JP3560271B2 - Operation control method in hot-water floor heating system - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to the operation control method of the system for using the hot water floor heating and space heating and single heat source machine.
[0002]
[Prior art]
FIG. 2 shows a configuration diagram of a system for performing hot water floor heating and indoor heating using a single heat source device. In FIG. 2, 1 is a heat source unit, 2 is a gas burner, 3 is a heat exchanger, 4 is an air conditioner, 5 is a hot water mat, 6 is a high-temperature water header for supplying 80 ° C. hot water, and 7 is a 60 ° C. hot water supply. The low temperature water header 8 is a return header, the air conditioner 4 is connected to the high temperature water header 6 and the return header 8 by a high temperature water circulation circuit 9, and the hot water mat 5 is connected to the low temperature water header 7, the return header 8 and the low temperature water circulation circuit 10 Are tied together. In the figure, 11 is a high- temperature thermistor attached to the high- temperature tapping line 18 , 12 is a low- temperature thermistor attached to the low- temperature tapping line 19 , 13 is a cistern, 14 is a circulation pump, and 15 is heat attached to the low-temperature water header 7. Valves, 16 is a floor heating controller, 17 is a signal line , 20 is a return line from the return header 8 to the heat exchanger 3 via the cistern 13, 21 is a bypass line connecting the high-temperature hot water supply line 18 and the return line 20. is there.
[0003]
In the above system, at the time of heating, hot water of 80 ° C. is circulated from the heat source unit 1 to the high-temperature water header 6 → the high-temperature water circulation circuit 9 → the air conditioner 4 → the high-temperature water circulation circuit 9 → the return header 8 → the heat source unit 1. The hot water of 60 ° C. circulates from the machine 1 through the low temperature water header 7 → the low temperature water circulation circuit 10 → the hot water mat 5 → the low temperature water circulation circuit 10 → the return header 8 → the heat source device 1.
[0004]
Further, when the hot water heating and the floor heating are operating at the same time, the heat source unit 1 is operated at 80 ° C., and the hot water of 80 ° C. is circulated from the high temperature hot water supply line 18 to the air conditioner 4 side. , the hot water mat 5 side, a hot water hot water 80 ° C. is mixed from the air conditioner 4 and the bypass line 21 to the hot water went back from the hot water mat 5, the heat exchanger 3 the hot water was reduced to about 70 ° C. Hot water is supplied from the low-temperature hot water supply line 19 to be bypassed and circulated. Then, as a method for automatically controlling to the set temperature set by the floor heating controller 16, an interval of circulating hot water for 3 minutes for every 20 minutes, for example, for 20 minutes depending on the difference between the set room temperature and the current room temperature. Control. This control does not distinguish between the case of the floor heating operation alone and the case of the simultaneous operation with the hot water heating, and always determines the difference between the set temperature and the current room temperature.
[0005]
[Problems to be solved by the invention]
As described above, since the method of setting the room temperature during floor heating does not change during the simultaneous operation, when the time is set on the assumption of 60 ° C. in the single operation, the hot water of about 70 ° C. in the simultaneous operation is set. Circulates, there is a problem that the temperature of the circulating hot water is increased, resulting in overheating, that is, an increase in room temperature.
[0006]
The present invention has been proposed in view of the above point, and an object thereof is that when floor heating and indoor heating are simultaneously operated, the floor heating side is excessively higher than the set temperature. it is to propose a driving control how to control so as not.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, in the invention according to claim 1, in the operation control method in the hot water floor heating system , one heat source device and hot water generated by the heat source device are circulated in the hot water mat. A floor heating device for performing floor heating, and an indoor heating device for performing indoor heating by circulating hot water generated by the heat source device in a heat exchanger, and further, when the floor heating device is operating alone. The hot water is controlled to the floor heating temperature, and when the indoor heating device is operating alone, the hot water is controlled to the indoor heating temperature. When the floor heating device and the indoor heating device are operating simultaneously, the indoor heating temperature is controlled. The hot water supply from the heat source unit is automatically controlled , and the supply of hot water to the floor heating device side is performed before the indoor heating device and the return line from the floor heating device side to the heat exchanger in the heat source device. From the branched low temperature hot water supply line, before The high-temperature water discharged from the heat exchanger in the heat source unit is supplied from the high-temperature discharge line, and the high-temperature discharge line is branched and the branched bypass line is returned to the return line at a position higher than the position where the low-temperature discharge line is connected. in hot water floor heating system configuration connected to the upstream side, the high temperature operation of the floor heating device and the room heating devices if they are made at the same time is supplied to the space heating apparatus via said bypass line A part of the water is mixed into the return line, and when this mixing causes hot water to circulate from the low-temperature hot water supply line to the floor heating device side as compared with the floor heating device alone operation, input to the floor heating device controller. The circulation time interval of the hot water in the floor heating device determined by the set temperature is set to the time interval set on the assumption that the hot water circulates during the floor heating device alone operation. Is also controlled to be longer, when performing control to prevent overheating by approximating the amount of heat released per hour during single operation, the temperature of the hot water supplied to the floor heating device from the low-temperature hot water supply line and From the difference between the set temperature of the floor heating device and the current room temperature, the time interval for circulating hot water in the floor heating device is calculated, and based on this value, the time interval for circulating hot water in the floor heating device is controlled. It is characterized by the following.
[0013]
[Action]
When the floor heating device and the indoor heating device enter the simultaneous operation, a signal is input from the heat source device to the floor heating controller, and the operation mode is switched to the simultaneous operation mode. The controller calculates the time interval of the hot water circulating in the floor heating device from the difference between the temperature of the hot water supplied from the low-temperature hot water supply line to the floor heating device, the set temperature, and the current room temperature. Control the time interval of the circulating hot water. As a result, the amount of hot water circulating in the hot water mat per hour is reduced. This decreasing amount is a heat radiation amount for about 10 ° C. in which the warm water supplied to the floor heating device rises from 60 ° C. to about 70 ° C.
When the simultaneous operation is completed, a signal is input again from the heat source device to the floor heating controller, and the simultaneous operation mode is switched to the floor heating independent operation mode.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
The heat source unit to which the present invention is applied has a single gas burner and a heat exchanger, and supplies hot water for floor heating and room heating with the common gas burner and heat exchanger.
[0015]
The floor heating device and the indoor heating device are known.
However, in the conventional system, the controller (remote control) for the floor heating and the indoor heating and the heat source device are in one direction from the terminal to the heat source device. Since it is necessary to sense the start and end of operation, two-way communication is enabled.
[0016]
Embodiment 1
Detailing an embodiment of the present onset bright with reference to FIG.
1 is a heat source unit, 2 is a gas burner, 3 is a heat exchanger, 4 is an air conditioner (indoor heating device) , 5 is a hot water mat for floor heating, and 6 is hot water of 80 ° C. supplied from a high temperature hot water supply line 18. A high-temperature water header, 7 is a low- temperature water header for tapping hot water of 60 ° C. supplied from a low-temperature tapping line 19 , 8 is a return header, and the air conditioner 4 is a high-temperature water header 6 and a return header 8 and a high-temperature water circulation circuit 9. The hot water mat 5 is connected to the low temperature water header 7 and the return header 8 by a low temperature water circulation circuit 10. In the figure, 11 is a high- temperature thermistor attached to the high- temperature tapping line 18 , 12 is a low- temperature thermistor attached to the low- temperature tapping line 19 , 13 is a cistern, 14 is a circulation pump, and 15 is heat attached to the low-temperature water header 7. Valves, 16 is a floor heating controller, 17 is a signal line , and 21 is a bypass line connecting the high-temperature hot water line 18 and the low-temperature hot water line 19 .
[0017]
In the above system, at the time of heating, hot water of 80 ° C. is circulated from the heat source unit 1 to the high-temperature water header 6 → the high-temperature water circulation circuit 9 → the air conditioner 4 → the high-temperature water circulation circuit 9 → the return header 8 → the heat source unit 1. The hot water of 60 ° C. circulates from the machine 1 through the low temperature water header 7 → the low temperature water circulation circuit 10 → the hot water mat 5 → the low temperature water circulation circuit 10 → the return header 8 → the heat source device 1.
[0018]
Next, when the indoor heating device starts operating while the floor heating device is operating alone, or the floor heating device starts operating while the indoor heating device is operating, and the floor heating device and the indoor heating device are simultaneously operated. Then, a signal is input from the heat source unit 1 to the floor heating controller 16 via the signal line 17. When this signal is input, the control circuit 16a in the floor heating controller 16 detects the temperature of the low-temperature water discharged from the low-temperature tapping line 19 with the low-temperature thermistor 12, and detects the detected temperature and the set temperature. The warm water circulation time interval (interval) is calculated from the difference with the room temperature , the operation mode is switched, and the heat radiation time per hour is shortened. By this shortening, the rising temperature of the warm water circulating from 60 ° C. to about 70 ° C. Therefore, the problem that the floor heating temperature becomes too high during the simultaneous operation is eliminated. Then, when the operation of the indoor heating device is stopped and it is not in the simultaneous operation state, the control circuit 16a switches to the single operation mode (time interval) of the floor heating device set first with the circulation time interval of the hot water.
[0019]
In the above-described embodiment, it has been described that, during the simultaneous operation, the circulation time interval of the hot water is set to be long, but it is also possible to control the method by setting the circulation time of the hot water to be short. It is.
[0020]
Thus, the present invention is a floor heating system and the room heating device when entering the simultaneous operation, the hot water went back from the air conditioner 4 side and hot water mat 5 side, hot water is mixed by the hot water 80 ° C. Since the temperature is not always about 70 ° C., the temperature of the hot water obtained by mixing the return hot water and the hot water of 80 ° C. is detected by the low-temperature thermistor 12, and the temperature of the hot water detected by the thermistor 12 and the floor temperature are detected. From the difference between the set temperature input to the heating controller 16 and the current room temperature, the circulation time interval or circulation time of the hot water circulating in the hot water mat 5 is calculated, and control is performed based on this value. is there.
[0021]
【The invention's effect】
As described above, the present invention reduces the amount of hot water circulated in the floor heating hot water mat per hour when the floor heating and the indoor heating enter the simultaneous operation, as compared with the single operation. since the control to, there is no worry that the floor heating temperature is made too high at the time of simultaneous operation of the hot water heating.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of an embodiment according to the present invention.
FIG. 2 is an explanatory diagram of a conventional hot-water floor heating system.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 heat source unit 2 gas burner 3 heat exchanger 4 air conditioner 5 hot water mat 6 high temperature water header 7 low temperature water header 8 return header 9 high temperature water circulation circuit 10 low temperature water circulation circuit 11 high temperature side thermistor 12 low temperature side thermistor 13 cistern 14 circulation pump 15 heat valve 16 Floor heating controller 16a Control circuit 17 Signal line
18 Hot water supply line
19 Low temperature hot water supply line
20 Return line
21 Bypass line

Claims (1)

One heat source device, a floor heating device that circulates hot water generated by this heat source device in a hot water mat to perform floor heating, and circulates hot water generated by the heat source device in a heat exchanger to perform indoor heating. Further, when the floor heating device is operating alone, the hot water is controlled to the floor heating temperature, and when the indoor heating device is operating alone, the hot water is adjusted to the room heating temperature. controlling, when in operation floor heating system and the room heating device is at the same time, the hot water temperature from the heat source unit to the indoor heating temperature be configured to automatically control, the hot water supply to the floor heating apparatus, indoor The return line from the heating device and the floor heating device side is performed from the low-temperature tapping line branched before reaching the heat exchanger in the heat source unit, and the high-temperature water discharged from the heat exchanger in the heat source unit is performed from the high-temperature tapping line. Branch off this hot water supply line In the said bypass line went back lines, in the low-temperature hot water hot water floor heating system configuration line is connected upstream of the tied position, the operation of the floor heating device and the room heating device is being performed at the same time In this case, a part of the high-temperature water supplied to the indoor heating device through the bypass line is mixed into the return line, and the mixing is performed during the sole operation of the floor heating device from the low-temperature hot water supply line to the floor heating device. When hot water having a higher temperature is circulated, the circulation time of the hot water in the floor heating device determined by the set temperature input to the controller of the floor heating device is determined by the circulation of the hot water in the floor heating device alone operation. When performing control to prevent overheating by controlling the heat release amount per hour to approximate the time of isolated operation by controlling so as to be longer than the time interval set on the assumption that From the temperature of the hot water supplied from the low-temperature hot water supply line to the floor heating device, and the difference between the set temperature of the floor heating device and the current room temperature, calculate the time interval during which the hot water circulates in the floor heating device. An operation control method in a hot-water floor heating system that controls a time interval at which hot water circulates in the floor heating device based on the floor heating system .

Images