JPH0599493A - Air conditioner - Google Patents

Abstract

PURPOSE:To introduce an air conditioner in whose operation the indoor apparatus detects the location of the user and its direction automatically and sends conditioned air to the detected user, detects the user within a short period of one stroke in the reciprocating movement of an air-directing wane while conditioned air is being sent, and stops the reciprocating movement of the air-directing wane instantly after the detection of the user and instantly sends air toward the detected user CONSTITUTION:In the indoor apparatus 1 of an air conditioner a human body detector 3 is attached to the turning shaft of an air-directing wane 2 which determines the direction in which the conditioned air is sent. First the direction of the conditioned air determined by the air-directing vane 2 and the direction in which the human body detector 3 senses the user are made to agree and then a motor 4 is turned on to drive the air-directing wane 2. The apparatus is provided with a control circuit which, on the basis of a detection signal from the human body detector 3, acts to stop the turning of the air-directing vane 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises an indoor unit and an outdoor unit.
The present invention relates to an air conditioner that generates and blows conditioned air with controlled humidity, wind speed, and the like. More specifically, the present invention relates to an intelligent air conditioner capable of detecting the presence of a person (user) who is to be air-conditioned in an air-conditioned space and automatically performing an air-conditioning operation in accordance therewith.

[0002]

2. Description of the Related Art As an example of a conventional air conditioner that detects the presence of a user and performs an air conditioning operation, there is a "spot air conditioner" described in Japanese Patent Laid-Open No. 3-39851.
This is because a person detecting means for detecting a person to be air-conditioned is disposed in a blowout duct that can be rotationally driven, and the blowout duct is rotationally driven so that the output of the person detecting means becomes large again. It stops the duct.

According to this, at the time when the person detecting means detects the person to be air-conditioned, the blowing duct is stopped facing the person to be air-conditioned.
The time required for blowing warm air to the user can be eliminated. Further, in a spatial range in which the output of the human detection means is a predetermined value or more, the blowing duct is reciprocated, whereby within the range of the human body width of the person to be air-conditioned,
It can blow cold and warm air.

[0004]

The above-mentioned prior art is intended for a mobile personal air conditioner which is installed close to an air-conditioned person and blows cold or warm air directly to the air-conditioned person. A stationary air conditioner that performs an air conditioning operation is not intended for a system that detects the position of a person to be air-conditioned at a position remote from the air conditioner and performs the air conditioning operation for the person to be air-conditioned.

That is, in order to detect the position of a person to be air-conditioned at a remote position by disposing one person detecting means at the tip of the rotatable blowing duct and rotating the blowing duct. , The person detecting means with high directivity is used, and the blowing duct needs to be rotated up and down, left and right many times, the time required for detecting the position of the person to be air-conditioned becomes large, and quick It is difficult to realize a proper air conditioning operation.

Particularly, as disclosed in the above-mentioned conventional publication, the person detecting means for detecting the reflected light from the person to be air-conditioned by using the combination of the light emitting element and the light receiving element allows the person to be air-conditioned to be located at a remote position. If so, the intensity of the reflected light is reduced and detection becomes difficult. Further, since the air-conditioned person generally does not have a flat shape, irregular reflection occurs, and even if the reflected light due to this irregular reflection is detected, the position detection of the air-conditioned person involves a large error. In addition, the relative ratio between the intensity of reflected light from the person to be air-conditioned and the intensity of reflected light from an object other than the person to be air-conditioned, such as wall surfaces and furniture, decreases, making it difficult to identify the two, and as a result A large error will be involved in detecting the person's position.

Further, since the person detecting means is arranged at the tip of the blow-out duct, it is impossible to arrange a plurality of person detecting means at intervals. For this reason, it is difficult to employ a method in which a plurality of person detecting means are installed separately from each other and the position of the person to be air-conditioned is detected by comparing the output levels of the person detecting means. ..

An object of the present invention is to solve the above-mentioned problems of the prior art and to detect the position of a person to be air-conditioned in a place relatively remote from the air-conditioner in a stationary air-conditioner for air-conditioning the entire living room. Then, it is to provide an air conditioner capable of quickly performing an air conditioning operation for the person to be air conditioned.

[0009]

In the air conditioner according to the present invention, the air conditioner of the stationary type is installed in a horizontally long air blower for blowing air in a planar manner and guides a blown air flow to control the direction of the air blow surface. A person detecting means is installed on the rotation axis of the wind direction plate. That is, the person detecting means can rotate in synchronization with the rotation of the wind direction plate. Giving directionality to the detection direction of the person detecting means,
Only one surface direction can be detected, and the surface direction (hereinafter, sometimes referred to as a detection surface) is made to coincide with the air blowing surface by the wind direction plate.

Further, a plurality of the person detecting means are installed, for example, on both sides of the horizontally long air outlet, etc., isolated from each other, and the output level of each person detecting means is compared and calculated to determine the position of the person to be air-conditioned. An arithmetic means for calculating is provided. Incidentally, instead of installing the whole human detecting means on the rotating shaft of the wind direction plate, a deflecting portion for controlling the detecting direction in the human detecting means, for example, an opening slit for taking in light in the case of an optical detecting means, a collecting portion. Only the part such as the optical lens may be arranged on the rotation axis of the wind direction plate to be rotatable, and the other part may be fixed.

[0011]

In general, the wind direction plate can be reciprocated vertically or horizontally in a cycle of several seconds to 10 seconds, and the blowing surface of the wind direction plate also reciprocates in this cycle. Since the person detecting means is installed on the rotation axis of the wind direction plate, it can be rotated in synchronization with the wind direction plate, and the person detecting means can detect only one surface direction. It is possible to detect the surface direction in which the person to be air-conditioned is present in one way of the reciprocating motion of, that is, within a half cycle time.

Moreover, since the detection surface of the person detecting means and the air blowing surface are made to coincide with each other, the air blowing surface faces the air conditioning target person when the direction of the presence surface of the air conditioning target person is detected. Therefore, if the wind direction plate is stopped at this point, it is possible to immediately blow air to the person to be air-conditioned, without waiting time.
As described above, the presence surface direction of the person to be air-conditioned can be detected in a short time, and the air can be sent to the person to be air-conditioned without waiting time at the time of detection.

Since a plurality of person detecting means are arranged separately from each other and the outputs of the person detecting means are compared and calculated to calculate the position of the person to be air-conditioned in the detecting surface, It is possible to further limit the air blowing direction in the direction of the air-conditioned person. Furthermore, by installing only the deflection portion that controls the directivity of the human detection means on the rotation axis of the wind direction plate,
It is not necessary to reduce the load on the drive device of the wind direction plate and use a flexible output wiring from the person detecting means.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of an air conditioner according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an external appearance example of a main part of an air conditioner as an embodiment of the present invention, that is, an indoor unit constituting an air conditioner and an indoor unit among outdoor units. In FIG. 1, 1 is an indoor unit, 2 is a vertical wind direction plate, 3 is a human body detector, 4
Is a motor, and 5 is a suction grill.

Referring to FIG. The indoor unit 1 blows cold air or hot air in a planar manner from its lower part. Vertical wind direction plate 2
Is a curved plate that guides the air flow by blowing air to determine the vertical angle of the blowing surface, and is generally a set of a plurality of sheets. This is attached to a rotating shaft, and the angle of the blowing surface is determined by the rotation angle.

The human body detector 3 is a detector that detects physical information such as far infrared rays emitted from the human body and outputs a signal indicating this detection, and may be a pyroelectric infrared sensor unit or the like. The human body detector 3 is attached to the rotary shaft. The motor 4 is a motor that rotates the rotary shaft.

A side sectional view of the indoor unit 1 is shown in FIG. 2, the same components as those in FIG. 1 are designated by the same reference numerals. In addition, 6 is a cross-flow fan, 7 is a heat exchanger, and 8 is a left and right wind vane.

In FIG. 2, the intake grill 5 is an air intake port for indoor air. A filter (not shown) is attached to the inside of the filter to prevent inhalation of dust. The cross-flow fan 6 is a fan that sucks indoor air and discharges it.
Intake through the intake port 5, pass through the heat exchanger 7,
That is, the air is discharged toward the upper and lower wind direction plates 2.

The heat exchanger 7 is a portion that absorbs ambient heat or emits heat to the surroundings by passing the heat medium. That is, the indoor air sucked through the suction port 5 is absorbed or given heat when passing through the heat exchanger 7, and is discharged as cold air or warm air.

The left and right air flow direction plates 8 are for guiding the air flow and determining the angle of the air flow in the left and right direction. Similar to the vertical airflow direction plate 2, this is a set of a plurality of flat plates attached to the rotary shaft, and the horizontal angle of the blown air is determined by the rotation angle. Similar to the case of the vertical wind direction plate 2, this is automatically rotated by a motor or the like, or is rotated by manual rotation.
This is arranged in front of the vertical wind direction plate 2 when viewed from the air flow.

That is, the air blowing surface is a plane including the rotating shaft, and the angle formed by the air blowing surface and the bottom surface of the indoor unit 1 is the vertical angle. The angle formed by the air blowing direction on the air blowing surface and the rotation axis is the angle in the left-right direction. The human body detector 3 has a structure in which the detection range is distributed in a plane, and the human body detector 3 is attached to the same rotary shaft as the vertical wind direction plate 2 so that the detection surface matches the air blowing surface.

Next, FIG. 3 shows a specific example of the rotating mechanism of the vertical wind direction plate 2. In FIG. 3, 2 is a vertical wind direction plate, 3 is a human body detector, 4 is a motor, 9 is a rotation angle detector, 10 is a rotation axis, and 11 is an opening. The rotation angle detector 9 is a detector that outputs a signal indicating a rotation angle, and is a rotary encoder or the like. This is attached to the rotation shaft of the motor 4 and detects the rotation angle of the motor 4.

The rotary shaft 10 is a shaft on which the vertical wind direction plate 2 and the human body detector 3 are attached and rotates, and is mechanically coupled to the rotary shaft of the motor 4. Therefore, the vertical wind direction plate 2 and the human body detector 3 are rotated by the motor 4. From the output of the rotation angle detector 9, it is possible to detect the vertical angle of the air blowing surface.

Next, FIG. 4 shows an example of the structure of the human body detector 3. That is, (a) of FIG. 4 is a side sectional view of the human body detector 3,
FIG. 4B is a sectional view of the same as above. The human body detector 3 shown in these drawings detects the presence of a human body by detecting far infrared rays generated from the human body.

The human body detector 3 has a box shape having an opening 11 and has an infrared ray detecting element 12 therein. The interior is painted black so that light is not reflected. The opening 11 is a slit that allows light rays to pass therethrough. The infrared detection element 12 is an element having a characteristic of outputting a signal when infrared light in a predetermined wavelength range is input, and is, for example, a pyroelectric infrared sensor with a chopper.

The opening 11 is formed in the vertical direction, that is, the rotating shaft 10.
Is narrow in the direction perpendicular to
Wide in the direction parallel to. Therefore, the angle of the detection range of the human body detector 3, that is, the range where the incidence of far infrared rays can be detected is
It has a small angle in the vertical direction and a wide angle in the horizontal direction.
Therefore, the detection range of the human body detector 3 is almost distributed in a plane including the rotary shaft 10. In addition to the opening 11,
Alternatively, if a condensing lens (not shown) such as a Frennel lens is used instead, the detection range of the human body detector 3 can be more effectively limited to a narrow width.

FIG. 5 is a block diagram showing an example of the configuration of the wind direction plate control circuit 13 for controlling the rotation angle of the vertical wind direction plate 2. In FIG. 5, the wind direction plate control circuit 13 is A /
D converters 14A and 14B, interface circuit 15A,
15B, an arithmetic unit 16, and a motor drive circuit 17.

The A / D converter 14A is a converter for converting an analog signal from the human body detector 3 into a digital signal, and the A / D converter 14B is a converter for converting the analog signal from the rotation angle detector 9 into a digital signal. Is a converter that converts to. The converted digital signal is input to the arithmetic unit 16 via the interface circuits 15A and 15B. The arithmetic unit 16 is a unit such as a commercially available one-chip microcomputer, which inputs digital data according to a program recorded in advance and performs arithmetic operation and outputs the digital data based on the arithmetic result.

The motor drive circuit 17 receives the control signal of the motor 4 from the arithmetic unit 16 in the form of digital data,
This is an interface circuit that generates a voltage for driving the motor 4 based on this. Here, the operation of the computing unit 16 until the air conditioning target person is detected and the air is blown will be described with reference to the flowchart of FIG.

FIG. 6 is a flow chart showing the operation of the arithmetic unit 16. When a user (person to be air-conditioned) starts the operation of the air conditioner, the calculator 16 rotates the motor 4 via the motor drive circuit 17, and the vertical wind direction plate 2 and the human body detector 3
To start rotating. That is, these rotation angles are changed with time. It should be noted that the initial value of the pre-output value of the human body detector 3 for comparison calculation is set to 0 (above, step (S-1) in FIG. 6).

Then, the arithmetic unit 16 sequentially inputs the output signals of the human body detector 3 (step (S-2)). Then, the computing unit 16 looks at the output level of the human body detector 3 and detects the presence surface direction of the person to be air-conditioned. Hereinafter, description will be made also with reference to the characteristic diagram shown in FIG. 7 (the characteristic diagram showing the relationship between the rotation angle θ of the wind direction plate 2 and the output level of the human body detector 3).

If the rotation angle θ of the wind direction plate 2 is changed with time and the output level of the human body detector 3 exceeds a certain threshold value (step (S-3)), the air conditioning is performed in the vicinity of the rotation angle θ at this time. Judge that the target person exists. Then, the rotation angle at which the output level is maximized is set to the direction in which the person to be air-conditioned is present. That is, when the output of the human body detector 3 changes from increasing to decreasing and becomes equal to or less than the previous value for the first time, it is assumed that the maximum level is detected (step (S-4)), and the rotation angle θ at this point is the air conditioning target. The direction of the person's existence.

At this point, the calculator 16 stops the motor 4 via the motor drive circuit 17. That is, the rotation of the vertical wind direction plate 2 is stopped. If necessary, in consideration of the fact that the rotation angle that gives the above-mentioned maximum level is slightly exceeded at the time when the above value becomes the previous value or less for the first time, the motor 4 is reversed by a small angle and the vertical wind direction plate 2 is rotated. The rotation angle is corrected and stopped (step (S-5)). At this point, the rotation angle of the vertical wind direction plate 2 matches the rotation angle of the human body detector 3 and is in the direction of the presence surface of the person to be air-conditioned, so the air blowing surface is naturally in the direction of the person to be air-conditioned. That is, air is blown toward the person to be air-conditioned.

When the person to be air-conditioned moves in the air-conditioned space, far infrared rays do not enter the human body detector 3 which is stopped,
Since the output level becomes equal to or lower than the certain threshold value (step (S-6)), the calculator 16 causes the motor drive circuit 17 to rotate the motor 4 again to start the rotational driving of the vertical wind direction plate 2 ( Step (S-1)).

The upper and lower limits are set for the rotation angle of the vertical wind direction plate 2, and the rotation direction is reversed when the upper or lower limit is reached. That is, the vertical wind direction plate 2 is reciprocated. The arrival of the upper limit or the lower limit is detected by the output of the rotation angle detector 9. According to this configuration, the vertical wind direction plate 2
The air-conditioning target person's presence surface direction can be detected within the one-way time of the reciprocating operation, and the air can be blown toward the air-conditioning target person without waiting at the time of detection.

Next, in the case of detecting the horizontal angle of the person to be air-conditioned viewed from the air conditioner and automatically rotating the left and right wind direction plate 8 to blow air toward the person to be air-conditioned, the vertical and horizontal directions are set. A specific example of the rotating mechanism of the wind direction plate is shown in FIG. 8 as a perspective view.

As in the case of FIG. 2, the left and right wind direction plates 8 are shown in FIG.
Also in the case of, the airflow direction is arranged in front of the vertical wind direction plate 2. The wind direction plate rotating machine 18 is a rotating mechanism that rotates all the left and right wind direction plates 8 at the same time (for example,
The wind direction plate rotating machine 18 is composed of a piston that engages with all the gears that are coaxially attached to the respective rotation shafts of the left and right wind direction plates 8. By reciprocating the piston, all the gears are passed through. The right and left wind direction plates 8 may be simultaneously rotated in synchronization with each other in the same direction).

In order to detect the rotation angle of the left / right airflow direction plate 8, the rotation axis H of at least one plate of the left / right airflow direction plate 8 is
Mount the rotation angle detector 9. Two human body detectors 3 (3A, 3B) are attached to both sides of the vertical wind direction plate 2 so as to be separated from each other. Here, a configuration example of the wind direction plate control circuit 13 that controls the rotation angle of the left and right wind direction plates 8 is shown in a block diagram in FIG. 9.

In FIG. 9, as in the case of FIG. 5, the computing unit 16 outputs the outputs of the two human body detectors 3A and 3B and the rotation angle detector 9 (for the left and right wind direction plates and for the upper and lower wind direction plates), respectively. A signal is input, the rotation angles of the vertical wind direction plate 2 and the horizontal wind direction plate 8 are calculated based on these signals, and the motor drive circuit 17
To drive the motor 4 and the rotary machine drive circuit 19 to drive the wind direction plate rotator 18.

The rotating machine drive circuit 19 is the motor drive circuit 1
Similar to 7, the control signal of the wind direction rotating machine 18 is input from the arithmetic unit 16 in digital data format, and is an interface circuit for generating a voltage for driving the wind direction rotating machine 18 based on this.

Next, the operation of the computing unit 16 until the horizontal angle of the person to be air-conditioned viewed from the air conditioner is detected and the air is blown will be described with reference to the flowcharts of FIGS. 6 and 10. FIG. 10 shows only the part of the above operation that should be added to FIG.

First, when the direction of the existing surface of the person to be air-conditioned is detected, the vertical wind direction plate 2 is stopped (step (S-
5)), the computing unit 16 has two human body detectors 3A, 3 on the left and the right.
The output signal of B is input (step (t-1)). Then, the output levels of the both are compared and calculated to calculate the horizontal angle of the person to be air-conditioned. In the calculation method, for example, when the human body detectors 3A and 3B are pyroelectric infrared sensors, the output level is inversely proportional to the square of the distance from the heat source. Therefore, the outputs of the left and right human body detectors 3A and 3B are calculated. The ratio of the distances from the left and right human body detectors 3A and 3B to the person to be air-conditioned can be calculated from the level ratio.

Then, from the absolute value of the output level, a table prepared in advance based on the actual measurement value is referred to obtain an approximate absolute value of the distance. Then, the left-right direction angle of the person to be air-conditioned can be calculated from the distance ratio and the absolute distance value (above, step (t-2)). And the arithmetic unit 16 is
The rotation angle of the left and right wind direction plates is calculated based on the left-right direction angle (step (t-3)), the wind direction plate rotating machine 18 is driven via the rotating machine drive circuit 19, and the left and right wind direction plate 8 is moved. Rotate until the rotation angle is reached (step (t-4)).

Until the person to be air-conditioned moves in the air-conditioned space and the output level of the human body detector 3 falls below a certain threshold value (step (S-6)), from (step (t-1)) to ( The operation up to t-4) is repeated. That is, when the person to be air-conditioned moves to the left or right within the blowing surface, the human body detector 3
Since the output level of No. remains above a certain threshold value, the left and right airflow direction vanes 8 can be always directed to the person to be air-conditioned by repeating the operations from (step (t-1)) to (t-4). it can.

When the person to be air-conditioned moves to the outside of the air blowing surface, the output level becomes below the certain threshold value (step (S
-6)), The vertical wind direction plate 2 and the human body detector 3 are rotated until the vertical angle of the person to be air-conditioned is detected (step (S
-1)). According to this configuration, even when the person to be air-conditioned does not exist in front of the indoor unit 1 in the air-conditioned space, the left-right direction angle viewed from the air conditioner of the person to be air-conditioned is automatically detected,
The air can be blown toward the person to be air-conditioned.

As described above, the two human body detectors 3 on the left and right
Instead of the method of comparing the outputs of A and 3B and detecting the right-and-left direction angle viewed from the air conditioner of the person to be air-conditioned, the left and right wind direction plates 8
The human body detector 3 is attached to the rotation axis of the air conditioner, and the left and right airflow direction vanes 8 and the human body detector 3 are made to coincide with each other in the air blowing surface and the detection surface in the same manner as in the case of the vertical airflow direction plate 2 described above. The same effect can be obtained by the configuration in which the target person is rotated until it is detected.

An example of such a configuration is shown in FIG. That is, FIG. 11A is a side sectional view of the embodiment, and FIG. 11B is a perspective view of the embodiment. In these figures, the human body detector 3 is attached to the rotary shaft of the left / right wind direction plate 8 to which the rotation angle detector 9 is attached, instead of one flat plate of the left / right wind direction plate 8. The detection range of the detector 3 is distributed in a plane, and the detection surface includes the rotation axis. The vertical wind direction plate 2 is made of a material that transmits infrared rays so as not to prevent the infrared rays from entering the human body detector 3.

The operation of the computing unit 16 from detecting the horizontal direction angle of the person to be air-conditioned viewed from the air conditioner to stopping the rotation operation of the horizontal wind direction plate 8 is as shown in FIG.
Is exactly the same as in the case of.

Next, as another embodiment, a structure in which the human body detector 3 is attached to the rotary shaft 10 so that the blowing surface has a rotation angle delayed with respect to the detection direction of the human body detector 3 will be described below as a side cross section thereof. The figure will be described with reference to FIG. In FIG. 12, the airflow direction by the vertical airflow direction plate 2 is shifted from the detection direction of the human body detector 3 by a delay angle α and attached to the rotary shaft 10.

That is, when the rotation direction of the rotary shaft 10 is in the direction shown in the figure, the air blow surface arrives after the rotation angle α with respect to the detection direction. The delay angle α is calculated by the calculator 16
From the time when the maximum output level of the human body detector 3 is detected (step (S-4) in FIG. 6) until the vertical wind vane 2 actually stops (step (S-5)). Only the rotation angle of the vertical wind direction plate 2.

However, the operation from the detection of the maximum level to the stop of the vertical wind direction plate 2 is performed only in one rotation direction of the rotary shaft 10 shown in the figure. With this configuration, it is possible to eliminate the error that occurs in the air blowing direction by the rotation angle corresponding to the delay time from the detection of the presence direction of the person to be air-conditioned to the stop of the vertical airflow direction plate 2. Alternatively, in order to eliminate the error, it is convenient to eliminate the time required to return the vertical wind direction plate 2 by the rotation angle.

Next, instead of installing the whole human detecting means on the rotating shaft of the wind direction plate, only the deflecting portion (intake port for taking in infrared rays emitted from the human body) in the human detecting means for controlling the detecting direction is provided. A specific example of a configuration in which the wind direction plate is arranged on the rotation axis to reduce the rotation load will be described below with reference to FIG. 13 as yet another embodiment.

In FIG. 13, (a) is a side view showing the main part of this embodiment, and (b) is a top view. In these figures, the deflection section 20 is a black-painted curved plate having the opening 11 having the shape shown in FIG. It is mounted on the rotary shaft 10 and is rotatable. The infrared detection element 12 is fixed at a position where the far infrared rays incident from the opening 11 can be detected so that the detection range of the far infrared rays becomes the same as that of FIG.

According to this structure, the human body detector 3 can be driven only by the deflection unit 20, the rotational load of the motor 4 can be reduced, and the output wiring from the human detector can be made flexible. There is no need to use things. An example of a structure in which a reflecting mirror is arranged on the rotation axis of the wind direction plate is used as the deflecting portion will be described below as yet another embodiment with reference to FIG.

The reflecting mirror 21 reflects at least far infrared rays. It is attached to the rotary shaft 10 and is rotatable. The human body detector 3 is fixed at a position where the far infrared rays reflected by the reflecting mirror 21 are incident, and the detection range of the far infrared rays is the same as that of FIG. According to this configuration, only the reflecting mirror 21 can be used as the driving portion, the rotational load of the motor 4 is reduced, and it is not necessary to use a flexible output wiring from the person detecting means.

[0056]

As described above, according to the present invention,
The indoor unit of the air conditioner, the rotation axis of the wind direction plate for controlling the planar blowing direction, a human body detector having directivity in the detection direction is attached, and both have a structure in which they rotate synchronously, and the detection direction is
Since the airflow direction of the wind direction plate is matched, the direction of presence of the air-conditioned person is detected within one-way time of the reciprocating motion of the air direction plate, and at the same time as the detection, air is blown toward the air-conditioned person. You can start. Therefore, the presence direction of the person to be air-conditioned can be automatically detected and the air can be blown in that direction within a time of at most several seconds.

Further, the indoor unit is provided with vertical and horizontal airflow direction vanes, and the plurality of human body detectors are arranged so as to be isolated from each other, and a comparison calculation means of detection signals from these human body detectors is provided. If the human body detector is provided so as to rotate in synchronization with each wind direction plate in the vertical direction and the horizontal direction, the air conditioning target person existing outside the front of the indoor unit can be directly subjected to the air conditioning. The target person can be detected and blown.

Further, if an appropriate delay angle is provided between the air flow direction of the wind direction plate and the human body detection direction, it is possible to detect the presence direction of the person to be air-conditioned and then stop the wind direction plate. It is possible to eliminate the error in the air blowing direction due to the delay time.

Further, if only the deflecting portion for determining the directivity of the human body detector is attached to the rotating shaft and only the deflecting portion is rotated, the load on the rotating mechanism is reduced and the output wiring is flexible. You don't have to.

[Brief description of drawings]

FIG. 1 is a perspective view showing an appearance of an indoor unit in an embodiment of an air conditioner according to the present invention.

FIG. 2 is a side sectional view of the indoor unit shown in FIG.

FIG. 3 is a perspective view showing a specific example of a rotating mechanism for a vertical wind direction plate in FIG.

FIG. 4 is a cross-sectional view showing a structural example of the human body detector in FIG.

FIG. 5 is a block diagram showing an example of a control circuit for a vertical wind direction plate.

6 is a flowchart showing the operation of the arithmetic unit in FIG.

FIG. 7 is a characteristic diagram showing a relationship between a rotation angle of a vertical wind direction plate and an output of a human body detector.

FIG. 8 is a perspective view showing a specific example of a rotation mechanism for the left and right wind direction plates.

FIG. 9 is a block diagram showing an example of a control circuit for the left and right wind direction plates.

10 is a flowchart showing the operation of the arithmetic unit in FIG.

FIG. 11 is a cross-sectional view showing a specific example of a rotating mechanism for the left and right wind direction plates.

FIG. 12 is a side sectional view showing an example of a mounting position of a human body detector.

FIG. 13 is a cross-sectional view showing an example of a rotation mechanism of a deflection unit of a human body detector.

FIG. 14 is a cross-sectional view showing an example of a rotating mechanism of a deflecting unit using a reflecting mirror.

[Explanation of symbols]

1 ... Indoor unit, 2 ... Vertical wind direction plate, 3 ... Human body detector, 4 ... Motor, 5 ... Intake grill, 6 ... Cross-flow fan, 7 ... Heat exchanger, 8 ... Left / right wind direction plate, 9 ... Rotation angle detector, DESCRIPTION OF SYMBOLS 10 ... Rotation axis, 11 ... Opening part, 12 ... Infrared detecting element, 13 ... Wind direction plate control circuit, 14 ... A / D converter, 15 ... Interface circuit, 16 ... Arithmetic unit, 17 ... Motor drive circuit, 18 ...
Wind direction rotating machine, 19 ... Rotating machine drive circuit, 20 ... Deflection part,
21 ... Reflector

Claims (8)

[Claims] 1. An air conditioner that includes an indoor unit and an outdoor unit, and generates and blows conditioned air from the indoor unit into an air-conditioned space that is an indoor space, in which the conditioned air from the indoor unit is guided in a vertical direction. Detection of the presence / absence of a person to be air-conditioned, a vertical wind direction plate for turning the vertical wind direction plate to a specific plane direction, a first rotation mechanism for rotating the vertical wind direction plate in the vertical direction to set the vertical plane direction to a specific plane direction. Based on a detection signal from the first person detecting means, the first rotating mechanism that rotates the first person detecting means in synchronization with the vertical wind direction plate, and the detection signal from the first person detecting means. An air conditioner comprising: a first control means for controlling a first rotating mechanism to set the vertical airflow direction plate in a specific vertical plane direction. 2. The air conditioner according to claim 1, wherein the left and right wind direction plates are rotated in the left and right directions by a rotation shaft orthogonal to the rotation axis of the up and down air direction plates, and the left and right wind direction plates are arranged in the left and right directions. A second rotation mechanism that is rotated to set a specific surface direction in the left-right direction, a second person detection unit that detects the presence of an air-conditioned person, and the second person detection unit is the left and right wind direction plate. A second rotation mechanism that rotates in synchronization with the second rotation mechanism;
The indoor unit, and second control means for controlling the second rotation mechanism based on a detection signal from the human detection means to set the left and right wind direction plates in a specific horizontal surface direction. An air conditioner characterized by being made. 3. The air conditioner according to claim 1 or 2, wherein the surface direction of the wind direction plate and the detection direction of the human detection unit are the same in the vertical direction and the horizontal direction. air conditioner. 4. The air conditioner according to claim 1, wherein the left and right wind direction plates are rotated in the left and right directions by a rotation shaft orthogonal to the rotation axis of the up and down air direction plates, and the left and right wind direction plates are arranged in the left and right directions. A second rotation mechanism that rotates to set a specific surface direction in the left-right direction, a first person detection unit including a plurality of person detectors arranged at mutually spaced positions, and the plurality of persons. Second control means for controlling the second rotating mechanism based on the comparison result of the detection signals from each of the individual human detectors to set the left and right wind direction plates in a specific horizontal surface direction;
An air conditioner comprising the above-mentioned indoor unit. 5. The air conditioner according to claim 1, wherein the surface direction of the wind direction plate has a delay angle with respect to the detection direction of the human detection means in each of the vertical direction and the horizontal direction. An air conditioner characterized by rotating both of them in synchronization with each other. 6. The air conditioner according to claim 1, 2, 3, 4 or 5, wherein the person detecting means detects the presence of the person to be air-conditioned by detecting infrared rays emitted by the person to be air-conditioned. An air conditioner comprising means. 7. The air conditioner according to claim 6, wherein the human detection unit detects an infrared ray taken in through the intake port, which limits a spatial range in which the infrared ray is taken in to a certain range. And an air conditioner, wherein only the intake port is vertically and horizontally rotated in synchronization with the wind direction plate. 8. The air conditioner according to claim 6, wherein the person detecting means includes a reflecting mirror that reflects an incoming infrared ray and guides the infrared ray to the detecting portion, and the reflecting mirror is divided into vertical and horizontal directions. An air conditioner characterized by being rotated in synchronization with the wind direction plate.