JPH0473050B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention includes a blower for blowing out temperature-controlled air, a blower for blowing out temperature-controlled air, and a blower for blowing out temperature-controlled air.
a wind direction control board that changes the blowing direction of temperature-controlled air; an electric motor that drives the wind direction control board in response to a drive signal; and a wind direction control operation switch that continuously swings the wind direction control board back and forth. The present invention relates to an operation control device for a wind direction control board of an air conditioner.

(Prior art) As a conventional device of this type, for example,
61-175437, the electric motor (grill drive device) is driven by the ON operation of the switch (blowout grill up/down switch) provided on the remote control device body, and the electric motor (grill drive device) is operated according to heating and cooling. , the wind direction control plate (outlet grille) is periodically driven up and down so that it takes a predetermined posture, such as from upward to horizontal and then downward, or from downward to horizontal and then upward. It is configured.

(Problem to be Solved by the Invention) However, in the case of the conventional example having such a configuration, the driving speed of the wind direction control plate is always constant, and if the driving speed is fast, for example, the wind direction control plate is continuously moved. There is a drawback that when you move the wind direction control board by force, you feel the wind too much and feel uncomfortable.On the other hand, if the drive speed is slow, for example, when you drive and displace the wind direction control plate to a specific position such as at the start of operation, This has the disadvantage that the displacement is slow, which makes the user feel inconvenient to use, such as irritation, and reduces the product value.

The present invention has been made in view of the above circumstances, and an object of the present invention is to improve comfort and commercial value by appropriately changing the driving speed of the wind direction control plate.

(Means for solving the problems) In order to achieve such an object, the present invention has the following features:
In the operation control device for the wind direction control board of the air conditioner described at the beginning, the speed change means 1 changes the driving speed of the electric motor 8.
8, outputs a low-speed drive signal to the speed change means 18 when the wind direction control operation switch SW is on, and outputs a low speed drive signal to the speed change means 18 when driving and displacing the wind direction control plate 7 to a specific position when the wind direction control operation switch SW is off. The driving speed control means 19 outputs a high-speed driving signal.

(Function) According to the above configuration, the wind direction can be controlled as in the case of continuously driving and displacing the wind direction control plate 7 or adjusting the position of the wind direction control plate 7 in order to equalize the temperature-controlled air. When the wind direction control board 7 is driven with the operation switch SW turned on, a low speed drive signal is output to the speed change means 18 in response to this, and the wind direction control board 7 is driven and moved at a low speed.
When driving the wind direction control plate 7 with the wind direction control operation switch SW turned off, such as when performing air conditioning operation during heating without using the The control board 7 can be driven at high speed.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings. FIG. 1 is a block diagram showing the configuration of an operation control device for a wind direction control plate of an air conditioner according to an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of the air conditioner.

In these figures, 1 is an air conditioner main body, and inside this air conditioner main body 1 is a heat exchanger 2.
and a blower 4 driven by a fan motor 3.
It sucks indoor air through a front grille 5, exchanges heat through a heat exchanger 2, and then blows out the temperature-controlled air from an outlet 6.

The air outlet 6 is provided with a wind direction control plate 7 that can freely swing up and down, and an electric motor (stepping motor) 8 is interlocked and connected to the wind direction control plate 7, and as the electric motor 8 is driven, The wind direction control plate 7 is driven to move back and forth, thereby changing the blowing direction of temperature-controlled air.

The drive motor 8 is driven by a drive signal output from the CPU 9 to a motor driver 10.

In FIG. 1, reference numeral 11 denotes a power system load such as a compressor, which is driven by the output of a drive signal from the CPU 9 to a relay driver 12.

Further, 13 is a display section using a light emitting diode, and a light emitting diode driver 14 is connected from the CPU 9.
It is designed to be driven by outputting a drive signal to.

An oscillator 15 is connected to the CPU 9, and is configured to input a basic cycle clock. Also,
The CPU 9 includes an external setting unit 16 that sets reference constants, method selection, etc., a wind direction control operation switch SW that continuously swings the wind direction control plate 7 back and forth, an air conditioner operation switch, and an operation mode switch. A remote control device 17 including a switch, a temperature setting switch, etc. is connected.

The CPU 9 is equipped with a speed change means 18 and a drive speed control means 19.

The electric motor 8 is configured in a four-phase energization system,
Excitation coil 8a arranged at 90 degrees relative positions...
is configured to be energized by a voltage with a predetermined period generated by the oscillator 15 as shown in the voltage waveform diagram of FIG. 3, and whose unit period is
By changing _T0 , a low-speed drive signal with a long unit period _T0 and a high-speed drive signal with a short unit period _T0 are output, and the drive speed of the electric motor 8 is changed between a low-speed drive state and a high-speed drive state. The speed change means 18 is configured as follows.

The drive speed control means 19 outputs a low speed drive signal to the speed change means 18 when the wind direction control operation switch SW is turned on, and also outputs a low speed drive signal to the speed change means 18 when the wind direction control operation switch SW is turned on.
When the wind direction control plate 7 is driven to a specific position with the SW turned off, a high speed drive signal is output to the speed change means 18.

A drive shaft (not shown) protruding from the transmission case 20 is connected to the wind direction control plate 7 so as to be able to rotate integrally therewith, and, although not shown, the motor shaft and the drive shaft of the electric motor 8 are connected to each other by a worm gear type. It is interlocked and connected via a known speed reduction mechanism such as the above, and a known friction type transmission mechanism in which friction plates are pressed together.
Further, magnetic elements are attached to the motor shaft of the electric motor 8 at three locations spaced apart from each other by a predetermined distance in the circumferential direction, and a Hall element is attached around the motor shaft.
The rotation speed of the motor shaft is configured to be detected by measuring the number of pulses.

When the wind direction control plate 7 is driven and displaced using these configurations, if it is displaced upward, it should be moved from the position where it abuts the upper opening edge 6a of the air outlet 6 (hereinafter referred to as the fully open position). It outputs a drive output with a sufficient number of pulses to displace the air outlet upward, and on the other hand, when it displaces downward, it is displaced downward from the position where it abuts the lower edge 6b of the opening of the air outlet 6 (hereinafter referred to as the fully closed position). The wind direction control plate 7 is reliably displaced to the fully open position and the fully closed position while avoiding seizure of the electric motor 8 due to slippage via the friction transmission mechanism. , so that they can be maintained at their respective positions by abutment.

Next, the drive speed control means 19 described above is provided.
The control operation of the CPU 9 will be explained using the flowchart shown in FIG. 4 and the operation explanatory diagram shown in FIG. 5, respectively.

First, when the power is turned on or when the operation switch is turned off, a high-speed drive signal is output to the transmission means 18 (S1), and as shown in FIG. Closed position 6b
side (S2) and its fully closed position 6.
b. At this time, the wind direction control plate 7 is moved from the fully open position 6a to the fully closed position 6 with respect to the electric motor 8.
A drive output with a number of pulses sufficient to displace the angle θ + α, which is larger than the angle θ required to displace the motor to point b by the set angle α, is output, and this drive output is waited for (S3), and then the operation switch is turned on. Determine whether it has entered (S4).

When the operation switch is turned on here, a high-speed drive signal is output to the transmission means 18 (S5), and the angle range θ ₀ (hereinafter referred to as normal While the wind direction control plate 7 is displaced to within the angle θ ₀ , it is in the fully closed position 6a.
Drive displacement to the side at high speed (S6, S7).

When the wind direction control plate 7 exists within the above-mentioned normal angle θ ₀ , a wind blowing drive signal is output to the fan motor 3, and the fan motor 3 is activated in response to the wind blowing drive signal.
When the fan motor 3 is driven and the wind direction control plate 7 exists outside the normal angle θ ₀ , the output of the fan drive signal is stopped and the drive of the fan motor 3 is stopped to avoid an increase in internal pressure.

After the displacement to the normal angle θ ₀ , it is determined whether the wind direction control operation switch SW is turned on (S8),
When the wind direction control operation switch SW is not turned on, the wind direction control plate 7 is driven and displaced in the high speed driving state, as shown in FIG. 5b. On the other hand, when the wind direction control operation switch SW is turned on, the fifth As shown in FIG.
Shift to S10 and switch on the wind direction control operation switch on the way.
It is determined whether the SW is turned off (S10), and as the switch is turned off, the drive of the electric motor 8 is stopped at that position (S11) and the process returns to step S8. That is,
When adjusting the fixed position of the wind direction control board 7,
As shown in Figure e, the wind direction control plate 7 can be easily stopped at a desired cutting operation position ST while being driven at a low speed. Note that the normal angle θ ₀
When a cutting operation is performed with the wind direction control plate 7 existing outside, the winding will normally stop at a position displaced to an angle θ ₀ , as shown in Fig. 5d, regardless of the cutting operation position ST. ing.

In step S10, the wind direction control operation switch
If the SW is not operated in the ON state, that is, if it is maintained in the OFF state or ON state, respectively, in the OFF state, the speed is high as shown in FIG. 5b, while in the ON state, the 5th As shown in FIG. c, the wind direction control plate 7 is driven and displaced to the fully open position 6a by outputting an extra drive pulse by the set angle -α at low speed (S12).

After that, if the wind direction control operation switch SW is turned off in the heating operation state, step S13 is performed.
Then, the process moves to step S14, where the drive of the wind direction control plate 7 is stopped, and the air direction control plate 7 is stopped and maintained at the fully open position 6a for a set time, as shown by the two-dot chain line in FIG. 5b (S15, S16, S17).

After that, or when the air conditioner is operating or the wind direction control operation switch SW is turned on, the process moves to step S18, and it is determined whether the air direction control operation switch SW is turned on even in the cooling operation state.
If the wind direction control operation switch SW is turned on, a low speed drive signal is output to the speed change means 18 (S19), and the fifth
As _shown in FIG _. It is designed to move continuously up and down (S20, S21, S22, S23).

When it is determined in step S18 that the wind direction control operation switch SW is not turned on, a high-speed drive signal is output to the transmission means 18 (S24), and as shown in FIG. Drive displacement up to θm) (S25, S26).

After being displaced to the first specific position, it is determined whether or not the heating operation is in progress (S27). If the heating operation is in the heating operation, the vehicle moves past the first specific position and moves to the second specific position (here, the normal angle θ ₀ and (S28) and then stop (S29) until the set time (for example, 5 minutes) has elapsed or the set temperature is reached (S28). S30, S31, S32).

After the set time has elapsed or the installation temperature has been reached, reset the timer (S33),
It is moved to the fully open position 6a side (S34), and as shown in FIG. 5b, it is displaced to the first specific position (S35) and then stopped (S36).

In the cooling operation state, the process moves from step S27 to step S36, and as shown by the solid line in FIG. Stop at this state and return to step S8. The above-mentioned first specific position is normally set at a position parallel to the blowing direction of the temperature-controlled air and does not create resistance to the blowing of the temperature-controlled air. However, the above-mentioned artificial cutting operation Therefore, after the wind direction control plate 7 is stopped at a desired position, the stopped position is memorized and the first
It becomes a specific position.

When the wind direction control board 7 is in the state where the operation switch is turned on,
In addition, when the wind direction control operation switch SW is turned on and operated while the angle is within the normal angle θ ₀ , the fifth
As shown in FIG.
Step S13 and step S18 move to step S23, and after once moving to the fully open position 6a, the first angle θ ₁ and the second angle θ are determined based on the fully open position 6a.
Fully closed position 6b and fully open position 6a within the range of angle θ ₂
The wind direction control plate 7 is automatically moved up and down at low speed and continuously by being alternately displaced from side to side.

In the above embodiment, a stepping motor is used as the electric motor 8, and the changing means 18 changes the driving speed of the electric motor 8 between a low speed driving state and a high speed driving state by changing its unit period _T0 . However, in the present invention, for example, a mechanical speed change mechanism is interposed between the electric motor 8 and the wind direction control plate 7, and the drive speed is changed by changing the speed of the speed change mechanism. It may also be configured as follows.

(Effects of the Invention) As described above, according to the present invention, since the wind direction control plate 7 is continuously driven and displaced at low speed in order to equalize the temperature-controlled air, the wind does not make the user feel uncomfortable. temperature-controlled air can be blown out, and
Even when adjusting the position of the wind direction control plate 7 in order to change the blowing direction of temperature-controlled air,
Since the wind direction control plate 7 is driven and displaced at a low speed, it can be easily and reliably adjusted to a desired position while confirming the position without accidentally going too far, and comfort can be improved in both cases.

Furthermore, when performing air conditioning operations such as heating without using the wind direction control plate 7, the wind direction control plate 7 can be driven to a specific position at high speed, making it easier to use and improving product value.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an operation control device for a wind direction control plate of an air conditioner according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the air conditioner, and FIG.
The voltage waveform diagram for electric motor drive, Figure 4, is
FIG. 5, which is a flowchart explaining the control operation of the CPU, is an explanatory diagram of the displacement operation of the wind direction control plate. 4... Air blower, 6... Air outlet, 7... Wind direction control board, 8... Electric motor, 18... Speed change means,
19... Drive speed control means, SW... Wind direction control operation switch.

Claims (1)

[Scope of Claims] 1. A blower 4 that blows out temperature-controlled air; a wind direction control board 7 that is vertically swingably provided at the temperature-controlled air outlet 6 and that changes the blowing direction of the temperature-controlled air; and a drive signal. Operation of a wind direction control board of an air conditioner equipped with an electric motor 8 that drives the wind direction control board 7 in response to The control device includes a speed change means 18 for changing the drive speed of the electric motor 8, and outputs a low speed drive signal to the speed change means 18 when the wind direction control operation switch SW is on, and outputs a low speed drive signal to the speed change means 18 when the wind direction control operation switch SW is turned on. An operation control device for a wind direction control plate of an air conditioner, comprising a drive speed control means 19 that outputs a high-speed drive signal to the speed change means 18 when driving and displacing the wind direction control plate 7 to a specific position when the SW is off. .