JPS6149574B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an indoor environment control device for an air conditioner, which attempts to provide a comfortable indoor environment by detecting indoor radiant temperature and changing the room temperature and blowing direction. be.

Most conventional air conditioners detect the indoor temperature and control the air conditioning capacity, that is, control the room temperature to be constant regardless of the height of the indoor radiant temperature. The radiant temperature is determined by the surface temperature of walls, floors, ceilings, etc., but it changes depending on many factors such as the temperature difference between indoors and outdoors, solar radiation, and indoor temperature distribution. Furthermore, the temperature felt by the human body is affected not only by indoor temperature but also by radiation, wind speed, humidity, etc. Therefore, simply keeping the indoor temperature constant as in the past is not enough to provide comfortable control.
You will feel hot when the indoor radiation temperature is high, such as when there is strong sunlight during the day, and you will feel cold when the room is heated at night. In order to overcome these drawbacks, some air conditioners have conventionally been equipped with indoor radiant temperature detectors and controlled in consideration of the radiant temperature. However, as mentioned above, the indoor radiant temperature Since the temperature is determined by the average radiant temperature of all six surfaces such as the floor and ceiling, conventional single radiation detectors use a portion of the entire room as a representative temperature to determine the indoor average radiant temperature. Therefore, for example, if the temperature of a part of the ceiling or wall rises extremely due to solar radiation, when the radiant temperature of that part is detected, it will be detected at a higher temperature than the actual average radiant temperature, and the room temperature will be set to the optimum temperature. Control is performed to lower the temperature even further. On the other hand, if a location is detected that is lower than the actual average radiant temperature, the room temperature will be higher than the optimal temperature and it will become hot. When heating and cooling are performed in addition to solar radiation, the actual average radiant temperature cannot be detected even if the temperature distribution in the room can be distributed to the surface temperatures of six surfaces in the room. Furthermore, in order to solve this problem, even if it were possible to detect the average radiant temperature using multiple indoor radiant temperature detectors and control the indoor temperature to correct it to the optimal temperature, the difference between surfaces with strong radiation and surfaces with weak radiation As a result, there is a temperature difference on the body surface and a temperature distribution is felt.

As mentioned above, in the case of conventional air conditioners that detect radiant temperature, when there is a radiant temperature distribution, since there is only a single radiant detector, it is not only impossible to perform control corresponding to the indoor average radiant temperature. Even if the room temperature was uniform, there were problems such as the feeling of temperature distribution.

The present invention solves the above-mentioned drawbacks of the conventional apparatus by providing a plurality of radiation detectors at different angles and controlling the room temperature and the blowing angle. Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 7.

1 is a main body containing a heat exchanger 2, a blower 3, etc.;
There is an air inlet 4 at the upper front of the main body 1 and an air outlet 5 at the lower front of the main body 1. Inside the air outlet 5, a wind direction changing device 6 is installed which blows the air in different directions up and down. 7 is an upper radiant temperature detector that detects the radiant temperature in the upper part of the room, and 8 is a lower radiant temperature detector that detects the radiant temperature in the lower part of the room. The wind direction changing device 6 is composed of iron blades 9, an electromagnet A10 that directs the blades 9 upward to blow the wind upward, an electromagnet B11 that changes the wind direction downward, and a spring 12 that supports the blades.

In the above configuration, the operation of the control means will be explained next. In particular, the explanation will focus on operation during cooling. First, to explain the room temperature control operation, the average radiant temperature calculation circuit 13 calculates the average radiant temperature of the radiant temperatures detected by the upper and lower radiant temperature detectors 7 and 8, and sends the signal to the room temperature comparison circuit 14. As for the room temperature, a signal detected by the room temperature detector 15 is sent to the room temperature comparison circuit 14 and compared with the radiant temperature. In the room temperature comparison circuit 14, a signal of (room temperature)-(average radiant temperature) is sent to a set temperature correction circuit 16, which is temperature correction means. The setter temperature correction circuit 16 corrects the set value of the room temperature setter 17 by multiplying the signal sent from the room temperature comparison circuit 14 by a certain coefficient K and subtracts it.
8 controls the compressor 19.

(Corrected temperature) = (Set temperature) - K {(Average radiant temperature) - (Room temperature)} The constant k gives a value that makes the set temperature close to the sensible temperature.

Therefore, the graph shown in Figure 4 (in this case, the set temperature = room temperature) is 2.
0 is the set temperature, 21 is the average radiant temperature, and 22 is the corrected value. When the average radiant temperature is low, the corrected value becomes high, and when the average radiant temperature is high, the corrected value becomes low. Generally, during cooling, the average radiant temperature is higher than the room temperature, so the corrected value is lower than the set value, and the set value is corrected to be lowered by the temperature that makes you feel hot due to radiation. In other words, the sensible temperature due to radiation and room temperature approaches the set value.

Next, the control operation will be explained using FIGS. 5 to 7.

23 is a radiant temperature comparison circuit that is a determining means for determining the detection angle and the level of radiant temperature from the upper and lower radiant temperature detectors 7 and 8; 24 is an operating circuit that is an actuating means for driving the blades 9 of the wind direction changing device 6; It is. The radiation temperature comparison circuit 23 calculates (upper radiation temperature) - (lower radiation temperature), and if the difference is positive, the comparator 25 selects the transistor 26 in the operation circuit 24.
An operation signal is sent to energize the electromagnet A10, and when the voltage is negative, an operation signal is sent from the comparator 26 to the transistor 27, and the electromagnet B11 is energized. That is, when the indoor upper radiant temperature becomes higher than the lower radiant temperature, the electromagnet A10 is energized, the blades 9 are attracted, and the cool air is blown out in the upper direction of the indoor room to cool the ceiling and upper wall surfaces of the indoor ceiling. Conversely, when the indoor upper radiant temperature becomes lower than the lower radiant temperature, the electromagnet B11 is energized, the blades 9 are attracted to the electromagnet B11, and the cool air is blown out toward the lower part of the room, cooling the lower walls and floor of the room.

Therefore, the blowing direction of the cold air is directed toward the side with higher radiation temperature, so that the indoor radiation distribution, that is, the temperature difference between the six sides of the room, decreases.

As is clear from the above description, the air conditioner of the present invention can accurately detect the average radiant temperature by providing a plurality of radiant temperature detectors, and therefore can perform temperature control more responsive to the sensible temperature. In addition, since the wind direction can be controlled to blow cool air in the direction of higher radiant temperature, the indoor radiation distribution is reduced, resulting in an indoor environment with a less perceptible temperature distribution, and comfortable air conditioning is possible.

In the embodiment, explanation was given for cooling, but the same control can be used also for heating. However, in that case, when controlling the wind direction, during cooling, the electromagnet A10 is energized when (upper radiant temperature) - (lower radiant temperature) is positive, but during heating, the electromagnet B11 is energized, and the negative In this case, the electromagnet A10 is energized.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the air conditioner of the present invention, FIG. 2 is a side sectional view of the air conditioner, and FIG. 3 is a block diagram of indoor control of the control means of the air conditioner. FIG. 4 is a characteristic diagram showing temperature changes in the room temperature control of the air conditioner, FIG. 5 is a block diagram of the wind direction control of the control means of the air conditioner,
FIG. 6 is a partial explanatory diagram of the wind direction changing device of the air conditioner, and FIG. 7 is a specific circuit diagram of the wind direction control of the air conditioner. 1...Air conditioner main body, 6...Wind direction change device,
7, 8...Radiation detector, 9...Blade, 13...Average radiant temperature calculation circuit, 14...Room temperature comparison circuit, 15...Room temperature detector, 16...Temperature correction circuit, 17...Room temperature setter, 23...Radiation temperature comparison circuit .

Claims (1)

[Claims] 1. A room temperature detector that detects the indoor temperature, a temperature setting device that sets the indoor temperature to a desired temperature, a wind direction change device that changes the direction of the blown air, and multiple detectors that detect the indoor radiant temperature. radiant temperature detectors provided separately, temperature correction means for correcting the set temperature of the temperature setting device according to the detected temperature of the radiant temperature detector, and a detection angle and the height of radiation from the radiant temperature detector. and an actuating means for operating the wind direction of the airflow direction changing device in the direction of high radiant temperature during cooling and in the direction of low radiant temperature during heating according to the judgment result of the judgment means. harmonization device.