JPH01179857A - Air flow delivery angle regulating device for air conditioner - Google Patents

Abstract

PURPOSE:To accurately control the air flow delivery angle regulating vane to the set inclination by reducing the deviation of inclination of the vane due to the reversal rotation time interval of a rotary motor upon startup. CONSTITUTION:When the air flow delivery angle is to be changed, a rotary motor 15 is fist rotated in the reverse direction for a very short time interval by being controlled its startup by a startup control means 30, and then, is rotated in the forward direction to change the inclination of an air flow delivery angle regulating vane 10. That is, when a rotational position sensing means 22 detects the reference rotational position of the rotary motor 15 while the rotary motor 15 is being rotated, the time counting is started for the first time at the reference rotational position of the rotary motor 15. The operation of the rotary motor 15 is stopped by an operation control means 31 at the moment when a time interval corresponding to the set inclination of the air flow delivery angle regulating vane 10 is past. Because of this, in spite of the reverse rotation of the rotary motor 15 at the time of a startup, the inclination of the air flow delivery angle regulating vane 10 can be accurately positioned at the set angle.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to an improvement in a wind direction changing device that changes the direction of hot or cold air blown out of an air outlet of an air conditioner, and particularly to improving the control accuracy of the wind direction. Regarding improvement measures.

(Prior Art) Conventionally, as a wind direction changing device for this type of air conditioner, as disclosed in, for example, Japanese Utility Model Application Publication No. 60-178742, a wind direction changing blade is rotatably arranged at a wind outlet.
A rotary motor is connected to one end of the shaft of this wind direction changing blade,
It is known that when changing the wind direction, the rotary motor appropriately changes the inclination angle of the wind direction changing blade to change the direction of the wind blown out from the wind outlet.

(Problem to be Solved by the Invention) By the way, when controlling the inclination angle of the wind direction changing blade in multiple stages (for example, 3 stages or 4 stages) using a rotary motor, if there is a deviation in the inclination angle at each stage, it is necessary to change the direction of the wind. Since the direction of the wind deviates greatly from the intended direction, it is desirable to control the angle of inclination with high precision.

However, when the rotary motor is configured with a geared motor, due to its characteristics, this geared motor rotates in the opposite direction for a very short time (0.000, several seconds) when it is started, and then rotates in the forward direction to correct the wind direction changing blade. Due to the nature of the drive in the direction, in the case of a type that changes the inclination angle by setting in advance the driving time of the rotary motor until the wind direction changing blade reaches the required inclination angle based on the time when the rotary motor starts, the inclination angle is changed. There was a drawback in that the inclination angle of the wind direction changing vane was scratched by the inclination angle corresponding to the reverse rotation time of the motor, reducing the control accuracy. This also applies to geared motors that are equipped with claws to prevent reverse rotation.In this type of motor, the rotation is reversed by the amount of play, and there is variation in this play, so please take care of this variation in advance. If the motor drive time from motor startup to the required inclination angle is set to a large value in anticipation of this, a large deviation will occur in the inclination angle by the amount of time corresponding to the variation in play.

The present invention has been made in view of the above points, and its purpose is to set a reference rotation position in advance in a rotary motor (geared motor), and when changing the inclination angle of the wind direction changing blade (
When changing the wind direction), after the geared motor starts, its reference rotational position is detected, and this reference rotational position is used as the reference for setting the motor drive time, and the wind direction changing blade is controlled to the required inclination angle. To precisely control a wind direction changing blade to a required inclination angle by reducing the deviation in the inclination angle caused by the reverse rotation time at the time of starting a geared motor.

(Means for solving the problem) In order to achieve the above object, the solving means of the present invention is as follows.
As shown in the figure, the inclination angle of the wind direction changing blade (10) arranged at the wind outlet (7a) is changed in multiple stages by a rotary motor (15) consisting of a geared motor, and air is blown from the wind outlet (7a). The target is a wind direction changing device for an air conditioner that changes the wind direction. and,
A rotational position detection means (22) for detecting the reference rotational position of the rotary motor (15), and a start control means (30) for starting the rotary motor (15) when the inclination angle of the wind direction changing blade (]0) is changed. Then, during the operation of the rotary motor (15) by the start control means (30), time measurement is started from the point in time when the reference rotational position of the rotary motor (15) is detected by the rotational position detection means (22). stop control means (31) for stopping the operation of the rotary motor (15) when a time period corresponding to the required inclination angle of the wind direction changing blade (10) has elapsed;
This is a configuration in which the following is provided.

(Function) With the following configuration, in the present invention, when changing the wind direction,
The rotary motor (geared motor) (15) is started and controlled by the start control means (30), rotates in the opposite direction for a short period of time, and then rotates in the forward direction to change the inclination angle of the wind direction changing blade (10). . Then, while the rotary motor (15) is in operation, the rotational position detection means (22) detects that the rotary motor (15) is in operation.
When the reference rotation position of 5) is detected, this rotation motor (1
5) Time measurement starts for the first time at the reference rotation position,
When a time corresponding to the required inclination angle of the wind direction changing blade (10) has elapsed, the operation of the rotary motor (15) is controlled to be stopped by the stop control means (31). the result,
The inclination angle of the wind direction changing blade (10) is changed to the required inclination angle, and the direction of the wind blown out from the wind outlet (7a) is changed.

At that time, due to its characteristics, the rotary motor (15) rotates in reverse for a short period of time when it starts, but after this reverse rotation is completed, during normal rotation of the rotary motor (15),
Since the drive of the rotary motor (15) stops when the time elapses from the time when the reference rotation position is detected to the required inclination angle of the wind direction changing blade (10), the wind direction can be changed regardless of the reverse rotation at the time of startup. The inclination angle of the blade (10) can be precisely positioned at the required inclination angle.

(Example) Hereinafter, an example of the present invention will be described based on the drawings from FIG. 2 onwards.

Figure 2 shows the internal configuration of the ceiling-embedded air conditioner (A), where (1) is the main body casing, and (2) is the internal space (3) formed by the main body casing (1). Two indoor heat exchangers are placed on the left and right in the figure (4) on the top.
) is a blower fan disposed between the side heat exchangers (2) and (2). The internal space (3) consists of two heat exchangers (2) and a partition plate (5) placed below (2).
A suction passage (6) having a suction port (6a) at the lower end is formed on the inside of the partition plate (5), and on the outside, a suction passage (6) having a suction port (6a) at the lower end is formed. As shown, a blowing passage (7) having wind blowing ports (7a) on all sides is formed. Then, by operating the blower fan (4), the air sucked in from the suction port (6a) is circulated through the suction passage (6) to the heat exchangers (2), (2) for heat exchange, and then the cold air or warm air is heated. The wind blows out through the passageway (7) to the wind outlet (7a).
) and into the room.

Therefore, the four air outlets (7a) of the air outlet passage (7)
As shown in Fig. 4, the valley breeze outlet (7a)
Plate-shaped wind direction changing blades (10) for changing the direction of the wind blown out from the air outlet into multiple stages (for example, five stages) are arranged along the wind outlet (7a). Each of the wind direction changing blades (10) has bearings (11) at both ends thereof.
and a universal joint (12), which is rotatably supported by each other and shown in detail in FIG.
2) They are integrally interlocked and connected by rods (13), (13) and crank (14) that connect them. In addition, at the connection part between the predetermined wind direction changing blades (10) and (1o) (the corner part of the main body casing (1)), a geared motor is installed to change the inclination angle of the wind direction changing blade (10). A motor (15) is arranged. The rotary motor (15) has a characteristic of rotating in reverse for a short period of time when starting, and as shown in FIG.
The above-mentioned crank (
14) are rotatably connected to each other, and the rotary motor (1
The crank (14) is rotated based on the rotational movement of step 5), and the inclination angles of the four wind direction changing blades (10) are integrally changed.

As shown in FIG. 7, the rotary motor (15) includes a cam member (20) attached to its axis, and a
) is engaged with the cam member (20) according to the rotational movement of the cam member (20).
It has a microswitch (21) that operates N-OFF, and the position of the rotary motor (15) at the ON time and OPP time is determined by the 0N10FF operation of the microswitch (21) by the cam member' (20). A rotational position detection means (22) is configured to detect these as a first reference rotational position and a second reference rotational position, respectively. and,
The rotating operation and stopping of the rotary motor (15) is controlled based on the ON-OFF operation of the microswitch (21).

In other words, as shown in Fig. 8, the power supply circuit (23) of the rotating motor (15) has a normally open contact (RY-
1) is interposed, and the operation of the relay (RY) is controlled by a controller (25) to which the ON-OFF signal of the microswitch (21) is input.

Next, the rotary motor (1) is driven by the controller (25).
The operation control in step 5) will be explained based on the flowcharts of FIGS. 9 and 10 and with reference to FIG. 11.

First, in FIG. 11, the positions on the rotary motor (15) corresponding to the five inclination angle settings of the wind direction changing vane (10) are designated as Poo, Po+, PO2, PO3, and PO4, respectively.
For example, if the inclination angle of the wind direction changing blade (10) is at the reference inclination angle Poo, this is set as the second set inclination angle PO.
2, in Fig. 9, after starting, the relay (RY) is turned on in step S1 to start the rotary motor (15), and then the micro switch (21) is turned on in step S2. Determine whether or not, O
Waiting for YES when N is activated, that is, when the rotary motor (15) is at the first rotation reference position, the timer is counted in step S3 to start time measurement, and step S4
After waiting for the time t02 to elapse from this rotation reference position to the second set tilt angle PO2, the relay (R
Y) is turned OFF to stop the rotation of the rotary motor (15), and the process ends.

For example, when changing from the second set inclination angle PO2 to another set inclination angle (for example, the fourth set inclination angle P04), in FIG. 10, after starting, the relay (RY) is turned ON in step S1. Rotating motor (
15), in order to determine whether the reference inclination angle POO has passed, the microswitch (21) or
It is determined whether the FF is activated or not, and it is determined that the OFF operation is at the second reference rotational position.In step S3, a timer is counted and time measurement is started, and in step S4, from this second reference rotational position. Time to standard inclination angle P○○ 1 (
.

If 0 has passed, it is determined that the reference inclination angle POO has been passed.

Thereafter, in step S5, it is determined whether the rotary motor (15) is at the first rotation reference position by turning on the microswitch (21), and if YES is determined at the first rotation reference position.
In the case of
Wait for the time to4 to reach the set inclination angle P○4,
In step S8, the relay (RY) is turned off to stop the rotation of the rotary motor (15), and the process ends.

Therefore, in the above control flow, when changing the inclination angle of the wind direction changing blade (10) in each step S1 of FIGS. 9 and 10, the normally open contact (RY-1) is turned on by ON control of the relay (RY). is closed to form a power supply circuit (23), thereby configuring a starting control means (80) for starting the rotary motor (15>).

Further, by steps 82 to S5 in FIG. 9 and steps 82 to S8 in FIG. 10, "1. Start control means (30)
While the rotary motor (15) is operating, the rotational position detecting means (22) receives an ON operation signal and an OFF operation signal of the microswitch (21), and receives an 0N10FF operation signal of the microswitch (21). , that is, at the reference rotational position of the rotary motor (15), and the time to○, t○I, to2. corresponding to the required inclination angle of the wind direction changing blade (10) is measured. A stop control means (31) is configured to stop the rotational operation of the rotary motor (15) at the time of redness of t○3 or toa.

Therefore, in the above embodiment, when changing the wind direction, the rotation motor (15), which is a geared motor, is started and controlled by the start control means (30). At this time, due to the characteristics of the geared motor, after the geared motor rotates in reverse for a short period of time, it shifts to forward rotation and the inclination angle of the wind direction changing blade (10) is changed.

Then, while the rotary motor (22) is in operation, the microswitch (21) of the rotational position detection means (22) is set to 0.
The first rotation motor (15) is activated by N10PF operation.
Or when the second reference rotational position is detected, the stop control means (
81), time measurement by a timer is started at each reference rotation position, and thereafter, the required inclination angles Poo, Po+, PO2, and P of the wind direction changing blade (10) are determined.

3 or the times too, tot, t0 corresponding to Po11
2. When t03 or toa has elapsed, the operation of the rotary motor (15) is controlled to stop at this point, and the wind direction changing blade (
10) are the required inclination angles Poo, Po+, PO2, Po
He will be positioned at 3 or po4. the result,
Four air outlets (7a) on the bottom of the main casing (1)...
・The direction of the wind blowing out has been changed.

At that time, when the rotary motor (15) is started, the rotary motor (15) rotates in the reverse direction, so as in the past, the timer time required for each set inclination angle poo to P○4 (motor drive For those that set the time in advance,
Although the inclination angle of the wind direction changing blade (10) is shifted by the amount corresponding to the reversal time of the rotary motor (15), in the present invention, during normal rotation of the rotary motor (15), the first or first The timer time required from the time when the 2nd reference rotational position is detected to each set tilt angle POo - p04 t OO
' = t O4 is set in advance, so the rotation motor (
Regardless of the reverse operation at the time of starting the wind direction changing blade (15)
The inclination angle of 0) can be precisely controlled to the required inclination angle P○○~P04.

(Effects of the Invention) As explained above, according to the wind direction changing device of the air conditioner of the present invention, the inclination angle of the wind direction changing blade is changed based on the rotational operation of the rotary motor consisting of a geared motor, so that the wind direction changing blade can be When changing the wind direction in multiple stages, the motor drive time from the time when the reference rotation position is detected after the rotation motor is started to each set tilt angle is set, so the reverse rotation time when the geared motor is started. It is possible to prevent deviations in the control of the tilt angle due to this, and it is possible to perform the tilt angle control with high accuracy.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of the present invention. Figures 2 to 11 show embodiments of the present invention; Figure 2 is a vertical side view of a ceiling-suspended air conditioner; Figure 3 is a bottom view of the lower surface of the main body casing; Figure 4 is a change in wind direction. 5 is a perspective view of the universal joint; FIG. 6 is a side view showing how the rotary motor and the wind direction changing blade are connected; FIG. 7 is a diagram showing the schematic internal configuration of the rotary motor; FIG. 8 is an electric circuit diagram showing operation control of the rotary motor, FIGS. 9 and 10 are flowcharts showing inclination angle control of the wind direction changing blade by the controller, and FIG. 11 is an operation explanatory diagram. (7)...Air outlet, (7a)...Air outlet, (1
0)...Wind direction changing blade, <15)...Rotating motor,
(20)...Cam member, (21)...Micro switch, (22)...Rotational position detection means, (25)...
Controller, (30)...Start control means, (31)...
・Stop control means. Fig. 1 Fig. 2 Fig. 3 Fig. 7 Fig. 9 Fig. 10 (Tomi,,, 5TART 0S1 ＼ Rotating motor starting micros N. OFF m 2 S3 YES Evening 17〃Rant too company vN0 5YE5 N. ON ・ (::F4M””’ ”” timer/) f7 unt 3] \57 to4 粁jl'7' N0

Claims (1)

[Claims] (1) Wind direction changing blade (1) placed at the wind outlet (7a)
0) by a rotary motor (
15), the above-mentioned wind outlet (7a
) A wind direction changing device for an air conditioner configured to change the direction of wind blown from the rotary motor (15).
a rotational position detection means (22) for detecting a reference rotational position of the wind direction changing blade (10), and a starting control means (30) for starting the rotary motor (15) when changing the inclination angle of the wind direction changing blade (10);
During the operation of the rotary motor (22) by the start control means (30), time measurement is started from the time when the reference rotational position of the rotary motor (15) is detected by the rotational position detection means (22), and the wind direction is determined. A wind direction changing device for an air conditioner, comprising: a stop control means (31) that stops the operation of a rotary motor (15) when a time period corresponding to a required inclination angle of a changing blade (10) has elapsed.