JP3806256B2 - Hot water floor heating system - Google Patents

Description

【表２】

【図面の簡単な説明】
【図１】本発明の一実施例の配管系統図。
【図２】同上の制御盤のブロック図。
【符号の説明】
１ 熱源機
２Ａ，２Ｂ 暖房床
３Ａ，３Ｂ 制御弁
４ 相関テーブル
５ 室温センサ
６ 制御盤
７ 端末器[0001]
[Industrial application fields]
The present invention relates to a floor heating system that supplies hot water from a single heat source machine to two heating floors in the same room.
[0002]
[Prior art]
Conventionally, the hot water of the heated floor is controlled by detecting the floor temperature. However, even if the floor temperature is high, people feel cold when the room temperature is low. Therefore, it is desirable to control the temperature of the heating floor at room temperature regardless of the presence or absence of an air heater. When the room is large, it is preferable from the viewpoint of energy saving to provide two heating floors in one room and cut off unnecessary ones or keep the temperature low. There are also cases where one wants to change the set temperature, such as one is a table floor and the other is a sofa floor. In such a case, the conventional configuration has the following problems.
[0003]
[Problems to be solved by the invention]
When hot water is controlled at room temperature in a room provided with two heating floors, the following problems arise if one room temperature sensor is provided for each heating floor. In other words, even if the temperature of the indoor air is partially high or low, the air mixes in a relatively short time due to convection and becomes a substantially uniform temperature. Therefore, when the set temperatures Ta and Tb of the two heating floors A and B are different from each other, the room temperature becomes an intermediate value (Ta + Tb) / 2 between the two and exceeds the lower set temperature, and eventually only one of the heating floors is used. Hot water will be supplied to one of them, so that one temperature setting becomes meaningless, and the other floor becomes cold and uncomfortable. The object of the present invention is to solve such problems.
[0004]
[Means for Solving the Problems]
As shown in FIG. 1, the hot water type floor heating system according to the present invention supplies hot water having a constant temperature from a single heat source unit 1 to the two heating floors 2A and 2B in the same room, and is connected to the piping of each system. In the floor heating system in which temperature control is performed by changing the on / off duty of the mounted control valves 3A and 3B, one of the two systems is designated as the priority system A and the other as the subordinate system B, and the priority control valve 3A is a room temperature sensor. Control is performed by a predetermined correlation function or correlation table 4 so that the difference between the output and the set room temperature becomes small, and the control valve 3B on the subordinate side approximates the correlation table 4 according to the set temperature difference from the priority side. By applying a bias to the temperature difference, the same correlation function or correlation table 4 is used.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
FIGS. 1 and 2 show an embodiment of a floor heating system according to the present invention. Hot water at a constant temperature (for example, 60 ° C.) is discharged from the heat source unit 1 regardless of the flow rate, and the pipe branches in the middle. Thus, it is supplied to the two heating floors 2A and 2B in the same room. Control valves 3A and 3B are interposed in the pipes of the systems A and B, respectively, and the heating floor 2A is changed by changing the on / off duty of the control valves 3A and 3B according to the output of the room temperature sensor 5. , 2B is controlled, whereby the room temperature is indirectly controlled. FIG. 2 shows an example of the configuration of the control panel 6. The CPU calculates the number of steps to be biased from the set temperatures Ta and Tb input from the terminal device 7 according to a predetermined program, and uses the correlation table 4. The on / off duty of each of the heating floors A and B is calculated with respect to room temperature that changes from time to time, and the control valves 3A and 3B are controlled based on the result. Table 1 shows an example of the correlation table 4.
[0006]
In the floor heating system of the present invention, the reason for controlling the on / off of hot water to the heating floor not by the floor temperature sensor but by the room temperature sensor 5 is that the floor heating feels comfortable to the human body when the room temperature is optimal. This is because, when the room temperature is low, a higher bed temperature is preferred, and when the room temperature is high, a lower bed temperature is preferred. Moreover, the reason why the two heating floors 2A and 2B are controlled by one room temperature sensor 5 is the same reason as described above, and if the room temperature is appropriate, the level of the floor temperature does not matter so much. .
[0007]
In the present invention, the two heating floors 2A and 2B are provided in the same room, and the control valves 3A and 3B are provided for the respective heating floors. However, since one room temperature sensor 5 needs to correspond to two different set temperatures, one is the priority system 2A, the other is the subordinate system 2B, and only the priority side A is the target. The normal temperature control is performed, and the subordinate side B is controlled approximately according to the set temperature difference (Ta-Tb). Specifically, the priority control valve 3A is continuously turned on, that is, the on-duty is 100% while the difference ΔT between the room temperature sensor output and the set room temperature is large, and ΔT is within a certain range (0.5 ° C. to −1. (0 ° C.), control is performed by a predetermined correlation table 4 so that the on-duty becomes smaller as ΔT becomes smaller. Further, the control valve 3B on the subordinate side B approximately biases the temperature difference ΔT of the correlation table 4 according to the set temperature difference with the priority side A (4 ° C. in the example of Table 2) (2 with respect to 4 ° C.). Step), both systems A and B can be controlled by the same correlation table 4 and, on the subordinate heating floor, the set temperature and the room temperature are greatly different, It is not completely turned off, and a minimum floor temperature that does not cause discomfort can be secured.
[0008]
Table 2 shows that the control valves 3A and 3B are controlled according to the correlation table 4 shown in Table 1 when the temperature settings of the priority system A and the subordinate system B are 24 ° C. and 20 ° C., respectively, in the system of the present invention. First, the operation of both systems A and B is started at a room temperature of 10 ° C., and initially, on / off = 20 minutes / 0 minutes, that is, the control valves 3A and 3B are continuously opened. When the temperature reaches 19.5 ° C., the subordinate side becomes ΔT = 0.5 ° C. No. 2 on 18 minutes / off 2 minutes. In this case, since the subordinate side B is biased by two steps with respect to the preferential side A, the preferential side A is No. 1 of 20 minutes / 0 minutes (because ΔT = 4.5 ° C.), the table No. 3 or 16 minutes / 4 minutes. In this state, when the room temperature further rises and reaches 23.5 ° C., the priority side A becomes ΔT = 0.5 ° C. and the table No. 2 to 18 minutes / 2 minutes, and accordingly, the subordinate side B changes the table number of 2 steps below. 4 or 14 minutes / 6 minutes. Furthermore, when the room temperature increases from 23.6 ° C to 23.7 ° C to 23.8 ° C to 23.9 ° C to 24 ° C, the priority side is 16 minutes / 4 minutes → 14 minutes / 6 minutes → 12 minutes / 8 minutes → 10 minutes / 10 minutes → 8 minutes / 12 minutes, and the subordinates will be accompanied by 12 minutes / 8 minutes → 10 minutes / 10 minutes → 8 minutes / 12 minutes → 6 minutes / 14 minutes → 4 minutes / 16 minutes After all, it will settle down in the vicinity of room temperature 24 ° C., which is the set temperature on the priority side.
[0010]
【The invention's effect】
According to the present invention, as described above, in the floor heating system that can perform the hot water control that matches the warm sense of the human body by controlling the hot water of the heating floor at room temperature, one room temperature sensor 5 can control 2 It is possible to control the heating floors A and B of the system, and even if different temperatures Ta and Tb are set for both heating floors, there is no risk of stopping the hot water of either heating floor, so the heating floor is cold. There is an advantage that the human body is not likely to be uncomfortable.
[Table 1]

[Table 2]

[Brief description of the drawings]
FIG. 1 is a piping system diagram of one embodiment of the present invention.
FIG. 2 is a block diagram of the control panel.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Heat source machine 2A, 2B Heating floor 3A, 3B Control valve 4 Correlation table 5 Room temperature sensor 6 Control panel 7 Terminal

Claims (2)

In a floor heating system of a type in which hot water of a constant temperature is supplied from a single heat source unit to two heating floors in the same room, and the temperature is controlled by changing the on / off duty of control valves interposed in the piping of each system The priority control valve is controlled by a predetermined correlation function or correlation table so that the difference between the room temperature sensor output and the set room temperature is small, with one of the two systems as the priority system and the other as the subordinate system. The control valve is controlled by the same correlation function or correlation table by giving a bias to the temperature difference of the correlation table approximately according to the difference of the set temperature with the priority system. Floor heating system. In a floor heating system of a type in which hot water of a constant temperature is supplied from a single heat source unit to two heating floors in the same room, and the temperature is controlled by changing the on / off duty of control valves interposed in the piping of each system When one of the two systems is a priority system and the other is a subordinate system, when the difference between the room temperature sensor output and the set room temperature falls within a certain range, the priority control valve has a smaller on-duty as the temperature difference decreases. The subordinate system is controlled by the same correlation table by giving a bias to the temperature difference of the above correlation table approximately according to the set temperature difference from the priority system in the subordinate system. Hot water type floor heating system characterized by that.

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