JPS601539B2 - Blowout angle changing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a blowout angle changing device for an air conditioner, and an object of the present invention is to improve comfort by changing the period when changing the blowout angle periodically.

Conventional devices that periodically change the blowing angle have the following drawbacks because the period is constant.

As shown in FIG. 7, during heating, the wall-shaped air conditioner 1 is operated at a strong air volume, and by periodically changing the blow-out angle of the blow-off port from direction A to direction B, air is blown out from the blow-off port. If the conditioned air moves periodically within the shaded area of room 2, the average room temperature in the shaded area of room 2 changes as shown by the opening line with respect to the indoor set temperature shown by line A in Figure 8. do. In other words, when the blowout angle is in the direction A, the conditioned air flows directly into the shaded area and raises the room temperature, but when the blowout angle is in the B direction, it mainly warms the area near the ceiling, so the room temperature in the shaded area decreases. do. By periodically changing the blowout angle in this way, the room temperature fluctuates to a certain extent, but when the air conditioner 1 is operated with a high air volume, the blowout temperature of the conditioned air that is blown out also changes. Since the air flow rate is low and the air volume is large, the distance that the conditioned air reaches indoors is long, and the fluctuations in the room temperature are not so large. However, air conditioners are often used in low volume operation due to noise issues, etc., and if the user now changes the air conditioner 1 from high volume operation to low volume operation, the air volume will decrease. Since the blowing temperature also rises, the reaching distance becomes shorter. As a result, the room temperature in the shaded area of the room 2 changes as shown by the C line, which has the same period but an increased amplitude compared to during strong operation. That is, during low air volume operation, when the blowout angle is in direction A, the conditioned air flows into the shaded area at a higher temperature than during high air volume operation, so the average temperature within the shaded area increases, and The upper limit peaks as shown in , but in direction B, the high-temperature conditioned air whose reaching distance is reduced warms only the area near the ceiling, and the rate of loss from the ceiling becomes larger than when operating with high air volume. As a result, the average temperature in the area indicated by the diagonal line in Tokyo falls and reaches the lower limit peak as shown by the line C.

As a result, the room temperature fluctuates more during low air flow operation than during high air flow operation, causing discomfort to the occupants.

The present invention solves the above-mentioned conventional drawbacks by changing the period of change of the blowing angle.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. In Figures 1 to 3, reference numeral 1 denotes a wall-shaped air conditioner main body, the air outlet 3 of which is provided with blades 4, and the central axis 5 of which is connected to the shaft 7 of a step motor 6 serving as a drive unit. .

The shaft 7 has cams 8, 8' having protrusions 9, 9' in some parts.
are fixed, and when the protrusions 9, 9' rotate due to the rotation of the step motor 6, the microswitches 10, 10
' contacts 11, 11' (not shown) to reverse the rotational direction of the step motor. Therefore, the blade 4
rotates, and the blowing angle moves periodically from direction A to direction B. Further, the rotational speed of the step motor 6 is determined by a voltage comparator 14 serving as a signal comparator for each signal from the indoor temperature setting device 12 and the sensor 3 for detecting the outlet temperature, as shown in FIG.
It is controlled by being transmitted to the transistor 5 as a controller that changes the change period of the blowing angle. At this time, the relationship between the voltage Vi across the voltage comparator 14 and the current Soc flowing from the transistor 15 is as shown in FIG.
Speed control is performed in proportion to the difference between the sensor 2 and the sensor 3 that detects the blowout temperature. Therefore, the cycle of the air outlet angle changes in proportion to the difference between the indoor set temperature and the air outlet temperature.The effect of this will be explained with reference to FIGS. 6 and 7. When 1 is operated at a strong air volume and the above-mentioned blowing angle is changed periodically from direction A to direction B, as mentioned above, the average room temperature in the shaded area of room 2 is the indoor setting shown by the double line. It changes linearly with temperature. If the user changes the air conditioner 1 to low airflow operation, the blowout temperature increases, the difference between the blowout temperature and the indoor set temperature increases, and the cycle of the blowout angle becomes faster. As a result, the time that the blowout angle stays near the direction A or the direction B becomes shorter, so the average room temperature in the shaded area of room 2 has a faster cycle but with the same amplitude as the line E above. It will change like a line. Therefore, the user can enjoy an air-conditioned state close to the room temperature setting, just as in the case of high air volume operation. As is clear from the above explanation, according to the blowout angle changing device of the present invention, when the blowout angle is changed periodically, the cycle is changed according to the blowout temperature, thereby achieving a comfortable air conditioning effect. be.

[Brief explanation of drawings]

FIG. 1 is an external view showing an embodiment of the blow-off angle changing device of the present invention, FIGS. 2 and 3 are side and front views of the motor rotation part of the blow-off angle changing device, respectively, and FIG. 4 is a A schematic circuit diagram of the motor controller, and FIG. 5 is a diagram of the relationship between the voltage across the voltage comparator of the controller and the current flowing through the motor controller.
Fig. 6 is a time-temperature relationship diagram showing the effects of the present invention;
The figure is a schematic sectional view showing the direction of the wind inside the room, and FIG. 8 is a diagram showing the relationship between time and room temperature according to a conventional example. 1... Air conditioner main body, 3... Air outlet, 4... Vane,
6...Step motor as a drive unit, 12...Indoor temperature setting device, 13...Sensor for detecting outlet temperature,
14... Voltage comparator as a comparator, 15... Transistor as a controller. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

[Claims] 1. A sensor that detects the outlet temperature of an air conditioner, an indoor temperature setting device that sets the indoor temperature, and a comparator that compares the outputs from the sensor and the indoor temperature setting device and outputs a difference signal. A blow-off angle changing device comprising: a controller that changes the blow-off angle changing cycle according to the output from the comparator; and a drive section that periodically changes the blow-off angle according to the output from the controller. 2. The controller is configured to lengthen the change period of the blowing angle when the difference signal from the comparator is small, and shorten the change period when the difference signal is large.
The blowout angle changing device described in Section 1.