JP3967435B2 - Inspection equipment for combustion equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an inspection apparatus for combustion equipment such as a water heater and a bath tub.
[0002]
[Prior art]
FIG. 4 shows a model example of a generally known combustion device. (A) of the figure shows a capacity-switching type water heater, and the water entering from the water supply pipe 1 is heated by the combustion thermal power of the burner 2 and is heated to hot water as it passes through the hot water supply heat exchanger 3. The hot water is led to a desired hot water supply place such as a kitchen through the hot water supply pipe 4.
[0003]
When the control device 5 receives the incoming signal from the flow sensor 6, that is, in step 201 of FIG. 5, a hot water tap (not shown) provided on the distal end side of the hot water supply pipe 4 is opened, and in step 202, When the flow rate of the flow sensor 6 becomes the operating flow rate, in step 203, the combustion fan 7 is rotated, and at least one of the electromagnetic valve 8, the proportional valve 10 and the capacity switching valves 11a and 11b in the gas supply passage 19 is opened. The igniter electrode 12 is turned on to perform spot ignition. After the flame is detected by the frame rod electrode 13 at step 204 in FIG. 5, the tapping temperature detected by the tapping temperature sensor 15 at step 205 is the remote control temperature. The hot water supply operation is controlled so that the set temperature set at 14 is reached.
[0004]
In controlling the hot water supply operation, the control device 5 is given in advance a combustion heat amount at the time of minimum combustion (minimum combustion heat amount) and combustion heat amount at the time of maximum combustion (maximum combustion heat amount). 5 adjusts the magnitude of the valve opening drive current of the proportional valve 10 within a range from the proportional valve opening drive current corresponding to the minimum combustion heat amount to the proportional valve opening drive current corresponding to the maximum combustion heat amount. The valve opening amount of the proportional valve 10 is controlled. At this time, the control device 5 controls the rotation of the combustion fan 7 to control the amount of air supplied from the combustion fan 7 to the burner 2, and by these controls, hot water having a stable set temperature is exchanged for hot water supply. It is made to supply to the desired hot-water supply place through the hot-water supply pipe 4 from the vessel 3.
[0005]
Further, the control device 5 performs switching control of the capacity switching valves 11a and 11b according to the required heat amount. That is, when the required amount of heat is small, only the capacity switching valve 11a is opened to perform one-side combustion of the A side of the burner 2, and when the required amount of heat is large, the capacity switching valve 11b is further opened to perform multi-sided combustion of the A and B surfaces. Do. In the figure, 9 is a fan rotation detection sensor of the combustion fan 7, 16 is a water temperature sensor, and 17 is a water amount control valve for adjusting the water amount.
[0006]
FIG. 4B shows a bath tub, and the same reference numerals are given to the same parts as the water heater shown in FIG. When this type of bath pot is commanded for reheating operation by the remote controller 14 or the like, the control device 5 rotates the circulation pump 20 of the recirculation circulation line 18 to recirculate hot water in the bathtub 21. Circulate through 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 electromagnetic valve 8, burns the burner 2 by spot ignition, and recirculates the hot water passing through the heat exchanger 23. It heats and replenishes hot water in the bathtub 21. Then, when the bath temperature detected by the bath temperature sensor 24 reaches the bath set temperature set by the remote controller 14, the chasing operation is stopped.
[0007]
(C) in FIG. 4 shows a composite water heater having a reheating function, and the hot water supply heat exchanger 3 side performs the same operation as that shown in (a) of FIG. On the reheating heat exchanger 23 side, the same operation as that of the bath shown in FIG. The hot water supply and reheating operation is performed by the control device 5. The control device 5 opens the hot water supply valve 25 such as an electromagnetic valve, thereby reheating the hot water produced on the hot water supply heat exchanger 3 side. It has a function of dropping into the bathtub 21 via the path 18 and filling the hot water, and when the water level of the hot water reaches the set water level set by the remote controller 14 or the like by the water level sensor 26 using a pressure sensor or the like. The hot water filling valve 25 is closed to stop hot water filling, and then the circulation pump 20 is activated to perform a reheating operation.
[0008]
Further, in this type of combined water heater, normally, after the reheating, the temperature maintaining operation of the bath temperature in the temperature maintaining mode is performed for a predetermined time (for example, 4 hours). For example, the circulation pump 20 is activated for a short time every 30 minutes to circulate bathtub hot water, and the bath temperature sensor 24 detects the temperature of the bathtub hot water. When the temperature detected by the bath temperature sensor 24 falls below an allowable range given in advance, reheating is performed by combustion of the burner 2 on the bath side, and the bath water is raised to the bath set temperature. Thus, during the period of the heat retention mode, the bath water temperature is always kept in a state where bathing into the bathtub 21 is possible.
[0009]
When inspecting the combustion equipment as described above, conventionally, for example, the water supply pipe 1 of the combustion equipment is connected to a water pipe, or the gas supply passage 19 is connected to a gas pipe. Water or gas is supplied to the apparatus, the combustion equipment is operated, and the operation state is displayed in real time by a monitor device or the like. Then, an inspector or the like looks at a monitor device or the like to check the operation state of the combustion equipment, or directly examines and judges the components of the combustion equipment.
[0010]
[Problems to be solved by the invention]
However, as described above, in order to actually operate the combustion equipment to perform the inspection, water or gas is required, and the water or gas pipe must be connected to the combustion equipment. There was a problem that the inspection was very troublesome. Further, when the combustion device is operated according to the sequence program, for example, if the flow sensor 6 has failed, in FIG. 5, when it is determined in step 202 whether or not the flow sensor 6 has exceeded the operating flow rate, until when. However, since the flow sensor 6 does not exceed the operating flow rate, the operation of the combustion device does not proceed first, resulting in an error, and it is impossible to determine the failure of the component used for the operation after step 203. There was also.
[0011]
The present invention has been made to solve the above-described conventional problems, and the purpose thereof is to accurately and accurately reproduce all the components of the combustion equipment as required without using water or gas. An object of the present invention is to provide an inspection apparatus for combustion equipment that can be easily inspected.
[0012]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following configuration as means for solving the problems. In other words, the first aspect of the invention includes an operation control unit that controls the combustion operation, and provides a signal to a combustion device of a type in which the combustion operation is controlled according to a sequence program based on sensor signals of various sensors that detect the operation state of the device. An inspection device for connected combustion equipment, the inspection device comprising: a suspect load signal output means for outputting a suspect load signal of various sensors for detecting an operation state of the combustion equipment; and the suspect load signal output means. A suspicious operation control unit having a suspicious load sequence program for operating in accordance with a sequence program of a combustion device, an inspection command output unit for outputting an inspection command for inspection, and suspicious of the suspicious load signal test carried out and the signal connection for the signal connected to the input of the sensor signal of a combustion device corresponding to the load, the test determination of the components of the combustion device takes in the operation signal of the combustion equipment Possess a determination unit, by operating a pattern pseudo load sequence program in correspondence with the sequence program of the combustion apparatus by the pattern false operation control unit, the Moutagu load signal outputted from the pattern false load signal output means Based on the sequence program, the operation control unit performs the operation of the combustion operation, and the inspection determination unit takes in the operation signal of the component of the combustion device based on the suspected load signal and inspects the component of the combustion device. It is a means for solving the problem by having a configuration for making a judgment .
[0014]
In the present invention configured as described above, the suspicious operation control unit has a suspicious operation sequence program for operating the suspicious load signal output means in correspondence with the sequence program of the combustion equipment. When the suspicious load signal output means is operated according to the above, the suspicious load signal output means outputs various suspicious load signals of various sensors for detecting the operation state of the combustion equipment. And this suspected load signal is signal-connected by the signal connection part to the input part of the sensor signal of the combustion equipment corresponding to suspected load.
[0015]
Then, the operation control unit of the combustion device performs the combustion operation control of the device according to the sequence program based on the suspicious load signal, and therefore, the control of the suspicious operation control unit of the inspection apparatus without water or gas, etc. Automatically controls the combustion operation of the combustion equipment.
[0016]
Further, in this embodiment, since the operation control according to the sequence program of the combustion equipment is performed by the simulated load signal from the simulated load signal output means, even if a failure occurs in the constituent elements of the combustion equipment, By adding a dummy simulated load signal to the combustion equipment, the operation control according to the combustion equipment sequence program is continued, and the operation operation according to the combustion equipment sequence program can be performed from the beginning to the end. It becomes possible.
[0017]
In the present invention, the inspection judgment of the combustion equipment is automatically performed by taking in the operation signal of the combustion equipment and performing the inspection judgment of the components of the combustion equipment by the inspection judgment section or the like. And it becomes possible to test | inspect a combustion apparatus correctly with sufficient reproducibility, and the said subject is solved.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the present embodiment, the same reference numerals are assigned to the same name portions as in the conventional example, and the duplicate description thereof is omitted. The combustion apparatus inspection apparatus according to the present embodiment is applied as an inspection apparatus for various combustion apparatuses as shown in FIG. 4, for example. FIG. 1 illustrates the combustion apparatus inspection apparatus according to the present embodiment. The control configuration is shown in a block diagram in a state connected to the combustion device 41. As shown in the figure, an inspection device 40 according to the present embodiment is an inspection device that is signal-connected to a combustion device 41 that includes a control data memory 35 and an operation control unit 36, and includes a suspicious load signal output means 30, A signal connection unit 31, an inspection command output unit 32, a suspicious operation control unit 33, and an inspection determination unit 34 are included.
[0019]
The control data memory 35 and the operation control unit 36 of the combustion device 41 are provided in the control device 5, and the operation control unit 36 calls the data stored in the control data memory 35 according to the sequence program, and combusts the device 41. Control the operation. The control data memory 35 stores data necessary for operation control, such as data acquired by various sensors that detect the operation state of the combustion equipment, such as the flow sensor 6, the frame rod electrode 13, and the incoming water temperature sensor 16. ing.
[0020]
The control device 5 of the combustion device 41 is formed by a CPU (Central Processing Unit) 49 shown in FIG. 2, and the inspection command output unit 32, the suspicious operation control unit 33, and the inspection determination unit 34 of the inspection device 40 are connected to the CPU 48. The CPU 48 is signal-connected to the CPU 49 via the signal connection unit 50.
[0021]
The suspicious load signal output means 30 of the inspection device 40 outputs a suspicious load signal of the various sensors (for example, the flow sensor 6 and the frame rod electrode 13) that detect the operation state of the combustion device 41. Specifically, the suspicious load signal output means 30 includes, for example, an oscillator 37, a relay 38, a variable resistor 39, and the like as shown in FIG. A suspicious load signal of the flow sensor 6 is output by oscillating a frequency signal having the same value as the frequency output from the flow sensor 6 when the flow sensor 6 of 41 becomes an operating flow rate.
[0022]
When an inspection start switch (not shown) provided in the inspection device 40 is turned on, the inspection command output unit 32 receives this ON signal, outputs an inspection command for inspection, and performs suspicious operation. It adds to the control part 33.
[0023]
The suspicious operation control unit 33 has a suspicious operation sequence program. This suspicious operation sequence program is a program for operating the suspicious load signal output means 30 in correspondence with the sequence program of the combustion equipment 41, and the suspicious operation control unit 33 performs an inspection from the inspection command output unit 32. In response to the command, the suspicious load signal output means 30 is operated in accordance with the sequence program of the combustion device 41 in accordance with the suspicious operation sequence program.
[0024]
The signal connection unit 31 connects the suspected load signal output from the suspected load signal output means 30 to the sensor signal input unit of the combustion device 41 corresponding to the suspected load. Specifically, as shown in FIG. 2, the signal connection unit 31 connects the oscillator 37 of the inspection device 40 to the terminal 43 of the flow sensor 6 of the combustion device 41, and the relay 38 of the inspection device 40 is connected to the combustion device 41. The variable resistor 39 of the inspection apparatus 40 is connected to the terminal 44 of the flame rod electrode 13, and the signal is connected to the terminal 45 of the incoming water temperature sensor 16 of the combustion device 41.
[0025]
The inspection determination unit 34 takes in an operation signal of the combustion device 41 and performs an inspection determination on the components of the combustion device 41. The inspection determination unit 34 acquires, for example, captured data of various sensors of the combustion device 41 from the control data memory 35 of the combustion device 41, compares the captured data with inspection determination information given in advance, and the like. Judgment of the components of
[0026]
The present embodiment is configured as described above. Next, the inspection operation of the combustion equipment 41 using the inspection apparatus 40 of the present embodiment will be described based on the flowchart shown in FIG. First, in step 101 of FIG. 3, when an inspection start switch provided in the inspection device 40 is turned on, an inspection command is output from the inspection command output unit 32 in step 102, and this inspection command is sent to the suspicious operation control unit 33. Added to. Then, the suspicious operation control unit 33 outputs a suspicious flow sensor operating flow rate as a suspicious load signal corresponding to the operating flow rate of the flow sensor 6 of the combustion device 41 in step 103 according to the suspicious operation sequence program. . Specifically, the suspected flow sensor operation flow rate is output by outputting a frequency signal from the oscillator 37 when the detection signal of the flow sensor 6 reaches the operation flow rate of the combustion device 41.
[0027]
Then, this frequency signal is input to the terminal 43 of the flow sensor 6 of the combustion device 41 via the signal connection unit 31 and applied to the control data memory 35 in the CPU 49. Then, in step 203 of FIG. 3, as in step 203 of FIG. 5, the operation control unit 36 of the combustion device 41 rotates the combustion fan 7, the electromagnetic valve 8, the proportional valve 10, and the capacity switching valves 11 a and 11 b. At least one of the valves is opened and the igniter electrode 12 is turned on.
[0028]
Next, the rotation signal of the combustion fan 7, the solenoid valve 8, the proportional valve 10, the valve opening signals of the capacity switching valves 11a and 11b, and the ON signal of the igniter electrode 12 are taken into the control data memory 35 and further inspected. The suspicious operation control unit 33 and the inspection determination unit 34 of the device 40 are taken in. Then, in Step 104 of FIG. 3, Moutagu operation control unit 3 3 performs determination of whether the igniter electrode 12 is turned on, when it is determined that the igniter electrode 12 is turned ON, at step 105, combustion equipment 41 The suspected frame rod electrode on signal is output as a suspected load signal corresponding to the on signal of the frame rod electrode 13. More specifically, the simulated frame rod electrode ON signal is output as an ON signal of the relay 38, and is input to the terminal 44 of the frame rod electrode 13 of the combustion device 41 via the signal connection unit 31. 35.
[0029]
Then, in step 205 in FIG. 3, the operation control unit 36 of the combustion device 41 performs hot water supply operation control similar to that in step 205 in FIG. 5, that is, valve opening amount control of the proportional valve 10, rotation control of the combustion fan 7, etc. Operation control is performed.
[0030]
When the ON signal of the igniter electrode 12 is not confirmed in step 104 of FIG. 3, for example, the state in which the ON signal of the igniter electrode 12 is not confirmed by the inspection determination unit 34 is longer than a predetermined reference time, for example. Whether or not the igniter electrode 12 is out of order is determined when the reference time is exceeded.
[0031]
In addition, after the operation control by the operation control unit 36 in step 203 of FIG. 3, the inspection determination unit 34 takes in the rotation signal of the combustion fan 7 from the control data memory 35, and in step 203, the combustion device 41 is connected to the combustion fan 7. When the rotation signal of the combustion fan 7 is not detected even though the engine is rotated, it is determined that the combustion fan 7 is in failure. Further, the inspection determining unit 34 controls the electromagnetic valve 8 even though the electromagnetic valve 8, the proportional valve 10, and the capacity switching valves 11a and 11b are opened by the operation control of the operation control unit 36 in Step 203 of FIG. When the valve opening signals of the proportional valve 10 and the capacity switching valves 11a and 11b are not detected, it is determined that each valve has failed.
[0032]
In this way, the inspection determination unit 34 captures the captured data in the control data memory 35 of the combustion device 41 and configures the combustion device 41 in accordance with the sequence program of the combustion device 41 and the suspicious operation sequence program of the inspection device 40. Element failure determination and the like are performed.
[0033]
Moreover, the failure determination operation of the combustion device is also performed as follows. That is, when the hot water supply operation control is performed by the operation control unit 36 of the combustion device 41 in step 205 of FIG. 3, the low load input as the suspected load signal of the incoming water temperature sensor 16 from the suspected load signal output means 30. A signal corresponding to the water temperature is input to the terminal 45 of the incoming water temperature sensor 16 via the signal connection unit 31. Then, this signal is captured in the control data memory 35, and the operation control unit 36 of the combustion device 41 captures the low water temperature data captured in the control data memory so that the hot water supply temperature becomes the hot water supply set temperature of the remote controller. In order to perform hot water supply operation control, the opening degree of the proportional valve 10 should be increased and the control should be performed in the direction of increasing the rotational speed of the combustion fan 7.
[0034]
Therefore, the inspection determination unit 34 of the inspection device 40 takes in the signal of the opening degree (opening amount) of the proportional valve 10 via the control data memory 35 of the combustion device 41, and further receives the signal of the rotational speed of the combustion fan 7. It is taken in via the control data memory 35, and it is determined whether or not the valve opening amount of the proportional valve 10 and the rotational speed of the combustion fan 7 are controlled to be increased. It is determined that the combustion fan 7 has failed.
[0035]
As described above, in the present embodiment, the suspicious operation control unit 33 outputs the suspicious load signals of the various sensors of the combustion device 41 from the suspicious load signal output means 30 in accordance with the suspicious operation sequence program. In addition to the signal input parts of various sensors of the equipment 41, the operation state of the combustion equipment 41 under the control of the operation control part 36 performed based on this suspicious load signal is taken into the suspicious operation control part 33, so The suspicious operation according to the sequence program is freely performed, and the operation determination state of the combustion device 41 is captured by the inspection determination unit 34, whereby the inspection determination of the components of the combustion device 41 is automatically performed.
[0036]
According to this embodiment, as described above, the suspicious load signal output unit 30 is operated by the suspicious operation control unit 33 according to the suspicious operation sequence program, and is output from the suspicious load signal output unit. Since the combustion device 41 can be operated according to the sequence program by the signal, the control operation of the combustion device 41 can be performed according to the sequence program without water or gas.
[0037]
And the operation state of the combustion device 41 performed by the suspicious load signal output from the suspicious load signal output means 30 is taken in by the inspection determination unit 34, so that it is output after a sensor signal such as a failure determination of the combustion device 41 is inputted. It is very easy and accurate to make inspection judgments such as judgment of whether or not it has changed in the process.
[0038]
Furthermore, when water or gas is actually supplied to the combustion device 41 to operate the combustion device as in the conventional case, when a component of the combustion device 41 has a failure, the combustion device 41 is in the middle of the sequence program. However, according to the present embodiment, the suspicious load signal may not be determined according to the sequence program thereafter. In order to perform operation control according to the sequence program of the combustion device 41 by the suspicious load signal from the output means 30, even if a failure occurs in the component of the combustion device 41, the dummy suspicious load signal is burned. By adding to the equipment 41, the operation control according to the sequence program of the combustion equipment 41 can be continued.
[0039]
Therefore, it is possible to carry out the operation operation according to the sequence program of the combustion device 41 from the beginning to the end, and to perform all the inspection judgments of the components of the combustion device 41 used for the operation control without delay.
[0040]
In addition, this invention is not limited to the said embodiment example, Various aspects can be taken. For example, in the embodiment described above, the inspection determination unit 34 is provided in the inspection device 40, but instead of providing the inspection determination unit 34 in the inspection device 40, for example, signal connection is made to the inspection device 40 using wire or wireless. You may provide in the host computer etc. of a service station.
[0041]
As described above, even when the inspection determination unit 34 is provided outside the inspection device 40, the same effects as those of the above-described embodiment can be achieved by signal-connecting the inspection device 40 and the inspection determination unit 34. However, by providing the inspection determination unit 34 in the inspection device 40, it is possible to perform inspection determination such as failure determination of the combustion device 41 more quickly, and it is possible to quickly cope with the failure.
[0042]
Further, in the above embodiment, an example in which the hot water supply operation in the water heater shown in FIG. 4A is performed according to the suspicious operation sequence program of the suspicious operation control unit 33 will be described. Although the example of performing failure determination of the proportional valve 10, the capacity switching valves 11a and 11b, and the combustion fan 7 has been described, the inspection apparatus of the present invention includes various combustion devices 41 including the combustion device 41 shown in FIG. The operation control operation can be performed in correspondence with the sequence program of the combustion device 41 using the suspicious operation sequence program, whereby the inspection judgment of various components provided in the combustion device 41 is performed. It can be performed.
[0043]
【The invention's effect】
According to the present invention, the suspicious load signal output means is operated in accordance with the suspicious operation sequence program in correspondence with the sequence program of the combustion equipment, whereby the suspicious load signals of various sensors for detecting the operation state of the combustion equipment are obtained. Since it is added to the input part of the sensor signal of the combustion device corresponding to the suspicious load, the operation control operation of the combustion device can be performed without actually supplying water or gas to the combustion device. For this reason, by exchanging signals between the inspection device and the operation control unit of the combustion equipment, it is possible to easily and reliably inspect and judge the components of the combustion equipment without water or gas.
[0044]
In addition, when water or gas is actually supplied to the combustion device to operate the combustion device, the operation of the combustion device stops in the middle of the sequence program if there is a failure in the components of the combustion device. However, according to the present invention, the sequence of the combustion equipment can be determined by the simulated load signal from the simulated load signal output means. In order to perform operation control according to the program, even if a failure occurs in the components of the combustion equipment, the operation control according to the combustion equipment sequence program is continued by applying a dummy simulated load signal to the combustion equipment. Can be done. Therefore, it is possible to carry out the operation operation according to the sequence program of the combustion equipment from the beginning to the end, and to perform all the inspection judgments of the components of the combustion equipment used for the operation control without delay.
[0045]
In addition, according to the present invention having the inspection determination unit that takes in the operation signal of the combustion device and performs the inspection determination of the components of the combustion device, it becomes possible to make the inspection determination of the combustion device more quickly. It is possible to quickly deal with failures and the like.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a control configuration of an embodiment of a combustion equipment inspection apparatus according to the present invention in a state connected to a combustion equipment.
FIG. 2 is a main part configuration diagram showing a circuit configuration of the above embodiment in a connected state with a combustion device.
FIG. 3 is a flowchart showing a suspicious driving operation using the inspection apparatus of the embodiment.
FIG. 4 is an explanatory diagram showing a model example of a combustion device.
FIG. 5 is a flowchart showing an example of a hot water supply operation of the combustion device.
[Explanation of symbols]
30 Suspicious load signal output means 31 Signal connection part 32 Inspection command output part 33 Suspicious operation control part 34 Inspection judgment part 36 Operation control part 40 Inspection apparatus

Claims (1)

An inspection device for a combustion device having an operation control unit for controlling the combustion operation and connected to a combustion device of a type in which the combustion operation is controlled according to a sequence program based on sensor signals of various sensors for detecting the operation state of the device. The inspection apparatus outputs a suspicious load signal output means for outputting a suspicious load signal of various sensors for detecting an operation state of the combustion equipment, and associates the suspicious load signal output means with a sequence program of the combustion equipment. A suspicious operation control unit having a suspicious load sequence program for operation, an inspection command output unit for outputting an inspection command for inspection, and a sensor signal of the combustion equipment corresponding to the suspicious load signal and signal connections for the signal connected to the input of, possess an inspection determination unit for inspecting the determination of the components of the combustion device takes in the operation signal of the combustion equipment, the typical pseudo The operation according to the sequence program based on the suspicious load signal output from the suspicious load signal output means by operating the suspicious load sequence program corresponding to the sequence program of the combustion device by the conversion control unit. The operation of the combustion operation by the control unit is performed, and the inspection determination unit is configured to take the operation signal of the component of the combustion device based on the suspected load signal and perform the inspection determination of the component of the combustion device. Inspection equipment for combustion equipment.

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