JP2002267187A - Underfloor heating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control a heating apparatus using an underfloor radiator so that the temperature of a room above the floor becomes a comfortable, effective temperature. SOLUTION: A radiation temperature sensor 13 for detecting the radiation temperature of a window, a wall, or a floor surface is provided in a room 3 above the floor, its radiation temperature signal is added to the room temperature signal in a room temperature sensor 11a, thus controlling the amount of heat radiation in the heat radiator 8 below the floor via a temperature controller 11 and a thermally actuated valve 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underfloor type heating apparatus in which a radiator is installed under the floor to heat the room above and below the floor.

[0002]

2. Description of the Related Art As a heating means in a cold region, a radiator is installed under the floor to circulate warm air generated by the radiator to heat the room above the floor and the floor underneath. The control is performed by controlling the heat radiation amount of the radiator in accordance with the signal of the room temperature sensor provided in the room above the floor where the person lives.

[0003]

The sensible temperature of a person depends 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 provide a device for controlling the temperature so as to obtain a comfortable sensible temperature in consideration of the radiation temperature.

[0004]

According to one aspect of the present invention, a warm air outlet and a return port are provided on a floor that separates an underfloor room from an underfloor, and a radiator under the floor is installed under the floor. Then, the under-floor heating device circulates the warm air from under the floor through the warm air outlet, the floor above the room, and the return port, and detects the radiation temperature of the window or the wall surface in the under-floor heating device including the controller that controls the amount of heat radiation by the room temperature signal from the room temperature sensor. The radiation temperature signal of the radiation temperature sensor is
The control is performed in consideration of the room temperature signal.

Another solution is to provide a warm air outlet and a return port on the floor separating the room above and below the floor, install a radiator below the floor, and radiate warm air from below the floor. In the underfloor heating device equipped with a controller that circulates through the room above the floor and the return port and controls the amount of heat released by the room temperature signal from the room temperature sensor, the radiant temperature signal of the radiant temperature sensor that detects the radiant temperature of the floor surface is converted to the room temperature. The control is performed in consideration of the signal.

[0006] According to these means, the underfloor radiator is controlled by the room temperature and the radiation temperature, so that the room above the floor is controlled to a comfortable sensible temperature.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a building, 2 is a floor, 3 is a room on the floor in which to live, 4 is below 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. Underfloor radiator 8
The hot water is circulated by a pipe 9 from a boiler 9a installed outdoors, and the warm air generated by the underfloor radiator 8 is heated from the underfloor 4 to the warm air outlet 6 by a blower (not shown). Circulates through the return port 7. The hot water circulation amount is adjusted by the thermal valve 10.

In the room 3 above the floor, a temperature controller 11 with a room temperature sensor 11a is installed.
3 is attached. 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 sunlight passing through the window 5 can be measured. The temperature controller 11 determines a control amount based on 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.

FIG. 2 is a flowchart showing a control method in the temperature controller 11, where s indicates a step. After starting at s1, an average value of the emission temperature for 5 minutes is obtained at s2, an average value of the room temperature for 5 minutes is obtained at s3, and the average value of the emission temperature is compared with the set value at s4.

Here, the set value of the radiation temperature is a numerical value of the set value of the room temperature minus 6 ° C. However, the difference in temperature was changed to -2, -4, and -6 ° C.
It can be changed to -8 ° C.

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 it is determined in s7 that the room temperature is equal to or lower than the set value + 2 ° C., the thermal valve is opened and the underfloor radiator 8 starts radiating heat. If it is determined that the room temperature is higher than the set value + 2 ° C., the thermal valve is closed and the underfloor radiator 8 is closed. Heat radiation is reduced. If the radiation temperature is not lower than the set value in s6, it is determined whether or not the room temperature is equal to or higher than the set value -2 ° C in s9. If it is, the thermal valve is closed. Open the valve.

In the embodiment shown in FIG. 3, the radiation temperature sensor 13 is installed on the ceiling 12, detects the radiation temperature on the floor surface, and adds the signal to the room temperature signal to make the temperature controller 1
Control with 1. FIG. 4 shows one of the control actions of the temperature controller 11.
An example is shown. After starting in s1, an average value of the emission temperature for 5 minutes is obtained in s2, an average value of room temperature for 5 minutes is obtained in s3, and a difference between the emission temperature and the room temperature is obtained in s4. This temperature difference is usually 2 ° C
If not, if not, s based on Table T
5 shifts the room temperature set value. 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, no shift is performed. When the temperature difference is 4 ° C or more,-is shifted.
Shift 2 ° C. If the current room temperature is lower than the room temperature set value in s6, the thermal valve is opened in s7, and if the current room temperature is not lower than the room temperature set value in s6, the thermal valve is closed in s8.

As described above, since the room temperature is controlled in consideration of the radiation temperature of windows, walls, floors, and the like, the room temperature can be adjusted to the temperature felt by a person.

In the above embodiments, the amount of hot water is controlled by the thermal valve 10, but it can also be controlled by turning on / off a hot water circulation pump.

[0015]

According to the present invention, since the room temperature is controlled in consideration of the radiation temperature of windows, walls, floors, etc., the room temperature can be adjusted to the temperature felt by a person, so that the user does not feel too warm or cold. Because it can be controlled, a comfortable and energy-saving underfloor heating device can be provided.

[Brief description of the drawings]

FIG. 1 is a layout diagram showing an example of an embodiment of the present invention.

FIG. 2 is a flowchart showing an example of a temperature control method.

FIG. 3 is a layout diagram showing another example of the embodiment of the present invention.

FIG. 4 is a flowchart showing another example of the temperature control method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Building 2 Floor 3 Above-floor room 4 Underfloor 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)

[Claims] 1. A warm air outlet and a return port are provided on the floor that separates the room above and below the floor, a radiator under the floor is installed under the floor, and warm air is circulated from under the floor through the warm air outlet, the room above the floor, and the return port. In the underfloor heating device equipped with a controller that controls the amount of heat radiation with the room temperature signal, the radiation temperature signal of the radiation temperature sensor that detects the radiation temperature of the window or the wall is controlled in consideration of the room temperature signal. Underfloor heating system. 2. A warm air outlet and a return port are provided on the floor that separates the room above and below the floor, a radiator under the floor is installed under the floor, and warm air is circulated from under the floor through the warm air outlet, the floor above the room, and the return port. An underfloor heating device having a controller for controlling the amount of heat radiation with a room temperature signal, wherein a radiation temperature signal of a radiation temperature sensor for detecting a radiation temperature of a floor surface is controlled in consideration of a room temperature signal. Underfloor heating system.