JPH0792707B2 - Humidity control signal output device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a humidity control signal output device that generates a start / stop control signal for a humidity control device such as a dehumidifier / humidifier or a ventilation fan.

2. Description of the Related Art In recent years, interest in health and comfort has increased, and accordingly, suppression of growth of molds on surfaces such as walls and ceilings is becoming more important.

The conventional humidity control signal output device used to suppress the growth of mold detects humidity in the indoor space and controls the humidity control equipment such as a dehumidifier / humidifier and a ventilation fan.

In that case, even if the humidity is controlled during heating in winter, dew condensation may occur on the walls and ceiling of the building, which may cause mold. As a result, a bad odor or asthma may be adversely affected. Therefore, an appropriate humidity control signal output device for controlling the humidity control device has been desired.

Hereinafter, a conventional humidity control signal output device as described above will be described with reference to the drawings. FIG. 3 shows a conventional humidity control signal output device. The humidity control signal output device is composed of the indoor relative humidity detecting means 2 and the control means 4, and controls the operation of the humidity adjusting device 5. The indoor relative humidity detecting means 2 detects the indoor relative humidity H _r and converts it into an electric signal, and the output signal thereof is transmitted to the control means 4. The control means 4 compares the set value with the power value of the dehumidifier / humidifier, which is the humidity adjusting device 5, to keep the indoor humidity _Hr at the set value. FIG. 4 shows the relationship between the dehumidifier start / stop operation and the indoor relative humidity in a room where the relative humidity is increasing. When the relative humidity in the room becomes higher than the first set value L1, the humidity control signal is turned on and the dehumidifier operates to start dehumidification. Further, when the indoor relative humidity becomes lower than the second set value L2, the dehumidifier stops operating. In this way, the relative humidity inside the room was maintained at a constant value near the installation value.

Problems to be Solved by the Invention However, with the above-described configuration, it is difficult to set an appropriate humidity value. If you set a low humidity value, you will be more likely to be affected by influenza, and if you set a higher value, the surface temperature of parts such as the walls and ceiling of a room that is being heated will be affected by the outside air temperature due to a decrease in the outdoor temperature in winter. However, the relative humidity of the air in contact with these parts increased, and as a result, mold formation was observed in those parts, and there was a problem that asthma and the like could be affected.

In consideration of the above-mentioned conventional problems, the present invention prevents the condensation on walls, ceilings, etc., suppresses the generation of mold, and controls the relative humidity so as to prevent the occurrence of influenza due to a decrease in humidity as well as a humidity control signal. It is an object of the present invention to provide a humidity control signal output device that generates a noise and inputs it to a humidity adjusting device.

Means for Solving the Problems To achieve this object, the humidity control signal output device of the present invention is
An indoor temperature detecting means, an indoor humidity detecting means, and an outside air temperature detecting means are provided, and the signal of the indoor temperature detecting means and the signal of the outside air temperature detecting means are input to calculate the surface temperature of the indoor wall and ceiling. , A signal from the indoor humidity detecting means, a signal from the indoor temperature detecting means, and a signal from the surface temperature calculating means are input to calculate the surface humidity of the wall and the ceiling and output the result. Comparing reference humidity deriving means for calculating the surface humidity calculating means, the signal of the surface temperature calculating means and calculating the comparison reference humidity and outputting the result, and the signal of the comparison reference humidity derived by the comparison reference humidity deriving means, The humidity is adjusted by the arithmetic and control means formed by the four means of comparing the two signals of the surface humidity signals of the wall and the ceiling calculated by the surface humidity calculating means and outputting the result. You Configured and composed humidity signal output device to output a control signal to the humidity adjusting unit.

With the above configuration, the detected outdoor temperature and indoor temperature signals are input to the surface temperature calculation means formed in the arithmetic control means, the indoor wall and ceiling surface temperatures are calculated and output, and the detected indoor relative humidity and The signals of the room temperature and the surface temperature output from the surface temperature calculating means are input to the surface humidity calculating means to calculate the surface humidity of the wall and ceiling. The signal of the surface temperature calculated by the surface temperature calculating means is input to the comparison reference humidity deriving means, and the growth limit humidity of the mold is calculated and output. Two signals, the surface humidity signal output from the surface humidity calculating means and the signal output from the comparison reference humidity deriving means, are input to the humidity comparison and determination means so that the surface humidity of the walls and ceiling meets the mold growth condition. Whether or not it is determined, and a signal is output to the humidity adjusting means according to the determination result, the relative humidity is adjusted according to the outside air temperature and the indoor temperature, and the indoor is adjusted to a humidity in consideration of health without mold.

Example Hereinafter, one example of a humidity control signal output device of the present invention will be described with reference to the drawings. In FIG. 1, an indoor temperature detecting means 1 is installed indoors, detects an indoor temperature, converts an electric signal, and outputs the electric signal. The indoor relative humidity detecting means 2 is installed indoors, detects indoor relative humidity, converts it into an electric signal, and outputs it. The outside air temperature detecting means 3 is installed outdoors and detects the outside air temperature and converts it into an electric signal. The arithmetic control unit 10 inputs the above three signals and performs arithmetic operation to generate a control signal for the humidity adjusting device 5. The humidity control signal output device is configured by these portions. The calculation control means 10 is connected to the humidity adjusting device 5 for controlling the indoor humidity by outputting to the humidity adjusting device 5 such as a dehumidifier / humidifier or a ventilation fan according to the calculation result to start and stop.

The arithmetic control means 10 is composed of an electronic circuit such as an integrated circuit or a microcomputer, and as a functional block,
Surface temperature calculation means 6 for calculating the surface temperature T _S of a wall, a ceiling or the like from the output signals of the indoor temperature detection means 1 and the outside air temperature detection means 3 as input signals, and the indoor temperature detection means 1 And the signal from the indoor relative humidity detecting means 2 and the signal from the surface temperature calculating means 6 are input, the surface humidity calculating means 8 for calculating the surface relative humidity H _S of a wall, a ceiling, etc. and outputting the result, and the surface The signal from the temperature calculating means 6 is input, and the comparison reference humidity deriving means 7 for obtaining the comparison reference humidity H _c by the equation (5) described later, the signal from the surface humidity calculating means 8 and the signal from the comparison reference humidity deriving means 7 are input. The humidity comparison / determination means 9 receives the inputs, compares them, and outputs the result as a control signal of the humidity adjusting device 5.

In the above configuration, the room temperature T is detected by the room temperature detecting means 1.
_r , the indoor relative humidity detecting means 2 detects the indoor relative humidity H _r , and the outdoor air temperature detecting means 3 detects the outdoor temperature T _o , and those signals are input to the arithmetic control means 10. In the arithmetic control means 10, from these signals, the surface temperature T _S of the wall, ceiling, etc. and the wall,
The surface relative humidity H _S of the ceiling or the like is calculated, and these are compared with the temperature and humidity of the mold growth region, and the humidity adjusting device 5 is controlled by the output signal of the result.

Next, the mold growth conditions will be described.

FIG. 2 shows the temperature and humidity ranges in which mold grows. In the figure, a region a shows a wet mold and a region b shows a dry mold growth region. Curve C is a curve including the growth regions of wet mold and dry mold. According to this figure, the temperature T is T ≦ 10 ° C.
Or if the relative humidity H is H ≦ 60%,
It can be seen that mold cannot grow. Even if the temperature T or the relative humidity H exceeds this range, molds cannot grow if they are smaller than the curve C. That curve C shows the comparison reference humidity H _c determines the presence or absence of mold growth.

In actual control, the temperature T where the mold grows and the relative humidity H are determined, and the surface temperature T _S of the wall, ceiling, etc., and the surface relative humidity H _S are the dehumidifier / humidifier, ventilation fan, etc. The humidity adjusting device 5 is operated to control the surface temperature T _S of the wall, the ceiling, etc., and the surface relative humidity H _S so as to be outside the region.

The conditions under which mold growth is possible are H> H _c1 …… (1) where H _c1 = -1.8 × T + 105 (%) …… (2) and T _S ＞ 25 In the ° C region, H> H ₁ (3) where H _c1 : mold growth limit relative humidity H ₁ = 60%.

The above-mentioned conditions in which mold growth is likely to occur are arithmetic control means 10
Judges and controls the humidity adjusting device 5.

Next, the operation of the arithmetic control means 10 will be described with reference to FIG.

In FIG. 1, the surface temperature calculation means 6 includes a signal of the indoor temperature _Tr from the indoor temperature detection means 1 and an outside air temperature detection means 3
By the signal of the outdoor temperature T _o from the input (4),
The surface temperature T _S of the wall, ceiling, etc. is obtained and the result is output.

T _S = T _r + A × (T _o −T _r ) ... (4) A: Constant unit determined by the structure of the building, heat insulation performance, weather, etc. surface temperature T _S is higher when the room temperature T _r is increased, also, such as the outdoor temperature T _o is lower when lowered, the outdoor temperature T _o, is corrected and there are variations of the room temperature T _r.

The comparison reference humidity deriving means 7 receives the signal of the surface temperature calculating means 6 as an input and calculates the comparison reference humidity H _c by the following equation (5) and outputs the result.

H _c = C × (T _S −D) ² + E (5) C: constant eg C = 0.1 D: constant eg D = 29 E: constant eg E = 55 units (% RH) Equation (5) Is an expression showing the critical condition of the mold growth region, and shows a value with a little margin from the mold growth regions a and b shown in FIG. The formula (5) is shown by the solid line C in FIG.

The surface humidity calculating means 8 includes a signal of the indoor temperature T _r from the indoor temperature detecting means 1, a signal of the indoor relative temperature H _r from the indoor relative humidity detecting means 2, and a surface temperature of a wall, a ceiling or the like of the surface temperature calculating means 6. Using the signal of T _S as input, the surface relative humidity H _S of the wall, ceiling, etc. is calculated by the formula (6) shown below, and the result is output.

H _S = H _r + B (T _r −T _S ) ... (6) Here, B: 5% / ° C. The humidity comparison and determination means 9 is the signal of the comparison reference humidity derivation means 7 and the signal of the surface humidity calculation means 8. Is input, and those signals are compared and the result is output. If the signal of the surface relative humidity H _S of the wall, ceiling, etc. is larger than the signal of the comparative reference humidity H _c , the judgment condition is satisfied, and the dehumidifying operation signal is output to the humidity adjusting device 5 such as the dehumidifier / humidifier or the ventilation fan. .

As described above, according to the present embodiment, the outdoor relative humidity is low in the winter, and when the indoor / outdoor temperature difference is small, it is humidified to prevent influenza and the relative humidity is about 50-60% RH, and the outdoor temperature is If the temperature difference between indoor and outdoor becomes large and the indoor wall temperature decreases and the relative humidity rises as a result, the humidification should be stopped, and if the temperature is above the mold generation area limit, the dehumidifier should be operated. become.

Therefore, it is possible to perform air conditioning in consideration of health, such as preventing the growth of molds on the walls and ceiling of the room, preventing the generation of foul odors and asthma, and suppressing the transmission of influenza at low humidity.

Although the indoor relative humidity detecting means 2 is used as the indoor humidity detecting means in the present embodiment, the same effect can be obtained by using the indoor absolute humidity detecting means instead.

EFFECTS OF THE INVENTION As is clear from the above embodiments, the present invention detects the temperature and humidity of the room and the outdoor temperature, and outputs these signals by the surface humidity calculation means formed in the arithmetic control means. A signal that calculates and outputs the surface relative humidity of a certain indoor wall surface and the signal of the mold generation limit humidity derived by the comparison reference humidity derivation means are compared by the humidity comparison and determination means, and a control signal is output to adjust the humidity. By controlling the means and controlling the surface humidity of the walls and ceiling of the room close to outside of the mold growth area, it prevents dirt, foul odors and asthma due to mold, and also suppresses influenza transmission. Therefore, it is useful for health and hygiene, and has a great effect in practical use.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a humidity control signal output device according to an embodiment of the present invention, FIG. 2 is a diagram showing a mold growth region for temperature and humidity, and FIG. 3 is a conventional humidity control signal output. FIG. 4 is a block diagram showing the configuration of the device, and FIG. 4 is a diagram showing the relationship between the start / stop operation of the humidity adjusting device and the indoor relative humidity by the control signal output from the conventional humidity control signal output device. 1 ... Indoor temperature detecting means, 2 ... indoor relative humidity detecting means, 3 ... outside air temperature detecting means, 5 ... humidity adjusting device, 6
…… Surface temperature calculation means, 7 …… Comparison reference humidity derivation means,
8: Surface humidity calculating means, 9: Humidity comparing and judging means, 10
…… Computation control means.

Claims (1)

[Claims] 1. A room temperature detecting means, an indoor humidity detecting means, and an outside air temperature detecting means, and a signal from the indoor temperature detecting means and a signal from the outside air temperature detecting means are inputted to the surface temperature of a wall or a ceiling in the room. A surface temperature calculating means for calculating and outputting the result, a signal of the indoor humidity detecting means, a signal of the indoor temperature detecting means and a signal of the surface temperature calculating means are input, and the surface humidity of the wall and the ceiling is calculated, and the result And a comparison reference humidity derivation means for calculating the comparison reference humidity by inputting the signal of the surface temperature calculation means and outputting the result, and a signal of the comparison reference humidity derived by the comparison reference humidity derivation means. And the humidity comparison and determination means for comparing two signals of the wall and ceiling surface humidity signals calculated by the surface humidity calculating means and outputting the result. Configured and composed humidity signal output device to output a control signal to a humidity adjusting means for adjusting.