JPH10185318A - Combustor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combustion instrument capable of accurately and rapidly persuing an error production cause when error display of the combustion instrument is issued. SOLUTION: Condition setting data holding part 33 on the side of a controller 17 of a combustion apparatus holds and stores data collection conditions inputted from a condition setting input part 37 of an external display device 31 and data of an address of the collected data. Operation condition collation part 34 applies a trigger signal to a data copying part 35 when an operation state of the combustion apparatus is coincident with the data collection conditions. The data copying part 35 receives the trigger signal, and collects in the lump data of addresses stored in the condition setting data holding part 33 from the contents in a RAM 27 of a control data memory and stores and holds them in a copied data storage part 32. The data in the copy data storage part 32 is read on the side of a data read part 38 and is displayed on a display part 40 to investigate the cause of the production of the error.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion system having a function of automatically collecting and holding data of a specified operation state when an operation state of a combustion operation matches an externally input data collection condition. It concerns equipment.

[0002]

2. Description of the Related Art FIG. 3 shows a block diagram of a combustion apparatus having a self-diagnosis function. In the figure, a combustion control device 17 includes a combustion control unit 26 and a control data memory RA.
M27, a self-diagnosis unit 28, and a data transfer unit 30. The RAM 27 stores data necessary for combustion control. The RAM 27 stores data such as detection values of various sensors and calculated values (including values in the middle of calculation) necessary for combustion control at address positions where the data are given in advance. Store.

The combustion control unit 26 has a combustion operation sequence program, fetches data from the RAM 27 according to the program, outputs a control signal, and controls the combustion operation.

The self-diagnosis unit 28 has a self-diagnosis program. When an abnormality occurs in the operating state of the combustion equipment, an abnormal signal is transferred to, for example, a remote controller, and the abnormality of the combustion equipment is generated on the display unit of the remote controller. Elements (sensors, actuators, etc.) are identified and displayed using symbols and the like.

[0005] An external display device 31 constituted by a personal computer or the like is connected to the control device 17. When an error is displayed on the remote controller, the external display device 31 is connected to the control device 17. Then, the data of the operating state of the combustion equipment stored in the RAM 27 is read out by specifying the address from the external display device 31 side and displayed on the display unit, and the cause of the error occurrence is diagnosed.

[0006]

For example, when an error occurs due to disconnection of a signal line in the control device 17, a repair worker can easily go to a combustion equipment installation site and find out the cause of the failure. Yes, but there are cases where the error of the combustion equipment may occur when multiple operating conditions overlap.In such a case, the repair worker must go to the place where the combustion equipment is installed. Even when trying to reproduce the occurrence of the error, the error does not occur, and the true cause of the error can often not be determined, and it is not possible to accurately and quickly perform repairs and inspections for the error occurrence There is a problem.

[0007] In addition, by looking at the error display on the remote controller, it is possible to know what error has occurred, but it is not possible to determine under what operating conditions the error has occurred, and to determine the cause of the error. There is a problem that a gap is required.

Further, even when the combustion equipment is operated at the installation site of the combustion equipment at the time of the failure inspection and the state of occurrence of the error can be reproduced, a plurality of data relating to the occurrence of the error are read out and displayed on the external display device 31 side. To attempt to diagnose the cause of the error, the external display device 31
Since it is a method of serially addressing and reading the data to be read of M27, it takes time from reading the first data to reading the next data, and during that time, the data in the RAM 27 is not read. Since the data has changed (RA27 data is changing every moment), it is not possible to capture the relevant data at the same time when the error occurred, so even if the error can be reproduced, the cause of the error can be accurately determined. In addition, there is a problem that it cannot be determined quickly.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to simultaneously collect relevant data at the same point in time when an error occurs and read out the data at the time of inspection and repair to obtain accurate and quick data. It is an object of the present invention to provide a combustion device capable of performing various error diagnosis.

[0010]

In order to achieve the above object, the present invention takes the following measures. That is,
According to a first aspect of the present invention, there is provided a combustion apparatus including a control data memory for storing data for combustion control, and a combustion control unit for performing combustion control based on data stored in the control data memory. A condition setting data holding unit for holding an address of sampling data corresponding to the sampling condition and the data sampling condition, and comparing and matching whether or not the operating state of the combustion device matches the data sampling condition in the operating state of the combustion device. An operating condition matching unit that outputs a condition matching signal when the condition is met, and receives the condition matching signal from the operating condition matching unit and extracts the sampled data of the address given corresponding to the data sampling condition from the data in the control data memory. A data copy unit that collectively collects, a copy data storage unit that stores data collectively collected by the data copy unit, Receiving data read command from the parts have a means for solving the problems with a configuration in which a data external transfer unit that transfers the destination reads the data stored in the copy data storage unit.

In a second aspect based on the first aspect, after the data is stored in the copy data storage unit, the stored data is transferred or the stored data is cleared. Is a means for solving the problem by having a re-copy prevention unit for preventing data from being re-stored in the copy data storage unit.

In the present invention having the above-described configuration, by inputting data collection conditions and an address of data to be collected from an external device such as an external display device, these data collection conditions and the addresses of the collected data corresponding to the conditions are set. It is held in the data holding unit. In this state, the operation of the combustion equipment is performed.When the operation state of the combustion equipment matches the data collection condition, the data of the specified address in the control data memory is collectively transmitted by the data copy unit. It is collected and stored in the copy data storage.

As described above, according to the present invention, when the operating state of the combustion equipment is a data collection condition, that is, when an error occurs, the related data at the same time when the error occurs is stored in the control data memory from the stored data. At the same time, the data is collected and stored, and the repair worker reads out and displays the data stored in the copy data storage unit using an external display device or the like to check the cause of the error accurately and It will be possible to find out quickly.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows the combustion apparatus of the present embodiment using a water heater as an example. In FIG. 1, a tool main body 2 is housed in a tool case 1. A burner 4 of a combustion surface switching type is provided below the combustion chamber 3 of the apparatus main body 2, and a combustion fan 5 for air supply and exhaust is provided below the burner 4. The box-shaped nozzle holder 6 is provided with a nozzle for ejecting and supplying gas to the burner 4, and the nozzle holder 6 switches the burner combustion surface (switches the burner combustion capability) to a capacity switching valve 22.
The gas supply passage 7 is connected via a, 22b, and 22c, and fuel gas is supplied through the passage 7. The gas supply passage 7 incorporates an original electromagnetic valve 8 for opening and closing the passage and a proportional valve 10 for controlling the amount of gas supplied to the burner 4 by the opening amount.

A passage 24 is formed between the air chamber 9 below the burner 4 and the combustion chamber 3 above the burner by piping or the like. An air volume detection sensor 23 for detecting the volume of air supplied to the air conditioner 4 is provided.

The air volume detection sensor 23 is constituted by using a hot wire type wind speed sensor, a Karman vortex type wind speed sensor, a differential pressure sensor and the like.

A hot water supply heat exchanger 11 is provided above the combustion chamber 3, and a water supply pipe 12 is provided on the inlet side of the hot water supply heat exchanger 11.
Is connected, and a hot water supply pipe 13 is provided on the outlet side of the hot water supply heat exchanger 11.
Is connected. The water supply pipe 12 is provided with an incoming water temperature sensor 14 for detecting the temperature of incoming water and a flow rate sensor 15 for detecting the flow rate of incoming water.On the hot water supply pipe 13 side, a tapping temperature sensor 16 for detecting the temperature of incoming hot water, A water amount control valve 19 to be adjusted is provided.

In the figure, reference numeral 18 denotes an igniter electrode (ignition plug) for igniting fuel gas, 20 a frame rod electrode for detecting the flame of the burner 4, and 21 a Hall IC for detecting the rotation of the combustion fan 5. A fan rotation detection sensor 29 is an air temperature sensor attached to the nozzle holder 6 to detect an air temperature inside the appliance, and 51 is an outside air temperature sensor.

The combustion operation of this kind of appliance is performed by a control device 17, to which a remote controller for setting hot water supply temperature and displaying the set temperature is connected. As shown in FIG. 1, the combustion device 17 has a combustion control unit 26 and a RAM 27 (or a non-volatile EEPROM or the like capable of writing and erasing data by an electric signal) 27 functioning as a control data memory. The RAM 27 stores various sensors 14, 15, 16, 20, 21, and 2.
Detection data of 3, 29, 51, etc., data of the operating status of the combustion fan 5, various valves 8, 10, 19, 22a to 22c, various actuators such as igniters, data of various switches, remote control (Set temperature, time), error code life diagnosis data, data of calculated values (including values in the middle of calculation), and the like are fetched from time to time during operation of the combustion operation and stored. The combustion control unit 26 has a built-in sequence program, reads data from the memory 27 and controls the combustion operation as follows according to the sequence program for the combustion operation.

First, when a tap (not shown) provided at the end of the external hot water supply pipe connected to the hot water supply pipe 13 is opened, water enters through the water supply pipe 12 and the flow of the water is detected by the flow rate sensor 15. When it is detected, the combustion control unit 26 of the control device 17 rotates the combustion fan 5 and outputs a fan rotation detection sensor.
After confirming that the fan rotation has been detected by the fan 21 and the air volume detection sensor 23 has detected the air volume, the discharge of the igniter electrode 18 is started.
Then, the main solenoid valve 8, the performance switching valves 22a to 22c, and the proportional valve 10 are opened to perform burner ignition. Frame rod electrode 20
Confirms that the flame has been detected, opens and closes the capacity switching valves 22b and 22c according to the combustion capacity, controls the valve opening drive current of the proportional valve 10, and adjusts the gas supply amount so that the tapping water temperature reaches the set temperature. (The valve opening amount of the proportional valve 10) and the rotation of the combustion fan 5 is controlled so as to supply air corresponding to the gas supply amount.

When the tap is closed after the use of hot water, the flow of water to the hot water supply heat exchanger 11 is stopped, and when the stop of the flow of water is detected by the signal of the flow rate sensor 15, each valve 8 is turned off. , 22a to 22c, and 10 are closed, and thereafter, when a post-purge period in which the exhaust gas in the combustion chamber 3 is exhausted elapses, the rotation of the combustion fan 5 is stopped to prepare for the next hot water.

The present embodiment is characterized in that, in addition to the combustion control unit 26 and the RAM 27, the control device 17 includes a copy data storage unit 32, a condition setting data holding unit 33, and an operation condition comparison unit 34. , Data copy unit 35 and data external transfer unit 36
Is provided. In this embodiment, the self-diagnosis unit 28 as shown in FIG. 3 and a configuration for displaying the diagnosis result of the self-diagnosis unit 28 on the remote controller are provided, but these are not shown in FIG. I have.

The condition setting data holding section 33 stores and holds data specified by the condition setting input section 37 of the external display device 31. The condition setting input section 37 is constituted by a data input section such as a keyboard or a card or a floppy disk.
The operating conditions of the combustion equipment for collecting the data stored in the AM 27 are input as data collection conditions, and at the same time, the address (RA
(The address of the data stored in M27).
The data of the input data collection condition and the address are input to the condition setting data holding unit 33, and the data is stored and held in the memory of the condition setting data holding unit 33.

The operating condition collating unit 34 monitors the operating state of the combustion equipment based on the control operation of the combustion control unit 26 and the data in the RAM 27, and the operating state of the combustion equipment is stored and held in the condition setting data holding unit 33. The data copy condition is checked if the combustion equipment matches the data collection condition.
Add to 35.

In response to the condition match signal, the data copy unit 35 receives from the condition setting data holding unit 33 information on the address of the collected data corresponding to the data collection condition for which the operation condition has been matched. The data of each address given corresponding to the data is collectively collected (copied) from the data stored in the RAM 27, and the collected copy data is stored in the copy data storage unit 32.

The data external transfer unit 36 transfers the data stored in the copy data storage unit 32 to the data read unit 38 when receiving the read data read signal from the data read unit 38 on the external display device 31 side. . The data transferred to the external display device 31 is displayed on the display unit 40 of the external display device 31.

Next, the data collecting operation in this embodiment will be specifically described by taking a combustion fan as an example. The self-diagnosis unit of the present embodiment diagnoses the operation of the combustion fan at an initial stage of fan startup when a predetermined time (for example, 10 seconds) has elapsed after the rotation start of the combustion fan, and at the time of mild ignition (at the time of gas ignition).
When an error occurs in the data related to the operation of the combustion fan 5 at the time of each self-diagnosis, the error code of the combustion fan 5 is set to 45 (a number).
Is displayed on the display of the remote controller.

In this case, in the configuration of the conventional combustion equipment, it is not known at which self-diagnosis timing the error code 45 of the combustion fan was issued, and the reason why the error code 45 of the combustion fan 5 is issued is as follows. A case where there is an abnormality in the drive system of the fan 5 and a case where there is an abnormality in the fan rotation detection sensor 21 for detecting the fan rotation speed of the combustion fan 5;
Even if there is no abnormality in the drive system of these fans or the fan rotation detection sensor 21, even if the exhaust pipe on the exhaust side of the combustion equipment is extended after the installation of the combustion equipment, the combustion conditions do not match the actual exhaust load. The error of the combustion fan 5 is also issued, and it is difficult to determine the cause of the error code 45 simply by looking at the error code of the combustion fan displayed on the remote controller.

In the present embodiment, in order to solve such a problem, for example, an error code 45 is specified as a data collection condition from the condition setting input section 37, and further, a collection corresponding to the data collection condition is performed. As the data, the step number of the sequence program of the combustion control of the combustion control unit 26 when an error is output, the rotation speed data of the combustion fan at the time of occurrence of the error and the immediately preceding data, the flow rate data, the input water temperature data, the hot water supply temperature And the data of the combustion duration time from the time of ignition are set, and the addresses of these data are input from the condition setting input unit 37.

The data of the data collection condition of the error code 45 and the data of each address are stored in the condition setting data holding unit 33.
Is stored. After inputting the condition setting, the worker removes the external display device 31 from the control device 17 and takes it home, and waits for the error code 45 to be displayed on the remote controller.

The combustion equipment performs a normal combustion operation in a state in which the condition setting data holding section 33 holds and stores the data collection conditions and the data of the address of the collection data corresponding to the collection conditions. During the combustion operation, the operating condition collating unit 34 determines whether the operating state of the combustion device is the data collection condition held in the condition setting data holding unit 33, in this example, the error code 45 of the combustion fan 5. It is determined whether or not the operating condition has been issued. When an error code 45 indicating an abnormality of the combustion fan 5 is output from the self-diagnosis unit,
The operating condition collating unit 34 applies the trigger signal to the data copying unit 35 as a condition matching signal.

In response to the trigger signal, the data copy unit 35 collectively copies the data of the address corresponding to the error code 45 held in the condition setting data holding unit 33 from the data stored in the RAM 27, and The copy data is stored in the copy data storage unit 32. In other words, when the error code 45 of the combustion fan is output from the self-diagnosis unit,
The step number of the combustion control program when the error code was issued, the number of revolutions of the combustion fan, the amount of water flow,
Data on the incoming water temperature, the set temperature of hot water supply, and the duration of combustion from the ignition are collectively and simultaneously collected from the data stored in the RAM 27 and stored in the copy data storage unit 32.

The operator of the failure repair receives a notification from the user of the combustion device that the error code 45 is displayed on the remote controller, goes to the installation site of the combustion device with the external display device 31, and displays the external display device 31. It is connected to the control device 17 to check the cause of the error code 45. First, at this time, the data reading unit 38 instructs to read the collected data stored in the copy data storage unit 32.

In response to this read command, the collected data stored in the copy data storage unit 32 is read from the data external transfer unit 36 to the data read unit 38 and displayed on the display unit 40 of the external display device 31. Looking at this display data,
The self-diagnosis timing when the error code 45 is issued is known, and it is known whether the error code 45 was issued at the beginning of the fan startup, at the time of gentle ignition, or at the time of steady combustion.

For example, when the error code 45 is issued during the steady combustion, the fan speed of the combustion fan 5 is reduced.
If the condition of 800 rpm and 1000 rpm or less continues for 10 seconds or more, and the combustion amount calculated from each data of water flow rate, input water temperature, and set temperature of hot water supply was burning at a combustion amount close to No. 16, for example, Assuming the cause of the error from the conditions, the fan rotation speed of the combustion fan 5 is checked both at the initial stage of the fan startup and at the time of slow ignition. After the time elapses, self-diagnosis during steady combustion is performed,
It is determined that the operation of the combustion fan 5 is normal at the initial stage of the fan startup and at the time of mild ignition, and this indicates that there is no abnormality in the imbalance between the combustion conditions and the exhaust load.

When the combustion duration is, for example, 30 minutes, it is considered that the combustion time is slightly longer for the combustion amount of No. 16, and the body temperature of the combustion equipment is considerably increased. Twenty-one Hall ICs are thermally affected and rotation cannot be detected normally.
It is estimated that the error code 45 of the combustion fan 5 is output, for example, where the rotation speed should be detected as rpm, for example, 800 rpm.

Therefore, in this case, only the components of the rotation detecting section (Hall IC) of the fan rotation detecting sensor 21 need to be replaced and repaired. As described above, according to the configuration of the present embodiment, even for a failure with poor reproducibility, data related to the abnormality is reliably collected and held, and after an error code is output, it is analyzed precisely to determine the occurrence of the error. The cause can be ascertained, and the effect that the repair can be completed with minimal replacement of parts can be obtained.

In this embodiment, the control device 17 for the combustion equipment is used.
The side determines whether or not the operating state of the combustion equipment matches the data collection condition given from outside, and when it matches, each data of the address designated from the outside according to the data collection condition is stored in the RAM 27. Since it is configured to collectively copy and store the stored data, it is possible to collectively collect and store a plurality of data at the same time when an abnormality occurs without time delay.
When investigating the cause of the abnormality, the most important related data at the time of the abnormality occurrence can be matched to determine the cause of the abnormality, and as a result, the cause of the abnormality can be accurately and quickly elucidated It becomes possible.

The present invention is not limited to the above-described embodiment, but can adopt various embodiments. For example, in the above-described embodiment, a single-function water heater (a water heater having only a hot-water supply function) has been described as an example of a combustion device. However, the present invention relates to a bath kettle, a combined bath / hot water supply device, The present invention is applied to various combustion devices such as a heating device, a cooling device, a cooling / heating device, and an air conditioner.

In the above embodiment, the condition setting input
37, the data readout unit 38, and the display unit 40 are provided on the external display device 31 separated from the control device 17, but these condition setting input unit 37, the data readout unit 38, and the display unit 40 are provided on the control device 17 side. May be used.

Further, in the above embodiment, the copy data storage section 32 is provided independently of the RAM 27. However, as shown by a chain line in FIG. 1, the copy data storage section 32 is provided in an empty area of the RAM 27. Is also good.

Further, in the above embodiment, the collected data when the operating state of the combustion equipment matches the data collection condition is stored in the copy data storage unit, and thereafter, for example, after resetting the error, the operation of the combustion equipment is stopped. When the operation is restarted and the operation state matches the data collection condition, the collected data is stored again in the copy data storage unit by overwriting, and the latest data that matches the data collection condition is stored in the copy data storage unit. However, unlike the above, the first data stored in the copy data storage unit may be held until the data is transferred or cleared (erased).

In this case, for example, as shown by a broken line in FIG. The re-copy prevention unit 41 monitors whether or not the transfer of the copy data (the data stored in the copy data storage unit 32) by the data external transfer unit 36 has been performed, and monitors the data stored in the copy data storage unit 32. It is monitored whether or not is cleared. Then, while the transfer and clearing of the copy data are not performed, the data copy unit 35 is prevented from storing data in the copy data storage unit 32.

Thus, after the copy data is stored in the copy data storage unit 32, the copy data is prevented from being overwritten until it is transferred or cleared, so that the operating state of the combustion equipment matches the data collection condition. Sometimes the collected data initially stored will be stored and maintained without change.

In a general combustion appliance, the appliance is reset by closing a faucet (water tap) even after an error occurs.
The equipment can be reused. For example, in the above-described example of the operation diagnosis of the combustion fan, it is conceivable that an error of 45 (error code 45) is repeatedly generated. Thus, the overwriting copy of the collected data is prevented again, and the normal operation of the combustion equipment is performed in a state of waiting for the transfer of the copy data stored in the copy data storage unit 32.

[0046]

According to the present invention, there is provided a condition setting data holding section for holding a data collection condition inputted from the outside and an address of collected data corresponding to the data collection condition on the side of the combustion equipment. When the data collection condition is met, each data of the address corresponding to the data collection condition is collectively collected from the control data memory and stored and held. When the sampling conditions are met, the related data group at the same point in time can be sampled at the same time without a time delay, which allows the comparison of the most important related data at the point in time when the error was issued and the occurrence of abnormalities etc. The cause can be clarified, and therefore, it is possible to know at which operation timing of the combustion equipment the error signal of the abnormal operation was issued. , Moreover, it can be determined by comparing the data without mutually time delay of the abnormality occurrence time, exactly the abnormality cause, and it is possible to quickly ascertain.

As described above, the cause of the occurrence of the abnormality can be accurately clarified, so that only the part having the abnormality need be replaced at the time of repairing the failure, so that the efficiency of the repair work can be improved and the normal part can be repaired. Since it is possible to eliminate the waste of replacement together, it is possible to greatly reduce the cost of repairing a failure.

Also, since the combustion equipment itself collects and stores data when the data collection conditions are met,
As in the conventional example, even if a repair worker attempts to reproduce the abnormality, the problem is not easily obtained, and the problem that the data at the time of the abnormality cannot be captured can be solved. Moreover, since the data at the time of abnormality is collected and stored in the combustion equipment itself, the stored data can be analyzed and clarified precisely later, and the cause of the abnormality in the combustion equipment is thoroughly clarified. And the data can be effectively used as data for subsequent instrument development.

Furthermore, since the data collection conditions and the addresses of the collected data corresponding to the conditions are externally input to the condition setting data holding section 33, the data collection conditions and the addresses of the collected data can be freely set. It is possible to change the data collection conditions and the collected data to clarify the cause of the abnormality, and data collection can be performed on a flexible basis.Therefore, there is no restriction on the type and model of the combustion equipment. It is possible to provide a combustion apparatus having an excellent function for performing failure diagnosis, in which the data collection conditions and the collected data can be freely changed and set.

Further, after the data is stored in the copy data storage unit, until the stored data is transferred or the stored data is cleared, re-copying that prevents data from being stored again in the copy data storage unit is performed. In the configuration including the blocking unit, an effect is obtained that data stored in the copy data storage unit at first can be stored and maintained in preparation for data transfer without being updated by overwriting.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a main part of an embodiment of the present invention.

FIG. 2 is a system configuration diagram of the combustion equipment.

FIG. 3 is a block diagram of a combustion device provided with a self-diagnosis unit.

[Explanation of symbols]

 27 RAM 31 External display device 32 Copy data storage section 33 Condition setting data holding section 34 Operating condition collation section 35 Data copy section 36 Data external transfer section 37 Condition setting input section 38 Data read section

Claims (2)

[Claims] 1. A combustion apparatus comprising a control data memory for storing data for combustion control, and a combustion control unit for performing combustion control based on the data stored in the control data memory, wherein data input from the outside is collected. A condition setting data holding unit that holds a condition and an address of sampling data corresponding to the data sampling condition, and compares and matches whether or not the operating state of the burning appliance matches the data sampling condition in the operating state of the burning appliance. An operation condition matching unit that outputs a condition matching signal when the condition matching signal is received from the operating condition matching unit, and collects the collected data of the address given in accordance with the data collection condition from the data in the control data memory. A data copy unit to collectively collect data; a copy data storage unit to store data collectively collected by the data copy unit; A data external transfer unit that receives a data read command from the unit and transfers data stored in the copy data storage unit to a read destination. 2. After the data is stored in the copy data storage unit, re-copying prevents the data from being stored again in the copy data storage unit until the stored data is transferred or the stored data is cleared. The combustion device according to claim 1, further comprising a blocking portion.