JP7028599B2 - Combustion system - Google Patents

Description

The present invention relates to a combustion system using a combustion control device that controls combustion in the combustion device.

Conventionally, as this type of combustion system, a combustion system including a combustion device equipped with an ignition device and a burner and a combustion control device for controlling the operation of the combustion device according to a predetermined combustion sequence has been used. (See, for example, Patent Document 1).

In this combustion system, the operation sequence from the start to the stop of the combustion device is defined as a combustion sequence. For example, the operation sequence from the start to the stop of the combustion device is "start check", "pre-purge", "waiting for ignition", "pilot ignition", "pilot only", "main ignition", "main stability", "main stability". Each combustion sequence is defined, such as "steady combustion", "post-purge", and "stop".

Japanese Unexamined Patent Publication No. 2011-208921 Japanese Unexamined Patent Publication No. 2017-138018

For example, in a heat treatment system using an electric heater, it is possible to easily know the amount of energy used by grasping the electric power on the control side. However, in a combustion system using a burner, there is no choice but to install a power measuring instrument and a gas flow rate measuring instrument that measures the flow rate of fuel gas, and measure the power consumption and fuel consumption with these instruments. × It is not possible to uniformly grasp the amount of energy used on the control side, such as voltage = electric power.

That is, in the conventional combustion system, if it is desired to grasp the amount of energy used, it is necessary to install a device for power monitoring and a device for gas flow rate monitoring, which results in high cost.

In Patent Document 2, a signal indicating the operating state of the ignition device, a signal indicating the fuel supply state to the burner, a signal indicating the air supply state to the burner, a flame detection signal indicating the intensity of the flame of the burner, and a flame detection signal indicating the strength of the flame of the burner are used. Combustion control information including at least information indicating the presence or absence of a flame judged from the value of this flame detection signal is collected and accumulated at a predetermined cycle, and this combustion control information is used as trend data for combustion control in each combustion sequence of the combustion device. It is displayed as a graph in a format that shows the relationship with the time zone.

However, in the combustion system shown in Patent Document 2, although the time required for each combustion sequence can be known, the amount of electricity consumed and the amount of fuel consumed in each combustion sequence cannot be grasped.

The present invention has been made to solve such a problem, and the purpose of the present invention is to easily use energy without installing a device for power monitoring or a device for gas flow rate monitoring. The purpose is to provide a combustion system that can grasp the energy.

In order to achieve such an object, the present invention controls the operation of a combustion device (20) equipped with at least an ignition device (8) and a burner (6, 7) according to a predetermined combustion sequence. In the combustion system (100) provided with the combustion control device (2), a signal indicating the operating state of the ignition device, a signal indicating the fuel supply state to the burner, a signal indicating the air supply state to the burner, and a burner. Combustion control information collecting unit configured to collect at least combustion control information including at least the flame detection signal indicating the strength of the flame and the information indicating the presence or absence of the flame judged from the value of this flame detection signal. (2-1), the combustion control information storage unit (2-2) that stores the combustion control information collected by the combustion control information collection unit in chronological order, and the combustion control information stored in the combustion control information storage unit. Combustion sequence time zone specifying part (2-3) configured to specify the time zone of each combustion sequence from the start to the stop of the combustion device based on, and the unit time determined for each combustion sequence. The unit power consumption storage unit (2-5) that stores the estimated value of the per unit power consumption as the unit power consumption, and the estimated value of the fuel consumption per unit time determined for each combustion sequence. The unit fuel consumption storage unit (2-6) stored as the unit fuel consumption, the time zone of each combustion sequence specified by the combustion sequence time zone identification unit, and each combustion stored in the unit power consumption storage unit. A combustion sequence time and a unit period power consumption calculation unit (2-7) configured to calculate the power consumption for each predetermined unit period of the combustion device based on the unit power consumption of the sequence. Fuel consumption for each predetermined unit period of the combustion device based on the time zone of each combustion sequence specified by the band identification unit and the unit fuel consumption of each combustion sequence stored in the unit fuel consumption storage unit. It is characterized by including a unit period fuel consumption calculation unit (2-8) configured to calculate the amount.

In the present invention, the combustion sequence time zone specifying unit specifies the time zone of each combustion sequence from the start to the stop of the combustion device based on the combustion control information stored in the combustion control information storage unit. For example, "start check", "pre-purge", "waiting for ignition", "pilot ignition", "pilot only", "main ignition", "main stable", "steady combustion", "post-purge", "stop", etc. Identify the time zone for each combustion sequence. The power consumption calculation unit for each unit period is the time zone of each combustion sequence specified by the combustion sequence time zone specification unit and the unit power consumption determined for each combustion sequence (power consumption per unit time). Based on the estimated value), the power consumption of the combustion device for each unit period is calculated. The fuel consumption calculation unit for each unit period is the time zone of each combustion sequence specified by the combustion sequence time zone specification unit and the unit fuel consumption amount (fuel consumption per unit time) specified for each combustion sequence. Based on the estimated value), the fuel consumption for each predetermined unit period of the combustion device is calculated.

In the present invention, the unit power consumption of each combustion sequence, which is the basis for calculating the power consumption for each unit period in the power consumption calculation unit for each unit period, is the power consumption per unit time (for example, 1 minute). It is defined as an estimated value of consumption. In addition, the unit fuel consumption of each combustion sequence, which is the basis for calculating the fuel consumption for each unit period in the fuel consumption calculation unit for each unit period, is the fuel consumption per unit time (for example, 1 minute). It is defined as an estimated value of. Therefore, it is possible to obtain the amount of power consumption and the amount of fuel consumed for each unit period (for example, one hour) without installing a device for power monitoring or a device for gas flow rate monitoring, and energy can be easily obtained. It becomes possible to grasp the usage amount of.

In the above description, as an example, the components on the drawing corresponding to the components of the invention are shown by reference numerals in parentheses.

As described above, according to the present invention, the estimated value of the power consumption per unit time is set as the unit power consumption for each combustion sequence, and the estimated value of the fuel consumption per unit time is the unit fuel. The consumption amount is determined for each combustion sequence, and the power consumption for each unit period is calculated based on the time zone of each combustion sequence specified by the combustion sequence time zone specification unit and the unit power consumption of each combustion sequence. In order to calculate the fuel consumption for each unit period based on the time zone of each combustion sequence specified by the combustion sequence time zone identification unit and the unit fuel consumption of each combustion sequence, the power monitor It is possible to easily grasp the amount of energy used without installing equipment for fuel consumption or equipment for gas flow rate monitoring.

FIG. 1 is a diagram showing a main part of a combustion system according to an embodiment of the present invention. FIG. 2 is a diagram illustrating the configuration of a combustion system using only the main burner. FIG. 3 is a time chart of the combustion sequence from the start of the combustion device to the steady combustion. FIG. 4 is a functional block diagram of a main part of the combustion control device according to the first embodiment. FIG. 5 is a flowchart for explaining the operation of the combustion control device according to the first embodiment. FIG. 6 is a diagram showing a table associating the time zone of each combustion sequence with the unit power consumption (estimated value of the power consumption per unit time). FIG. 7 is a diagram showing a table associating the time zone of each combustion sequence with the unit fuel consumption (estimated value of the fuel consumption per unit time). FIG. 8 is a diagram showing a display example of the amount of electric power consumed for each unit period. FIG. 9 is a diagram showing a display example of fuel consumption for each unit period. FIG. 10 is a functional block diagram of a main part of the combustion control device according to the second embodiment. FIG. 11 is a flowchart for explaining the operation of the combustion control device according to the second embodiment. FIG. 12 is a diagram showing a display example of the cost of power consumption (power cost) for each unit period. FIG. 13 is a diagram showing a display example of the cost of fuel consumption (fuel cost) for each unit period. FIG. 14 is a diagram showing an example in which the cost of power consumption for each unit period (electric power cost) and the cost of fuel consumption for each unit period (fuel cost) are superimposed and displayed. FIG. 15 is a functional block diagram of a main part of the combustion control device according to the third embodiment. FIG. 16 is a flowchart for explaining the operation of the combustion control device according to the third embodiment. FIG. 17 is a diagram showing a display example of the total value (total cost) of the energy cost for each unit period. In FIG. 18, the power consumption per unit period and the fuel consumption per unit period required by the combustion control device are sent to a remote monitoring device (remote monitoring device) connected via the Internet. It is a figure which shows the example.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a main part of a combustion system according to an embodiment of the present invention. The combustion system 100 includes a combustion device 1, a combustion control device 2, a fuel flow path 3, and an air flow path 4.

The combustion equipment 1 includes a combustion chamber 5, a main burner 6 that heats the inside of the combustion chamber 5, a pilot burner 7 that ignites the main burner 6, an ignition device (IG) 8 that ignites the pilot burner 7. It includes a flame detector 9 that detects the intensity of the flame of the burners (pilot burner 7 and the main burner 6), and a temperature sensor 10 that detects the temperature inside the combustion chamber 5.

The fuel flow path 3 is a flow path for supplying fuel to the combustion equipment 1, and is a main flow path 3a to which fuel is supplied from the outside, a first flow path 3b branched from the main flow path 3a, and a second flow path. It is composed of a road 3c. The first flow path 3b is connected to the main burner 6, and the second flow path 3c is connected to the pilot burner 7. Further, a gas pressure switch 15 is provided in the main flow path 3a, safety shut-off valves 11 and 12 and a damper (fuel flow rate adjusting damper) 19 are provided in the first flow path 3b, and the second flow path 3c is provided. Is provided with safety shut-off valves 13 and 14.

One end of the air flow path 4 is connected to the blower 16 and the other end is connected to the first flow path 3b. The air discharged from the blower 16 is supplied to the main burner 6 together with the fuel (gas) via the first flow path 3b. Further, the air flow path 4 is provided with a wind pressure switch (air flow switch) 17 and a damper (air flow rate adjusting damper) 18.

In the air flow path 4, the air flow rate adjusting damper 18 is driven by the control motor M in linkage with the fuel flow rate adjusting damper 19. The control motor M includes a high opening position sensor HS that detects that the opening positions of the dampers 18 and 19 have reached a predetermined high opening position, and a low that detects that the opening positions of the dampers 18 and 19 have reached a predetermined low opening position. An opening position sensor LS is provided.

The combustion control device 2 includes a gas pressure signal from the gas pressure switch 15, an air pressure signal from the wind pressure switch 17, a flame detection signal from the flame detector 9 (a signal indicating the intensity of the flame of the burner), and a temperature sensor 10. A temperature detection signal or the like is input, and a control signal is output to the safety shutoff valves 11 to 14, the ignition device 8, the blower 16, the dampers 18, 19 and the like. As a result, the operation of the combustion device 20 whose component is surrounded by the alternate long and short dash line in the figure is controlled.

Depending on the type of the combustion device 20, there are a type that extinguishes the flame of the pilot burner 7 when the ignition of the main burner 6 is completed, a type that continues the flame of the pilot burner 7 even after the ignition of the main burner 6, and the like. In the former type, 9 first detects the flame intensity of the pilot burner 7, and then detects the flame intensity of the main burner 6. In the latter type, the flame intensities of the pilot burner 7 and the main burner 6 are detected together.

In the present specification, both the pilot burner 7 and the main burner 6 are referred to as burners, and the flame detected by the flame detector 9 is referred to as a burner flame. FIG. 1 shows a type in which the flame of the pilot burner 7 is continued even after the ignition of the main burner 6, and the flame detector 9 detects the flames of the pilot burner 7 and the main burner 6 as the flame of the burner.

Further, in the combustion device 20, the air flow path 4, the blower 16, and the air flow rate adjusting damper 18 constitute an air supply system 101 to the combustion chamber 5, and the fuel flow path 3 (3a, 3b, 3c) and the fuel flow path 3 (3a, 3b, 3c). The safety shutoff valves 11 to 14 and the fuel flow rate adjusting damper 19 constitute a fuel supply system 102 to the combustion chamber 5.

There is also a type in which only the main burner is used without providing a pilot burner, and in that type, as shown in FIG. 2, the flow path (secondary flow) is bypassed between the inlet side and the outlet side of the main flow path 3a. A road) 3c is provided, and a fuel flow rate adjusting damper 19 is installed between the confluence of the main flow path 3a and the sub-flow path 3c on the outlet side and the burner 6. In this case, the burner 6 serves as both the main burner and the pilot burner, and the pilot burner 7 becomes unnecessary.

In this combustion system 100 (FIG. 1), the operation sequence from the start to the stop of the combustion device 20 is defined as a combustion sequence. For example, as the operation sequence from the start to the stop of the combustion device 20, "start check", "pre-purge", "waiting for ignition", "pilot ignition", "pilot only", "main ignition", "main stability", Each combustion sequence is defined, such as "steady combustion", "post-purge", and "stop".

FIG. 3 shows a time chart of the combustion sequence from the start of the combustion device 20 to the steady combustion. When the combustion control device 2 has a start input (point t1 shown in FIG. 3A), the combustion control device 2 sends a drive command in the opening direction to the control motor M (point t1 shown in FIG. 3D) from the blower 16. Start blowing air to the air flow path 4 (point t1 shown in FIG. 3B). As a result, the dampers 18 and 19 are opened, and the pressure in the air flow path 4 is increased.

Then, when the pressure in the air flow path 4 increases (the pressure of the air in the combustion chamber 5 increases) and the pressure in the air flow path 4 reaches a predetermined value, the wind pressure switch 17 is turned on (FIG. 3 (c). ) T2 points). The period P1 from the t1 point to the t2 point is the time zone of the "start check".

When the combustion control device 2 detects that the wind pressure switch 17 is turned on and the high opening position sensor HS has reached the high opening position of the dampers 18 and 19 (t3 shown in FIG. 3 (e)). Point), the time counting of the pre-purge time S1 is started from this point in time.

After the lapse of the pre-purge time S1, the combustion control device 2 sends a drive command in the closing direction to the control motor M (point t4 shown in FIG. 3D). As a result, the openings of the dampers 18 and 19 are closed. Normally, the period from the t3 point to the t4 point is called the "pre-purge" time zone, but in the present embodiment, the period from the t2 point to the t3 point is also included in the "pre-purge" time zone. .. That is, in the present embodiment, the period P2 from the t2 point to the t4 point is set as the “pre-purge” time zone.

When the combustion control device 2 detects that the opening positions of the dampers 18 and 19 have reached the low opening position (t5 point shown in FIG. 3F), the low opening position sensor LS has a predetermined waiting time S2. After that, the safety shut-off valves (pilot valves) 13 and 14 were opened (t6 point shown in FIG. 3 (g)), and the ignition device (ignition) 8 was activated (t6 point shown in FIG. 3 (h)). The pilot burner 7 is ignited (point t6 shown in FIG. 3 (i)). The period P3 from the t4 point to the t6 point is the time zone of "waiting for ignition".

When the combustion control device 2 ignites the pilot burner 7, it waits for the elapse of the time S3, which is the sum of the pilot ignition time and the pilot only time, and opens the safety shut-off valves (main valves) 11 and 12 (Fig.). (T8 point shown in 3 (j)), the main burner 6 is ignited (t8 point shown in FIG. 3 (k)). In this case, the period during which the ignition device 8 is operated, that is, the period P4 from the t6 point to the t7 point shown in FIG. 3 (h) is the time zone of "pilot ignition", and the period P5 from the t7 point to the t8 point. Is the "pilot only" time zone.

When the combustion control device 2 ignites the main burner 6, the combustion control device 2 waits for the elapse of the time S4, which is the sum of the main ignition time and the main stabilization time, and starts proportional control of the opening degrees of the dampers 18 and 19 (FIG. At t10 point shown in 3 (d)), it shifts to steady combustion. Of the period from t8 point to t10 point, the period P6 from t8 point to t9 point is the time zone of "main ignition", and the period P7 from t9 point to t10 point is the time zone of "main stable". Yes, the period P8 after the t10 point is the time zone of "steady combustion".

When the combustion device 20 is stopped, the combustion is stopped according to the combustion sequence of "post-purge" and "stop". Although the period of "post-purge" and "stop" is not shown in FIG. 3, the description will proceed with the "post-purge" time zone as P9 and the "stop" time zone as P10.

In the present embodiment, the combustion control device 2 that performs an operation according to such a combustion sequence has a "function of collecting combustion control information", a "function of accumulating the collected combustion control information", and a "combustion sequence". "Function to specify the time zone of the combustion device", "Function to calculate the power consumption for each unit period of the combustion device", "Function to calculate the fuel consumption for each unit period of the combustion device", and "Calculation". It is provided with a function to output the amount of power consumed and the amount of fuel consumed for each unit period of the combustion device.

[Embodiment 1]
FIG. 4 shows a functional block diagram of a main part of the combustion control device 2 according to the first embodiment. The combustion control device 2 is realized by hardware including a processor and a storage device, and a program that realizes various functions in cooperation with these hardware.

The combustion control device 2 has a combustion control information collecting unit 2-1, a combustion control information storage unit 2-2, a combustion sequence time zone specifying unit 2-3, and a combustion sequence as functional units peculiar to the present embodiment. Time zone storage unit 2-4, unit power consumption storage unit 2-5, unit fuel consumption storage unit 2-6, unit period power consumption calculation unit 2-7, and unit period fuel consumption It includes a calculation unit 2-8, a unit period power consumption storage unit 2-9, a unit period fuel consumption storage unit 2-10, and an output unit 2-11.

Note that FIG. 4 shows an excerpt of only the functional unit peculiar to the present embodiment provided in the combustion control device 2. Further, in FIG. 4, the configuration of the combustion device 20 is omitted because it is shown in FIG.

Hereinafter, the functions of each part of the combustion control device 2 will be described with reference to the flowchart shown in FIG. 5, including their operations.

In this combustion control device 2, the combustion control information collecting unit 2-1 collects combustion control information in a predetermined cycle (for example, in units of 0.1 s) (step S101). In this embodiment, the start input signal (FIG. 3 (a)) indicating the operating state of the combustion device 20, the blower signal (FIG. 3 (b)) indicating the operating state of the blower 16, and the supply of air to the main burner 6 are provided. A signal indicating the state (FIG. 3 (c)), a high opening position detection signal indicating the arrival of the dampers 18 and 19 at the high opening position (FIG. 3 (e)), and the low opening positions of the dampers 18 and 19. Low opening position detection signal (FIG. 3 (f)) indicating the arrival of the fuel, a signal indicating the fuel supply state to the pilot burner 7 (FIG. 3 (g)), and a signal indicating the operating state of the ignition device (ignition) 8. (FIG. 3 (h)), a signal indicating the fuel supply status to the main burner 6 (FIG. 3 (j)), and the flame intensity of the burners (pilot burner 7 and main burner 6) detected by the flame detector 9. The flame detection signal indicating the above, the opening degree θ of the control motor M, and the like are collected as combustion control information, for example, in units of 0.1 s.

The combustion control device 2 acquires a flame detection signal from the flame detector 9 as a frame voltage, and determines the presence or absence of a flame, an ignition abnormality, or the like from the value of this frame voltage. The combustion control information collected by the combustion control information collecting unit 2-1 includes information indicating the presence or absence of a flame determined by the combustion control device 2, information indicating non-ignition, information indicating a fire breakage, frame voltage, and the like.

The combustion control information collected by the combustion control information collection unit 2-1 is accumulated in the combustion control information storage unit 2-2 in chronological order (step S102). The combustion sequence time zone specifying unit 2-3 specifies the time zone of each combustion sequence from the start to the stop of the combustion device 20 based on the combustion control information stored in the combustion control information storage unit 2-2. (Step S103).

In the present embodiment, the combustion sequence time zone specifying unit 2-3 is the "start check" time zone P1, the "pre-purge" time zone P2, the "ignition waiting" time zone P3, and the "pilot ignition" time zone. P4, "Pilot Only" time zone P5, "Main ignition" time zone P6, "Main stable" time zone P7, "Steady combustion" time zone P8, "Post-purge" time zone P9, "Stop" The time zone P10 of is specified. The time zones P1 to P10 are not constant and vary depending on the operating condition of the combustion device 20. The time zone of each combustion sequence specified by the combustion sequence time zone specifying unit 2-3 is stored in the combustion sequence time zone storage unit 2-4.

The unit power consumption storage unit 2-5 stores an estimated value of power consumption per unit time (for example, 1 minute) determined for each combustion sequence as the unit power consumption. That is, as shown in Table TB1 in FIG. 6, the estimated value of the power consumption per unit time is stored as the unit power consumption w1 to w10 in association with the time zones P1 to P10 of each combustion sequence. .. Here, it is assumed that the estimated value of the electric power consumption per unit time of each combustion sequence is obtained as, for example, the average value of the electric power consumption per unit time of each combustion sequence.

The unit fuel consumption storage unit 2-6 stores an estimated value of fuel consumption per unit time (for example, 1 minute) determined for each combustion sequence as the unit fuel consumption. That is, as shown in Table TB2 in FIG. 7, the estimated value of the fuel consumption per unit time is stored as the unit fuel consumption q1 to q10 in association with the time zones P1 to P10 of each combustion sequence. .. Here, it is assumed that the estimated value of the fuel consumption per unit time of each combustion sequence is obtained as, for example, the average value of the fuel consumption per unit time of each combustion sequence.

The power consumption calculation unit 2-7 for each unit period stores in the time zone P (P1 to P10) of each combustion sequence specified by the combustion sequence time zone specifying unit 2-3 and the unit power consumption storage unit 2-5. Based on the unit power consumption w (w1 to w10) of each combustion sequence, the power consumption W for each predetermined unit period (for example, one hour) of the combustion device 20 is calculated (step S104). ..

For example, the unit power consumption w1 is used for the power consumption of the time zone P1 of the "start check", and the unit power consumption w2 is used for the power consumption of the time zone P2 of the "prepurge". For the power consumption in the time zone P3 of "waiting for ignition", the unit power consumption w3 is used to calculate the power consumption W for each unit period. The power consumption W for each unit period calculated by the power consumption calculation unit 2-7 for each unit period is stored in the power consumption storage unit 2-9 for each unit period.

The fuel consumption calculation unit 2-8 for each unit period stores in the time zone P (P1 to P10) of each combustion sequence specified by the combustion sequence time zone identification unit 2-3 and the unit fuel consumption storage unit 2-6. Based on the unit fuel consumption q (q1 to q10) of each combustion sequence, the fuel consumption Q for each predetermined unit period (for example, 1 hour) of the combustion device 20 is calculated (step S105). ..

For example, the unit fuel consumption q4 is used for the fuel consumption in the "pilot ignition" time zone P4, and the unit fuel consumption q5 is used for the fuel consumption in the "pilot only" time zone P5. The fuel consumption Q for each unit period is calculated by using the unit fuel consumption q6 for the fuel consumption in the time zone P6 of the “main ignition”. The fuel consumption Q for each unit period calculated by the fuel consumption calculation unit 2-8 for each unit period is stored in the fuel consumption storage unit 2-10 for each unit period.

The output unit 2-11 is stored in the power consumption W for each unit period stored in the power consumption storage unit 2-9 for each unit period and the fuel consumption storage unit 2-10 for each unit period. The fuel consumption Q for each unit period is read out, and the read out power consumption W and fuel consumption Q for each unit period are stored in the combustion sequence time zone storage unit 2-4 of each combustion sequence. It is output to the monitoring device 21 together with the information indicating the time zone.

The monitoring device 21 includes a display unit 21-1 that displays a monitoring screen on the display, and on the monitoring screen displayed by the display unit 21-1, the power consumption W and the power consumption W for each unit period from the combustion control device 2 and The fuel consumption Q is displayed as a graph in a format that shows the relationship with the time zone of each combustion sequence (step S106).

FIG. 8 shows a display example of the power consumption W for each unit period. In this example, the graph (band graph) showing the time zones P1 to P10 of each combustion sequence from the start to the stop of the combustion device 20 in different colors is set to # 0, and the power consumption W for each unit period is shown. The graph (bar graph) is set to # 1, and the graph in which the graphs # 0 and # 1 are combined is displayed as a power consumption monitoring graph (graph showing the amount of energy used) G1.

FIG. 9 shows an example of displaying the fuel consumption Q for each unit period. In this example, the graph (band graph) showing the time zones P1 to P10 of each combustion sequence from the start to the stop of the combustion device 20 in different colors is set to # 0, and the fuel consumption Q for each unit period is shown. The graph (bar graph) is set to # 2, and the graph in which the graphs # 0 and # 2 are combined is displayed as the fuel consumption monitoring graph (graph showing the amount of energy used) G2.

In the combustion system 100, the user causes the power consumption monitoring graph G1 and the fuel consumption monitoring graph G2 to be displayed on the screen (monitoring screen) of the monitoring device 21. As a result, for example, when the combustion device 20 is started and stopped every day, it is possible to grasp the change in the electric power consumption and the fuel consumption from the start to the stop of the combustion device 20 every day, which saves energy. Can be useful for. That is, it becomes clear at a glance at what point the efficiency is increasing and at what point the efficiency is decreasing, and it is possible to efficiently operate the combustion device 20 to save energy. In addition, it is possible to collect and monitor the amount of energy used at specific time intervals such as daily and monthly.

Further, in this combustion system 100, the power consumption for each unit period is calculated based on the time zone of each combustion sequence and the unit power consumption of each combustion sequence (estimated value of the power consumption per unit time). Also, the fuel consumption for each unit period is calculated based on the time zone of each combustion sequence and the unit fuel consumption of each combustion sequence (estimated value of fuel consumption per unit time). Since it is calculated, it is not necessary to install equipment for power monitoring or equipment for gas flow rate monitoring, it is possible to easily grasp the amount of energy used, and it is possible to avoid high cost. ..

In addition, in the power consumption monitoring graph G1 shown in FIG. 8 and the fuel consumption monitoring graph G2 shown in FIG. 9, a graph showing changes in the temperature and humidity of the outside air may be displayed together. This makes it possible to grasp changes in power consumption and fuel consumption in relation to changes in the temperature and humidity of the outside air.

[Embodiment 2]
FIG. 10 shows a functional block diagram of a main part of the combustion control device 2 according to the second embodiment. In the figure, the same reference numerals as those in FIG. 4 indicate the same or equivalent components as those described with reference to FIG. 4, and the description thereof will be omitted. Hereinafter, the combustion control device 2 (FIG. 4) in the first embodiment is referred to as 2A, and the combustion control device 2 (FIG. 10) in the second embodiment is referred to as 2B to distinguish between the two.

In the combustion control device 2A of the first embodiment, the power consumption W for each unit period calculated by the power consumption calculation unit 2-7 for each unit period and the fuel consumption calculation unit 2-8 for each unit period are calculated. The fuel consumption Q for each unit period is sent to the monitoring device 21 and displayed as a graph on the screen of the monitoring device 21.

On the other hand, in the combustion control device 2B of the second embodiment, the power consumption W for each unit period and the fuel consumption calculation unit 2- for each unit period calculated by the power consumption calculation unit 2-7 for each unit period. The fuel consumption Q for each unit period calculated in 8 is converted into a cost, and the converted cost is sent to the monitoring device 21 so as to be graphed and displayed on the screen of the monitoring device 21.

As a configuration for this purpose, in the combustion control device 2B of the second embodiment, the unit period power cost conversion unit 2-12, the unit period fuel cost conversion unit 2-13, and the unit period power cost storage unit 2- 14 and the fuel cost storage unit 2-15 for each unit period are provided.

FIG. 11 shows a flowchart corresponding to FIG. In this flowchart, the processes of steps S201 to S205 correspond to the processes of steps S101 to S105 in the flowchart shown in FIG. 5, and the description of the contents of the processes will be omitted.

In this combustion control device 2B, the unit period power consumption cost conversion unit 2-12 converts the unit period power consumption W calculated by the unit period power consumption calculation unit 2-7 into a cost (step). S206).

In this case, the unit period power cost conversion unit 2-12 multiplies the unit period power consumption W calculated by the unit period power consumption calculation unit 2-7 by the power usage charge for that unit period. , Calculate the cost C _W of power consumption.

The electricity usage charge for a unit period may be a nighttime charge and is not uniform. The cost C _W of the power consumption for each unit period converted by the power cost conversion unit 2-12 for each unit period is stored in the power cost storage unit 2-14 for each unit period.

The unit period fuel cost conversion unit 2-13 converts the fuel consumption Q for each unit period calculated by the unit period fuel consumption calculation unit 2-8 into a cost (step S207).

In this case, the fuel cost conversion unit 2-13 for each unit period multiplies the fuel consumption Q for the unit period calculated by the fuel consumption calculation unit 2-8 for each unit period by the fuel usage fee for that unit period. , Calculate the cost C _Q of fuel consumption.

The cost C _Q of the fuel consumption for each unit period converted by the fuel cost conversion unit 2-13 for each unit period is stored in the fuel cost storage unit 2-15 for each unit period.

The output unit 2-11 is stored in the unit period power cost storage unit 2-14, the unit period power consumption cost C _W , and the unit period fuel cost storage unit 2-15. The cost C _Q of the fuel consumption for each unit period is read, and the cost C _W of the power consumption and the cost C _Q of the fuel consumption for each read unit period are stored in the combustion sequence time zone storage unit 2-. It is output to the monitoring device 21 together with the information indicating the time zone of each combustion sequence stored in 4.

On the monitoring screen displayed by the display unit 21-1, the monitoring device 21 displays the cost C _W of the power consumption and the cost C _Q of the fuel consumption for each unit period from the combustion control device 2 in each combustion sequence. It is displayed as a graph in a format that shows the relationship with the time zone of (step S208).

FIG. 12 shows an example of displaying the cost C _W of the power consumption for each unit period. In this example, the graph (band graph) showing the time zones P1 to P10 of each combustion sequence from the start to the stop of the combustion device 20 in different colors is set to # 0, and the cost of power consumption for each unit period ( The graph (bar graph) showing the power cost) C _W is set to # 3, and the graph combining the graphs # 0 and # 3 is displayed as the power cost monitoring graph (graph showing the amount of energy used) G3. There is.

FIG. 13 shows an example of displaying the cost C _Q of the fuel consumption for each unit period. In this example, the graph (band graph) showing the time zones P1 to P10 of each combustion sequence from the start to the stop of the combustion device 20 in different colors is set to # 0, and the cost of fuel consumption for each unit period ( Fuel cost) The graph (bar graph) showing C _Q is set to # 4, and the graph combining these graphs # 0 and # 4 is displayed as the fuel cost monitoring graph (graph showing the amount of energy used) G4. There is.

In the example shown in FIGS. 12 and 13, the power cost monitoring graph G3 and the fuel cost monitoring graph G4 are displayed separately, but as shown in FIG. 14, the power cost is displayed. The graph # 3 showing the fuel cost and the graph # 4 showing the fuel cost may be stacked and displayed in one monitoring graph G6 so that the total cost can be understood.

[Embodiment 3]
FIG. 15 shows a functional block diagram of a main part of the combustion control device 2 according to the third embodiment. In the figure, the same reference numerals as those in FIG. 10 indicate the same or equivalent components as those described with reference to FIG. 10, and the description thereof will be omitted. Hereinafter, in order to distinguish from the combustion control device 2 (FIGS. 4 and 10) in the first and second embodiments, the combustion control device 2 in the third embodiment is referred to as 2C.

In the combustion control device 2B of the second embodiment, the cost C _W of the power consumption for each unit period converted by the power cost conversion unit 2-12 for each unit period and the fuel cost conversion unit 2-13 for each unit period are converted. The cost C _Q of the fuel consumption for each unit period was sent to the monitoring device 21 and displayed as a graph on the screen of the monitoring device 21.

On the other hand, in the combustion control device 2C of the third embodiment, the cost C _W of the power consumption for each unit period converted by the power cost conversion unit 2-12 for each unit period and the fuel cost conversion unit 2 for each unit period The cost C _Q of the fuel consumption for each unit period converted in -13 is totaled for each unit period, and this total cost is sent to the monitoring device 21 and displayed as a graph on the screen of the monitoring device 21. To do so.

As a configuration for this purpose, the combustion control device 2C of the third embodiment is provided with a unit period total energy cost calculation unit 2-16 and a unit period total energy cost storage unit 2-17.

FIG. 16 shows a flowchart corresponding to FIG. 11. In this flowchart, the processes of steps S301 to S307 correspond to the processes of steps S201 to S207 in the flowchart shown in FIG. 11, and the description of the contents of the processes will be omitted.

The total energy cost calculation unit 2-16 for each unit period has the cost C _W of the power consumption for each unit period converted by the power cost conversion unit 2-12 for each unit period, and the fuel cost conversion unit 2- for each unit period. The total value TC of the energy cost for each unit period is calculated by summing the cost C _Q of the fuel consumption for each unit period converted in 13. (Step S308).

The total value TC of the energy cost for each unit period calculated by the total energy cost calculation unit 2-16 for each unit period is stored in the total energy cost storage unit 2-17 for each unit period.

The output unit 2-11 reads the total value TC of the energy cost for each unit period stored in the total energy cost storage unit 2-17 for each unit period, and reads the total value TC of the energy cost for each read unit period. , Is output to the monitoring device 21 together with the information indicating the time zone of each combustion sequence stored in the combustion sequence time zone storage unit 2-4.

The monitoring device 21 graphs the total value TC of the energy cost for each unit period from the combustion control device 2 on the monitoring screen displayed by the display unit 21-1 in a format that shows the relationship with the time zone of each combustion sequence. Is displayed (step S309).

FIG. 17 shows an example of displaying the total value TC of the energy cost for each unit period. In this example, the graph (band graph) showing the time zones P1 to P10 of each combustion sequence from the start to the stop of the combustion device 20 in different colors is set to # 0, and the total value of the energy cost for each unit period (total). The graph (bar graph) showing the cost) TC is set to # 5, and the graph combining these graphs # 0 and # 5 is displayed as the monitoring graph (graph showing the amount of energy used) G5 of the total value of the energy cost. ing.

In the above-described embodiment, the unit time for determining the unit power consumption and the unit fuel consumption of each combustion sequence is set to, for example, 1 minute, and the power consumption for each unit period and the fuel consumption for each unit period are set. The unit period at the time of calculation is, for example, one hour, but it is an example to the last, and it goes without saying that it can be arbitrarily determined.

Further, in the above-described embodiment, the monitoring device 21 is provided separately from the combustion control device 2, and a graph showing the amount of energy used is displayed on the screen of the monitoring device 21. A display unit for displaying a monitoring screen may be provided in the monitor screen, and a graph showing the amount of energy used may be displayed on the monitoring screen displayed by the display unit.

Further, as shown in FIG. 18, a transmission unit 2-18 is provided in the combustion control device 2, and the transmission unit 2-18 is connected to the remote monitoring device (remote monitoring device) 21 via the Internet 30 for a unit period. The power consumption W for each unit and the fuel consumption Q for each unit period may be sent and displayed as a graph on the screen of the monitoring device 21.

Further, the monitoring device 21 may monitor the operation of the plurality of combustion devices 20. By displaying a graph showing the amount of energy used in the plurality of combustion devices 20 on the screen of the monitoring device 21, it is easy to compare which combustion device 20 has good operating efficiency and which combustion device 20 has poor operating efficiency. can do. In addition, it can be monitored from a distance, and by comparing it, it is possible to respond according to the characteristics of the site, and it is possible to respond for energy saving.

Further, for example, in the first embodiment (FIG. 4), a unit period power consumption storage unit 2-9 and a unit period fuel consumption storage unit 2-10 are provided, and a unit period power consumption calculation unit 2- The combustion control device 2 stores the power consumption W for each unit period calculated in 7 and the fuel consumption Q for each unit period calculated by the fuel consumption calculation unit 2-8 for each unit period. However, the power consumption W for each unit period and the fuel consumption Q for each unit period calculated by the combustion control device 2 may be sent to the monitoring device 21 and stored on the monitoring device 21 side. The same applies to the second embodiment and the third embodiment.

Further, the above-described embodiments 1, 2, and 3 may be selectively combined. That is, the power consumption W for each unit period calculated by the power consumption calculation unit 2-7 for each unit period and the fuel consumption for each unit period calculated by the fuel consumption calculation unit 2-8 for each unit period. With Q as the first monitoring item, the cost C _W of the power consumption for each unit period converted by the power cost conversion unit 2-12 for each unit period and the fuel cost conversion unit 2-13 for each unit period converted. The cost C _Q of fuel consumption for each unit period is set as the second monitoring item, and the total value TC of the energy cost for each unit period calculated by the total energy cost calculation unit 2-16 for each unit period is monitored as the third. The items may be selected, and the first, second, and third monitoring items may be selectively combined and displayed on the screen of the monitoring device 21.

Further, in the above-described embodiment, the graph showing the amount of energy used in the combustion device 20 is displayed on the screen (monitoring screen) of the monitoring device 21, but the graph is not displayed on the monitoring screen but by the printer. It may be printed on paper.

Further, in the above-described embodiment, the combustion sequence time zone specifying unit 2-3, the unit power consumption storage unit 2-5, the unit fuel consumption storage unit 2-6, and the unit period power consumption calculation unit 2-7. , The fuel consumption calculation unit 2-8 for each unit period is provided in the combustion control device 2, but it is not always necessary to provide it in the combustion control device 2, and a diagnostic device is provided separately from the combustion control device 2. , A similar function may be provided in this diagnostic device.

[Extension of Embodiment]
Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the structure and details of the present invention within the scope of the technical idea of the present invention.

1 ... Fuel equipment, 2 ... Fuel control device, 2-1 ... Fuel control information collection unit, 2-2 ... Fuel control information storage unit, 2-3 ... Fuel sequence time zone identification unit, 2-4 ... Fuel sequence time zone Storage unit, 2-5 ... Unit power consumption storage unit, 2-6 ... Unit fuel consumption storage unit, 2-7 ... Unit period power consumption calculation unit, 2-8 ... Unit period fuel consumption calculation unit , 2-9 ... Power consumption storage unit for each unit period, 2-10 ... Fuel consumption storage unit for each unit period, 2-11 ... Output unit, 2-12 ... Power cost conversion unit for each unit period, 2-13 ... Unit period fuel cost conversion unit, 2-14 ... Unit period power cost storage unit, 2-15 ... Unit period fuel cost storage unit, 2-16 ... Unit period total energy cost calculation unit, 2-17 ... Unit Total energy cost storage for each period, 6 ... main burner, 7 ... pilot burner, 8 ... ignition device, 20 ... combustion device, 100 ... combustion system, G1 ... power consumption monitoring graph, G2 ... fuel consumption monitoring Graph, G3 ... power cost monitoring graph, G4 ... fuel cost monitoring graph, G5 ... total energy cost monitoring graph, TB1, TB2 ... table.

Claims (4)

In a combustion system including at least a combustion device including an ignition device and a burner, and a combustion control device that controls the operation of the combustion device according to a predetermined combustion sequence.
A signal indicating the operating state of the ignition device, a signal indicating the fuel supply state to the burner, a signal indicating the air supply state to the burner, a flame detection signal indicating the flame intensity of the burner, and the flame detection thereof. A combustion control information collecting unit configured to collect combustion control information including at least information indicating the presence or absence of a flame judged from a signal value at a predetermined cycle, and
A combustion control information storage unit that stores combustion control information collected by the combustion control information collection unit in chronological order, and a combustion control information storage unit.
A combustion sequence time zone specifying unit configured to specify the time zone of each combustion sequence from the start to the stop of the combustion device based on the combustion control information stored in the combustion control information storage unit.
A unit power consumption storage unit that stores an estimated value of power consumption per unit time determined for each combustion sequence as a unit power consumption, and a unit.
A unit fuel consumption storage unit that stores an estimated value of fuel consumption per unit time determined for each combustion sequence as a unit fuel consumption, and a unit fuel consumption storage unit.
A predetermined value of the combustion device is determined based on the time zone of each combustion sequence specified by the combustion sequence time zone specifying unit and the unit power consumption of each combustion sequence stored in the unit power consumption storage unit. The power consumption calculation unit for each unit period, which is configured to calculate the power consumption for each unit period,
A predetermined combustion device is determined based on the time zone of each combustion sequence specified by the combustion sequence time zone specifying unit and the unit fuel consumption of each combustion sequence stored in the unit fuel consumption storage unit. The fuel consumption calculation unit for each unit period, which is configured to calculate the fuel consumption for each unit period ,
A unit period power cost conversion unit configured to convert the unit period power consumption calculated by the unit period power consumption calculation unit into a cost, and a unit period power cost conversion unit.
A unit period fuel cost conversion unit configured to convert the unit period fuel consumption amount calculated by the unit period fuel consumption calculation unit into a cost, and a unit period fuel cost conversion unit.
The first monitoring of the power consumption for each unit period calculated by the power consumption calculation unit for each unit period and the fuel consumption for each unit period calculated by the fuel consumption amount calculation unit for each unit period. As an item, the cost of power consumption for each unit period converted by the power cost conversion unit for each unit period and the cost of fuel consumption for each unit period converted by the fuel cost conversion unit for each unit period. As the second monitoring item, the cost of power consumption for each unit period converted by the power cost conversion unit for each unit period and the fuel for each unit period converted by the fuel cost conversion unit for each unit period. The total value of the energy cost for each unit period, which is the sum of the consumption cost and the fuel cost for each unit period, is set as the third monitoring item, and the first, second, and third monitoring items are selectively combined. With an energy consumption presentation unit configured to present
Combustion system characterized by being equipped with. In the combustion system according to claim 1,
The cost of power consumption for each unit period converted by the power cost conversion unit for each unit period and the cost of fuel consumption for each unit period converted by the fuel cost conversion unit for each unit period are described above. A unit period total energy cost calculation unit configured to calculate the total value of the energy cost for each unit period by totaling for each unit period, and
A combustion system comprising: an energy consumption presentation unit configured to present the total value of the energy cost for each unit period calculated by the total energy cost calculation unit for each unit period. The combustion control device included in the combustion system according to claim 1, or a device provided separately from the combustion control device.
The combustion control information collecting unit, the combustion control information storage unit, the combustion sequence time zone specifying unit, the unit power consumption storage unit, the unit fuel consumption storage unit, and the unit of the combustion system. It includes a period-specific power consumption calculation unit, a unit period fuel consumption calculation unit, a unit period power cost conversion unit, a unit period fuel cost conversion unit, and an energy consumption presentation unit. Device. A program for causing a computer to function as at least the unit period power cost conversion unit, the unit period fuel cost conversion unit, and the energy consumption presentation unit of the combustion system according to claim 1.

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