JPH02126043A - Air direction control method for air conditioner - Google Patents

Abstract

PURPOSE:To adjust a blade in a given set position and to control air in a given direction by a method wherein when a blade position detected by a variable resistor coincides with data of an air direction, a rotation drive mechanism is stopped, and the position of a blade is always detected accurately. CONSTITUTION:When a blade drive control circuit 7 receives air direction data of set switches 6a-6d, a signal from an A/D converter 8 is inputted so as to detect a present blade position. At the same time when a relay 5 is turned ON so that the blade is adjusted in a set position and an electric motor is run, a signal from an A/D converter 8 is always inputted to provide a state that a blade position is always detected. Since, when the blade position is adjusted to a set position, the resistance value of a variable resistor 4 is changed according to rotation of a cam, a signal from the A/D converter 8 produces a set position. The blade drive control circuit 7 detects the set position, the relay 5 is turned OFF to stop running of the electric motor, and the blade can be always stopped in a position. As a result, an air direction can always match the state of an air direction switch.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF THE INVENTION The present invention relates to wind direction control of an air conditioner, and particularly to a control method for stopping the wind direction at a predetermined position.

BACKGROUND OF THE INVENTION FIG. 4 shows a groove for controlling the wind direction of a conventional air conditioner. 1 is a blade that changes the wind direction, and 2 is a rotational drive mechanism that drives the blade 1. Reference numeral 2 denotes a blade driving electric motor for driving the blade 1. 3 is a cam that transmits 20 rotations of the electric motor to the blade 1. Reference numeral 4 denotes a position detection switch provided to detect the position of the blade 2. FIG. 6 shows the control circuit of FIG.
6 is a remote control that sets the wind direction position, and θa to 6d are switches that set the wind direction. 7 is a position detection switch 4 and a remote control 6
By setting the wind direction position from the remote controller 6, the relay 5
This is the drive control circuit that controls the blades. A power source E is connected to the motor 2 and the relay 6, and is also connected to the blade drive control circuit 7 to supply power.

Next, the operation will be explained. When setting the wind direction to a certain direction, use the wind direction setting switches 6a to 6 on the remote control θ.
d to set a predetermined wind direction.

The wind direction data is then transmitted to the blade drive control circuit T. After receiving the wind direction data, the blade drive control circuit 7 turns on the relay 5 to rotate the electric motor 2, and when the position detection switch 4 turns on, turns off the relay 6 to stop the rotation. Next, the bone was to calculate the energization time of the electric motor 2 from the obtained wind direction data, and set the blade 1 to a predetermined position by rotating the electric motor 2 for the calculated time.

Problems to be Solved by the Invention Conventional air conditioner wind direction control devices are configured as shown below.When setting the blades to a predetermined position, the reference position is determined using a position detection switch. The subsequent setting to a predetermined position is calculated based on the predetermined rotation time and blade position data, and is set by rotating for the calculated time, so the current position of the blade can be accurately determined. The problem is that if the cam idles during rotation for a certain amount of time, it will not be possible to accurately set the cam to a predetermined position. There is a problem that the current position of the blade cannot be detected when manually moving the blade.
Accurate control and detection of wind direction was not always possible.

The purpose of the present invention is to eliminate the above-mentioned problems, and by constantly and accurately detecting the position of one blade, it is an object of the present invention to install the blade at a predetermined setting position and to obtain a predetermined wind direction.

Means for Solving the Problems The present invention provides a blade that determines the wind direction, a rotary drive mechanism that drives the blade, and a variable resistor that changes the resistance value in proportion to the rotation of the rotary drive mechanism. When stopping at a predetermined position, operate the wind direction setting switch on the remote control and send data corresponding to the wind direction to the indoor unit.
The blade position detected by the variable resistor is the current wind direction,
The rotary drive mechanism is operated from this position so that the wind direction data is obtained, and when the blade position detected by the variable resistor begins to match the wind direction data, the rotary drive groove is stopped and the wind direction is set at a predetermined position. It controls the

Effect: According to this configuration, the position of the blade can be detected at all times, so
Unlike conventional systems, once the reference position is detected, the set position is not determined based solely on the rotation time, making it possible to accurately determine the position of the blade, and the wind direction is always controlled to the optimal position. It is. -! In addition, since the exact position of the blade can be detected, even if the blade is moved manually,
Its position can be detected accurately.

Example Embodiments of the air conditioner of the present invention will be described below.

A wind direction i'Ui control mechanism of an air conditioner according to an embodiment of the present invention is shown in FIG. The symbols 1, 2A, 2, and 3 and their mechanisms are completely the same as those of the conventional device, and a variable resistor 4 for position detection is installed on the shaft of the cam 3. FIG. 2 is a control circuit diagram of the air conditioner of the present invention. Each code 2, 6-7
．． E is exactly the same as the conventional device. Reference numeral 8 denotes an analog/digital converter (hereinafter referred to as an A/D converter) that converts the resistance value of the variable resistor 4 into a digital signal.

The remote control 6 and the A/D converter 8 are connected to the blade and the drive control circuit 7.

Next, the present invention will be explained in detail based on the flowchart of FIG.

First, it is assumed that the power supply E is turned on and power is applied to the air conditioner. Then, one of the wind direction setting switches 6a to 6d on the remote controller 6 is pressed for the desired wind direction position. Now, suppose that eb is pressed, and the blade position can be set at an angle of 30 degrees from the horizontal direction (step 1). Next, the remote controller 6 transmits the data of the wind direction setting switches 6a to 6d to the blade drive control circuit 7 (step 2).

When the blade drive control circuit 7 receives the wind direction data, it inputs a signal from the A/D converter 8 to detect the current blade position (step 3). Now assume that the signal from the A/D converter 8 indicates that the blade position is in the horizontal direction. Therefore, the blade drive control circuit 7 turns on the relay 6 and rotates the motor 2 so that the blade 1 faces 300 degrees downward (step 4), and at the same time always inputs the signal from the A/D converter 8. The position will be constantly detected. Next, when the position of the blade 1 becomes 300° downward, the resistance value of the variable resistor 4 changes due to the rotation of the cam 3, so that the signal from the A/'D converter 8 becomes 300° downward (step 6). Then.

When the blade drive control circuit 7 detects that the blade is tilted downward by 30 degrees, the relay 5 is turned off to stop the motor from rotating 20 times (step 6). Thereby, the blade 1 can be accurately stopped at a predetermined position at all times, so that the wind direction can be accurately adjusted to the state of the wind direction position switch.

Incidentally, the blade drive control circuit 7 counts the energization time of the electric motor 2, and sets the time until the predetermined angle is reached in advance, and even though the predetermined time has elapsed, the value of the A/D converter 8 remains unchanged. If it does not reach a predetermined value, it is possible to detect an abnormality in the rotary drive mechanism 2A or converter 8 (A/1).

Effects of the Invention According to the present invention, the blade position can be accurately set to match the wind direction set by the remote control, so the optimal wind direction is always achieved. Furthermore, since the blade position can be detected at all times, abnormalities in the rotational drive mechanism, such as idle rotation of the cam, can be quickly detected. Furthermore, even if the position of the blade is changed manually, the position can be detected, so that the manually set wind direction can be displayed on the remote control.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing the wind direction control mechanism of an embodiment of the air conditioner of the present invention, FIG. 2 is an electric circuit diagram of the wind direction control mechanism of FIG. 1, and FIG. FIG. 4 is a sectional view showing the wind direction control mechanism of a conventional air conditioner, and FIG. 6 is an electric circuit diagram of FIG. 4. 1...Blade, 2a... Rotation drive mechanism,
4...Variable resistor, 6...Remote control,
6a to 6d... Wind direction setting switch. Name of agent: Patent attorney Shigetaka Awano and 1 other person! Lunar root chart chart

Claims (1)

[Claims] An indoor unit including a blade at a wind outlet of an air conditioner for controlling the direction of the blowing air, a rotary drive mechanism for driving the blade, and a variable resistor for changing the resistance value by the rotational operation of the rotary drive mechanism. , and a remote control equipped with a wind direction setting switch.If you want to stop the wind direction at a predetermined position, operate the wind direction setting switch on the remote control and send data corresponding to the wind direction to the indoor unit. Set the position as the current wind direction, operate the rotational drive mechanism so that the wind direction data is obtained from this position, and stop the rotational drive mechanism when the blade position detected by the variable resistor matches the wind direction data, A method for controlling the wind direction of an air conditioner, characterized by controlling the wind direction at a predetermined position.