JP2000199639A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent occurrence of incompatibility in the movement of flaps in diffusers at two locations when they are swung. SOLUTION: When flaps at two locations are selected to be swung, swinging is started right away (steps 254-258) in the case where diffusers are in a closed state. In the case where both of the flaps are in fixed positions, respectively, one flap is swung at a normal velocity and the other flap is swung at a velocity faster than the former (steps 260-264). Further, in the case where only one flap is in a fixed position, this flap is swung at a high velocity (steps 270, 272) and when the positions of both flaps coincide with each other, they are swung at a normal velocity (steps 266, 268).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly, to a so-called ceiling-embedded cassette type air in which an indoor unit having a plurality of outlets each having a flap is installed on a ceiling surface. Concerning the harmonic machine.

[0002]

2. Description of the Related Art In an air conditioner (hereinafter, referred to as an "air conditioner") for controlling indoor air, refrigerant is circulated in a refrigeration cycle formed between an indoor unit and an outdoor unit. A heat exchanger is provided in the indoor unit of the air conditioner, and the air that has passed through the heat exchanger is blown into the room from the outlet. In an air conditioner, when a refrigerant is circulated in a heat exchange device of an indoor unit, heat exchange is performed between the refrigerant and air passing through the heat exchanger to control the temperature of air blown into the room.

In such an air conditioner, there is a so-called ceiling cassette type in which an indoor unit is embedded in a ceiling surface.
The ceiling cassette type indoor unit includes a two-way outlet type in which a suction port for sucking indoor air is provided at a central portion, and outlets are provided on both sides of the suction port. Each of the outlets is provided with a flap, and by operating the flap, the blowout direction of the conditioned air can be changed.

Some air conditioners of the two-way air outlet type are capable of fixing the position of the flap at each outlet or operating the flap at a constant speed by operating a remote control switch.
As a result, a desired air-conditioning feeling can be obtained in each area opposing each outlet.

[0005]

However, in such an air conditioner, if the flaps of both outlets are selected to swing, the two flaps have the same speed but swing separately, or first, With the flap stopped at a predetermined angle, the other flap is swung, and when the positions of both flaps coincide, the swing of the fixed flap is started. In this way, if the flaps of both outlets swing separately or the swing of both flaps is selected, but the swing of one flap is temporarily stopped, the operation of the flaps becomes uncomfortable. Will be caused.

In addition, it takes time from when the swing is set to when both flaps actually start the swing operation, and this also gives a sense of discomfort.

[0007] The present invention has been made in view of the above-mentioned facts, and the flaps provided at each of the two-way outlets can provide a desired operation in a short time without causing a sense of incompatibility with the operation of each flap. It is an object of the present invention to propose an air conditioner that can blow out conditioned air to a region.

[0008]

In order to achieve the above object, according to the present invention, two outlets are provided with flaps which are rotatable within a predetermined range, and each of the flaps is individually rotated. This is an air conditioner that can set the blowing direction of the conditioned air for each outlet, and is provided for each of the flaps to rotate and operate the flap within a predetermined range by rotating the flap. A flap motor that can be stopped at a rotation position, position determination means that determines the position of each flap rotated by the flap motor, and a swing that rotates each of the flaps within the predetermined range are selected. When the swing is started by changing the rotation speed between the flaps by changing the rotation speed between the flap motors, Based on the determination result by matching the rotational speed of the flap motor, characterized in that it comprises a flap control means for swinging the flap in the same predetermined rotational speed, a.

According to the present invention, when two flap swings are selected, the flap motors are driven at different driving speeds. As a result, the two flaps
Initiate a swing at different rotational speeds. By changing the rotation speed of the flaps as described above, if the two flaps have different directions, the two flaps relatively approach each other in the same direction.

In this way, when the directions of the two flaps coincide, if the driving speed of the flap motor is changed so that the rotation speed of each flap becomes the same,
The two flaps can be synchronously swung at the same rotation speed.

Thus, the swing can be performed by synchronizing the two flaps without temporarily stopping one of the flaps. Therefore, when the swing of the two flaps is selected, a sense of incongruity is generated. I will not let you.

As such a flap motor of the present invention, a stepping motor is more preferably applied. The rotation speed of the stepping motor can be easily changed only by changing the number of pulses per unit time at the time of driving, and the control of the rotation speed becomes extremely easy. Further, since the amount of rotation is determined by the number of pulses, the position of the flap can be easily determined.

According to a second aspect of the present invention, the flap control means causes one of the flaps to swing at the predetermined rotation speed and the other flap to rotate at a predetermined rotation speed. It is characterized by speeding up.

According to these inventions, the rotation speed of the flap motor is changed so that the rotation speed of the flap becomes faster. Thus, the two flaps can be quickly swung in synchronization with each other.

According to a third aspect of the present invention, when one of the flaps is fixed at a predetermined position and the other is swinging, the flap control means swings the fixed flap. The swing is started at a rotation speed higher than that of the flap.

According to the present invention, the flap during the swing is swung at the same speed, and the flap that is not swinging starts to swing at a high rotation speed. Thus, the two flaps can be synchronously swung by a simple control that changes only the rotation speed of the flap that is not swinging.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an air conditioner (hereinafter, referred to as “air conditioner 10”) applied to the present embodiment. This air conditioner 10 is an indoor unit 1
2 and the outdoor unit 14. The air conditioner 10 is of a so-called ceiling cassette type, and the indoor unit 12 is installed behind the ceiling of the room to be air-conditioned, so as to correspond to the lower surface of the casing 40 of this indoor unit 12 (the lower surface in FIG. 1). An opening is formed in a ceiling plate (not shown), and a decorative panel 42 is attached to cover the opening.

FIG. 2 shows a refrigeration cycle formed in the air conditioner 10. The indoor unit 12 and the outdoor unit 14 of the air conditioner 10 are connected by a thick refrigerant pipe 16A and a thin refrigerant pipe 16B. The indoor unit 12 is provided with a heat exchanger 18, and one end of each of the refrigerant pipes 16 </ b> A and 16 </ b> B is connected to the heat exchanger 18.

The other end of the refrigerant pipe 16A is connected to the outdoor unit 1
The other end of the refrigerant pipe 16B is connected to the valve 20B of the outdoor unit 14. The valve 20A is connected to the four-way valve 2 via the muffler 22A.
4 is connected. The four-way valve 24 is connected to a compressor 26 via an accumulator 28,
It is connected to the compressor 26 via the muffler 22B.

Further, the outdoor unit 14 is provided with a heat exchanger 30. One of the heat exchangers 30 is connected to the four-way valve 24 and the other is connected to the capillary tube 3.
2, connected to the valve 20B via a strainer 34, an electric expansion valve 36, and a modulator 38. Thus, a closed refrigerant circulation path that forms a refrigeration cycle for circulating the refrigerant between the indoor unit 12 and the outdoor unit 14 is configured. Note that a general configuration can be applied to the refrigeration cycle.

The air conditioner 10 performs cooling and heating using a refrigerant circulated in a refrigeration cycle by operating a compressor 26. That is, in the air conditioner 10, the operation mode is switched between the cooling mode including the dry mode and the heating mode by switching the four-way valve 24, and the evaporating temperature of the refrigerant in the heat exchanger 18 is adjusted by the opening degree of the electric expansion valve 36. While circulating the refrigerant compressed by the compressor 26, the air passing through the heat exchanger 18 is cooled or heated. In FIG. 2, the arrows indicate the flow of the refrigerant during the heating operation (heating mode) and during the cooling operation (cooling mode and dry mode).

As shown in FIG. 1, the indoor unit 12
Is formed in a rectangular shape, and a suction port 46 is provided at the center. In addition, outlets 48 and 50 are provided on both sides in the width direction (direction orthogonal to the longitudinal direction) across the inlet 46.

A cross flow fan (not shown) is provided in the casing 40 of the indoor unit 12 together with the heat exchanger 18. When the cross flow fan is driven, the inside of the casing 40 from the suction port 46 is formed. The indoor air is sucked into the room. The air sucked into the casing 40 is blown out from the outlet 48 or the outlet 50 after passing through the heat exchanger 18 described above. At this time,
The air passing through the heat exchanger 18 exchanges heat with the refrigerant circulated in the heat exchanger 18 to control the temperature, so that the air is blown out from each of the outlets 48 and 50 as conditioned air. .

The outlets 48, 50 are provided with flaps 52, 54, respectively. Outlets 48, 50
Are formed along the longitudinal direction of the decorative panel 42, and each of the flaps 52, 54 has a longitudinal direction arranged along the longitudinal direction of the outlets 48, 50,
Both ends are pivotally supported. As a result, the outlet 48,
The direction in which the air-conditioning air is blown out from each of the air conditioners 50 can be changed. In addition, the air conditioner 10 includes a flap on the inner side of the flaps 52 and 54 for changing the blowing direction of the conditioned air in a direction orthogonal to the direction in which the blowing direction of the conditioned air by the flaps 52 and 54 is changed. There may be.

As shown in FIG. 3, the indoor unit 12
, A power supply board 56 and a control board 58 are provided. The power supply board 56 is provided with a motor power supply 62, a control circuit power supply 64, a serial power supply 66, and a drive circuit 68, and is supplied with AC power for operating the indoor unit 12. Further, a microcomputer 74 is provided on the control board 58 together with the serial circuit 70 and the drive circuit 72.

The drive circuit 68 of the power supply board 56 includes a fan motor (for example, DC
A brushless motor 76 is connected, and drive power is supplied from a motor power supply 62 in accordance with a control signal from a microcomputer 74 provided on the control board 58. At this time, the microcomputer 74 controls the number of rotations of the fan motor 76 by changing the output voltage to the drive circuit 68 in a range of 12 V to 36 V in 256 steps,
The amount of air-conditioning air blown from the outlet 50 is adjusted.

The drive circuit 72 of the control board 58 includes a flap motor 78 for operating the flaps 52 and 54.
A and 78B are connected. Also, the serial circuit 70
Is a serial power supply 66 of the microcomputer 74 and the power supply circuit 56.
To the outdoor unit 14. The microcomputer 74 is connected to the serial circuit 7.
The operation of the outdoor unit 14 is controlled by performing serial communication with the outdoor unit 14 via the control unit 0.

On the other hand, the indoor unit 12 is provided with a receiving circuit for receiving an operation signal from the remote control switch 120 (see FIG. 1), a display board 82 provided with a display LED for operation display and the like. The receiving section of the receiving circuit, the LED for operation display, and the like are provided on the decorative panel 42, so that the lighting state of the LED can be checked from inside the room, and the operation signal from the remote control switch 120. Can be received.

A microcomputer 74 is connected to a room temperature sensor 84 for detecting the room temperature and a heat exchange temperature sensor 86 for detecting the coil temperature of the heat exchanger 18. A serviceman LED, an operation changeover switch 88, and the like are provided, and these are connected to the microcomputer 74.

The operation changeover switch 88 is set to “normal operation”,
The air conditioner 10 is operated for switching between “test operation” and “stop”, and is operated in a state switched to “normal operation”, but is switched to “test operation” at the time of maintenance or the like.

On the other hand, the terminal unit 90
Is provided. The terminal plate 90 includes a terminal 9
0A, 90B and 90C are provided, and these terminals 90A to 90C are connected to the outdoor unit 14 so that the indoor unit 12
In addition to supplying power for operation, the serial communication between the indoor unit 12 and the outdoor unit 14 becomes possible. That is, in the air conditioner 10, the outdoor unit 14
The operation power is supplied to the indoor unit 12 after being branched from the outdoor unit 14.

In the air conditioner 10 configured as described above, when an operation signal from the remote control switch 120 is received, the operation mode, the operation frequency of the compressor 26, and the rotation speed of the cross flow fan 44 are determined based on the operation signal and room temperature. , Operating conditions such as wind direction, etc., and start the air-conditioning operation under the set operating conditions. In the outdoor unit 14, the four-way valve 24 is switched based on the operation mode, and the compressor motor that drives the compressor 26 is controlled so as to have the set operation frequency. Note that the room temperature can be detected not only by the room temperature sensor 84 but also by the remote control switch 120.

In the air conditioner 10, a stepping motor is used as the flap motors 78A and 78B (hereinafter referred to as "flap motor 78" when no distinction is made), and the microcomputer 74 controls the pulse speed when driving the flap motor 78. Is changed to control the rotation speed of the flap motor 78. In addition, the rotation amount of the drive shaft, that is, the movement amount of the flaps 52 and 54 (the movement amount of the flaps 52 and 54) depends on the number of pulses when driving the flap motor 78. Since the rotation angle is determined, the microcomputer 74 controls the positions of the flaps 52 and 54 by counting the number of pulses.

On the other hand, as shown in FIG.
Each of 2 and 54 is a fully open position (shown by a solid line in FIG. 4) with the tip directed substantially downward, and a fully closed position of blowout ports 48 and 50 (shown by a broken line in FIG. 4) oriented substantially horizontally. Are rotated by driving the flap motors 78A and 78B.

The air conditioner 10 can be stopped at any one of a plurality of preset positions between the fully closed position and the fully opened position. In the present embodiment, as an example, the distance between the fully open position and the fully closed position is divided into five, and the positions A, B, C,
D and E are set at the stop positions of the flaps 52 and 54.

The stop positions of the flaps 52 and 54 are set by operating the remote control switch 120 to set the wind direction. That is, each of the flaps 52 and 54 can be fixed to any of the positions A to E by the operation of setting the operating conditions with the remote control switch 120.

In the air conditioner 10, the flap 52,
A swing can be selected for each of the 54. The microcomputer 74 includes the flaps 52 to 54
When any of the swings is selected, the robot moves at a constant speed between the positions A to E.

On the other hand, in the air conditioner 10, the driving speed of the flap motor 78 is set in two stages, and the air conditioner 10 is driven at a low speed during a normal swing.
When the position adjustment is performed, the flap motor 78 is driven at a high speed.

The microcomputer 74 has 60 PPS (Pulse Par Second) and 24 PPS as the driving speed of the flap motor 78.
When two stages of 0 PPS are set and the normal swing is selected, the flap motor 78 is driven at 80 PPS. This allows the flaps 52, 54 to swing at a gentle speed.

Normally, when the operation of the air conditioner 10 is started, the microcomputer 74 sets the respective positions of the flaps 52 and 54 based on the wind direction and the like set on the remote control switch 120 and, for example, once fully opens. Position A
Then, the flaps 52 and 54 are moved to the set positions with the position as the origin. When one of the swings of the flap 52 and the flap 54 is selected, the microcomputer 74
The swing operation of the selected flap 52 or 54 is performed.

On the other hand, the microcomputer 74 controls the flaps 52, 5
4 are selected, the flaps 52, 5
While checking the position and the moving direction of 4, the flap 52,
One (for example, the one swinging) of 54 is swung at a normal speed, and the other (for example, the one fixed at a predetermined position) is swung at a high speed. As a result, when the positions and swing directions of the flaps 52 and 54 match, the microcomputer 74 drives both of the flap motors 78A and 78B to have a normal swing speed.

Accordingly, the microcomputer 74 sets the flap 5
The swings are performed in synchronization without stopping both 2 and 54. When the flaps 52 and 54 are synchronized as shown in FIG.
When the flap 52 moves in the direction of the arrow A1, the flap 52 moves in the direction of the arrow A2, and when the flap 52 moves in the direction of the arrow B1, the flap 54 moves in the direction of the arrow B2. Arrow A direction "
Hereinafter, the direction of arrow B1 and the direction of arrow B2 are referred to as “arrow B direction”).

That is, as shown in FIG. 5, on a control board 58 provided with a microcomputer 74, driving units 100 and 102 for controlling the flap motors 78A and 78B and the flap motors 78A and 78B are driven. Flap 5 by counting the number of pulses
Position determination units 104 and 106 for determining the positions of 2, 54 are formed. The determination results of the position determination units 104 and 106, that is, the count value of the number of pulses driving the flap motors 78A and 78B are input to the comparison unit 108 and the flap control unit 110.

In the comparing section 108, the position judging sections 104, 1
From the determination result of 06, it is determined whether or not the positions of the flaps 52 and 54 and the position and the moving direction match.

On the other hand, the flap control unit 110 swings or locks the flaps 52 and 54 from the wind direction setting unit 112 such as the remote control switch 120 together with the comparison results of the comparison unit 108 and the determination results of the position determination units 104 and 106. The fixed position is input when the object is fixed or fixed. The flap control unit 110 controls the driving units 100 and 102 based on these inputs.

Thus, when either the position (wind direction) or swing of the flaps 52, 54 is set by the remote control switch 120, the flap control unit 110 operates each of the drive units 100, 102 based on the setting result. Let it. At this time, when the fixed wind direction is set instead of the swing, the driving units 100 and 102 are stopped based on the position judgment of the position judgment units 104 and 106, and when the swing is selected, the flap motor 78 is set.
A, the driving unit 100 so that 78B is driven at a constant speed,
Activate 102.

When both swings of the flaps 52 and 54 are selected, if the positions of the flaps 52 and 54 do not match, the driving units 100 and 102 are caused to swing the flaps 52 and 54 at different speeds. The comparison unit 108 controls the flaps 52 and 5 during this swing.
When it is determined that the position 4 and the swing direction match,
The drive units 100 and 102 are controlled so that both of the flaps 52 and 54 have a normal swing speed.

In the air conditioner 10, the flap 52,
The operation of the remote control switch 120 is performed based on the setting of the remote control switch 120.
The configuration is not limited as long as the direction (wind direction) of the conditioned air from 8, 50 can be individually set, the swing can be individually selected, and the collective swing can be selected. For this purpose, the remote control switch 120
And its detailed description will be omitted.

The operation of the present embodiment will be described below.

In the air conditioner 10, the remote control switch 12
At 0, operation conditions such as an operation mode, a set temperature, a wind direction, and an air volume are set. When an operation signal corresponding to the set operation condition is received and input to the microcomputer 74, the air conditioning operation is performed based on the operation condition. To start.

At this time, the microcomputer 74 sets the operation mode based on the set operation conditions, and sets the operation frequency, air volume and air direction of the compressor 26 based on the operation conditions and the room temperature. The cross flow fan 44, the flap motors 78A and 78B, etc. are operated together with the outdoor unit 14 based on the above. In the outdoor unit 14, the four-way valve 24 is operated according to the operation mode, and the compressor 26 is driven at the set operation frequency.

As a result, conditioned air is drawn out from the outlets 48 and 50 of the indoor unit 12 at a flow rate and a wind direction according to the set operating conditions, and the conditioned air is conditioned so that the room temperature becomes the set temperature. Further, the room temperature is maintained at the set temperature.

In the air conditioner 10, the flaps 5 provided at the outlets 48 and 52 of the indoor unit 12 are provided.
2 and 54 are controlled according to the setting of the remote control switch 120.

Referring to the flow charts shown in FIGS. 6 to 8 and FIG.
The control of 2, 54 will be described.

The flowchart shown in FIG. 6 is executed when the operating conditions are set by operating the remote control switch 120 and the start of the air conditioning operation by the air conditioner 10 is instructed.

First step 20 of this flowchart
At 0, the operating conditions of the flaps 52 and 54, that is, the operating conditions set by the remote control switch 120,
The direction of the conditioned air blown from the outlets 48 and 50 is read as the setting of the flaps 52 and 54. Next step 202
Then, it is confirmed whether or not both of the flaps 52 and 54 are set to swing.

Here, when at least one of the flaps 52 and 54 is set to the fixed position (negative determination in step 202), the process proceeds to step 204 to perform an individual flap operation. When both swings of the flaps 52 and 54 are set (Yes in Step 202), the process proceeds to Step 206 to perform synchronous swing processing.

Thus, steps 204 and 206 are performed.
When the operation of the flaps 52 and 54 is performed in any of the cases, in step 208, it is confirmed whether or not the change of the flap operation is supported, and the change of the flap operation is instructed. The process proceeds to step 200, and the flap operation process is performed again.

In step 210, it is confirmed whether or not the stop of the air-conditioning operation is instructed. When the stop of the air-conditioning operation is instructed and the operation of the air conditioner 10 is stopped (step 2).
If the determination is affirmative at 10), the process proceeds to step 212, where the flaps 52 and 54 are moved to the fully closed position where the outlets 48 and 50 are closed, and the operation of the flaps 52 and 54 is terminated.

That is, the air conditioner 10 operates and stops the flaps 52 to 54 each time the direction of the conditioned air blown from the outlets 48 and 50 is set or changed by operating the remote control switch 120 or the like. At times, the flaps 52, 54 are moved to the fully closed position.

On the other hand, FIG. 7 shows an example of the individual flap operation executed by moving to step 204 in the flowchart of FIG. Since this flowchart is executed for each of the flaps 52 and 54, one flap 52 will be described as an example.

In this flowchart, it is checked in the first step 220 whether or not the flap 52 is set to the swing, and when the flap 52 is set to the swing (step 22).
If the determination is 0, the process proceeds to step 222 to read the set fixed position.

In the next step 224, the flap motor 78A is operated at a predetermined speed to move the flap 52 to the fully open position. Thereafter, when the flap 52 moves to the fully open position, this position is set to the original position (step 2).
26) The flap 52 is moved from this position to the set fixed position (step 228). The driving speed of the flap motor 78A at this time may be low (for example, 60 PPS) or high (for example, 24 PPS).
0 PPS).

Next, at step 230, the flap 52
Check if the position has reached the set fixed position,
When the flap 52 reaches the fixed position where the flap 52 has been set (Yes in step 230), the process proceeds to step 232 to stop the flap motor 78A. Thereby, the flap 52 is fixed at the set position.

On the other hand, when the swing of the flap 52 has been set, an affirmative determination is made in step 220, and the routine proceeds to step 234. In this step 234, the flap motor 78A is driven at a predetermined speed to
Move 2 to the fully open position. The driving speed of the flap motor 78A at this time may be high, but is more preferably low, which is the speed at which the swing is performed.

When the flap 52 reaches the fully opened position, this position is set to the original position in step 236, and the swing of the flap 52 is started from this position. That is, the flap motor 78A is driven at a low speed which is the speed at the time of the swing.

As a result, the flaps 52 and 54 are fixed at the set positions or perform a swing operation until the setting is changed or the operation of the air conditioner 10 is completed. Note that the setting of the original position of the flap 52 in step 226 or step 236 is performed at least once in one air-conditioning operation cycle (from the start of the operation of the air conditioner 10 to the end thereof). May be omitted.

On the other hand, FIG. 8 shows an example of the synchronous swing executed by moving to step 206 in the flowchart of FIG.

In this flowchart, in the first step 250, it is checked whether or not both the flaps 52., 54 are in the fixed position, and in step 252, it is checked whether or not the fixed position is the closed position. .

Here, when the swing of the flaps 52 and 54 is selected at the same time when the operation of the air conditioner 10 is started (negative determination in step 250 and affirmative determination in step 252), the process proceeds to step 254, where the flaps 52 and 54 are selected. Is moved to the fully open position to set the respective original positions. Thereafter, in step 258, the flap motors 78A and 78B are driven at a low speed which is the speed at the time of the swing so that the flaps 52 and 54 move at a constant speed. . This allows
The flaps 52 and 54 swing while being synchronized.

On the other hand, when the flaps 52 and 54 are fixed at predetermined positions (steps 250 and 252).
In the affirmative determination, the process proceeds to step 260, where the fixed positions of the flaps 52 and 54 are read, and the next step 26 is executed.
In 2, the flap 52 based on the read fixed position,
The speed at the start of the swing of 54 is set.

Here, for example, when the flap 52 is at the position D and the flap 54 is at the position B, the flap 52 moves in the direction of the arrow A at a normal swing speed, and the flap 54 moves at a high speed in the direction of the arrow A. The driving speed of the flap motors 78A and 78B is set so as to move.

Thereafter, in step 264, each of the flap motors 78 and 78B is driven at the set driving speed. In step 266, the flaps 52, 54
It is checked whether the position and the moving direction match.

One of the flaps 52, 54 moves at a normal swing speed, while the other moves at a high speed, so that the flaps 52, 54 move closer to each other and finally overlap.

As a result, if an affirmative determination is made in step 266, the process proceeds to step 268, where the flaps 52, 5
The driving speed of the flap motor 78, which is driven at a high speed, is switched to a low speed so that both of them have the same swing speed. As a result, the swings of the flaps 52 and 54 start in synchronization. When the fixing positions of the flaps 52 and 54 are the same, steps 264 and 266 can be omitted.

On the other hand, when one of the flaps 52 and 54 swings and the other is at the fixed position,
Is negative, and the process proceeds to step 270. In this step 270, the swing of the flap during the swing is continued as it is, and in step 272, the fixed flap is moved at a high speed. That is, the flap motor 78 for operating the flap at the fixed position is driven at a high speed.

Thus, based on the speed difference between the flaps 52 and 54, the flaps 52 and 54 approach and the flaps 52 and 54 approach.
If the position and the moving direction of 4 match, an affirmative determination is made in step 266, and the swing is started while being synchronized at the same swing speed.

That is, as shown in FIG.
For example, when the flap 52 is fixed to the position B and the flap 54 is swinging in the direction of arrow A from the position C to the position D, the flaps 52, 5
When the swing No. 4 is selected, the flap 54 continues the swing at the same swing speed. Further, the flap 52 starts a high-speed swing in the direction of arrow A.

Thus, as shown in FIG. 9B, the flaps 52 and 54 have the same position and moving direction near the position E, and from this position the flap 52 moves at a normal swing speed. Is started, and the flaps 52 and 54 are swung synchronously.

As described above, in the air conditioner 10 applied to the present embodiment, when swinging both the flaps 52 and 54, the positioning is performed while moving both the flaps 52 and 54, and then the synchronization is performed. Since the swing is made, when the swing is instructed, the flaps 52, 54
Are not stopped even if the positions are different.

Therefore, when the swing of the flaps 52, 54 is selected, the operation of the flaps 52, 54 does not cause a sense of incongruity due to being temporarily different from the instruction, and the synchronized swing is started quickly. can do.

In the present embodiment, the driving speed of the flap motor 78 is set to two steps, that is, a normal swing speed and a faster swing speed. However, the drive speed is set to two or more steps, and the positions of the flaps 52 and 54 are set. May be changed according to the speed. As a result, smoother positioning can be achieved.

In the embodiment, the positioning is performed by swinging the flap at the fixed position at a high speed. However, the flap at the fixed position is driven at a normal swing speed, so that the flap during the swing is moved. The moving speed may be temporarily increased. Thus, it is possible to prevent a sense of incongruity that the stopped flap moves fast, and to smoothly move the flap.

The air conditioner 1 applied to the present embodiment
0 does not limit the configuration of the air conditioner to which the present invention is applied, and the present invention can be applied to an air conditioner provided with a plurality of outlets that can individually operate flaps.

[0085]

As described above, according to the present invention, when the driving speed of the flap motor for operating the flap is set to at least two steps, when the two flaps are synchronously swung, one of the flaps is swung. It is not necessary to stop even temporarily, so that it does not cause discomfort. Further, according to the present invention, an excellent effect that both flaps can be swung smoothly and quickly in synchronization with each other can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an air conditioner applied to the present embodiment.

FIG. 2 is a schematic configuration diagram illustrating a refrigeration cycle of the air conditioner.

FIG. 3 is a block diagram illustrating a schematic configuration of an electric circuit of the indoor unit.

FIG. 4 is a schematic configuration diagram in the vicinity of an outlet of the indoor unit, schematically showing movement of a flap provided in the indoor unit.

FIG. 5 is a functional block diagram for controlling a flap according to the present invention.

FIG. 6 is a flowchart illustrating an example of the flow of flap control.

FIG. 7 is a flowchart illustrating an example of individually operating flaps.

FIG. 8 is a flowchart illustrating an example when a synchronous swing is performed.

FIGS. 9A and 9B are schematic configuration diagrams illustrating an example of movement of a flap according to the flowchart of FIG. 9;
(A) shows the state before the start of the swing, and (B) shows the state in which the flaps have been aligned when the synchronous swing is started.

[Explanation of symbols]

 Reference Signs List 10 air conditioner (air conditioner) 12 indoor unit 42 decorative panel 48, 50 outlet 52, 54 flap 58 control board 74 microcomputer (position determination means, flap control means) 78 (78A, 78B) flap motor 100, 102 drive section 104 , 106 position determination unit (position determination unit) 108 comparison unit (position determination unit) 110 flap control unit (flap control unit)

Claims (3)

[Claims] 1. A flap that is rotated in a predetermined range is provided at each of two outlets, and the direction of air-conditioning air blowing is set for each outlet by individually rotating each flap. A flap motor provided for each of the flaps, being rotatably driven to rotate the flap within a predetermined range, and capable of stopping at an arbitrary rotation position; and Position determining means for determining the position of each flap to be rotated; and changing a rotation speed between the flap motors when a swing for rotating each of the flaps within the predetermined range is selected. After changing the rotation speed between the flaps to start the swing, the rotation speed of the flap motor is determined based on the determination result of the position determination means. And flap control means for causing the flaps to swing at the same predetermined rotation speed by making the flaps coincide with each other. 2. The flap control means causes one of the flaps to swing at the predetermined rotational speed,
The air conditioner according to claim 1, wherein the rotation speed of the other flap is set to be higher than the predetermined rotation speed. 3. When one of the flaps is fixed at a predetermined position and the other is swinging, the flap control means rotates the fixed flap faster than the swinging flap. The air conditioner according to claim 1 or 2, wherein the swing is started by (1).