JPH0796956B2 - Air conditioner wind direction changing device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an improvement of a wind direction changing device that changes the direction of hot air or cold air blown from a wind outlet of an air conditioner, and more particularly, to simplify its failure. It's about what you're trying to detect.

(Prior Art) Conventionally, as a wind direction changing device of 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 changing the wind direction, the inclination angle of the wind direction changing blade by the rotary motor is appropriately changed to change the wind direction of the wind blown from the air outlet. Are known.

(Problems to be Solved by the Invention) By the way, when controlling the inclination angle of the wind direction changing blade in a plurality of stages (for example, three stages or four stages) by the rotary motor, for example, the reference rotational position within one rotation of the rotary motor is set. In order to detect, a position detection means equipped with a cam member and a micro switch that engages with this and performs ON-OFF operation is provided, and when changing the wind direction changing blade to the required inclination angle, first operate the rotary motor, After starting the operation, time measurement is started for the first time based on the reference rotational position of the rotary motor detected by the position detecting means, and the wind direction changing blade is requested within a period from the start of the measurement to one rotation of the rotary motor. When the time corresponding to the inclination angle has elapsed, the operation of the rotary motor is stopped and the wind direction changing blade is changed to the required inclination angle.

In that case, when a failure occurs in the wind direction change control, such as the rotation motor being locked and being unable to rotate, or the micro switch of the position detecting means malfunctioning, this failure is detected and evoked to the person in the room. However, in general, a mechanism for detecting the failure is separately required, and there is a problem that the price becomes high.

The present invention has been made in view of such points, and in particular,
Attention is paid to the fact that the reference rotational position is detected periodically by the position detecting means for each revolution of the rotary motor during normal operation, and the purpose is to rotate the rotary motor at least once. When the reference rotational position is not detected during the time period, it is determined that the wind direction change control is in failure, so that failure detection can be reliably performed without additionally providing a failure detection mechanism.

(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 blade (10) arranged at the wind outlet (7a) is changed in multiple steps by the rotary motor (15) to change the wind direction of the wind blown out from the wind outlet (7a). The target is a wind direction changing device of an air conditioner that is changed. Then, a rotation position detecting means (2) for detecting a reference rotation position within one rotation of the rotation motor (15).
2) and the rotation motor (15) is operated, and after the operation is started, time measurement is started based on the reference rotation position of the rotation motor (15) detected by the rotation position detection means (22), When the time required to change the wind direction changing blade (10) to the required inclination angle is shorter than the time required for the rotation motor (15) to make one rotation from the start of the measurement, the rotation is performed. The rotating motor (15) is provided with a control means (30) for stopping the operation of the motor (15), and is independent of the change control to the inclination angle of the wind direction changing blade (10) by the control means (30). Of the rotary motor (15) for controlling the rotary motor (15) to operate for at least one rotation of the rotary motor (15), and the above-mentioned during the operation control of the rotary motor (15) by the forced operational means (31). The rotational position detection means (22) When the reference rotational position of the rotary motor (15) is not detected, a failure determination means (32) for determining a failure is provided.

(Operation) According to the present invention, according to the present invention, when the wind direction changing control is normal, the rotary motor (15) is controlled by the control means (30) to start the rotary motor (15) and the position detecting means (22). ), The time measurement is started with the reference rotational position of the rotary motor (15) detected as the reference, and the wind direction changing blade (10)
The operation of the rotary motor (15) is stopped when the time corresponding to the required tilt angle of (1) has elapsed. 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.

Then, the wind direction changing blade (10) by the control means (30).
Irrespective of the change control to the required inclination angle of, the forced position actuating means (31) actuates the rotary motor (15) and the rotary motor (15) makes at least one revolution, the rotary position detecting means (22). ) Does not detect the reference rotational position of the rotary motor (15), the failure determination means (32) determines that there is a failure, so that the rotation motor (15) is locked and the position detection means (22) operates. It can be seen that the inclination angle of the wind direction changing vane (10) cannot be changed due to an abnormality.

When the wind direction changing control cannot be performed due to an abnormal operation of the position detecting means (22), the rotary motor (15) causes the forced operating means (3) to operate.
Since it only rotates due to 1), it does not hinder the air conditioner. Further, when the rotary motor (15) is locked, the rotary motor (15) cannot be rotated even by the drive control by the forced control means (31), but the rotary motor (15) is driven in a short time such as one rotation. Since it is control, there is no problem that the rotary motor (15) is destroyed.

Here, the failure determination is performed by forcibly driving and controlling the rotary motor (15) and detecting that the reference rotational position of the rotary motor (15) is not detected during that time. No separate mechanism is required, failure determination is easy, and there are practically effective effects such as cost reduction.

(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). (1) is a main casing, (2) is an upper part of an internal space (3) formed by the main casing (1). Two indoor heat exchangers arranged on the left and right sides of the center, and (4) is a blower fan arranged between the heat exchangers (2) and (2). The internal space (3) has two heat exchangers (2),
It is partitioned by a partition plate (5) arranged below (2), and a suction passage (6) having a suction port (6a) at the lower end is formed inside the partition plate (5). As shown in FIG. 3, an outlet passage (7) having air outlets (7a) on four sides is formed at the lower end on the outside. Then, the air blown by the blower fan (4) causes the air sucked from the suction port (6a) to flow from the suction passage (6) to the heat exchangers (2), (2) for heat exchange, and then the cold air or the warm air. The air is blown into the room from the air outlet (7a) through the air passage (7).

As shown in FIG. 4, each of the four air outlets (7a) of the air outlet passage (7) has a plurality of stages (for example, five stages) of wind directions blown out from the respective air outlets (7a). The plate-shaped wind direction changing blades (10) for changing to
It is located along a). The wind direction changing blades (10)
Both ends of which are rotatably supported by bearings (11), and the universal joints (1
2) ... and the rod (1) that connects the universal joints (12)
3), (13) and crank (14) are integrally linked. Also, the predetermined wind direction changing blades (10), (10)
In the connection part (corner part of the main body casing (1)) between the
A rotary motor (15) such as a geared motor for changing the inclination angle of the wind direction changing blade (10) is arranged. As shown in FIG. 6, the rotary motor (15) has a pin (16) mounted at a position eccentric to the shaft center of the rotary motor (15).
The crank (14) is rotatably connected via a rod (17) and a second rod (18) rotatably connected to the first rod (17), and rotation of the rotation motor (15). Based on the operation, the crank (14) is rotated 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 the cam member (20) according to the rotational movement of the cam member (20). And a micro switch (21) that is turned on and off by the cam member (20) turning on and off the micro switch (21). The rotation position detecting means (22) is configured to detect the position of (1) as the first reference rotation position and the second reference rotation position within one rotation of the rotation motor (15). 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 feed circuit (23) of the rotary motor (15) is provided with a normally open contact (RY-1) of the relay (RY), and the operation of the relay (RY) is It is controlled by the controller (25) to which the ON-OFF signal of the micro switch (21) is input.

Next, the rotation motor (15) by the controller (25)
The operation control will be described with reference to FIG. 11 based on the flowcharts of FIGS. 9 and 10.

First, in FIG. 11, the positions within one rotation of the rotary motor (15) corresponding to the five-step set inclination angles of the wind direction changing blades (10) are designated as P ₀₀ , P ₀₁ , P ₀₂ , P ₀₃ , P ₀₄ , respectively. In addition, when the inclination angle of the wind direction changing blade (10) is, for example, the reference inclination angle P ₀₀ , when changing this to the second set inclination angle P ₀₂ , in FIG. S ₁
In after starting a relay (RY) motor rotation by ON operation (15), microswitch (21), it is determined whether or not the operated ON in step S _2, the time of the ON operation, i.e. rotating the motor (15 ) the first waiting time YES in rotation reference position of, and starts time measurement by counting the timer at step S _3, the time from the rotation reference position in step S ₄ to the second set angle of inclination P ₀₂ After a lapse of t ₀₂ , the relay (RY) is turned off in step S ₅ to stop the rotation operation of the rotation motor (15), and the operation is ended.

Further, for example, when changing the second set tilt angle P ₀₂ to another set tilt angle (for example, the fourth set tilt angle P ₀₄ ), in FIG. 10, after starting, the relay (RY) is turned on in step S _1. After turning on the rotary motor (15) by turning it on, step S is performed to determine whether the reference inclination angle P ₀₀ has passed.
₂ microswitch (21) determines whether the OFF operating at, it is determined that in the second reference rotational position if OFF operation, to start the time measurement by counting the timer at Step S _3, step if the elapsed time t ₀₀ from the second reference rotational position S ₄ to the reference tilt angle P _00, it is determined to have passed the reference tilt angle P _00.

After that, in step S ₅ , it is determined whether or not the rotary motor (15) is in the first rotation reference position by the ON operation of the micro switch (21). If YES in the first rotation reference position, the step is performed. start the time measured by the timer in S _6, the fourth set tilt angle from the first rotation reference position at step S ₇
After waiting for the time t ₀₄ to P _04, it stops the rotation of the rotary motor (15) by OFF operation of the relay (RY) in step S _8, and ends.

Therefore, according to the control flow of FIGS. 9 and 10, when the inclination angle of the wind direction changing blade (10) is changed, the relay (R
Y) ON control closes the normally open contact (RY-1) to form a power supply circuit (23) and start the rotary motor (15),
When the ON or OFF operation signal of the micro switch (21) of the rotational position detecting means (22) is received for the first time after the operation of the rotary motor (15), that is, the rotary motor (15).
The time t ₀₀ , t ₀₁ , t ₀₂ corresponding to the required inclination angle of the wind direction changing blade (10) within the time required for the rotation motor (15) to make one rotation by starting the time measurement at the reference rotation position of ， T
_The control means (30) is configured to stop the operation of the rotary motor (15) when ₀₃ or t ₀₄ is measured.

Thus, separately from the control flow of FIGS. 9 and 10, the failure determination flow of the wind direction control shown in FIG. 12 is periodically started.

The failure determination flow starts, and in step S ₁ , the rotation motor (15) is drive-controlled regardless of the change control to the inclination angle of the wind direction changing blade (10) by the control means (30), and this rotation is performed. status signal (ON from the motor microswitch in step S ₂ in the state of the drive control (15) (21)
/ OFF signal) from ON state to OFF state or from OFF state to ON
It determines whether the inverted state, in one rotation of the rotary motor (15) is always reverse operation during normal, when the inverted YES signal, it is determined that the normal wind direction control at Step S ₃ .

On the other hand, in the absence of signal inversion in step S ₂ discriminates whether further or set time has elapsed that corresponds to one rotation of the rotary motor (15) in step S _4, when the previous elapsed (NO
Then, the process returns to step S ₂ in consideration that the signal may be inverted thereafter. However, if YES after the set time has elapsed, it is determined that the rotary motor (15) is locked or the position detection means (22) (cam member (20) and micro switch (21)) is abnormal, and step S ₅ Then, it is determined that there is a failure in the wind direction control, and the failure in the wind direction control is lit and displayed on, for example, a remote control device of the air conditioner (A) to urge the person in the room.

Therefore, in the failure determination flow of FIG. 12, the rotational position detection means (steps S ₁ and S ₄ are irrelevant to the rotational position detection means (irrespective of the change control to the inclination angle of the wind direction change blade (10) by the control means (30)). 22) Micro switch (21) ON / OFF
A forced operating means (31) is configured to control the rotary motor (15) to operate for a time required for at least one rotation of the rotary motor (15) whose signal is inverted. Further, by the steps S ₂ and S ₅ of the failure determination flow, the micro switch (21) of the rotational position detecting means (22) is turned on / off during the operation control of the rotary motor (15) by the forced operating means (31). The rotary motor (1
The failure determination means (32) is configured to determine that there is a failure when the reference rotational position of 5) is not detected.

Therefore, in the above embodiment, during normal wind direction control, when the wind direction is changed, after the rotary motor (15) is started, the rotary position detecting means (22) is operated while the rotary motor (22) is operating. When the first or second reference rotational position of the rotary motor (15) is detected by the ON / OFF operation of the micro switch (21), the control means (30) causes the timer to measure the time at each reference rotational position. Started and then
Request inclination angle P ₀₀ of the wind direction changing blades _{(10), P 01, P} 02, P 03
Alternatively, when the time t ₀₀ , t ₀₁ , t ₀₂ , t _03, or t ₀₄ corresponding to P ₀₄ elapses, the operation of the rotary motor (15) is controlled to stop at this point, and the wind direction changing blade (10) requires the required inclination. Angle P ₀₀ ,
It will be positioned at P ₀₁ , P ₀₂ , P ₀₃ or P ₀₄ . As a result, the four outlets (7
a) The direction of the wind blown from… is changed.

On the other hand, separately from (regardless of) the change of the wind direction, the rotary motor (15) is cyclically controlled by the forced operating means (31), and the rotary motor (15) makes one revolution in this operational control state. If the ON / OFF signal of the micro switch (21) does not reverse within the specified time, the rotation motor (15) is locked or the position detection means (22) (cam member (20) and micro switch (21)) is abnormal. It is time, and the failure determination means (32) determines that the wind direction control has failed, and the remote control device or the like lights up the display.

Here, the determination of the failure of the wind direction control uses the operation control of the rotary motor (15) independently of the wind direction control and the presence or absence of the detection of the reference rotation position by the position detection means (22). In addition, it is not necessary to separately provide a failure determination mechanism, and it has a practical effect that it can be constructed at a low cost.

In the above embodiment, when the first or second reference rotational position is detected during the operation of the rotary motor (15) when changing the wind direction, the time measurement is started from this point and the wind direction changing blade (10 ), But the present invention, in addition, the present invention, the rotation position of the rotary motor (15) corresponding to the current inclination angle of the wind direction changing blade (10) before the change of the inclination angle, as a reference rotation position, The present invention can be similarly applied to the one in which time measurement is started at the same time as the rotation motor (15) is started and the operation of the rotation motor (15) is stopped when the time to the required tilt angle has elapsed.

(Effects of the Invention) As described above, according to the wind direction changing device for the air conditioner of the present invention, the wind direction is based on the reference rotational position within one rotation of the rotary motor detected by the rotational operation of the rotary motor and the position detection means thereof. When changing the inclination angle of the change vane to change the wind direction from the air outlet in multiple stages, the failure of the wind direction control caused by the lock of the rotation motor or the abnormality of the position detection means is rotated regardless of the wind direction control. While controlling the operation of the motor, if the position detecting means does not detect the reference rotational position within one rotation of the rotary motor during the operation control, it is determined that there is a failure, so a mechanism for failure determination is separately provided. The failure determination can be easily performed without the need, and there is an effect that the configuration can be inexpensive.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of the present invention. 2 to 12 show an embodiment of the present invention, FIG. 2 is a vertical 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. Blade layout,
FIG. 5 is a perspective view of the universal joint, FIG. 6 is a side view showing a state in which the rotary motor and the wind direction changing vanes are connected, FIG. 7 is a view showing a schematic internal structure of the rotary motor, and FIG. 8 is a rotary motor. 9 and 10 are flow charts showing the tilt angle control of the wind direction changing blades by the controller, FIG. 11 is an explanatory view of normal operation, and FIG. 12 is a failure of the wind direction control. It is a flowchart figure which shows a determination. (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) …… Control means, (31) …… forced actuation means, (32) …… fault determination means.

Claims (1)

[Claims] 1. A wind direction changing vane (10) arranged at a wind outlet (7a) is changed in a plurality of stages by a rotary motor (15) to change the wind direction of the wind blown out from the wind outlet (7a). A wind direction changing device for an air conditioner configured to perform a rotation position detecting means (22) for detecting a reference rotation position within one rotation of the rotation motor (15) and the rotation motor (15). , The rotary motor (1) detected by the rotary position detecting means (22) for the first time after the start of its operation.
Time measurement is started with reference to the reference rotational position of 5), and the time is shorter than the time required for the rotation motor (15) to make one rotation from the start of the measurement and the wind direction changing blade (1).
0) is controlled by the control means (30) for stopping the operation of the rotary motor (15) when the time required to change the tilt angle to the required tilt angle is measured, and the wind direction changing blade (10) by the control means (30). ) Irrespective of the change control to the inclination angle of), forced operating means (31) for controlling to operate the rotary motor (15) for the time required for the rotary motor (15) to make at least one revolution, The forced actuation means (31)
A failure determination means (32) for determining a failure when the rotation position detection means (22) does not detect the reference rotation position of the rotation motor (15) during operation control of the rotation motor (15) by A wind direction changing device for an air conditioner.