JPH10325550A - Method and device for controlling operation in hot water floor heating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the temperature of a floor heating side from exceeding a set value by controlling the interval of the circulation time of hot water to be circulated in a floor heating device to be longer than the regular time interval when the floor heating device and an indoor heating device are simultaneously in operation in a heating system provided with the floor heating device and the indoor heating device. SOLUTION: Hot water from a heat source device 1 passes through a circulation circuit into an air conditioner 4 through a hot water header 6 and a hot water circulation circuit 9 in the heating mode, while hot water from the heat source device 1 passes through a circulation circuit into a hot water mat 5 through a cold water header 7 and a cold water circulation circuit 10 in the floor heating mode. When a floor heating device and an indoor heating device are simultaneously in operation, a control circuit 16a of a floor heating controller 16 switches the operation mode so that the interval of the preset hot water circulation time is longer, and reduces the heat radiation time per unit time, the heat radiation corresponding to the temperature rise of hot water is reduced by the reduction to prevent the floor heating temperature from being excessively high during the simultaneous operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for controlling the operation of a system for performing hot water floor heating and indoor heating using a single heat source unit.

[0002]

2. Description of the Related Art FIG. 2 is a block diagram showing a system for performing hot water floor heating and indoor heating using a single heat source unit. 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 side thermistor, 12 is a low temperature side thermistor, 13 is a cistern, 14 is a circulating pump, 15 is a thermal valve mounted on the low temperature water header 7, 16 is a floor heating controller, and 17 is a signal line.

[0003] In the above system, during heating, hot water of 80 ° C is supplied from the heat source unit 1 to the high-temperature water header 6 → high-temperature water circulation circuit 9.
→ Air conditioner 4 → High-temperature water circulation circuit 9 → Return header 8 → Heat source unit 1 circulates, and at the time of floor heating, hot water of 60 ° C. is supplied from heat source unit 1 to low-temperature water header 7 → Low-temperature water circulation circuit 10 → Hot water mat 5 → Low-temperature water circulation circuit It circulates from 10 → return header 8 → heat source device 1.

When hot water heating and floor heating are operating simultaneously, the heat source unit 1 is operated at 80 ° C.
Circulates hot water of 80 ° C. on the other hand, while the air conditioner 4 and the hot water mat 5
The hot water mixed with the return hot water from the water and the 80 ° C. hot water, which has been reduced to about 70 ° C., is circulated by bypassing the heat exchanger 3. 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 of the hot water heating, and always determines the difference between the set temperature and the current room temperature.

[0005]

As described above, since the method of setting the room temperature during floor heating does not change during simultaneous operation, the time is set based on 60 ° C. during single operation. When the hot water of about 70 ° C. circulates in the simultaneous operation, there is a problem that the temperature of the circulating hot water is increased, resulting in overheating, that is, a higher room temperature.

[0006] The present invention has been proposed in view of the above point, and an object of the present invention is that when floor heating and indoor heating are simultaneously operated, the floor heating side is set to a temperature higher than a set temperature. It is an object of the present invention to propose an operation control method for performing control so as not to be too high, and this operation control device.

[0007]

The constitution of the present invention proposed to achieve the above object is as follows. 1. One heat source device, a floor heating device that circulates hot water generated by the heat source device in the hot water mat to perform floor heating, and circulates the hot water generated by the heat source device in the 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. If the floor heating device and the room heating device are operating simultaneously, the floor heating device and the room heating device are operating simultaneously in the hot water floor heating system configured to automatically control the hot water temperature to the room heating temperature when the floor heating and the room heating device are operating at the same time. An operation control method in a hot-water floor heating system that controls a circulation time interval of hot water circulated in a hot water mat of a floor heating device to be longer than a normal time interval.

[0008] 2. The temperature of the hot water discharged from the heat source unit during the operation of the floor heating device is set to 60 ° C, the temperature of the hot water discharged from the heat source device during the operation of the indoor heating device is set to 80 ° C, and the operation of the floor heating device and the indoor heating device are performed simultaneously. In this case, by setting the temperature of the hot water discharged from the heat source unit to 80 ° C., during this simultaneous operation, when the hot water of about 70 ° C. circulates on the floor heating device side, the floor heating device Controlling the circulation time interval of the hot water in the floor heating device determined by the set temperature input to the controller to be longer than the time interval set on the assumption that the hot water of 60 ° C. circulates, 2. The operation control method in the hot-water floor heating system according to the above item 1, wherein the amount of heat released per hour is approximated at the time of independent operation to prevent overheating.

3. When the floor heating device and the indoor heating device are operating at the same time, the time interval during which the hot water circulates in the floor heating device, based on the temperature of the hot water returning to the heat source unit and the difference between the set temperature of the floor heating device and the current room temperature 3. The operation control method in the hot water floor heating system according to the above 1 or 2, wherein the operation is performed, and the circulation time interval is controlled based on this value.

[0010] 4. A heat source device capable of controlling the temperature of hot water at 80 ° C. and 60 ° C., a floor heating device for circulating hot water from the heat source device at 60 ° C. through a hot water pipe in a hot water mat to perform floor heating, and the heat source device When the floor heating device and the indoor heating device are operating at the same time, an indoor heating device that circulates hot water from the heat source at 80 ° C. through the heat exchanger to heat the room, and discharges the hot water from the heat source device. When the temperature is controlled to 80 ° C. and hot water is supplied, and during this simultaneous operation, the time interval of the hot water circulating in the floor heating device is set to be longer than the time interval set on the assumption of the single operation, An operation control device for a hot-water floor heating system, comprising: a control circuit for returning the heating device to the first set time interval when the heating device is controlled to be operated independently.

5. From the difference between the set temperature input to the controller of the floor heating device and the current room temperature and the temperature of the hot water circulating in the hot water mat of the floor heating device, the time interval of the hot water circulating in the floor heating device is determined. 5. The operation control device in the hot-water floor heating system according to the above 4, wherein the operation is controlled by a microcomputer to control the circulation time interval.

6. 6. The hot water floor according to the above 4 or 5, wherein when the floor heating device and the indoor heating device are operating at the same time, the time during which the hot water circulates in the hot water mat is controlled to be shorter than at 60 ° C. Operation control device in the heating system.

[0013]

When the floor heating device and the room heating device are simultaneously operated, 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. As a result, the amount of hot water circulating in the hot water mat per hour is reduced.
This decreasing amount is about 1 ° C, rising from 60 ° C to about 70 ° C.
This is the amount of heat radiation for 0 ° C. When the simultaneous operation ends,
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]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A heat source unit to which the present invention is applied has one gas burner and a heat exchanger, and supplies hot water for floor heating and room heating with this common gas burner and heat exchanger. It is a method of doing.

[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 An embodiment of the present invention (claims 1 to 5) will be described in detail 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, 5 is a hot water mat for floor heating,
6 is a high-temperature water header for discharging hot water of 80 ° C., 7 is 60
The 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. The hot water mat 5 is the low temperature water header 7 and the return header 8. And low-temperature water circulation circuit 1
They are tied at 0. In the figure, 11 is a high temperature side thermistor, 12
Is a low temperature side thermistor, 13 is a cistern, 14 is a circulation pump, 15 is a thermal valve mounted on the low temperature water header 7, 16 is a floor heating controller, and 17 is a signal line.

In the above system, at the time of heating, hot water of 80 ° C. is supplied from the heat source unit 1 to the high-temperature water header 6 → the high-temperature water circulation circuit 9.
→ Air conditioner 4 → High-temperature water circulation circuit 9 → Return header 8 → Heat source unit 1 circulates, and at the time of floor heating, hot water of 60 ° C. is supplied from heat source unit 1 to low-temperature water header 7 → Low-temperature water circulation circuit 10 → Hot water mat 5 → Low-temperature water circulation circuit It circulates from 10 → return header 8 → heat source device 1.

Next, when the room heating device starts operating while the floor heating device is operating alone, or when the floor heating device starts operating while the room heating device is operating, the floor heating device and the room heating device are connected. In the simultaneous operation state, the signal line 1
A signal is input to the floor heating controller 16 via the controller 7. The control circuit 16a in the floor heating controller 16 includes:
When this signal is input, the operation mode is switched so that the circulation time interval (interval) of the hot water set up to that time becomes long, and the heat radiation time per hour is shortened. The amount of heat radiation corresponding to the rising temperature of the hot water circulating at 70 ° C. is reduced, thereby solving the problem that the floor heating temperature becomes too high during the simultaneous operation.
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) initially set to the circulation time interval of the hot water.

In the above embodiment, it has been described that the circulation time interval of the hot water is set to be long during the simultaneous operation.
The time during which the hot water circulates can also be controlled by setting it to be short, and is substantially the same.

[0020]

Embodiment 2 In Embodiment 1, when the simultaneous operation is started, the operation mode is switched to the preset simultaneous operation mode. However, in the present embodiment, when the simultaneous operation is started, the air conditioner 4 and the air conditioner 4 are switched. Return hot water from the hot water mat 5 side and 80 ℃
Since the temperature of the hot water mixed with the hot water is not always about 70 ° C., the temperature of the hot water mixed with the return hot water and the 80 ° C. hot water is detected by the low-temperature thermistor 12,
From the difference between the temperature of the hot water detected by the thermistor 12, the set temperature input to the floor heating controller 16, and the current room temperature, the circulating time interval of the hot water circulating in the hot water mat 5 or the circulating time Is calculated, and control is performed based on this value.

[0021]

As described above, according to the present invention, when the floor heating and the indoor heating are simultaneously operated, the amount of hot water circulated in the floor heating hot water mat can be compared with that during the single operation. As a result, there is no worry that the floor heating temperature will be too high during simultaneous operation with 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 systan 14 circulation pump 15 heat valve 16 Floor heating controller 16a Control circuit 17 Signal line

Claims (6)

[Claims] 1. A heat source device, a floor heating device for circulating hot water generated by the heat source device in a hot water mat to perform floor heating, and circulating hot water generated by the heat source device in a heat exchanger. An indoor heating device for performing indoor heating by controlling the hot water to the floor heating temperature when the floor heating device is operating alone, and when the indoor heating device is operating alone, Is controlled to the indoor heating temperature, and when the floor heating and the indoor heating device are operating at the same time, in the hot water type floor heating system configured to automatically control the tap water temperature to the indoor heating temperature, the floor heating device and the indoor heating device are In the case of simultaneous operation, the circulation time interval of the hot water circulated in the hot water mat of the floor heating device,
An operation control method in a hot-water floor heating system that performs control so as to be longer than a normal time interval. 2. The temperature of hot water discharged from the heat source unit during operation of the floor heating device is set to 60 ° C., and the temperature of hot water discharged from the heat source device during operation of the indoor heating device is set to 80 ° C. When the operation of is performed at the same time,
By setting the temperature of hot water discharged from the heat source unit to 80 ° C., during this simultaneous operation, when hot water of about 70 ° C. circulates to the floor heating device side, the setting input to the controller of the floor heating device. The circulation time interval of the hot water in the floor heating device determined by the temperature is controlled so as to be longer than the time interval set on the assumption that the hot water of 60 ° C. circulates, so that the heat radiation amount per hour is solely controlled. The operation control method in the hot-water floor heating system according to claim 1, wherein overheating is prevented by approximation during operation. 3. When the floor heating device and the indoor heating device are operated at the same time, the temperature of the hot water returned to the heat source unit and the difference between the set temperature of the floor heating device and the current room temperature are determined. The operation control method in the hot water floor heating system according to claim 1 or 2, wherein a time interval for circulating is calculated, and the time interval for circulating is calculated based on this value. 4. A heat source device capable of controlling the temperature of tap water to 80 ° C. and 60 ° C., and a floor heating device for circulating hot water from the heat source device at 60 ° C. to a hot water pipe in a hot water mat to perform floor heating. And, an indoor heating device that circulates hot water discharged at 80 ° C. from the heat source device into a heat exchanger to heat the room, and when the floor heating device and the indoor heating device are operating at the same time, The tapping temperature from the heat source unit is controlled at 80 ° C. and the tapping is performed, and in this simultaneous operation, the time interval of the hot water circulating in the floor heating device is longer than the time interval set on the assumption of the single operation. And a control circuit for returning to the first set time interval when the floor heating device is controlled to operate alone, and an operation control device in the hot water floor heating system. 5. A system for circulating in a floor heating device based on a difference between a set temperature input to a controller of the floor heating device and a current room temperature and a temperature of hot water circulating in a hot water mat of the floor heating device. 5. The operation control device according to claim 4, wherein a time interval of the hot water is calculated by a microcomputer to control a circulation time interval. 6. When the floor heating device and the indoor heating device are operating at the same time, control is performed such that the time during which hot water is circulated in the hot water mat is shorter than at 60 ° C. 6. An operation control device in the hot water floor heating system according to 5.