JP3466742B2 - Combustion equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion apparatus such as a water heater or a bath pot, and more particularly to a combustion apparatus suitable for automatically checking the operation state of the apparatus. The present invention relates to a combustion device. 2. Description of the Related Art FIG. 3 shows an example of a model of a generally known combustion apparatus. FIG. 1A shows a water heater of a capacity switching type, in which water entering from a water supply pipe 1 is heated by the combustion heat of a burner 2 when passing through a hot water supply heat exchanger 3 to be made hot water. This hot water is guided through the hot water supply pipe 4 to a desired hot water supply place such as a kitchen. The control device 5 rotates the combustion fan 7 when receiving a water input signal from the flow sensor 6, and opens at least one of the solenoid valve 8, the proportional valve 10, and the capacity switching valves 11a and 11b of the gas supply passage 19 by opening. After the igniter electrode 12 is driven to perform spot ignition and the flame is detected by the flame rod electrode 13, the hot water temperature detected by the hot water temperature sensor 15 is controlled by a remote controller.
The valve opening amount of the proportional valve 10 is controlled so as to reach the set temperature set at 14, and the rotation of the combustion fan 7 is controlled in accordance with the combustion amount to control the hot water supply operation. In controlling the hot water supply operation, the control device 5 controls the switching of the capacity switching valves 11a and 11b according to the required amount of heat. When the required amount of heat is small, the capacity switching valve 11
Opening only a, the one-side combustion of the A surface of the burner 2 is performed, and when the required heat amount is large, the capacity switching valve 11b is further opened to perform the multi-surface combustion of the A surface and the B surface. In the drawing, 9 is a fan rotation detection sensor for the combustion fan, 16 is an incoming water temperature sensor, 17
Denotes a water amount control valve for adjusting the water amount. FIG. 3B shows a bath kettle, and the same reference numerals are assigned to the same parts as those of the water heater shown in FIG. 3A. This kind of bath kettle can be controlled by remote control 14 etc.
When the reheating operation is commanded, the control device 5 rotates the circulation pump 20 of the reheating circulation line 18 to circulate the hot water in the bathtub 21 through the reheating circulation line 18. When the flowing 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 spot ignition, and recirculates the hot and cold water passing through the heat exchanger 23. Heating is performed to reheat 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. 3C shows a combined hot water supply device having a reheating function, and the hot water supply heat exchanger 3 performs the same operation as that shown in FIG. In addition, on the reheating heat exchanger 23 side, the same operation as the bath kettle shown in FIG. The operation of the hot water supply and the reheating is performed by the control device 5, and the control device 5 includes a pouring valve such as a solenoid valve.
A water level sensor using a pressure sensor or the like has a function of refilling the hot water produced on the side of the hot water supply heat exchanger 3 by dropping the hot water into the bathtub 21 through the circulation line 18 to open the bath. When the water level of the hot water reaches the set water level set by the remote controller 14 or the like by 26, the pouring valve 25 is closed and the hot water is stopped, and then the circulation pump 20 is started to start the reheating operation. Is what is done. FIG. 2 shows a configuration of a main part of the control device 5, in which a data acquisition unit 27 and a ROM (Read Only Memory) are provided.
28, a data memory 30, an operation control unit 31, and an operation amount calculation unit 32. The data acquisition unit 27 includes various sensors for detecting the operation state of the combustion device, for example, sensors such as a flow sensor 6, a fan rotation detection sensor 9, various temperature sensors 15, 16, 24, a flowing water switch 22, a water level sensor 26, and the like. Capture information. The ROM 28 stores an operation program (operation sequence program) for the combustion apparatus. The data memory 30 is a readable and writable memory such as a RAM (Randam Access Memory). When data corresponding to a command of an operation program, for example, a start-up command of the combustion fan 7 is designated, the designated address of the command is given. The information corresponding to the request is stored at a designated address corresponding to each request of the operation program, such that the information of the ON start of the combustion fan is stored at the designated address. On the other hand, in the data memory 30, the detection information of various sensors acquired by the data acquisition unit 27 is stored at the designated address. The operation control unit 31 reads information required by the program stored in the data memory 30 in accordance with the operation program stored in the ROM 28, and controls a control target element such as an actuator, for example, the solenoid valve 8, the proportional valve 10 or the like. , Capacity switching valves 11a, 11b, water flow control valve 17, circulating pump 20,
Control driving of the combustion fan 7 and the like is performed. An operation amount calculating section 32 calculates an operation amount (control amount) at the time of control driving of the operation control section 31 based on data stored in the data memory 30. For example, in performing the combustion control of the burner 2 in the hot water supply operation, the information of the incoming water temperature, the information of the outgoing water temperature, the information of the set temperature, and the water supply detected by the flow rate sensor 6 are stored in the data memory 30. The operation amount of the increase or decrease in the amount of combustion required to stabilize the tap water temperature to the set temperature by reading the information such as the amount of the hot water is set to the valve opening drive current of the proportional valve 10 (the proportional valve 10 (A valve amount, that is, a gas supply amount is controlled). The operation control unit 31 performs drive control of the control target element based on the operation amount calculated by the operation amount calculation unit 32, for example, controlling the valve opening drive current of the proportional valve 10. As described above, when performing the combustion operation control, the control device 5 of the combustion apparatus controls the information stored in the data memory 30 of the various sensors acquired by the data acquisition unit 27 and the on / off of the actuators and the like. The drive information of the combustion fan 7 is read out in accordance with the progress of the operation program, and the required manipulated variable is calculated by the manipulated variable computing unit 32.
The combustion operation is controlled by the fan rotation control and the valve opening control of the proportional valve 10. When a combustion device of this type is shipped from a factory or when a combustion device set at home or the like is inspected and inspected, an operation program of the combustion device is usually run. Inspection and inspection are performed by actually performing the combustion operation. However, for example, when inspecting the rotation start state of the combustion fan 7, since the operation program is run from the beginning, the combustion fan 7 comes to the step position of the rotation start program. There is a problem that it is necessary to wait till then, and there is a problem that it takes too much time for inspection and inspection. Also, when performing an inspection and inspection, a program dedicated to the inspection is created, and the inspection and inspection are performed based on the instruction of the program dedicated to the inspection. Is run from the beginning to perform the operation of the device, so even if you want to inspect only a specific control target element, you must run the inspection program from the beginning and wait until the step operation to be inspected There was a problem of wasting time. Further, the control device 5 of the conventional combustion device includes:
As described above, since information of various sensors is read out from the data memory 30 and operation control is performed to perform combustion control, for example, a freeze prevention heater, a freeze prevention temperature sensor, Is provided with a heater drive circuit that turns on the freeze prevention heater when the heater drive start temperature (for example, 0 ° C.) is detected,
When the operation state inspection of the heater drive circuit of the combustion device is performed in summer, the installation area of the anti-freezing temperature sensor is set to, for example, 0 ° C. of the heater drive start temperature using dry ice or the like.
It has to be cooled down to below, the operation is very difficult, and there is the inconvenience that the inspection of the control target element of each part of the combustion device cannot be performed smoothly. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a combustion apparatus suitable for quickly, efficiently and smoothly performing inspection and inspection of the operation state of a combustion apparatus. It is to provide a device. The present invention is configured as follows to achieve the above object. That is, the present invention provides a sensor for detecting an operation state of a device, a data acquisition unit for acquiring input data including detection data of the sensor, and a data for storing data acquired by the data acquisition unit at a predetermined address. A memory, an operation amount calculation unit that calculates an operation amount of control using the data stored in the data memory, and an operation control unit that controls the combustion operation based on the operation amount obtained by the operation amount calculation unit. In the combustion apparatus, the data memory includes an acquisition data storage unit that stores the acquisition data acquired by the data acquisition unit at a specified memory address, and an interrupt data storage that stores interrupt data input from a unit other than the data acquisition unit. Department and
When an interrupt data storage command is applied, the interrupt data of the same target as the acquired data is stored in the interrupt data storage location at the same address as the acquired data, and is acquired when a read command specifying the address is applied. If data has been written to both the read designated address of the data storage unit and the interrupt data storage unit, the interrupt data is read out, and if a cancel command specifying the address is issued, the interrupt data storage unit is canceled. It is characterized in that a data rewriting and reading control unit for erasing interrupt data written at a designated address is provided. According to the present invention having the above-described structure, during the combustion operation of the combustion apparatus, sensor detection data from various sensors is acquired by the data acquisition unit, and the acquired data is stored in the acquired data storage unit of the data memory. Stored at the specified address. On the other hand, when interrupt data specifying an address from an external inspection device or the like is added to the interrupt data storage unit of the data memory at the time of inspection or inspection of the combustion device, the interruption data storage of the data memory is performed by the rewrite / read control unit. It is stored in the specified address of the department. When storing this interrupt data, if the data is the same target as the acquired data,
Since the storage of interrupt data is instructed from an external inspection device etc. by specifying the same address as the acquired data, the rewrite / read control unit follows this command and stores the interrupt data in the interrupt data storage location at the same address as the acquired data. I do. For example, when the interruption data for writing is the value of the tapping temperature, it is stored in the interruption data storage position at the same address as the detection data of the tapping temperature sensor stored in the acquired data storage. After the interrupt data is stored in the interrupt data storage unit, for example, when there is a data read request specifying an address by an operation program,
The rewriting / reading control unit reads out the data stored in the interrupt data storage unit when the data is stored at the designated address in the acquired data storage unit and the interrupt data storage unit. Then, desired data processing such as operation amount calculation is performed using the read data to control the combustion operation. For example, when data reading of the freezing prevention temperature sensor is requested after the temperature of −2 ° C. of the freezing prevention temperature sensor is stored in the interruption data storage unit as the interruption data, the rewriting / reading control unit obtains the data. Instead of reading the actual measured value of the freezing prevention temperature sensor stored in the data storage unit, the data of the dummy temperature -2 ° C. stored in the interrupt data storage unit is read. By reading this data, the operation control unit determines that the outside air temperature has reached −2 ° C., and turns on the freeze prevention heater. In this way, the dummy information is stored in the interrupt data storage unit, so that the inspection of the operation state of the freeze prevention heater, which is difficult in summer or the like, is smoothly performed. At the end of the inspection and inspection, in the above case, a cancel command designating the address where the dummy temperature of the freezing prevention temperature sensor is stored is added from the outside, and when this cancel command is added, rewriting is performed. The read controller erases the dummy temperature stored in the interrupt data storage of the freeze prevention temperature sensor. After the data is erased, when a read command for the anti-freezing temperature sensor is added, the true detection data of the anti-freezing temperature sensor stored in the acquired data storage unit is read, and whether to drive the anti-freezing heater is determined. Is determined. Further, when performing an inspection of a combustion device,
In the case of moving to the next device operation after the predetermined condition is satisfied, for example, by storing the predetermined condition data in the interrupt data storage unit, immediately without waiting until the predetermined condition is actually satisfied. The next operation can be performed, and the inspection and inspection can be performed quickly. As described above, according to the present invention, the target inspection operation can be quickly performed by storing the sensor information and the operation information (data) of the actuator to be inspected and inspected in the interrupt data storage section of the data memory. And smoothly. Embodiments of the present invention will be described below with reference to the drawings. The combustion device of the present embodiment is intended for the same combustion devices as those of the various model examples shown in FIG. 3 described above. What is characteristic in this embodiment is that the control device 5
In other words, it took special measures suitable for conducting inspections. FIG. 1 shows the main configuration of this unique means. The characteristic feature of the present embodiment is that the rewriting / reading control unit is added to the components of the conventional example shown in FIG.
At the same time, 33 is added to the memory area of the data memory 30,
The acquisition data storage unit 34 and the interruption data storage unit 35 are provided separately. The acquired data storage unit 34 stores the same information as the information stored in the data memory 30 shown in FIG. 2 at a designated address. In other words, the acquired data storage
Numeral 34 stores acquisition data including detection data of various sensors acquired by the data acquisition unit 27 and operation information (on / off information of the control target element, etc.) requested by the operation program. The interrupt data storage 35 stores interrupt data added from the external command device 36. When an external command device (inspection device) 36 for performing inspection and inspection of the combustion device receives a command for storing interrupt data by designating an address, the rewrite / read control unit 33 stores the interrupt data in the interrupt data storage. It is stored in the designated address of the unit 35. When storing the interrupt data, the external command device 36 has a list of what data is written in each address position of the obtained data storage unit 34, and stores the same target interrupt data as the obtained data. At this time, the external command device 36 issues a command to write interrupt data from the external command device 36 by specifying the same address as the acquired data of the same object. For example, when the dummy information of the hot water temperature is stored as the interrupt data, the same address as the storage address of the hot water temperature stored in the acquired data storage section 34 is designated and the interrupt data of the dummy hot water temperature is stored. External command device 36
And the rewriting and reading control unit 33
In response to this instruction, the dummy hot water temperature data is written to the same address position of the interrupt data storage unit 35 as the hot water temperature storage address of the acquired data storage unit 34. The rewriting / reading control unit 33 outputs the RO
In response to the data read request command of the M28 operation program, it is determined whether data is stored at the address of each of the storage units 34 and 35 to be read, and the data is stored in both the storage units 34 and 35. Sometimes, interrupt data storage
The data on the 35 side is read, and when the calculation is requested, the read data is sent to the manipulated variable calculating unit 32, and when the reading is requested as the operation control data, the read data is sent to the operation control unit 31. When a read command is given by designating an address, the acquired data is stored in the designated address of the acquired data storage unit 34, but the interrupt data storage unit of the same address is stored.
When the interrupt data is not stored in 35, the rewrite / read control unit 33 reads and outputs the data in the acquired data storage unit 34. Further, the rewrite / read control unit 33 erases the interrupt data of the specified address stored in the interrupt data storage unit 35 when a cancel command specifying the address is applied from the external command device 36. I do. As described above, in this embodiment, the operation of the rewriting / reading control unit 33 allows the writing, reading, and rewriting and reading of the interrupt data applied from the external command device 36 in accordance with the cancel command. And control of the cancel operation, the inspection and inspection of the combustion device can be performed quickly, efficiently, and smoothly. That is, as described above, by giving the dummy temperature of the detection temperature of the anti-freezing temperature sensor to the interrupt data storage unit 35 from the external command device 36 side, for example, -2 ° C., the anti-freezing can be smoothly performed even in summer or the like. An inspection of the driving operation of the heater can be performed. Further, when the operation of the next actuator to be inspected is performed when a predetermined condition is satisfied,
By writing and storing data that all of the predetermined conditions are satisfied in the interrupt data storage unit 35, the data is read out, and the operation control unit 31 determines that all of the predetermined conditions are satisfied. Judgment will immediately perform the operation of the actuator or the like to be inspected next, thereby enabling the inspection or inspection of the actuator or the like to be inspected immediately without waiting for the time until the predetermined condition is actually satisfied. Thus, quick and efficient inspection and inspection can be performed without wasting time in inspection and inspection. Further, after the inspection of the combustion device, by deleting the dummy data from the interrupt data storage unit 35, correct data having the same object as the deleted interrupt data is read out from the acquired data storage unit 34. Since the combustion operation is performed, the operation of the combustion operation control after the inspection and inspection is not affected. Further, in addition to detection data of various sensors, control data of an actuator or the like required by an operation program is written in a predetermined address in the acquired data storage unit 34. Can be easily achieved by specifying the same address as the control data stored in the acquired data storage unit 34 and storing the data to be changed in the same address position of the interrupt data storage unit 35. it can. The control data to be changed is stored in the interrupt data storage unit 35, so that the rewriting and reading control unit 33 performs the acquisition data storage unit during the combustion operation.
Since the control data (data to be changed) stored in the interrupt data storage unit 35 is read out prior to the original control data stored in 34, the combustion operation can be smoothly performed under the changed control conditions. Will be performed. The present invention is not limited to the above-described embodiment, but can adopt various embodiments. For example, in the above embodiment, the obtained data storage unit 34 and the interrupt data storage unit 35 are provided by dividing the inside of one data memory 30, but the memory of the obtained data storage unit and the memory of the interrupt data storage unit are separately provided. It may be provided. In addition, these acquired data,
It is desirable that the memory for storing the interrupt data is composed of a writable and erasable non-volatile memory such as an EEPROM, which does not lose data even if a power failure or the like occurs. In the above embodiment, the combustion apparatus shown in FIG. 3 has been described. However, the combustion apparatus to which the present invention is applied is not necessarily limited to the model shown in FIG. The present invention is applied to various other combustion devices such as a combustion-type heating device, a cooling device, a cooling / heating device, and an air conditioner. According to the present invention, the data memory comprises an acquired data storage section and an interrupt data storage section, and responds to respective commands for storing (writing), reading, and canceling interrupt data. Therefore, since the data rewriting and reading control unit for controlling writing, reading, and canceling of the interrupt data according to the command is provided, for example, dummy data or the like is transmitted by an external command from an inspection and inspection device or the like. By storing the data in the interrupt data storage unit, when a request to read the data specifying the address is made, the data in the interrupt data storage unit is read with priority over the data in the acquired data storage unit, and the driving operation using the data is performed. Therefore, it is possible to conduct inspections and inspections of combustion equipment quickly, efficiently and smoothly without wasting time. It becomes possible. When the control condition of the combustion apparatus is changed, the control to specify the same address as the storage address of the obtained data storage unit in which the control condition is stored, and to change the control condition to the interrupt data storage unit The data of the condition can be stored. By doing so, when the data read of the address is requested, the interrupt data is read by the data rewrite control unit with priority, so that the control condition to be changed can be stored. The combustion operation is performed below, and it becomes very easy to change the control conditions of the combustion device. Further, as described above, after writing the dummy data for inspection and inspection in the interrupt data storage unit and performing the inspection and inspection of the combustion device, the address where the dummy data is written is designated by an external command or the like. By adding the cancel command, the data rewriting / reading control unit erases the dummy data stored in the interrupt data storage unit according to the command. Since the combustion operation is performed based on the correct data stored in the combustion device, the operation of the combustion device after the inspection and inspection can be performed without any trouble.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a main part configuration of a combustion device according to the present invention. FIG. 2 is a block diagram of a combustion control unit of a conventional combustion device. FIG. 3 is an explanatory diagram illustrating a general model example of a combustion device. [Description of Signs] 27 Data acquisition unit 28 ROM 30 Data memory 31 Operation control unit 32 Operation amount calculation unit 33 Rewrite / read control unit 34 Acquisition data storage unit 35 Interrupt data storage unit 36 External command device

Continuation of the front page (56) References JP-A-8-135964 (JP, A) JP-A-7-305584 (JP, A) JP-A-3-217719 (JP, A) JP-A-4-174213 (JP) , A) (58) Field surveyed (Int. Cl. ⁷ , DB name) F23N 5/24 F24H 1/10 301

Claims (1)

(57) [Claims 1] A sensor for detecting an operation state of a device, a data acquisition unit for acquiring input data including detection data of the sensor, and data acquired by the data acquisition unit in advance. A data memory to be stored at a specified address; an operation amount calculation unit that calculates an operation amount of control using the data stored in the data memory; and a combustion operation based on the operation amount obtained by the operation amount calculation unit. In the combustion device having an operation control unit for controlling, the data memory is input from an acquisition data storage unit that stores the acquisition data acquired by the data acquisition unit at a specified memory address, and from other than the data acquisition unit. An interrupt data storage unit for storing interrupt data, wherein when an interrupt data storage command is applied, interrupt data of the same target as the obtained data is obtained. Data is stored in the interrupt data storage location at the same address as the data, and when a read command specifying the address is applied, data is written to both the acquisition data storage section and the read specified address of the interrupt data storage section. Is provided with a data rewriting and reading control unit for reading out the interrupt data and erasing the interrupt data written at the specified address of the cancellation in the interrupt data storage unit when a cancel command is designated by specifying an address. Burning device.