (a) of FIG. 6 or the bath kettle shown in (b) of FIG. The external equipment 29 suitable for the inspection target is used.

The inspection judging section 36 detects the detection signal of the external sensor 43 obtained from the external response detecting section 39 and the sensor in the combustion appliance 27.
The sensor detection signal of 47 is compared with the external sensor 43 as a reference sensor signal, and the sensor 47 used in the combustion appliance 27 is compared.
Is normal or not. 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, or the characteristic straight line connecting the detection values of two or more points, is set in advance with respect to the detection value and the characteristic straight line obtained by the reference sensor. If the difference is within the given allowable range, it is determined to be normal (pass), and if the difference exceeds the tolerance of the allowable range, it is determined to be defective (fail).

The inspection data storage unit 49 is composed of a non-volatile memory such as an EEPROM that can be written and erased by an electric signal, and the inspection data storage unit 49 stores and stores the inspection determination result of the inspection determination unit 36. To do. Then, when the command of the operation command requests notification of the accumulation result of the inspection data, the accumulated inspection data is displayed on the display unit of the notification unit 40 including a liquid crystal screen or the like. The notification unit 40 may be provided separately from the inspection control device and may be configured separately from the outside, and the number is not limited to one. 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. At the end of the inspection, the inspection data accumulated in the inspection data accumulating unit 49 is written to the memory card or the like inserted into the ID data input unit 41 via the data reading / writing unit 32 in response to the command request.

The correction data creating section 37 is provided with the inspection judging section 36.
Based on the comparison result between the detection signal (detection value) of the sensor 47 inside the combustion instrument and the detection signal (detection value) of the corresponding external sensor 43, the detection value of the instrument internal sensor 47 becomes the detection value of the external reference sensor 43. On the other hand, when it is outside the tolerance of the external sensor detection value given in advance, the instrument internal sensor 47
The correction amount for keeping the detected value of (4) within the tolerance range is calculated as correction data. Then, the obtained correction data is stored in the data memory 54 on the combustion appliance 27 side via the data output unit 33.

The data correction unit 76 on the combustion control unit 30 side corrects the detection signal of the sensor 47 inside the combustion appliance based on the correction data stored in the data memory 54.

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, the data memory 54, a monitor signal input / output unit 55, and the data correction unit 76. The data input unit 48 receives an operation command of an interrupt sent from the interrupt control unit 60 side through the interface 34, and according to a command request,
It is added to the main operation control unit 50 and the 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.
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 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. Then, the inspection operation command (command) is converted into an actual operation command of a form adapted to each instrument. 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 conventional combustion appliance operation program, the operation command for 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. Since the storage positions are different, there is a problem in that when an interrupt program for inspecting an instrument or the like is to be created, a separate program must be created for each different instrument model or model.

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

The main operation control unit 50 operates in accordance with a mode switching signal from the mode switching switch 35, that is, when the relay mode switching switch 35 shown in FIG. Is switched to the inspection mode which operates 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, the main operation control unit 50 switches the operation mode from the inspection mode to the operation mode when a switch-off signal is applied from the mode switching switch 35 of the relay during the operation in the inspection mode.

The memory clear command section 53 stores data in the 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. Output a clear command.

The 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 data memory 54 is a data setting command of a command included in the interrupt operation command during operation in the inspection mode. Data that should be retained without being erased (for example, the valve opening drive current value and sensor correction data corresponding to the maximum and minimum combustion capacities of the proportional valve 10) and temporarily stored for inspection. Store data that does not need to be saved. 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.

The controlled element 56 constitutes the combustion appliance 27, for example, the solenoid valve 8 of the apparatus shown in FIG. 6, 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 opening control of the water amount control valve 17, the opening control of the water amount control valve 17 is performed according to the 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 data memory 54 in response to a command request. The data output section 52 transmits the monitor signal applied from the monitor signal input / output section 55 to the interrupt control section 60 side through the communication cable 61 which is a communication means.
Using this transmission monitor data, the inspection determination unit 36 determines whether the component to be inspected is acceptable or not, and the correction data creation unit 37 creates correction data, and the notification unit 40 displays the inspection result, for example, by displaying a message or the like. It In addition, as described above, the data correction unit 76 corrects the detection signal of the sensor in the combustion instrument that is out of the tolerance, using the correction data stored in the data memory 54. Then, the corrected sensor detection signal is given to the main operation control unit 50 to effectively perform the combustion operation.

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, the inspection control device 28 side and the combustion appliance 27 side are connected by a communication cable 61, the power supply of the device 28 side and the combustion appliance 27 side is turned on, and the mode changeover switch 35 is turned on. Switch from operating mode to inspection mode. By advancing the inspection program in this state, the command for each step operation of the inspection program starts with the password as the main operation control unit of the combustion control unit 30.
Added to 50. Then, the conversion table 45 translates the actual operation command signal, and the translated operation command signal causes the main operation control unit 50 to perform the control operation according to the command request, thereby controlling the control target element 56 of the combustion appliance 27.
Information of the operating state of the device, the detection signal of the sensor 47, and the like.

Next, an inspection of the in-apparatus sensor 47 using the apparatus of this embodiment and an example of correction thereof will be described. Water level sensor
When the inspection of 26 is performed, water is put in the water tank 72, and the pipeline of the circulation system connected to the water tank 72 is filled with water. In this state, the water level detection values of the reference water level sensor 70 and the water level sensor 26 are fetched at the position of this water level. The relationship between the water level of the reference water level sensor 70 and the sensor output is obtained in advance. Next, the drain plug (not shown) of the water tank 72 is opened and drained for a short time to lower the water level of the water tank 72, and the sensor detection signals of the reference water level sensor 70 and the water level sensor 26 at the water level at this time are taken in. .

Then, as shown in FIG. 4, the horizontal axis is the water level,
Characteristics of the reference water level sensor 70 are plotted by plotting the actual measurement points of the reference water level sensor 70 before and after drainage and the actual measurement points of the water level sensor 26 on a graph in which the vertical axis is the sensor output, and connecting the measured two points with straight lines. A straight line and a characteristic straight line of the water level sensor 26 are obtained. The work of creating this graph is performed by the inspection determination unit 36. After creating the characteristic straight lines of both of them, both characteristic straight lines are compared and whether or not the characteristic straight line B created by the actual measurement of the water level sensor 26 falls within the tolerance range of the reference characteristic straight line A created by the actual measurement of the reference water level sensor 70. If there is a portion where the characteristic straight line B of the water level sensor 26 deviates from the tolerance range of the reference characteristic straight line A, the water level sensor 26 is determined to be defective.

When the inspection determination unit 36 determines that the defect is defective, the correction data generation unit 37 calculates the deviation amount ΔP of the characteristic line B of the water level sensor 26 from the reference characteristic line A,
A correction amount for matching the shifted characteristic straight line B with the reference characteristic straight line A, that is, a correction amount for canceling the shift amount ΔP is obtained as correction data, and this correction data is used as the data memory 54.
Stored in. And during normal combustion operation, the water level sensor
When the water level detection sensor is taken in from 26, the data correction unit 76 corrects and outputs the detection value of the water level sensor 26. By this correction, the characteristic straight line of the water level sensor 26 to be inspected matches the characteristic straight line of the reference water level sensor. For example, when the water level is H ₁ , the sensor output V ₁ is output from the defective water level sensor before correction. Where it should be, the correct water level output V ₁ ′ is output by the correction.

By the same method, the temperature sensors such as the hot water temperature sensor 15 and the bath temperature sensor 24 are inspected and corrected. That is, as shown in FIG. 5, the temperature at two points having different water temperatures is measured by a temperature sensor to be inspected and a reference temperature sensor which is an external sensor, respectively, and the temperature is plotted on the horizontal axis and the sensor output is plotted on the vertical axis. Plot each measured point on the, and compare the characteristic straight line connecting the two measured points of the inspection target with the reference temperature characteristic straight line connecting the two measured points of the reference temperature sensor. Is out of the tolerance range of the reference temperature characteristic straight line, it is determined as a failure, and the temperature characteristic straight line of the inspection target is corrected to fall within the tolerance range of the reference temperature characteristic straight line. The correction amount that matches the characteristic straight line to the reference temperature characteristic straight line is obtained as correction data, and the detection signal of the failed temperature sensor is corrected by this correction data, so that the combustion operation of the combustion appliance can be performed without any problems. Will take place is that.

Further, in the same manner, the inspection of the flow rate sensor 6 and its correction are carried out by using the detection data of the reference flow rate sensor 75. Further, in the case of a combustion instrument in which a gas flow rate sensor for detecting the gas supply amount is provided in the gas supply passage 19, a reference gas flow rate sensor is similarly provided in the pipeline connected to the gas supply passage 19, and the gas to be inspected By determining the actual measurement data of each of the two points of the flow rate sensor and the reference gas flow rate sensor, the quality determination and the correction operation of the gas flow rate sensor can be performed in the same manner, and various sensors other than the above-mentioned sensor can also be inspected. In addition to the above sensor, a reference sensor is provided, the same target is detected, and the characteristic straight lines connecting the two measured points are compared, so that the inspection and the defective product can be similarly corrected.

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 the operation command of the component you want to inspect in a sporadic manner as a command, it can be used in combustion appliances of different models and models. Also, so that can be performed without any trouble the inspection.

Further, in this embodiment, since the operation of the constituent elements of the combustion appliance is coded and the command is issued, the constituent element to be inspected can be directly designated and the inspection can be performed immediately. The inspection time can be greatly shortened. That is, in the conventional example, since the inspection is performed according to the operation program, there is a waste of time that the operation program is run from the beginning and it is necessary to wait until the operating position of the component to be inspected is reached.
In the present embodiment, such waste of time is eliminated and the inspection work can be performed efficiently.

For example, in the conventional example, when performing the water level sensor performance inspection when filling the bathtub, the bath is filled from the empty state, and when the set water level set by the remote control is reached, the pot is filled. Although it was inspected depending on whether or not the operation was stopped, in the present embodiment, the operation program is a ROM.
At the time of writing to (Read Only Memory) memory, it is checked that there is no error in the program, and from this fact, the combustion appliance is inspected on the assumption that there is no error in the operating program. When performing the performance inspection of the water level sensor when filling the water, it is not necessary to inspect the water level when the bathtub is empty, and the quality of the water level sensor itself can be inspected. Only the change needs to be inspected, and the inspection can be performed in an extremely short time.

The present invention is not limited to the above-mentioned embodiments, and various embodiments can be adopted. For example, in the above-mentioned embodiment, when the sensor is inspected, two actual measurement points are obtained, but of course, three or more actual measurement points may be obtained. In an extreme case, one actual measurement point may be obtained. It is also possible to carry out an inspection upon request. When the sensor is detected using one actual measurement point, the same target is actually measured using the sensor to be inspected and an external reference sensor, and the values of the actual measurement point of the reference sensor and the actual measurement point of the inspection target sensor are measured. When the actual measurement point of the sensor to be inspected is out of the tolerance range of the actual measurement point of the reference sensor, it is determined to be defective, and only the difference between the actual measurement point of the inspection target and the actual measurement point of the reference sensor The characteristic straight line can be corrected by, for example, moving in parallel to the measured point side of the reference sensor.

Further, in the above embodiment, the allowable range of the deviation between the detection values of the external reference sensor and the inspection target sensor, which is the judgment reference for correcting the inspection target sensor, is the tolerance range of the external reference sensor. Other ranges may be set arbitrarily. In an extreme case, the allowable range is set to zero, and the detection value of the inspection target sensor is adjusted to the detection value of the external reference sensor even if the detection value of the inspection target sensor deviates slightly from the detection value of the external reference sensor. The correction data may be obtained and the correction may be performed.

In the above embodiment, the operation of the main operation controller on the combustion controller 30 side is switched from the operation mode to the inspection mode when the mode selector switch 35 is turned on. In addition to turning on, the operation mode may be switched to the inspection mode when the password at the beginning of the interrupt operation command is added.

In the above embodiment, the data memory 54 is composed of a writable and erasable non-volatile memory, and both the data to be saved and the data to be erased later are stored in the non-volatile memory. It consists of non-volatile memory and volatile memory such as RAM.The data that is not erased is stored in the non-volatile memory, the data that is erased later is stored in the volatile memory, and when the power is turned off after the inspection operation is completed, You may make it erase unnecessary data stored in RAM automatically.

Further, as shown by the broken line in FIG. 1, the interrupt 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 is provided with the function of the communication cable 61. The operation of the inspection may be performed by switching the operation mode and the inspection mode via the communication or communicating between the control units 30 and 60.

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

Further, in the above embodiment, the operation command of the interrupt is formed by the aggregate of the password and the command. However, 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.

Further, the command does not necessarily have to be coded 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, since it is not necessary to translate the command code into the actual operation command signal, the command conversion table can be omitted. However, when the command is encoded, since a simple code can be used, it is easy to input the command from the outside by the external input means 83 or the like.

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.

Further, in the above-mentioned embodiment, the burning appliance shown in FIG. 6 was described as a model, but the burning appliance to be inspected in the present invention is not necessarily limited to the model or model of the model shown in FIG. Not a thing. Further, the invention is applied to various other combustion appliances such as a combustion type heater, an air conditioner, and an air conditioner.

[0058]

According to the present invention, a command for inspecting a combustion appliance is given in the form of an operation command of each component of the combustion appliance, and therefore, the same even if the model or model of the combustion appliance is different. By giving a command, the same operation of the constituent element according to the command can be performed. Therefore, even if the model and model of the burner are different, it is not necessary to create a separate inspection-dedicated program for each of these models, but by giving a common inspection program or a command for one-time inspection operation, the target It is possible to have an inspection of the burning appliance to be performed.

Further, the sensor used in the combustion instrument can be automatically inspected, and since the sensor to be inspected can be directly accessed and inspected, the inspection time can be extremely short and the inspection work can be greatly performed. It is possible to improve efficiency.

Further, even if the sensor is determined to be defective as a result of the inspection, the correction data is created, and the detection signal of the defective sensor is corrected based on the correction data and corrected to the correct value. Since the sensor that has become defective in the inspection can be used as it is without being discarded, the sensor can be effectively used and the cost of the sensor can be reduced, which is economically advantageous.

[Brief description of drawings]

FIG. 1 is a block 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 interrupt control unit side of the inspection device and the combustion control unit side of the combustion appliance in the same embodiment.

FIG. 3 is an explanatory diagram of a connection state between a combustion appliance to be inspected and an external facility including an external sensor.

FIG. 4 is a graph showing an inspection of the water level sensor and its correction example in the present embodiment.

FIG. 5 is a graph showing an example of inspection and correction of a temperature sensor.

FIG. 6 is an explanatory diagram showing a model example of various combustion appliances to be inspected.

[Explanation of symbols]

 27 Combustion appliances 28 Inspection control device 29 External equipment 36 Inspection determination part 37 Correction data creation part 43 External sensor 47 Sensor 60 Interrupt control part 76 Data correction part

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Naoki Obayashi, 3-4 Fukamidai, Yamato City, Kanagawa Prefecture, inside Gaster Co., Ltd. (72) Inventor, Nobuhiro Tsuchiya 3-4, Fukamidai, Yamato City, Kanagawa Prefecture, inside Gaster Co., Ltd. (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 (72) Inventor, Masahiko Sumita, Kanagawa 3-4 Fukamidai, Yamato-shi, Japan Inside Gaster Co., Ltd.

Claims (1)

[Claims] 1. An interrupt control unit, which is connected to a combustion control unit that receives a command of an operation command of each component of a combustion appliance and controls the operation of a component targeted by the command according to the operation command, The interrupt control unit is provided with an interrupt command output unit that outputs the operation command of each component to be inspected of the combustion appliance to the combustion control unit, and is also taken in by the operation command of the interrupt command output unit. The detection signal of the sensor to be inspected is compared with the reference detection signal of an external reference sensor that detects the same object as the sensor to be inspected, and the value of the detection signal is outside the allowable range given in advance with respect to the value of the reference detection signal. A device for inspecting a combustion instrument, comprising: a correction data creation unit that creates correction data for correcting the deviation amount of the sensor to be inspected when it is determined that the inspection target sensor is present and gives the correction data to the combustion control unit.