JP2007101144A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To freely control the direction and speed of an air current from a blowoff port of an air conditioner to provide the favorite air current and comfortableness of a person in a room by improving the position repeatability of arm parts and a vertical air direction changing blade. <P>SOLUTION: The air conditioner 1 is provided with the air direction changing blade 3 for controlling a vertical air direction; a pair of arm parts 4 constituted to hold both end faces of the air direction changing blade; a first motor 7 and a second motor 8 for driving the arm parts and the air direction changing blade; a shaft output transmission mechanism 9 for the second motor, provided at one arm part; and an arm part drive mechanism 10 for driving the arm parts, and a turning limiting mechanism 11 for limiting turning of the air direction changing blade, provided at the other arm part. After moving the arm parts into the predetermined position at the operation start of the air conditioner 1, the air direction changing blade is operated until its turning is limited by the turning limiting mechanism. The mutual influence of fluctuation of the arm parts 4 and vertical air direction changing blade 3 is thereby eliminated to improve the position repeatability of the arm parts and vertical air direction changing blade. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for controlling an up-down direction wind direction change blade in an air conditioner.

  Conventionally, this type of air conditioner includes a wind direction changing blade that controls the wind direction in the vertical direction via a variable movable arm at the air outlet of the air conditioner (for example, Patent Documents). 1).

FIG. 11 shows a conventional air conditioner 1 described in Patent Document 1. As shown in FIG. As shown in FIG. 11, in the air conditioner 1 and the air outlet 2 of the air conditioner, the cross flow fan 12 that is a blower of the air conditioner, the arm part 4, the up-down direction wind direction changing blade 3, and the arm part The first motor 7 for driving, the second motor for driving the wind direction changing blades in the vertical direction, and the shaft output transmission mechanism of the second motor built in the arm portion are constituted. The arm portion 4 is fixed at a free position in the arm portion rotation range by the first motor 7. In addition, the vertical direction wind direction changing blade 3 is connected to the outlet port 2 with respect to the position of the arm portion 4 via the shaft output transmission mechanism built in the arm portion 4 by the second motor. It can be fixed at any position within the range of rotation of the up-down direction wind direction changing blade that can rotate without contacting.
JP 2002-31400 A

  However, in the conventional configuration, since the shaft output transmission mechanism of the second motor is built in the arm portion 4, the rotational torques of the first motor and the second motor interfere with each other, For example, when the arm portion 4 fluctuates, the rotational torque of the first motor 7 is applied to the shaft output transmission mechanism of the second motor, and the vertical direction wind direction change blade 3 fluctuates without driving the second motor. Had the problem of doing.

  Further, when the arm portion 4 and the up-down direction wind direction changing blade 3 are driven by the first motor and the second motor, respectively, the mutual interference of the rotational torques of the first motor and the second motor causes the A large error occurs between the position of the shaft output transmission mechanism built in the arm 4 and the position of the arm 4 or the vertical wind direction change blade 3 recognized by the electronic control device and the actual position. There was a problem that the position reproducibility of both was low.

  Due to this low position reproducibility, the accuracy of the wind direction angle is poor when controlling the air direction of the air conditioner, and the air conditioning of the occupant's preference cannot be obtained. Since a gap is generated between the two, there is a problem of deteriorating the appearance of the air conditioner.

  The present invention solves the above-mentioned conventional problems, in an air conditioner equipped with a wind direction change blade that controls the wind direction in the vertical direction via a variable movable arm at the air outlet of the air conditioner. Improve position reproducibility of arm and vertical wind direction change blades for position control commands for first and second motors from electronic control device that controls the position of arms and vertical wind direction change blades. The direction of the airflow from the air outlet is precisely and freely controlled, providing the airflow and comfort of the occupants' preference, and reducing the gap between the air direction change blade and the air outlet as much as possible when the air conditioner is shut down. Provided is an air conditioner control method that can be surely closed. It is another object of the present invention to provide a control method for an air conditioner that protects a mechanism that transmits a shaft output of a motor to an arm part or a wind direction changing blade by interference of rotational torque.

  In order to solve the above-described conventional problems, an air conditioner control method according to the present invention sandwiches a wind direction change blade for controlling the wind direction in the vertical direction and both end faces of the wind direction change blade at the air outlet of the air conditioner. A pair of arm portions configured as described above, and the arm portion is configured by connecting a first arm portion and a second arm portion, respectively, and a wind direction changing blade for controlling the wind direction in the vertical direction via the arm portion; A first motor and a second motor for driving the arm part and the wind direction changing blade, respectively, an axial output transmission mechanism of the second motor on one of the arm parts, and the other on the other side of the arm part. Electronic control for driving and controlling the arm driving mechanism for driving the arm, the rotation limiting mechanism for limiting the rotation of the wind direction changing blade, the first and second motors, and the blower motor of the air conditioner At the start of operation of the air conditioner After the arm portion is moved to a predetermined position by the first motor drive pulse setting of the slave control device, the wind direction changing blade is moved by the rotation restriction mechanism by the second motor drive pulse setting of the electronic control device. The operation is performed until the rotation is restricted.

  As a result, regardless of the interference of the rotational torque between the first and second motors, the arm portions and the vertical direction wind direction change blades according to the first and second motor position control commands from the electronic control unit, respectively. The position is uniquely determined, and the position reproducibility can be improved. Further, by avoiding simultaneous driving of the first and second motors, the shaft output transmission mechanism built in the arm portion can be protected.

  Further, when closing the wind direction changing blade, the electronic control device is rotated after the second arm portion and the wind direction changing blade are turned to a predetermined angle by setting the second motor drive pulse of the electronic control device. According to the first motor drive pulse setting, the arm portion is moved to the arm portion storage position.

  As a result, regardless of the interference of the rotational torque between the first and second motors, the arm portions and the vertical direction wind direction change blades according to the first and second motor position control commands from the electronic control unit, respectively. The position is uniquely determined, and the wind direction changing blade can be accurately stopped at the closed position.

  The air conditioner control method of the present invention improves the position reproducibility of the arm portion 4 and the vertical direction wind direction change blade 3 with respect to the position control command for the first and second motors, thereby improving the air conditioner outlet. It is possible to freely control the direction and speed of the airflow of the room, provide the airflow and comfort of the occupant's preference, and to accurately stop the airflow direction changing blade at the closed position when the air conditioner is stopped. Therefore, the appearance of the air conditioner can be maintained.

A first aspect of the invention relates to a wind direction changing blade that controls the wind direction in the vertical direction at a blowout port of an air conditioner, a pair of arm portions configured to sandwich both end surfaces of the wind direction changing blade, and the arm portion Is configured by connecting a first arm portion and a second arm portion, respectively, and a wind direction changing blade for controlling the wind direction in the vertical direction via the arm portion, and a first driving the arm portion and the wind direction changing blade, respectively. The motor, the second motor, the shaft output transmission mechanism of the second motor on one of the arms, the arm driving mechanism for driving the arm on the other of the arms, and the wind direction change A rotation restricting mechanism for restricting the rotation of the blades, and an electronic control device for driving and controlling the first and second motors and the blower motor of the air conditioner, and the electronic control device at the start of the operation of the air conditioner Before the first motor drive pulse setting After moving the arm portion to a predetermined position, the arm portion is operated by rotating the wind direction changing blade according to the second motor drive pulse setting of the electronic control device until the rotation is limited by the rotation limiting mechanism. Therefore, the relative position of the up / down wind direction changing blade is uniquely determined, and the position reproducibility can be improved. In addition, when driving at least one of the first motor and the second motor, one of the motors is in a free state, so it is impossible to force the arm drive mechanism and the shaft output transmission mechanism. Does not act and can protect these mechanisms.

  According to the second aspect of the invention, by setting the predetermined position to be different depending on the operation mode, the arm position and the angle of the up / down wind direction changing blade according to the operation mode are given, and the position reproducibility is improved regardless of the operation mode. Can do.

  According to a third aspect of the present invention, when the wind direction changing blade is closed, the second arm drive pulse setting of the electronic control device is rotated so that the angle formed by the second arm portion and the wind direction changing blade is a predetermined angle. Then, by moving the arm part to the retracted position by the first motor drive pulse setting of the electronic control unit, the relative position of the up / down air direction changing blade with respect to the arm part is uniquely determined. It can stop at the closed position with high accuracy.

  In the fourth aspect of the invention, the predetermined angle is an angle formed between the second arm portion generated when the arm portion is set to the predetermined position and the wind direction changing blade, so that the relative position of the up / down air direction changing blade with respect to the arm portion is uniquely determined. Therefore, the up / down wind direction changing blade can be stopped at the closed position with higher accuracy.

  According to a fifth aspect of the present invention, when the air conditioner is powered on, after moving the up-and-down air direction changing blade to either one of the cooling position or the heating position, the up-and-down air direction control blade is stored in the outlet. Regardless of the position of the arm and the up / down air direction changing blade when the power is turned on, the up / down air direction changing blade can be accurately stopped at the closed position.

  In a sixth aspect of the present invention, the first motor and the second motor are stepping motors having a clutch mechanism, and the excessive rotational torque and excessive external force due to the first or second motor are lost. It is possible to protect the arm portion, the vertical direction wind direction change blade, the shaft output transmission mechanism, and the first and second motors.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a block diagram of a control device for an air conditioner according to a first embodiment of the present invention.

In FIG. 1, at the outlet 2 of the air conditioner 1, a wind direction changing blade 3 that controls the wind direction in the vertical direction, a pair of arms 4 configured to sandwich both end faces of the wind direction changing blade 3, The arm portion 4 is configured by connecting a first arm portion 5 and a second arm portion 6 respectively, and the first motor 7 and the second motor 8 that drive the arm portion 4 and the wind direction changing blade 3, respectively, Limiting the rotation of the shaft output transmission mechanism 9 of the second motor 8 on one side of the arm 4, the arm driving mechanism 10 for driving the arm 4 on the other side of the arm 4, and the wind direction changing blade 3. The first motor 7, the second motor 8, and the blower motor 12 of the air conditioner 1 are driven and controlled by the electronic control device 13. Yes. The blowout portion in FIG. 1 has a detailed configuration of a dotted square portion in FIG. 1, and includes first and second motors 7 and 8 and first and second arm portions 5.
, 6, the arrangement of the vertical wind direction changing blade 3, the shaft output transmission mechanism 9, the arm drive mechanism 10, and the rotation limiting mechanism 11 is shown (configuration of Embodiment 1).

About the control apparatus of the air conditioner 1 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. FIG. 2 is a diagram showing the operation of the arm portion 4 and the up / down air direction changing blade 3. When the first motor 7 is rotationally driven, the first arm portion 5 is centered on a fulcrum 9 that is the axis of the first and second motors 7 and 8 via an arm portion driving mechanism 10 (not shown). Operates like the first arm rotation range 14. Simultaneously with this operation, the second arm connected to the first arm 5 moves through the arm drive mechanism 10 in the direction of the outlet opening as shown. The arm drive mechanism 10 is an arbitrary mechanism in which the angle formed by the first arm and the second arm is uniquely determined with respect to the rotation angle of the first arm.

  For this type of actuator drive, an inexpensive stepping motor without a position detection function is used, and the position of each actuator is defined by a motor drive pulse which is a position control command from the electronic control unit 13. However, since the rotation axis of the first motor 7 and the rotation axis of the second motor 8 coincide with each other and the shaft output transmission mechanism of the second motor 8 is built in one of the arm portions 6, When the first arm 7 is rotated via the arm driving mechanism 10 by the driving of the first motor 7, a rotational force is also applied to the shaft output transmission mechanism 9 accordingly to drive the second motor 8. Without it, the up-down direction wind direction changing blade 3 is rotationally driven. Therefore, the arm 4 and the up / down direction wind direction changing blade 3 may not reach the target position even with the determined motor drive pulse. Further, when the first motor 7 and the second motor 8 are driven to rotate simultaneously, the rotational torques of the motors interfere with each other, and an unreasonable force acts on the shaft output transmission mechanism 9.

  Therefore, in order to eliminate such position non-reproducibility and protect the mechanism, at the start of the operation of the air conditioner 1, after moving the arm portion to a predetermined position, the wind direction changing blade 3 is rotated by the rotation limiting mechanism. Control the air conditioner that operates until the movement is restricted.

  The control at the time of changing the up-and-down air direction change blade | wing of this Embodiment 1 from a closed position to a cooling operation position using FIGS. 3-6 is demonstrated. FIG. 3 is a diagram showing a control flow. FIG. 4 shows the position of the arm portion 4 and the angle of the up / down air direction changing blade 3 when the up / down air direction changing blade 3 is in the closed position. FIG. 5 shows the position of the arm portion 4 and the angle of the up / down air direction changing blade 3 when the arm portion 4 is in the cooling position. FIG. 6 shows the position of the arm 4 and the angle of the up / down air direction changing blade 3 when the up / down air direction changing blade is in the cooling position.

First, at the start of the operation of the air conditioner 1, in order to improve the position reproducibility of the arm portion 4, a motor drive pulse is set from the electronic control device 13 to the first motor 7 (301), and the arm portion 4 is shown in FIG. 4. (302). After the arm portion 4 has moved to the reset position, motor drive pulses are set for the first motor 7 for moving the arm portion 4 from the electronic control unit 13 to the arm portion position during cooling shown in FIG. 5 (303). The arm 4 is moved to the arm position during cooling (304). Further, after the arm portion 4 has moved to the cooling position, motor drive pulses are set for the second motor 8 to move the up / down airflow direction changing blade 3 from the electronic control device 13 to the first reset position shown in FIG. 305), the vertical wind direction control wing 3 is moved to the first reset position (306). Since the rotation restriction mechanism 11 is provided at the first reset position, the wind direction changing blade 3 can be reliably stopped at the cooling position shown in FIG.

  On the other hand, the control at the time of changing the up-and-down air direction change blade | wing of this Embodiment 1 from a closed position to a heating operation position is demonstrated using FIG. 4, FIG. FIG. 7 is a diagram showing a control flow. FIG. 8 shows the position of the arm portion 4 and the angle of the up / down air direction changing blade 3 when the arm portion 4 is in the heating position. FIG. 9 shows the position of the arm 4 and the angle of the up / down air direction changing blade 3 when the up / down air direction changing blade is in the heating position.

First, at the start of the operation of the air conditioner 1, in order to improve the position reproducibility of the arm 4, a motor drive pulse is set from the electronic control device 13 to the first motor 7 (701), and the arm 4 is set in FIG. 4. (702). After the arm portion 4 has moved to the reset position, motor drive pulses are set for the first motor 7 for moving the arm portion 4 from the electronic control device 13 to the arm portion position during heating shown in FIG. 8 (703). The arm part 4 is moved to the arm part position during heating (704). Further, after the arm portion 4 has moved to the heating position, a motor drive pulse is set for the second motor 8 to move the up / down airflow direction changing blade 3 from the electronic control device 13 to the second reset position shown in FIG. 705), the vertical wind direction control wing 3 is moved to the second reset position (706). Even in the second reset position, the rotation restriction mechanism 11 similar to the first reset position is provided, so that the wind direction changing blade 3 can be reliably stopped at the heating position shown in FIG.

  As described above, in the present embodiment, since the position reproducibility of the arm part and the vertical direction wind direction change blade for the first and second motor drive pulse settings of the electronic control device can be improved, the air conditioner The direction and speed of the airflow from the air outlet can be freely controlled to provide the airflow and comfort that the user prefers in the operation mode. Further, when one of the first or second motors 7 and 8 is driven, one of the motors is in a freely rotating state, and therefore the second motor 8 is provided in the arm portion 4. An excessive force does not act on the shaft output transmission mechanism 9 so that the shaft output transmission mechanism 9 can be protected.

(Embodiment 2)
Due to the position non-reproducibility described above, the target position is not reached when the vertical wind direction change blade 3 is stored in the closed position, that is, a gap is generated between the outlet and the vertical wind direction change blade 3. Therefore, when the up-and-down air direction changing blade 3 is stored in the closed position, the arm portion 4 is reset after the second arm portion 6 and the up-and-down air direction changing blade 3 are rotated so that the angle is a predetermined angle. By moving to the position, the control of the air conditioner 1 that achieves both uncertain storage and protection of the mechanism is performed.

  Control for changing the up-and-down air direction changing blade 3 of the second embodiment from the cooling position to the retracted position will be described with reference to FIGS. FIG. 10 is a diagram showing a control flow. When the operation of the air conditioner 1 is stopped, in order to ensure the positional accuracy of the up / down air direction changing blade 3, a motor drive pulse is set from the electronic control device 13 to the second motor 8 (1001). Is reset to the cooling position shown in FIG. 6 (1002). Next, the motor control pulse setting for the second motor 8 is performed from the electronic control unit 13 to rotate the up / down air direction changing blade 3 by a predetermined angle x in the direction opposite to the second reset position as shown in FIG. ), The vertical wind direction changing blade 3 is moved by a predetermined angle (1004). Further, a motor drive pulse is set for the first motor 7 for moving the arm 4 to the arm reset position shown in FIG. 4 (1005), and the arm 4 is moved to the arm reset position (1006).

  Here, the predetermined angle x will be described below. In the flow when moving from the storage position shown in FIG. 3 to the cooling position, after the arm 4 is moved (304), the angle y formed between the second arm 6 and the up / down airflow direction changing blade 3 as shown in FIG. Record in advance. Further, since the angle z formed by the second arm portion 6 and the up / down air direction changing blade 3 at the cooling position of the up / down air direction changing blade 3 shown in FIG. 6 is known, the predetermined angle x is the angle y in FIG. 5 and the angle in FIG. Let z be the difference.

On the other hand, the control which stops the up-and-down air direction change blade | wing 3 of this Embodiment 2 from a heating position to a closed position is demonstrated using FIG. FIG. 11 is a diagram illustrating a control flow. When the operation of the air conditioner 1 is stopped, in order to ensure the positional accuracy of the up-and-down air direction changing blade 3, a motor drive pulse is set from the electronic control device 13 to the second motor 8 (1101). Is reset to the heating position shown in FIG. 9 (1102). Next, a motor drive pulse is set from the electronic control unit 13 to the second motor 8 for rotating the up / down airflow direction changing blade 3 by a predetermined angle x in the direction opposite to the second reset position as shown in FIG. 8 (1103). ),
The vertical wind direction changing blade 3 is moved by a predetermined angle (1104). Further, a motor drive pulse is set for the first motor 7 for moving the arm 4 to the arm reset position shown in FIG. 4 (1105), and the arm 4 is moved to the arm reset position (1106).

  Here, the predetermined angle x will be described below. In the flow when moving from the storage position shown in FIG. 3 to the cooling position, after the arm 4 is moved (304), the angle y formed between the second arm 6 and the up / down airflow direction changing blade 3 as shown in FIG. Record in advance. Further, since the angle z formed by the second arm portion 6 and the up / down air direction changing blade 3 at the cooling position of the up / down air direction changing blade 3 shown in FIG. 6 is known, the predetermined angle x is the angle y in FIG. 5 and the angle in FIG. Let z be the difference.

  By determining the predetermined angle x as described above, the reproducibility of the positional relationship between the arm portion 4 and the vertical wind direction changing blade 3 can be ensured, so that the wind direction changing blade 3 and the arm portion 4 are securely placed in the storage position shown in FIG. Can be stored. It can be stopped at the heating position. Further, when one of the first or second motors 7 and 8 is driven, one of the motors is in a freely rotating state, and therefore the second motor 8 is provided in the arm portion 4. An excessive force does not act on the shaft output transmission mechanism 9 so that the shaft output transmission mechanism 9 can be protected.

(Embodiment 3)
In the third embodiment of the present invention, after the air conditioner 1 is turned on, the up-and-down air direction change blade 3 is moved to either the cooling position or the heating position, and then the up-and-down air direction control blade 3 is blown out. It is stored in the mouth 2.

  Thereby, even when the position or angle of the arm part 4 or the vertical wind direction changing blade 3 is not the closed position as shown in FIG. 4 when the power is turned on, the positional relationship between the arm part 4 and the vertical wind direction changing blade 3 is known. Since the storage operation described in the second embodiment is performed after once being moved to the cooling position shown in FIG. 6 or the heating position shown in FIG. 9, the arm portion 4 and the up / down air direction change blade 3 are surely moved to the closed position. Can do.

(Embodiment 4)
The fourth embodiment of the present invention is an air conditioner in which a stepping motor having a clutch mechanism is selected as the first and second motors.

  Thereby, the excessive rotational torque by the 1st motor 7 and the 2nd motor 8, and the excessive force from the outside can be lost, arm part 4, up-and-down direction wind direction change blade 3, arm part drive mechanism 10, The shaft output transmission mechanism 10 can be protected.

  As described above, the control method of the air conditioner according to the present invention includes the arm unit that is variable and movable, the wind direction changing blade that controls the wind direction in the vertical direction via the arm unit, and the electronic control unit. Since it can be reproduced well, it can also be applied to uses such as air conditioners and circulators for vehicle interior control.

The figure which shows the block diagram of the air conditioner in Embodiment 1 of this invention Operational diagram of arm in embodiment 1 of the present invention Flowchart of control method of air conditioner during cooling operation in Embodiment 1 of the present invention Cross section of the air conditioner in the closed position Cross section of the air conditioner when the arm is in the cooling position from the closed position Cross section of the air conditioner when the up / down wind direction change blade is in the cooling position The flowchart of the control method of the air conditioner at the time of heating operation in Embodiment 1 of this invention Cross section of the air conditioner when the arm is in the heating position from the closed position Cross section of the air conditioner when the up / down wind direction change blade is in the heating position Flowchart of control method for air conditioner during cooling operation according to Embodiment 2 of the present invention Flowchart of control method for air conditioner during heating operation according to Embodiment 2 of the present invention Cross section of a conventional air conditioner

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioner 2 Air outlet 3 Vertical wind direction change blade 4 Arm part 5 First arm part 6 Second arm part 7 First motor 8 Second motor 9 Axis output transmission mechanism 10 Arm part drive mechanism 11 Rotation restriction mechanism 12 Crossflow fan for blower 13 Electronic control unit

Claims (6)

At the air outlet of the air conditioner, a wind direction changing blade that controls the wind direction in the vertical direction, a pair of arm portions configured to sandwich both end faces of the wind direction changing blade, and the arm portion is a first arm portion And a second arm portion connected to each other, a wind direction changing blade for controlling the wind direction in the vertical direction via the arm portion, a first motor and a second motor for driving the arm portion and the wind direction changing blade, respectively. Limiting the rotation of the motor, the shaft output transmission mechanism of the second motor to one of the arms, the arm driving mechanism for driving the arm to the other of the arms, and the wind direction changing blade And an electronic control device that drives and controls the first and second motors and the blower motor of the air conditioner, and the first motor of the electronic control device at the start of operation of the air conditioner The arm is predetermined by setting the drive pulse of The air conditioner is configured to operate the wind direction change blade until the rotation is restricted by the rotation restriction mechanism according to the drive pulse setting of the second motor of the electronic control unit. . The air conditioner according to claim 1, wherein the predetermined position varies depending on an operation mode. When closing the wind direction changing blade, after turning the second arm portion and the wind direction changing blade to a predetermined angle by setting the second motor drive pulse of the electronic control unit, The air conditioner according to claim 1, wherein the arm is moved to a retracted position by setting the first motor drive pulse of the electronic control unit. The air conditioner according to claim 3, wherein the predetermined angle is an angle formed between the second arm portion generated when the arm portion is set to a predetermined position and the wind direction changing blade. The up-and-down air direction control blade is stored in the outlet after the up-and-down air direction changing blade is moved to either a cooling position or a heating position when the air conditioner is turned on. The air conditioner according to 1 to 5. An air conditioner characterized in that the first motor and the second motor are stepping motors having a clutch mechanism.

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