JPH0783507A - Operation controlling method for large capacity hot water supplying system with composite heat source equipment - Google Patents

Abstract

PURPOSE:To provide a method for operating a large capacity hot water supplying system in which various modes of the system can be precisely controlled and a trouble can be rapidly dealt with. CONSTITUTION:A hot water storage tank 1 is connected to a plurality of hot water supplying units 11 through a circulating conduit 3, hot water is generated by the units 11, contained in the tank 1, and the hot water in the tank 1 is heat reserved via the conduit 3. A hot water supply circulating conduit 17 is connected to the tank 1, and the hot water of the tank 1 is supplied to hot water supply destinations via the conduit 17. Various sensors such as a flow sensor, an output hot water temperature sensor, etc., a sensor board 9 for inputting sensor information, and a combustion controller 15 are provided in the unit 11, a system controller 16 is provided at a system side, and sensor information is distributed to be supplied to both the controllers 15, 16. The controller 15 controls combustion of the unit 11, and the controller 6 controls the system which uses the information.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of controlling operation of a large capacity hot water supply system equipped with a combined heat source.

[0002]

2. Description of the Related Art When a large amount of hot water is temporarily used for apartments such as condominiums, single dormitories with large baths, public baths, large-scale houses, restaurants, etc. A large-capacity hot water supply device is provided.

FIG. 7 shows a system of a general high capacity water heater of this type. In the figure, a heating circulation system 6a to 6d is arranged in the composite heating circulation system 26, and a circulation pipeline 3 is provided between the composite circulation system 26 and the hot water storage tank 1. An on-off valve 2 is provided in the passage 3. Each of the heating and circulation systems 6a to 6d includes a water heater 11 which is a heat source device, an inlet valve 7 and an outlet valve 12, and each water heater 11 is required for combustion control for producing hot water. Various sensors such as various flow sensors and hot water temperature sensors, and a sensor substrate 9 into which various sensor information is input and a combustion control circuit 15 are built in. The combustion control circuit 15 is based on the sensor information from the sensor substrate 9. Combustion control of the water heater 11 is performed. Then, by operating a remote controller outside the water heater 11 connected to the combustion control circuit 15, hot water of a desired temperature can be individually produced for each water heater 11. In addition,
The valves 7 and 12 are closed at the time of repair and inspection, and are always kept open.

The hot water storage tank 1 is a tank for containing the hot water produced by the water heater 11, and the hot water heater is provided by the circulation line 3.
Hot water is supplied from the hot water storage tank 1 to the hot water storage tank 1, and the hot water in the hot water storage tank 1 is heated by the circulation pipe 3 in each of the heating and circulation systems 6a to 6a.
The hot water is kept warm by circulating it between d and the hot water storage tank 1. Further, a water supply pipe 4 is connected to the circulation pipe 3, and the water passed through the water supply pipe 4 passes through the circulation pipe 3 a and each heating circulation system 6 a of the hot water storage tank 1 and the composite heating circulation system 26.
It can be supplied to ~ 6d.

The hot water storage tank 1 is provided with a first temperature switch 30 on the lower side of the tank 1 and a second temperature switch 31 on the intermediate side of the tank 1, and the respective temperature switches 30, 31 are provided. Is turned on when the temperature of the hot water in the hot water storage tank 1 becomes lower than the set temperature, and turned off when the temperature exceeds the set temperature, and these on / off signals are applied to the system control circuit 16.

The system control circuit 16 is a first temperature switch.
When 30 is turned on, the first and second series heating circulation systems 6a, 6
When the second temperature switch 31 is turned on, the heating and circulation systems 6a to 6d of all the series are driven and controlled. The drive control of each heating circulation system drives the hot water circulation pump 8 to perform the combustion operation of the water heater 11, and heats the hot water or water sucked from the inlet side valve 7 side by the water heater 11. Hot water produced by heating is supplied to the upper side of the hot water storage tank 1 through the hot water supply pipe 3b. The system control circuit 16 is a circuit that performs sequence control on the system side, and performs not only drive control of the heating circulation systems 6a to 6d but also drive control of the hot water circulation pump 18.

A circulating hot water supply pipe 17 is connected to the hot water storage tank via an opening / closing valve 14, and the circulating hot water supply pipe is a pipe leading to each dwelling unit.
It is connected to a desired place such as a kitchen or a bathroom by being connected to 27, and hot water in the hot water storage tank 1 is supplied by tap water pressure by opening the faucet 24. By driving the hot water supply circulation pump 18 provided in the circulating hot water supply pipe 17, the hot water in the hot water storage tank 1 circulates through the circulation pipe and is returned to the upper part of the hot water storage tank 1, and the faucet 24 is closed to remove the hot water. When not in use, the hot water is circulated in the hot water supply pipe 17 to prevent the hot water from cooling in the pipe, and when the faucet 24 is opened, the hot water of the set temperature is ready to be immediately discharged. .

In this type of large capacity device, when the faucet of each dwelling unit is closed, hot water is circulated in the hot water supply circulation pipe 17 by driving the hot water supply circulation pump 18 to keep the hot water warm. However, when the faucet of a dwelling unit is opened, water is tapped from the faucet of the dwelling unit due to the water supply pressure.

Water enters the hot water storage tank 1 from the water supply pipe side 4, but since the specific gravity of hot water (water) is smaller when the temperature is higher than when it is low, even if water enters from the lower part of the hot water storage tank 1, The water and the hot water stored in the hot water storage tank 1 do not mix at once, and there is low-temperature hot water on the lower side of the tank 1 and high-temperature hot water on the upper side of the tank 1. Like Then, water rapidly enters the tank 1 from the lower side of the tank 1, and the boundary between the low-temperature hot water (low-temperature portion) whose temperature is lowered by the water and the high-temperature hot water (high-temperature portion) gradually rises. When the temperature reaches the first temperature switch 30, the temperature switch 30 is turned on because the temperature of the low-temperature hot water is lower than the set temperature of the temperature switch 30, and the control device 16 receives the ON signal of the temperature switch 30. Warm circulation system 6
The inside of a and 6b is driven. Then, the water passing from the water supply pipe 4 through the hot water circulation pipe 3a enters the heating circulation systems 6a and 6b, is heated by the combustion of the water heater 11 and becomes hot water of a set temperature, and the hot water storage tank is passed through the circulation pipe 3b. 1 is fed into the hot water storage tank 1 from above.

In this way, hot water is replenished into the hot water storage tank 1 through the heating circulation systems 6a and 6b by the load of hot water supply, but when the hot water supply load capacity becomes very large, the heating circulation of the first and second series. The hot water supply capacity of the systems 6a and 6b cannot catch up, the proportion of water in the hot water storage tank 1 gradually increases, and the boundary between the high temperature portion and the low temperature portion rises accordingly. Then, when the boundary reaches the second temperature switch 31, the temperature of the hot water in the low temperature portion is lower than the set temperature of the temperature switch 31, so that the temperature switch 31 is turned on, and the system control circuit receives this on signal. Reference numeral 16 drives the heating circulation systems 6a to 6d of all series, and the hot water produced by each of the heating circulation systems 6a to 6d is supplied from the upper side of the hot water storage tank 1 through the circulation pipeline 3b. The lukewarm water mixed with water does not come out of the road 17.

[0011]

However, in such an apparatus, although the system control circuit 16 controls the normal hot water supply circulation pump 18 and the drive control of the heating circulation systems 6a-6b, the heating control is performed. The drive control of the circulation systems 6a to 6d is performed only by receiving command signals for driving the heating circulation systems 6a to 6d in response to the ON / OFF signals of the temperature switches 30 and 31. The combustion control of the water heater 11 is individually performed by operating the combustion control circuit 15 provided for each water heater with a remote controller, and the system control circuit 16 does not incorporate information for controlling the combustion of the water heater 11. Therefore, it was not possible to perform the dense system control including the combustion control of the water heater 11.

Further, since the information input to the system control circuit 16 is limited, the control method of the system is also limited, and various control modes cannot be adopted.
Further, even when a failure occurs, it is not possible to accurately determine the location of the failure and take prompt action due to lack of information.

The present invention has been made in order to solve the above-mentioned conventional problems, and its purpose is to enable precise system control in various forms, and to promptly deal with a failure. Another object of the present invention is to provide a method of controlling the operation of a large capacity hot water supply system including a composite heat source.

[0014]

In order to solve the above problems, the present invention is configured as follows. That is, the present invention is provided with a plurality of heat source devices for producing hot water and a hot water storage tank for containing the hot water produced by these heat source devices, and a circulation pipe for supplying hot water from the heat source device to the tank and keeping the hot water in the tank warm. A method for controlling the operation of a hot water supply system in which a passage is provided between the tank and the heat source device, and a hot water supply circulation pipe line for supplying the hot water in the tank to each hot water supply destination is provided. A system control circuit for controlling system operation is provided in the hot water supply system, which is provided with various sensors required for fuel control for producing, including at least a flow sensor and a hot water temperature sensor, and a combustion control circuit for performing combustion control based on the sensor information. Is provided, the sensor information of each heat source side is added to the combustion control circuit, and is distributed and supplied to the system control circuit of the system side. It is configured as characterized by controlling the operation of the hot water supply system using multicast.

Further, the plurality of heat source devices operate with two or more heat source devices as one set, and various sensor information including at least a flow sensor and a tap water temperature sensor is added to the system control circuit for each heat source device of each set. This is also a characteristic configuration of the present invention.

[0016]

In the present invention having the above-mentioned structure, each heat source unit is provided with various sensors required for combustion control for producing hot water, and various sensors including at least a flow sensor and a hot water temperature sensor, and a combustion control circuit. Information is added to the combustion control circuit, and combustion control of the heat source device is performed by the combustion control circuit based on the sensor information. Further, the sensor information of various sensors is distributed to the system control circuit on the system side in addition to being added to the combustion control circuit, so that the system control circuit uses the sensor information to control the operation of the hot water supply system. In this way, by incorporating detailed various sensor information of each heat source into both the combustion control circuit and the system control circuit and controlling both circuits together, the operation control of the hot water supply system can be performed precisely and variously. It can be performed in various forms.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. In the description of the present embodiment, the same reference numerals will be given to the same names as those in the conventional example, and the detailed description thereof will be omitted.
FIG. 1 shows an embodiment of a large-capacity hot water supply system equipped with a composite heat source device according to the present invention. This embodiment is different from the conventional example in that the combustion control circuit 15 receives sensor information from the sensor substrate 9 in which various information such as a flow sensor and a hot water temperature sensor provided in each water heater 11 is input. In addition, the sensor information is distributed and supplied to the system control circuit 16 on the system side as shown by the dotted line in the figure, and the system control circuit 16 uses the sensor information to control the operation of the hot water supply system. Is to do.
The system control circuit 16 is connected to the service station via a telephone line, and when an abnormality occurs in the hot water supply system and a system failure is confirmed, an automatic notification is immediately sent to the service station.

Further, in this embodiment, the heating circulation systems 6a to 6d are used.
Is provided with a hot water circulation pump 8, and a heat source unit 34 in which the combined heating circulation system 26 and the hot water supply circulation pump 18 are unitized is formed. Inside the heat source unit 34, the circulation pipelines 3a, 3b are provided. Thermistors T ₁ and T ₂ which are temperature sensors are provided, and the hot water supply circulation line 17 is provided with a thermistor T ₅ . The thermistor T ₁ detects the temperature of the hot water or water sent to the side of the water heater 11, and the thermistor T ₂ detects the temperature of the hot water passing through the circulation conduit 3b. When the water heater 11 is driven, it is created by the water heater 11 and stores hot water. The thermistor T ₅ plays a role of detecting the temperature of the hot water sent to the tank 1, and the thermistor T ₅ plays a role of detecting the temperature of the hot water circulating in the hot water supply circulating pipe 17 by the hot water supply circulating pump 18. Each thermistor T ₁ ,
The temperature information detected by T ₂ and T ₅ is constantly input to the system control circuit 16 from the thermistors T ₁ , T ₂ and T ₅ .

A thermistor T ₄ is provided on the intermediate side of the tank 1 in the hot water storage tank 1, a thermistor T ₃ is provided on the lower side of the tank 1, and the thermistor T ₄ detects the temperature of the intermediate side of the tank 1. and, thermistor T ₃ detects the temperature of the lower side of the tank 1, the temperature information detected by the thermistors T _4, T ₃ is applied from the thermistor T _4, T ₃ always to the system control circuit 16 . System control circuit 16
Is whether it is sufficient to drive one of the heating circulation of the heating circulation 6a~6d when thermistor T _3, the temperature detected by the T ₄ is lower than the set temperature set in advance by receiving the signal Judgment is made and drive control of the heating circulation system is performed.

Hot water supply circulation line outside the heat source unit 34
The thermistor T ₆ is also provided at 17b to detect the temperature of the hot water which is circulated in the hot water circulating pipe 17 and is sent to the hot water storage tank 1. This temperature information is also constantly input to the system control circuit 16. ing. Further, the hot water supply circulation pump 18 of the present embodiment is provided with two series, and alternately operates at regular time intervals.

This embodiment is constructed as described above,
Next, the warm water circulation operation will be described. When the faucet of the dwelling unit is in the closed state, as shown in Fig. 2 (a), the hot water is circulated by the drive of the hot water circulation pump 18 and kept warm, and when the faucet is opened, it is kept warm. While the hot water was discharged, in the present embodiment, the thermistors T ₁ , T ₂ ,
The temperature of the hot water or the water passing through the circulation pipeline 3 and the hot water supply circulation pipeline 17 is constantly detected by T ₅ and T ₆ and is input to the system control circuit 16. It always knows the temperature of the water passing through.

The temperature information detected by the thermistors T ₃ and T ₄ provided in the hot water storage tank 1 is constantly input to the system control circuit 16, while the system control circuit 16 includes each heating circulation system. Various information necessary for combustion control of the water heater 11 is constantly input from the sensor substrate 9 built in the water heater 11 of 6a to 6d, and the system control circuit 16 causes the thermistor T ₃ ,
Temperature information input from T ₄ and system control circuit in advance
By comparing with the set temperature input to 16, the hot water is used from the faucet of the dwelling unit, and the water enters from the lower side of the hot water storage tank 1 to lower the temperature of the hot water in the hot water storage tank 1, As shown in b), the low temperature part of the hot water is thermistor T ₃
When the detected temperature of the thermistor T ₃ becomes lower than the set temperature, the difference between the temperature of the thermistor T ₃ and the set temperature is input, and the input is made from the sensor board 9 of the water heater 11. It is determined from the various sensor information and the like which heating circulation system among a plurality of heating circulation systems 6a to 6d is driven, and based on that determination, the heating circulation system (in the figure, the heating circulation system 6a ) Drive.

Then, the hot water circulation pump 8 sends the water from the lower part of the hot water storage tank 1 or the water supply pipe 4 to the hot water supply device 11 through the circulation pipe 3a, and the hot water supply device 11 produces hot water and sends it to the upper part of the hot water storage tank 1. Go.

Further, hot water is further used and the hot water storage tank 1
Level of the cold portion of the hot water rises in the inner, as shown in FIG. 2 (c), the low temperature portion of the hot water reaches the thermistor T _4, when the temperature detected by the thermistor T ₄ is lower than the set temperature Similarly, the heating circulation system to be driven is determined, and the heating circulation system (all heating circulation systems 6a to 6d in the figure) is determined based on the determination.
To feed the hot water produced by the water heater 11 into the hot water storage tank 1.

The temperature detected by the thermistor T ₁ for detecting the temperature of the hot water sent to the water heater 11 is the heating control system 6a.
By the heating drive control of ~ 6d, when the set temperature is reached, a part of the warming circulation system 6a-6d being started is left and the others are stopped, and when the temperature becomes higher than the set temperature, all the warming circulation being started. Stop the system.

According to this embodiment, the system control circuit 16
Constantly receives signals of temperature information detected from the thermistors T ₃ and T ₄ , and compares the temperature information with a set temperature, the detected temperature of the thermistors T ₃ and T ₄ is different from the set temperature. It is possible to constantly grasp whether or not the detection temperature of the thermistor T ₃ or the thermistor T ₄ is suddenly decreased or increased, or is gradually detected. Moreover, in addition to this, the detected temperatures of the thermistors T ₁ , T ₂ , T ₅ , and T ₆ can be constantly grasped, and further, each heating circulation system 6 a,
Since various sensor information required for combustion control of each water heater 11 is constantly input to the system control circuit 16 from the sensor substrate 9 built in each water heater 11 of 6b, 6c, 6d,
The system control circuit 16 can simultaneously grasp all temperature information necessary for controlling the entire system and detailed sensor information of various sensors necessary for combustion control of the water heater 11.

Therefore, it is possible to perform fine system control by utilizing such information. In the conventional example, the system control circuit 16 causes the temperature switch 3 to operate.
Receiving 0/31 ON / OFF signals, heating circulation system 6a-6b
Drive two of them, or drive all
Alternatively, it is possible to perform extremely precise system control, as compared with the case where drive control is performed to stop all the series.

FIG. 3 shows a hot water circulation pump 8 utilizing flow sensor information among various sensors provided in the water heater 11.
The flowchart of the operation confirmation and the coping method after the confirmation is shown. When the hot water circulation pump 8 of the selected water heater 11 of the heating circulation systems 6a to 6d is started and the output signal of the flow sensor in the water heater 11 is in the OFF state, the system control circuit 16 is started in step 102. It is judged that an error has occurred in the warm water circulation pump (warm water circulation P) 8 of the inside heating circulation systems 6a to 6d, and by the operation after step 103, it is confirmed whether or not the warm water circulation pump 8 has really failed and it is dealt with. I do.

First, in step 103, the hot water circulation pump 8 in which an error has occurred is stopped and an error flag is set. At this time, the water heater of the heating circulation system in which the hot water circulation pump 8 is stopped.
Combustion of 11 is automatically stopped by the combustion control circuit 15. Next, at step 104, it is confirmed whether or not all the hot water circulating pumps 8 scheduled to be started up except the hot water circulating pump 8 in which the error has occurred. Then, all hot water circulation pumps 8 to be started except the hot water circulation pump in which the error has occurred
If is started, it is checked in step 105 whether or not 20 seconds or more have elapsed after the hot water circulation pump 8 was started in step 104, and if 20 seconds has not elapsed, wait until that time.

Next, at step 106, it is judged whether or not 60 seconds have elapsed since the hot water circulation pump error occurred at step 102, and if 60 seconds has not elapsed, wait until 60 seconds have elapsed. Here, if the cause of the decrease in the output of the flow sensor is due to the air that has entered the hot water circulation pump 8, the hot water circulation pump 8 can be operated for 60 seconds after the error occurs.
It is considered that the air is evacuated from the hot water circulation pump 8, and the hot water circulation pump 8 starts normally, and the output of the flow sensor also returns to normal. Therefore, if 60 seconds or more have passed in step 106, the hot water circulation pump 8 that was stopped is restarted. Let

Next, when the ON signal is output from the flow sensor of the water heater 11 in step 108, it is judged that it is not due to the failure of the hot water circulation pump 8 but due to the air entering the hot water circulation pump 8. Therefore, in step 109, the water heater is ignited, in step 110 the 1-cycle sequence is normally operated to boil the water, and in step 114, the error flag set in step 103 is removed and the normal operation is restored. .

When the ON signal is not output from the flow sensor in step 108, steps 104 to 108 are performed.
Repeat the operation up to 5 times, and if the ON signal is not output from the flow sensor even after repeating the operation 5 times,
In step 112, it is determined that the error did not occur because the hot water circulating pump 8 entered the air and that the hot water circulating pump 8 failed in 112. At this time, as a precaution, in order to confirm whether the flow sensor is out of order,
If the water heater 11 having the hot water circulation pump 8 in which an error occurs is burned for a short time with a weak heating power, and the temperature change of the hot water produced by the water heater 11 is seen by a thermistor in the appliance, the temperature rises abruptly. It can be seen that the hot water circulation pump 8 is out of order. Therefore, by performing such an operation and confirming that the flow sensor has not failed, the failure of the hot water circulation pump 8 becomes more reliable.

When the failure of the hot water circulating pump 8 is confirmed, the failing hot water circulating pump 8 is stopped in step 113, and at the same time, the failure point and the failure state are notified to the service station through the telephone line.

As described above, according to this embodiment, the water heater 11
Since the sensor information of the flow sensor provided in the is always input to the system control circuit 16, when an error occurs in the system system of the flow sensor of the water heater 11, the sensor information is used to It is possible to determine whether this is due to the air entering the circulation pump 8 or the malfunction of the hot water circulation pump 8.
Then, by such a judgment that cannot be made in the conventional example, it is possible to appropriately deal with the cause. Further, even if a failure occurs, the service station can be promptly notified of the failure, and upon receipt of the notification, the worker can promptly perform the failure repair.

FIG. 4 shows a flow chart of a countermeasure example when the system thermistor T ₁ fails.
For example, when the temperature of the thermistor T ₁ does not change despite the fact that the heating circulation systems 6c and 6d are operating, the thermistor T ₁ may be out of order, but in the system of this embodiment, the thermistor T ₁ is not provided. A self-check function is provided so that it can be judged whether or not there is a real failure, and the self-check confirms the failure of the thermistor T ₁ .

The self-check operation is performed by first using the remote controller of the water heater 11 of the heating circulation systems 6c and 6d with the hot water circulation pump 8 of the heating circulation systems 6c and 6d kept operating. After extinguishing the fire, the temperature detected by the hot water temperature sensor in each water heater 11 is compared with the temperature detected by the thermistor T ₁ . At this time, the flow sensor in each water heater 11 is also checked, and it is detected by the flow sensor that the flow rate of the hot water sent by the hot water circulation pump 8 is normal.
If the temperatures detected by the hot water temperature sensors in the water heaters 11c and 6d are the same and only the temperature detected by the thermistor T ₁ is different from the temperature detected by the hot water temperature sensor, it is determined that the thermistor T ₁ has failed. To be done.

If the system control circuit 16 determines in step 101 that the thermistor T ₁ has failed due to this self-check, any one of the temperature sensors of the water heater 11 is used in place of the thermistor T ₁ in step 102. Determine if you can. This judgment is made from the balance between the amount of hot water that can be produced when all the water heaters 11 of the heating circulation systems 6a to 6d are operated, and the amount of hot water that the entire system wants to produce. If the combustion of the water heater 11 is stopped and the hot water temperature sensor of the water heater 11 is used instead of the thermistor T ₁ , the system operation is not hindered and the heat retaining operation can be performed, that is, the hot water supply If the number of water heaters 11 is sufficient, the substitute water heater 11 is determined in step 103, and the hot water circulation pump 8 is operated with the fire of the substitute water heater 11 extinguished in step 104, and the water heater 11 Hot water temperature sensor is thermistor T
_As an alternative to _1, the heating circulation systems 6c and 6d are driven again while detecting the temperature of the hot water passing through the circulation pipe line 3 with the hot water temperature sensor, and normal system operation is performed.

In step 102, one of the water heaters 11
If the hot water temperature sensor is not used, the warming operation cannot be performed sufficiently, and if the system operation is hindered, that is, if the number of water heaters 11 is insufficient, the operation of the entire system is performed in step 105. Although the capacity is reduced, it is determined whether the operation can be continued, and if the operation can be continued, in step 106, one of the temporary substitute water heaters 11 is determined as in step 103. And step
Hot water circulation pump 8 with the water heater 11 turned off at 107
Is operated and the hot water temperature sensor of the water heater 11 is used as a substitute for the thermistor T _{1 and} the hot water temperature sensor is used to circulate the circulation line 3
The system operation is performed while detecting the temperature of the hot water passing through, for example, while indicating that the operation is at 60% load, the service station is simultaneously contacted to repair the thermistor T ₁ failure as soon as possible. Also,
If it is determined in step 105 that the operation cannot be continued, the system is stopped and the service station is contacted in step 108.

As described above, according to this embodiment, various forms of system operation are possible, and therefore, even when the thermistor T ₁ fails, it is built in the water heater 11 depending on the system operating condition at that time. It is also possible to perform the system operation as usual by using the tap water temperature sensor described above as a substitute for the thermistor T ₁ . In addition, even when a failure is repaired, the location of the failure is clarified and the service station is immediately contacted, so that the failure can be repaired immediately.

As described above, according to the large capacity hot water supply system of this embodiment, the system control circuit 16 causes the thermistors T ₁ to
It is possible to both constantly monitors the information from various sensors of the sensor necessary for combustion control of the temperature information and the water heater 11 necessary for controlling the entire system by T _6, thermistor T ₁ through T ₆
In addition to performing system control based on the temperature information of the above, a fine and precise system can be performed using various sensor information. Moreover, various forms of system control can be performed, and even when a failure occurs, it is possible to quickly deal with it.

Of course, the same sensors as the various sensors such as the flow sensor and the hot water temperature sensor provided in each water heater 11 of the heating circulation systems 6a to 6d are provided outside each water heater 11, and the sensor information thereof is provided. Is supplied to the system control circuit 16, it is possible to perform the same system control as in the present embodiment, but in that case, the same sensor is not provided both inside and outside each water heater 11. Since the number of sensors increases, the number of sensors increases, the system becomes complicated, and the cost increases. In the present embodiment, since various sensors provided in each water heater 11 are used as they are for distribution and supply also to the system control circuit 16, such a system is not complicated and cost is not increased, and it is precise. Moreover, it is possible to control the system in various forms.

The present invention is not limited to the above-mentioned embodiments, and various embodiments can be adopted. For example, although the number of the heating circulation systems 6a to 6d is four in the above embodiment,
The number of heating circulation systems is not particularly limited as long as it is plural, and may be appropriately set according to the specifications.

In the above embodiment, each heating circulation system 6a-
The water heater 6d has been described by taking a gas combustion type water heater (including an instantaneous water heater) as an example, but the water heater 11 may be an oil burning type water heater.

Further, in the above-described embodiment, each water heater 11 burns with its combustion controlled by the combustion control circuit 15 for each water heater 11 on the basis of various sensor information contained in each water heater 11. In addition, various sensor information for each water heater 11 was distributed and supplied to the system control circuit 16, but as shown in FIG.
Two or more water heaters 11 operate as one set, and various sensor information including at least a flow sensor and a hot water temperature sensor is supplied from the sensor board 9 to the system control circuit 16 for each water heater of each set.
May be added to the above.

Further, in the above embodiment, the sensor information is distributed and supplied from the sensor substrate 9 of the water heater 11 to the combustion control circuit 15 and the system control circuit 16 of the water heater 11, but as shown in FIG. Can be distributed to a plurality of circuits or boards) and the like, as shown in (a) of the figure, the sensor information is distributed and supplied from the terminal 33 to the sensor board 9 and the system control circuit 16, and the sensor board 9 Information may be added to the combustion control circuit 15, or as shown in FIG.
Sensor information may be distributed and supplied from the terminal 33 to the system control circuit 16 and the combustion control circuit 15.

Further, in the above embodiment, the heating circulation system 6a is used.
6d and the hot water supply circulating pump 18 are unitized to form the heat source unit 34, but the heat source unit 34 is not necessarily used, and the hot water supply circulating pump 18 may be provided outside the heating circulation system 26 as in the conventional example. I do not care. Further, in the above-described embodiment, two hot water supply circulation pumps 18 are provided, and the hot water supply circulation pumps 18 are alternately operated at regular intervals, but the hot water supply circulation pump 18 may be one series.

Furthermore, the operation control method of the large-capacity hot water supply system provided with the composite heat source device of the present invention is not limited to the control shown in the above-mentioned embodiment, and control in various forms is possible. Using the temperature information required for control and the sensor information required for combustion control of the water heater 11, the thermistor T ₁
It is possible to promptly deal with a failure of a component other than the above.

Further, in the above embodiment, the sensor for measuring the flow rate of hot water is a flow sensor, but the flow rate measuring sensor may be another sensor such as an electromagnetic flow meter. Further, although the thermistor is used as the temperature detection sensor in the above embodiment, other temperature sensors such as thermocouples may be used.

[0049]

According to the present invention, each heat source unit is provided with various sensors including at least a flow sensor and a hot water temperature sensor necessary for combustion control for producing hot water, and a combustion control circuit. The sensor information is added to the combustion control circuit, and in addition to the combustion control circuit controlling combustion of the heat source device based on the sensor information, the sensor information is distributed and supplied to the system control circuit on the system side. The operation information of the hot water supply system can be controlled by utilizing the sensor information, and the operation control of the hot water supply system can be performed precisely and in various forms.

Further, the system control circuit uses the sensor information from the heat source side, so that even if a failure occurs in the system, the location of the failure can be determined quickly and accurately. Therefore, the worker or the like can quickly perform the failure processing based on the determination.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a large capacity hot water supply system in which operations are controlled by an operation control method of a large capacity hot water supply system including a composite heat source according to the present invention.

FIG. 2 is an explanatory diagram showing an example of an operation of the large capacity hot water supply system of FIG.

FIG. 3 is a hot water circulation pump 8 of the large capacity hot water supply system of FIG.
6 is a flowchart showing control by the system control circuit 16 when an error occurs in the above.

4 is a flowchart showing the substitute control of the other thermistor by the thermistor T ₁ failure when the system control circuit 16 of the large-capacity hot water supply system of FIG.

FIG. 5 is an explanatory diagram showing a large capacity hot water supply system in which two hot water heaters 11 operate as one set and sensor information is added to the system control circuit 16 for each hot water set 11;

[Fig. 6] Sensor information from the terminal 33 of the water heater 11 to the circuits 15 and 16
It is explanatory drawing which shows the example comprised so that it may distribute to the board | substrate 9.

FIG. 7 is an explanatory view showing a conventional large capacity hot water supply system.

[Explanation of symbols]

 1 Hot Water Storage Tank 3 Circulation Pipeline 6a to 6d Heating Circulation System 9 Sensor Board 11 Water Heater 15 Combustion Control Circuit 16 System Control Circuit 17 Hot Water Circulation Pipeline

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshihiko Tanaka, 3-4 Fukamidai, Yamato City, Kanagawa Prefecture, Gaster Co., Ltd. (72) Kazumi Suyama, 3-4, Fukamidai, Yamato City, Kanagawa Prefecture, Gaster Co., Ltd. ( 72) Inventor Gojin Inoue, 3-4 Fukamidai, Yamato City, Kanagawa Prefecture, Gaster Co., Ltd. (72) Inventor Takashi Kaneko 3-4, Fukamidai, Yamato City, Kanagawa Prefecture (72) Inventor, Hiroaki Fujita Kanagawa Prefecture 3-4 Fukamidai, Yamato-shi Gaster Co., Ltd.

Claims (2)

[Claims] 1. A circulation conduit provided with a plurality of heat source devices for producing hot water and a hot water storage tank for storing the hot water produced by these heat source devices, and for supplying hot water from the heat source device to the tank and keeping the hot water in the tank warm. Is provided between the tank and the heat source,
A method for controlling the operation of a hot water supply system in which hot water in the tank is supplied to each hot water supply destination, wherein each heat source device has at least a flow sensor and hot water required for fuel control for producing hot water. Various sensors including temperature sensor,
A combustion control circuit for performing combustion control based on the sensor information is provided, and a system control circuit for controlling the system operation is provided in the hot water supply system, and the sensor information of each heat source side is added to the combustion control circuit. In addition, it is distributed and supplied to the system control circuit on the system side, and the system control circuit uses the sensor information to control the operation of the hot water supply system. . 2. A configuration in which a plurality of heat source devices operate with two or more heat source devices as one set, and various sensor information including at least a flow sensor and a tap water temperature sensor is added to the system control circuit for each heat source device in each set. Claim 1 characterized in that
An operation control method for a large capacity hot water supply system provided with the composite heat source described in claim 1.