JPH0652134B2 - Air conditioner wind direction changing device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an improvement in a wind direction changing device that changes the wind direction of hot air or cold air blown from a wind outlet of an air conditioner, and more particularly, to the improvement of 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, for example, as disclosed in Japanese Utility Model Laid-Open No. 60-178742, a wind direction changing blade is rotatably arranged at a wind outlet, and A rotary motor is connected to one end of the axis of the wind direction changing blade, and when the wind direction is changed, the inclination angle of the wind direction changing blade is appropriately changed by the rotation motor so that the wind direction of the wind blown out from the wind outlet is changed. Are known.

(Problems to be Solved by the Invention) By the way, when the inclination angle of the wind direction changing blade is controlled in a plurality of stages (for example, three stages or four stages) by the rotary motor, when the inclination angle is deviated in each stage, the wind direction is changed. Because of the large deviation from the desired wind direction, it is desirable to control the inclination angle with high accuracy.

However, when the rotary motor is composed of a geared motor, the geared motor is reversely rotated for a very short time (for a few seconds) at the time of its start, and then is normally rotated to make the wind direction changing blade normal. Due to the driving in the direction, the type in which the tilt angle is changed by presetting the drive time of the rotary motor until the wind direction changing blade reaches the required tilt angle with reference to the start time of the rotary motor There is a drawback that the tilt angle of the wind direction changing blade is displaced by the tilt angle corresponding to the reverse rotation time, and the control accuracy is reduced. This also applies to a geared motor provided with a claw for preventing reverse rotation. In this case, the play rotates in the reverse direction by the amount corresponding to the play, and there is variation in this play. If the motor drive time from the start of the motor to the required tilt angle is set to be large in consideration, a large deviation in the tilt angle will occur by a time corresponding to the variation in the play.

The present invention has been made in view of such a point, and an object thereof is to set a reference rotation position in advance in a rotary motor (geared motor) and change the inclination angle of the wind direction changing blade (when changing the wind direction). After starting the geared motor, the reference rotation position is detected, and the wind direction changing blade is controlled to the required tilt angle by using this reference rotation position as a reference for setting the motor drive time. By reducing the deviation of the tilt angle due to the reverse rotation time at the time,
It is to control the wind direction changing blades to the required inclination angle with high accuracy.

(Means for Solving the Problem) In order to achieve the above object, the solving means of the present invention is
As shown in the figure, the angle of inclination of the wind direction changing vanes (10) arranged at the air outlet (7a) is set to a rotary motor consisting of a geared motor.
The target is a wind direction changing device of an air conditioner, which is changed in a plurality of stages by (15) to change the wind direction of the wind blown out from the wind outlet (7a). Then, the rotary motor (1
Rotational position detection means (22) for detecting the reference rotational position of 5),
When changing the inclination angle of the wind direction changing blade (10)
Starting control means (30) for starting (15), and the starting control means
During operation of the rotary motor (15) by the (30), time measurement is started from the time when the reference rotational position of the rotary motor (15) is detected by the rotary position detecting means (22), and the wind direction changing blade (10 )
Rotating motor (15) at the time corresponding to the required tilt angle of
And a stop control means (31) for stopping the operation of.

(Operation) With the above configuration, in the present invention, when the wind direction is changed, the rotation motor (geared motor) (15) is start-controlled by the start control means (30), and after being reversely rotated only during the minute time,
The forward rotation is performed to change the inclination angle of the wind direction changing vane (10).
When the rotation position detecting means (22) detects the reference rotation position of the rotation motor (15) during the operation of the rotation motor (15), the time is measured at the reference rotation position of the rotation motor (15) for the first time. When the time corresponding to the required inclination angle of the wind direction changing blade (10) has elapsed after the start of the stop control means (31)
Thus, the operation of the rotary motor (15) is controlled to stop. As a result, the inclination angle of the wind direction changing blade (10) is changed to the required inclination angle, and the wind direction of the wind blown out from the wind outlet (7a) is changed.

At that time, the rotation motor (15) reversely rotates for a very short time at the time of its start because of its characteristics, but during the forward rotation operation of the rotation motor (15) whose reverse rotation has ended, the reference rotation Wind direction changing vane (10) based on the time when the position is detected
Since the drive of the rotary motor (15) is stopped when the time until the required tilt angle has passed, the tilt angle of the wind direction changing blade (10) can be accurately positioned at the required tilt angle regardless of the reverse rotation at the time of its start. it can.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings starting from FIG.

FIG. 2 shows the internal structure of a ceiling-embedded air conditioner (A), where (1) is the main casing and (2) is the main casing.
Two indoor heat exchangers arranged on the left and right in the figure in the upper part of the internal space (3) formed by (1), and (4) the both heat exchangers (2), (2)
It is a blower fan placed in between. Interior space above (3)
Is a partition plate placed below the two heat exchangers (2) and (2)
Partitioned by (5), the inside of the partition plate (5) is formed with a suction passage (6) having a suction port (6a) at the lower end, and at the outer side, a suction passage (6) is formed at the lower end. As shown in FIG. 3, an outlet passage (7) having air outlets (7a) is formed in all directions. Then, by operating the blower fan (4), the air sucked from the suction port (6a) is circulated from the suction passage (6) to the heat exchangers (2) and (2) for heat exchange, and then the cold air or warm air The air is blown into the room from the air outlet (7a) through the air passage (7).

Thus, the four air outlets (7a) of the air outlet passage (7) are
As also shown in FIG. 4, the plate-shaped wind direction changing blades (10) for changing the wind direction of the air blown out from each of the air outlets (7a) in a plurality of stages (for example, five stages) ... ) Is arranged along. Both ends of each wind direction changing vane (10) are rotatably supported by bearings (11).
The universal joints (12) shown in detail in FIG. 5 and rods (13), (13) and cranks (14) connecting the universal joints (12) to each other.
Are integrally linked by. In addition, at a connecting portion (corner portion of the main body casing (1)) between the predetermined wind direction changing blades (10) and (10), a rotation composed of a geared motor for changing the inclination angle of the wind direction changing blade (10) is provided. The motor (15) is located. The rotation motor (15) has a characteristic that it reversely rotates for a short time at the time of starting, and as shown in FIG.
The crank (14) is rotatably connected to the first motor through a first rod (17) and a second rod (18) rotatably connected to the first rod (17). The crank (14) is rotated based on the rotating operation of (15) to integrally change the inclination angles of the four wind direction changing vanes (10).

As shown in FIG. 7, the rotary motor (15) engages with a cam member (20) attached to its axis and with the cam member (20) in accordance with the rotational movement of the cam member (20). The ON / OFF operation of the micro switch 21 by the cam member 20 causes the ON / OFF operation of the micro switch 21.
The rotational position detecting means (22) is configured to detect the position of the rotary motor (15) at the time of OFF as the first reference rotational position and the second reference rotational position, respectively. Then, the turning operation of the rotary motor (15) and its stop are controlled based on the ON-OFF operation of the micro switch (21).

That is, as shown in FIG. 8, the normally open contact (RY-1) of the relay (RY) is provided in the power supply circuit (23) of the rotary motor (15), and the operation of the relay (RY) is ON-O of the above micro switch (21)
It is controlled by the controller (25) to which the FF signal is input.

Next, the operation control of the rotary motor (15) by the controller (25) will be described based on the flowcharts of FIGS. 9 and 10 with reference to FIG.

First, in FIG. 11, the position on the rotary motor (15) corresponding to the five-step set inclination angles of the wind direction changing blade (10) is set to P ₀₀ ,
When the inclination angle of the wind direction changing blade (10) is, for example, at the reference inclination angle P ₀₀ by referring to P ₀₁ , P ₀₂ , P ₀₃ , and P ₀₄ , this is changed to the second set inclination angle P ₀₂ . Sometimes, in FIG. 9, after starting, step S
After starting the relay (RY) is turned ON actuates the the rotation motor (15) at _1, the time at Step S ₂ microswitch (21), it is determined whether or not the operated ON, and ON operation, i.e. rotating motor
Waiting for the time of YES in the first rotational reference position of (15), and starts time measurement by counting the timer at Step S _3,
This rotation reference position in Step _{S 4} after waiting for the time _{t 02} to the second set angle of inclination _{P 02,} Step _{S 5}
Then, the relay (RY) is turned off to stop the rotation operation of the rotary motor (15), and the operation is completed.

Further, for example, when changing from the second set tilt angle P ₀₂ to another set tilt angle (for example, the fourth set tilt angle P ₀₄ ), after starting in FIG. 10, the relay (RY) is turned on in step S _1. after starting the rotation motor (15) by ON operation, in order to determine the passage of the reference tilt angle P _00, the microswitch (21) determines whether the OFF operation in step S _2, if OFF operation it is determined to be in the second reference rotational position, and starts time measurement by counting the timer at step S _3, the elapsed time t ₀₀ from the second reference rotational position at step S ₄ to the reference tilt angle P ₀₀ If so, it is determined that the reference inclination angle P ₀₀ has been passed.

Thereafter, the rotary motor by the ON operation of the microswitch (21) (15) it is determined whether the first rotation reference position at step S _5, in the case of YES in the first rotational reference position,
Start the time measured by the timer in step S _6, after waiting for the time t ₀₄ from the first rotation reference position at step S ₇ to the fourth set tilt angle P _04, Step S ₈
Then, the relay (RY) is turned off to stop the rotation operation of the rotary motor (15), and the operation is completed.

Therefore, in the above control flow, the steps S ₁ of Figure 9 and Figure 10, when the inclination angle of the change in wind direction changing blades (10), the normally open contacts by the ON control of the relay (RY)
(RY-1) is closed to form the power supply circuit (23), and the rotary motor (1
The starting control means (30) is configured to start 5).

Further, step S ₂ to S ₅ and FIG. 9, in step S ₂ to S ₈ of FIG. 10, in during operation of the rotary motor (15) by the start control means (30), said rotational position detecting means (2
When the ON / OFF signal of the micro switch (21) in 2) is received and the ON / OFF operation signal of the micro switch (21) is received, that is, the time at the reference rotation position of the rotary motor (15) The measurement is started, and the rotation operation of the rotary motor (15) is stopped when the time t ₀₀ , t ₀₁ , t ₀₂ , t ₀₃ or t ₀₄ corresponding to the required inclination angle of the wind direction changing blade (10) has elapsed. The stop control means (31) is configured.

Therefore, in the above-described embodiment, when the wind direction is changed, the start control means (30) controls the start of the rotary motor (15) including the geared motor. At this time, due to the characteristics of the geared motor, after reversing for only a short time, the rotation is shifted to the forward rotation operation and the inclination angle of the wind direction changing blade (10) is changed.

Then, while the rotary motor (22) is operating, the first or second reference rotary position of the rotary motor (15) is detected by ON / OFF operation of the micro switch (21) of the rotary position detecting means (22). Then, the stop control means (31) starts the time measurement by the timer at each of the reference rotational positions, and thereafter, the required inclination angles P ₀₀ , P _{01 of} the wind direction changing blade (10),
Times t ₀₀ , t corresponding to P ₀₂ , P ₀₃ or P _{04
When 01} , t ₀₂ , t _03, or t ₀₄ has elapsed, the operation of the rotary motor (15) is controlled to stop at this point, and the wind direction changing blade (10) causes the required inclination angles P ₀₀ , P ₀₁ , P ₀₂ , P
₀₃ or P ₀₄ . As a result, the wind directions of the air blown from the four outlets (7a) on the lower surface of the main body casing (1) are changed.

At that time, when starting the rotary motor (15),
Since (15) rotates in the reverse direction, if the timer time (motor drive time) required for each set inclination angle P _{00 to} P ₀₄ is preset based on this starting time as in the conventional case, the rotary motor (15) Wind direction changing blades according to the reversing time of the blade (10)
However, in the present invention, during the forward rotation operation of the rotary motor (15), from the time when the first or second reference rotational position is detected to each of the set tilt angles P _{00 to} P ₀₄ . Since the required timer time t _{00 to} t ₀₄ is set in advance, regardless of the reverse rotation operation at the time of starting the rotary motor (15),
Required tilt angle of wind direction changing blade (10) Tilt angle P ₀₀ ~ P
₀₄ can be controlled with high precision.

(Effects of the Invention) As described above, according to the wind direction changing device for an air conditioner of the present invention, the inclination angle of the wind direction changing blades is changed based on the rotation operation of the rotary motor including the geared motor, so that the wind outlets. When changing the wind direction from, the motor drive time from the time when the reference rotation position is detected to the set inclination angle is set after the rotation motor is started. The deviation of the control of the tilt angle due to the rotation time can be prevented, and the tilt angle control can be accurately performed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the configuration of the present invention. 2 to 11 show an embodiment of the present invention, FIG. 2 is a vertical sectional side view of a ceiling-suspended air conditioner, FIG. 3 is a bottom view of the lower surface of the main body casing, and FIG. FIG. 5 is a perspective view of a universal joint, FIG. 6 is a side view showing a state in which a rotary motor and a wind direction changing vane are connected, and FIG. 7 is a diagram showing a schematic internal structure of the rotary motor. FIG. 8 is an electric circuit diagram showing the operation control of the rotary motor, FIGS. 9 and 10 are flow charts showing the inclination angle control of the wind direction changing blades by the controller, and FIG. 11 is an operation explanatory diagram. (7) ... Blowout passage, (7a) ... Wind outlet, (10) ... Wind direction changing blade, (15) ... Rotary motor, (20) ... Cam member, (21) ... Micro switch, (22) ... Rotation position detection Means, (25) ... Controller, (30) ... Start control means, (31) ... Stop control means.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Motoshi Nishio 1304 Kanaoka-machi, Sakai-shi, Osaka Daikin Industries, Ltd. Sakai Plant Kanaoka factory

Claims (1)

[Claims] 1. A wind direction changing blade (1) arranged at a wind outlet (7a).
Rotation motor consisting of geared motor (15)
By changing the wind direction of the air blown out from the air outlet (7a) by changing in a plurality of stages by the air direction changing device of the air conditioner, rotation for detecting the reference rotation position of the rotation motor (15) Position detection means (22) and the wind direction changing blade
A start control means (30) for starting the rotary motor (15) when the tilt angle of (10) is changed, and the rotational position detection means (22) during the operation of the rotary motor (22) by the start control means (30). ) Starts the time measurement from the time when the reference rotational position of the rotary motor (15) is detected, and stops the operation of the rotary motor (15) when the time corresponding to the required tilt angle of the wind direction changing blade (10) has elapsed. A wind direction changing device for an air conditioner, comprising: stop control means (31).