JP4497342B2 - Underfloor heating system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an underfloor type heating apparatus in which a radiator is installed under the floor so as to heat the upper floor room and the underfloor.
[0002]
[Prior art]
As a means of heating in cold regions, a radiator is installed under the floor, and warm air generated by the radiator is circulated to heat the floor room and the floor. The amount of heat released from the radiator is controlled by a signal from a room temperature sensor provided in the floor room where the occupants live.
[0003]
[Problems to be solved by the invention]
The human sensory temperature varies depending not only on the room temperature detected by the room temperature sensor in the living space, but also on the solar radiation entering from the window of the living space and the radiation temperature from the wall or floor. An object of the present invention is to obtain an apparatus for controlling the temperature so that a comfortable temperature can be obtained in consideration of these radiation temperatures.
[0004]
[Means for Solving the Problems]
One of the means for solving the above-described problem is that, as described in claim 1, a warm air outlet and a return port are provided on the floor separating the upper floor room and the lower floor, an underfloor radiator is installed under the floor, and the warm air is discharged from the lower floor to the warm air outlet, In the underfloor heating device provided with a controller that circulates through the floor room and the return port, and controls the amount of heat released by the room temperature signal from the room temperature sensor, a pipe for supplying hot water from the outside to the underfloor radiator is provided under the floor. The underfloor heating device is characterized in that the amount of hot water circulating in the pipe is controlled by adding the radiation temperature signal of the radiation temperature sensor for detecting the radiation temperature of the floor surface to the room temperature signal .
[0005]
According to a second aspect of the present invention, in the underfloor heating device according to the first aspect, the radiation temperature signal of the radiation temperature sensor that detects the radiation temperature of the floor surface, and the radiation temperature of the window or the wall surface, according to the first aspect. The amount of hot water circulating in the pipe is controlled by adding the radiation temperature signal of the radiation temperature sensor for detecting the temperature to the room temperature signal .
[0006]
According to these means, the underfloor radiator is controlled by the room temperature and the radiation temperature, so that the floor room is controlled to a comfortable temperature.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, 1 is a building, 2 is a floor, 3 is a floor room in which it resides, 4 is under the floor, and 5 is a window. The floor 2 has a warm air outlet 6 and a return port 7, and an underfloor radiator 8 is installed under the floor 4 facing the warm air outlet 6. Warm water is circulated from the boiler 9a installed outdoors to the underfloor radiator 8 by the pipe 9, and the warm air generated in the underfloor radiator 8 is heated from the underfloor 4 to the warm air outlet 6 by a difference in density due to heating or by an unillustrated blower. It circulates through the floor room 3 and the return port 7. The hot water circulation amount is adjusted by the thermal valve 10.
[0008]
A temperature controller 11 with a room temperature sensor 11 a is installed in the floor room 3, and a radiation temperature sensor 13 is attached to the ceiling 12. The radiation temperature sensor 13 receives infrared thermal energy radiated within a range of a set angle θ (for example, 65 °), converts the thermal energy into a thermoelectromotive force, and outputs an average temperature as a measurement signal. The temperature of solar radiation passing through the window 5 can be measured. The temperature controller 11 determines the control amount by the room temperature signal of the room temperature sensor 11 a and the radiation temperature signal of the radiation temperature sensor 13, and controls the amount of hot water by the thermal valve 10.
[0009]
FIG. 2 is a flowchart showing a control method in the temperature controller 11, and s indicates a step. After starting at s1, an average value of the radiation temperature for 5 minutes is obtained at s2, an average value of the room temperature for 5 minutes is obtained at s3, and an average value of the radiation temperature for 5 minutes is compared with the set value at s4.
[0010]
Here, the set value of the radiation temperature is a numerical value of a room temperature set value of −6 ° C. However, the temperature difference can be changed to −2, −4, −8 ° C. in addition to −6 ° C. by the DIP switch on the substrate.
[0011]
Next, in s5, the average value of the room temperature for 5 minutes is compared with the set value. In s6, it is determined that the radiation temperature is lower than the set value. If the room temperature is determined to be less than the set value + 2 ° C in s7, the thermal valve opens. The underfloor radiator 8 starts to dissipate heat, and if it is determined that it is higher than the set value + 2 ° C., the thermal valve is closed and the heat radiation of the underfloor radiator 8 decreases. If the radiation temperature is not lower than the set value in s6, it is determined in s9 whether or not the room temperature is equal to or higher than the set value -2 ° C. If it is higher, the thermal valve is closed. Open the valve.
[0012]
In the embodiment shown in FIG. 3, the radiation temperature sensor 13 is installed on the ceiling 12, detects the radiation temperature of the floor surface, and controls the temperature controller 11 by adding the signal to the room temperature signal. FIG. 4 shows an example of the control action of the temperature controller 11. After starting at s1, the average value of the radiant temperature for 5 minutes is obtained at s2, the average value for 5 minutes at room temperature is obtained at s3, and the radiant temperature and room temperature are obtained at s4 Find the difference. This temperature difference is normally about 2 ° C., but if it is different from this, the room temperature setting value is shifted in s5 based on Table T. In Table T, for example, when the temperature difference is −1 ° C. or less, the shift is + 2 ° C., when the temperature difference is 2 ° C., the shift is not performed, and when the temperature difference is 4 ° C. or more, the shift is −2 ° C. If the current room temperature is lower than the room temperature set value in s6, the thermal valve is opened in s7. If the current room temperature is not lower than the room temperature set value in s6, the thermal valve is closed in s8.
[0013]
As described above, since the room temperature is controlled in consideration of the radiation temperature of windows, walls, floors, etc., the room temperature can be matched to the human body temperature.
[0014]
In each of the above embodiments, the amount of hot water is controlled by the thermal valve 10, but it can also be controlled by turning on and off the hot water circulation pump.
[0015]
【The invention's effect】
In the present invention, the room temperature is controlled in consideration of the radiation temperature of windows, walls, floors, etc., so that the room temperature can be adjusted to the perceived temperature of the person and can be controlled so as not to feel too warm or cold. Therefore, a comfortable and energy-saving underfloor type heating apparatus can be provided.
[Brief description of the drawings]
FIG. 1 is a layout diagram illustrating an example of an embodiment of the present invention. FIG. 2 is a flowchart illustrating an example of a temperature control method. FIG. 3 is a layout diagram illustrating another example of an embodiment of the present invention. 4] Flow diagram showing another example of temperature control method [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Building 2 Floor 3 Floor room 4 Under floor 5 Window 6 Warm air outlet 7 Return port 8 Underfloor radiator 10 Thermal valve 11 Temperature controller 11a Room temperature sensor 12 Ceiling 13 Radiation temperature sensor

Claims (2)

A warm air outlet and return port are provided on the floor separating the upper floor room and the lower floor, and an underfloor radiator is installed under the floor. In the underfloor heating apparatus provided with a controller for controlling the amount of heat, a pipe for supplying hot water from the outside to the underfloor radiator is provided under the floor, and the underfloor heating apparatus detects the radiation temperature of the floor surface. An underfloor type heating apparatus that controls the amount of hot water circulating through a pipe by adding a radiation temperature signal of a radiation temperature sensor to a room temperature signal . The amount of hot water circulating through the pipe is calculated by adding the radiation temperature signal of the radiation temperature sensor for detecting the radiation temperature of the floor surface and the radiation temperature signal of the radiation temperature sensor for detecting the radiation temperature of the window or wall surface to the room temperature signal. The underfloor type heating device according to claim 1, wherein the underfloor type heating device is controlled.

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