JPH03279737A - Air conditioner - Google Patents

Abstract

PURPOSE:To perform an accurate human-body detection in a wide range, by providing an air deflecting means, a connecting means extending downward from the air deflecting means, and a human body detecting means operated in conjunction with the air deflecting means via the connecting means so as to be rotated and reciprocated and to detect human bodies. CONSTITUTION:A human body detecting means 3 is composed of an IR sensor 3a, which senses IR rays, and an IR temperature detecting circuit 3b for converting and amplifying a signal sent from the sensor 3a. A deflector vane driving circuit 7 drives a louver 2 to rotate, and a main controlling circuit 8 controls the driving means 7 on the basis of the signal from the sensor 3a so as to set the louver 2 for an optimum angle of airflow direction. The signal outputted from the sensor 3a is inputted to the IR temperature detecting circuit 3b, where the signal is amplified and converted, before being inputted to the main controlling circuit 8. On receiving the signal from the circuit 3b, the main controlling means 8 performs a blast-controlling function, according to which the driving means 7 drives the louver 2 to rotate through a link rod 5.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air conditioner, and particularly to an air conditioner that can change the direction of air distribution and detects a single human body.

[Prior Art] Fig. 17 is a perspective view of an air conditioner disclosed in, for example, Japanese Unexamined Utility Model Publication No. 63-132231 (hereinafter referred to as the first conventional example), and Fig. 12 is a perspective view of an air conditioner disclosed in Japanese Unexamined Utility Model Publication No. 62-132231 (hereinafter referred to as the first conventional example). A perspective view of an air conditioner disclosed in (hereinafter referred to as a second conventional example),
FIG. 13 is an enlarged perspective view of the human body detection infrared sensor portion of FIG. 12.

First, a first conventional example will be explained using FIG. 1t.

This first conventional example is an air conditioner that detects a human body using an infrared sensor installed in a louver.

This will be explained below.

In Fig. 11, (1) is an air conditioner indoor unit, (
2) is a louver that changes the air blowing direction, (3a,) is an infrared sensor that detects infrared rays radiated by people, (5) is an interlocking rod that links each louver, and (6) is a balloon. Louver (2) is a drive part (not shown)
It is possible to rotate and reciprocate via the interlocking rod (5). The infrared sensor (3a) is horizontally attached to one of the plurality of louvers (2) arranged vertically in the balloon (6), and rotates together with the louver (2). It goes back and forth and detects human bodies. and an infrared sensor (3
When a) detects infrared rays, it changes the direction of the louver (2) and blows air from the air outlet (6) in the direction of the detected person.

Next, a second conventional example will be explained using FIG. 12 and FIG. 13.

This second conventional example is an air conditioner that detects a human body using an infrared sensor disposed directly above the rotation axis of one louver. In Figures 12 and 13, (1)
is the air conditioner indoor unit, (2) is the louver that changes the air blowing direction, (3a) is the infrared sensor, (5) is the interlocking rod, (6) is the air outlet, (+5) is the flap, (+
6) is a window hole, (+7) is a sensor guard (18) with a window hole (16), a louver (2) and an infrared sensor (3a).
), and an infrared sensor (3a) and a louver (2) are arranged in this order on the rotating shaft 1- of the synchronous motor (18) so as to be able to rotate and reciprocate. The louver (2) is connected to a plurality of other louvers (2) by an interlocking rod (5) and interlocks with them to perform similar operations. In addition, an infrared sensor (3) installed on the rotation axis of the louver (2)
When a) detects the infrared rays radiated by the human body, the louver (2) is controlled to change its orientation in the direction of the detection so that the wind is sent in the direction of the nine people.

In addition, 2 examples include JP-A No. 1-1999, . The third conventional air conditioner shown in Publication No. 121646 will be explained with reference to Figs. 14, 15, and 16. In Fig. 2, (1) is an air conditioner (3), and (2) is a louver. , (3a) is an infrared detection sensor that detects infrared rays radiated by the human body, (1g) is a driving means for driving the detection sensor (3a), (7)
is a wind direction control blade drive means that drives the louver (2). The infrared detection sensor (3a) attached to the air conditioner (1) is driven by the driving means (18) to
The direction of the light receiving axis is variable in both the C and D directions.

Next, the operation will be explained. First, in step 1, the direction of the infrared detection means (3a) is changed by the driving means (18). A stepping motor is used as the driving means (18). Next, in step 2, infrared detection sensor (3a)
When detecting infrared rays radiated from two human bodies, in step 3, the signal is first amplified by the amplifying means (3b). The amplified signal is compared with a reference value corresponding to the infrared level of the person-Oita in the determining means (3c) in step 3;
In step 4, it is determined whether the infrared rays have been radiated from a person. For those that do not meet the standard value, the process returns to step 1 and continues human body detection for one round. For those satisfying the reference value, the number of pulses of the stepping motor in the direction in which the human body was detected (4) is stored in step 5. Based on the stored number of pulses, the angle determining means (8a) determines the direction in which the human body was detected in step 6. In step 7, the louver (2) is driven by the wind direction control blade drive means (7) in the direction of the human body detection angle determined by the angle determination means (8a).

Then, air is blown in the direction of the detected human body to intensively air-condition the area where the seven human bodies are present, and after a predetermined period of time, the operation shifts to the primary human body detection operation, and this operation is repeated.

In addition, the technology for detecting two human bodies using a human body detection means that rotates in conjunction with the louver and controlling the rotation range of the louver was developed in Japanese Patent Laid-Open No. 6
2-200126 discloses a technology that detects the temperature distribution state in the room with an infrared sensor that is driven once and controls the air volume, air direction, and air blowing temperature.
I-147243';::° Publication.

[Problem to be solved by the invention l Since conventional air conditioners are configured as described above,
During heating, the temperature of the infrared sensor or the vicinity of the infrared sensor may decrease, causing the sensitivity of the infrared sensor to decrease,
There was a problem that the infrared sensor or circuit could break down if the temperature exceeded its operating limit.

Additionally, when cooling the system, there was the issue of not being able to detect a human body reliably to avoid condensation on the infrared sensor due to cold wind blowing offshore and direct contact with the infrared sensor, or short circuits caused by this.

In addition, in the second conventional example, the synchronous motor and infrared sensor are attached to the intake port in the center of the front panel, which physically interferes with the existing heat exchanger and air path system installed inside the air conditioner indoor unit. Efficient improvements are needed, and since the temperature difference between heating and cooling is large in heat exchangers, the temperature around the infrared sensor is expected to change. In addition, since the infrared sensor outside the synchronous mode is located near the infrared sensor, short-circuit failure may occur due to dust sucked in from the inlet sensor, and sensing may be impaired due to dust covering the infrared sensor or lens. There were problems such as a significant decrease in reliability.5 In addition, in other conventional examples, air is blown directly in the direction of people, creating a drafty feeling that is uncomfortable. Since it only air-conditions the area where there are people, there can be uneven temperatures in the room, and if there are 9 people or people are active, the control described in -1- cannot follow and the air conditioning cannot be tailored to each individual. There were some issues.

This invention was made in order to solve the problems mentioned above. 1) A human body detection means is disposed under the rotating shaft of the wind direction changing means that is not exposed to cold and hot air, and is interlocked with the rotating shaft, thereby facilitating sensing and wide-area detection. We perform highly reliable human body detection,
In addition, the human body detection means can be used in conjunction with the wind direction changing means, and it is an in-cylinder structure without a special drive circuit for the detection means, so it does not interfere with the air path system or heat exchanger, and the existing The purpose is to achieve this without changing the structure of the ventilation mechanism, without affecting the wiring system, etc., and at low cost.

In addition, it is an object of the present invention to obtain an air conditioner that can control the wind direction with a louver and also control the air volume by changing the speed of air blowing by a nozzle fan. In the harmonizer, a wind direction changing means for changing the wind direction; a connecting means extending downward from the wind direction changing means; and a connecting means arranged through the connecting means;
The device is equipped with human body detection means that rotates back and forth in conjunction with the wind direction changing means to detect a human body.

Further, a second air conditioner of the present invention includes a louver, a wind direction control blade drive means for driving the louver so as to be able to rotate and reciprocate, and an infrared detection sensor that detects infrared rays radiated from a human body in conjunction with the louver. An angle determination means that determines the direction in which a person is located based on the signal detected by the infrared detection sensor, and an angle determination means that determines the area to be air-conditioned in a variable speed manner according to the angle detected by the angle determination means, and determines the area to be air conditioned in a variable speed manner on the return trip A rotation speed determining means for determining the optimum rotation of the louver, a blower for sending air, a blower driving means for driving the blower to the blowing speed determining means, and a blower driving means for determining the wind speed of the blower. It is equipped with an air blowing speed determining means.

[Function] The air conditioner according to the invention of claim (1) changes the wind direction of the air conditioner with the wind direction changing means, and the human body detection means disposed via the connecting means extending downward from the wind direction changing means. It rotates back and forth in conjunction with the wind direction changing means to detect a human body.

Further, the air conditioner of the invention of claim (2) uses an infrared detection sensor that rotates and reciprocates in conjunction with a louver, and when it detects infrared rays radiated from a human body on the outward journey, it air-conditions the area in a variable speed manner according to the detected angle. When the louver is reversed and enters the variable speed air conditioning area again on the return trip, the rotational speed of the louver, which was at a constant speed, changes to 1.
Controls the air speed of the air blower.

[Example] Example 1 Embodiment 1 of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram of an air conditioner (hereinafter referred to as the present device) according to the invention of Example 1, and FIG. 1(a) is a perspective view of the present device;
FIG. 1(b) is a plan view, and FIG. 1(c) is a side view.

Fig. 2 is a block diagram showing the wind direction control when a human body is detected, Fig. 3 is a plan view showing the detection angle when this device is installed at an appropriate location indoors, and Fig. 4 is a diagram showing the louver and human body detection means. FIG. 4(a) shows a joint extending downward from the louver, FIG. 4(b) shows a joint glued or screwed to the louver, and FIG. 4(c) shows a U-shaped joint. FIG. 4(d) is a diagram showing means of a joint using a slide and a joint using a belt.

In the figure, the same or equivalent components as in the conventional example shown in h are indicated by the same reference numerals, and in FIG.
It consists of a plurality of louvers (2) installed vertically, and is a means for changing the wind direction of the device. B is a connecting means, which is composed of a joint (4) that connects the louver (2) and the human body detecting means (3), and is connected to the wind direction changing means A and the human body detecting means (3).
3). The human body detection means is disposed via the connection means B, and is configured to rotate and reciprocate in conjunction with the louvers (2).

In addition, (1) is an air conditioner indoor unit equipped with an infrared sensor.
-, (5) is a connecting rod that allows multiple louvers (2) to rotate and reciprocate integrally, (6) is an air outlet, and (7) is a drive unit that controls the wind direction without moving the louvers (2). Step, (8)
is 1:.

It is a control circuit.

In Figure 2, (3a) is an infrared sensor that detects infrared rays, (3b) is an infrared temperature detection circuit that converts and amplifies the signal transmitted from infrared sensor (3a), and infrared sensor (3a) and infrared Temperature detection circuit (3b)
This constitutes a human body detection means (3). (7) is a wind direction control drive circuit (8) that rotationally drives the louver (2), which uses the signal transmitted from the infrared sensor (3a) to control the wind direction control blade drive means (7) to rotate the louver (2) in the optimum wind direction. This is the main control circuit that controls the angle. The output signal from the infrared sensor (3a) is sent to the infrared temperature detection circuit (3b).
), and after being amplified and converted, the output (I1) is input to the control circuit (8). Upon receiving this signal, the main control circuit (8) causes the wind direction control vane driving means (7) to drive and rotate the louver (2) via the interlocking rod (5) according to the air blowing control function.

In Figure 3, (ri is the air conditioner indoor unit), (9
) is the maximum detection angle when the infrared sensor (3a) is rotated and reciprocated in conjunction with the louver (2), (10) is the viewing angle of the infrared sensor (3a), (II) is the human body, (12
) is the wall of the room. The infrared sensor (3a) has a viewing angle (10), and when it is fixed, there is a blind spot where it cannot detect a human body. .

However, as shown in FIG. 3, by making the infrared sensor (3a) rotatable and reciprocating in conjunction with the louver (2), the maximum detection angle (9) is greatly expanded, making it possible to detect a human body in the entire two rooms.

Next, the connecting means in this embodiment will be explained using FIG. 4.

In FIG. 4, four methods of connecting the connecting means B between the louver (2) and the human body detection means (3) in FIG. 1 are illustrated.

(I2) These will be explained below.

tf, in Fig. 4(a), a hole is drilled in the front panel of the air conditioner indoor unit directly below the louver (2), and a joint extending vertically downward from the louver (2) passes through the hole and connects the human body detection means (3). ) is connected by means such as gluing or screwing.

Next, in FIG. 4(b), the louver (2), the human body detection means (3), and the joint (4) in FIG. 4(a) are shown.
) and then extend the joint (4) vertically downward from the louver (2) by adhesive or screwing, etc., and insert the joint (4) through the hole in the front panel of the indoor unit of the air conditioner directly below the louver (2). The air conditioner indoor unit (1) is connected and installed to the detection means (3) by means of adhesive or screws, etc.
It can be connected after assembly.

Next, in Fig. 4(c), the connection method is the same as that in Fig. 4(b) described in 1-, and the louver (2) is connected by adhesive or screwing. Joint (4)
The air conditioner indoor unit (1) is connected to the human body detection means (3) so as to protrude outward by means such as gluing or screwing, and the air conditioner indoor unit (1) is connected to the human body detection means (3) so as to extend outward.
It can be connected after assembly.

Next, in Fig. 4 (, I), connect the pulley (13) through the joint extending vertically downward from the louver (2) or through the hole in the front panel of the air conditioner indoor unit that is drilled just below the louver (2). The human body detection means (3) is connected by means of adhesive or screws, and the one-shaped joint (4) is vertically connected and arranged by means of adhesives or screws. - (14), and the louver (2) and the human body detection means (3) are indirectly connected and arranged.

Example 2 Embodiment 2 of the present invention will be described below with reference to the drawings.

FIG. 5 is a diagram showing an air conditioner according to the invention of Example 2, FIG. 5(a) is a perspective view of the air conditioner, and FIG. 5(b) is a perspective view of the air conditioner.
is a plan view, and FIG. 5(c) is a side view. Fig. 6 is a block diagram showing each control means of the air conditioner. Fig. 7 is a plan view showing the detection angle when the air conditioner is placed in an appropriate place in the room. Fig. 8 is a block diagram showing the detection angle when a human body is detected. FIG. 9 is a timing chart showing each characteristic, FIG. 9 is a flowchart of the second embodiment, and FIG. 10 is an interrupt flowchart.

In the figure, (1) is an air conditioner indoor unit, (2) is a louver that changes the direction of airflow, and (3) is a human body detection means that detects human bodies.It detects infrared rays radiated from two human bodies and converts them into electrical signals. Directional infrared detection sensor (3a)
and an amplifying means (3b) for amplifying the signal transmitted from this infrared detection sensor, and comparing the signal transmitted from this amplifying means with a reference value corresponding to the infrared level of the person-Oita to determine whether there are two people. Comparison means (3c). (7) is a wind direction control blade driving means, for example, a stepping motor is used to drive the louver (2).
It's hollow. (8) is the main control unit that controls this wind direction control blade drive means. An angle determination means (8a) that uses the signal from the human body detection means (3) as described in 1.
), and the area to be air-conditioned in a variable speed manner according to the angle detected by the angle determining means (8a), and the area is shifted in the direction of a fan-shaped area of ±15 degrees with the angle detected on the return trip as the center (01). When entering the air conditioning area, there is a rotation speed determining means (8b) that determines the optimum rotation speed of the louver (2) described in 1-, and an air blowing speed that matches the rotation speed of the louver (2) determined by this rotation speed determining means. The air blowing speed determination means (8c) determines the air blowing speed. (19) is a blower; (20) is a blower driving means for driving this blower, which receives a rotation signal linked to the louver (2) from the delivery air speed determining means (8c).

Next, the operation of the second embodiment will be explained.

The infrared detection sensor (3a) rotates in conjunction with the louver (2) and detects a human body by detecting the infrared rays radiated by the nine people. When the infrared detection sensor (3a) detects infrared rays, it converts it into an electrical signal and amplifies it (3a).
b). Since the electrical signal transmitted from the infrared detection sensor (3a) is weak, the electrical signal 3 is amplified by the amplification means (3b). The amplified electrical signal is
The comparison means (3c) compares the number of people with a preset reference value corresponding to the amount of infrared rays radiated by each person to determine whether there are two people. Comparison (1G) In the comparison means (3c), if the signal transmitted from the amplification means (3b) is larger than the reference value, it is determined that there is only one person, and the signal is transmitted to the main control section (8). If it is smaller than the basic value, it is determined that there are not 9 people, and the information is not sent to the main control unit (8). The detected signal is sent to the main control unit (8) each time.
and the step of the stepping motor which is the wind direction control blade drive means (7) at that time.

The number of taps is memorized.

In the angle determination means (8a), 9 human body detection means (3)
Rotate 0 degrees, determine the human body detection angle for each number of steps memorized until one human body detection ends, and combine them as one data when one human body detection is completed. 9 Rotation speed determination means (8b)
and the air blowing speed determining means (8c), respectively.

The rotation speed determination means (8b) determines the rotation speed of the louver (2) when the detection direction of the human body detection means (3), which rotates at a constant speed in conjunction with the louver (2), approaches the human body detection angle by a certain angle. The wind direction control blade driving means (7) is controlled so as to return to the original rotational speed when the human body is moved away by a certain angle from the human body detection angle.

In the air blowing speed determination means (8c), when the detection direction of the human body detection means (3), which rotates at a constant speed in conjunction with the louver (2), approaches the human body detection angle by a certain angle, the air blower gradually moves toward the two human body detection angles. The air blowing speed (19) is controlled to be halved, and the wind direction control blade driving means (7) is operated so that the rotational speed gradually returns to the original rotational speed when moving away from the human body detection angle by a certain angle.

Figure 7 is a plan view of the air conditioner indoor unit (+) equipped with this device installed at an appropriate location indoors, where (9) is the maximum detection angle of the detection means, and (9a) is the human body performing variable speed air conditioning. +15 degree fan-shaped variable speed air conditioning area centered on the detection angle, (
In) is the human body detection angle indicating the angle from 0 degrees when a human body is detected, (II) is the human body, and (+2) is the wall of the room. In operation, a human body is detected by the human body detection means (3) which rotates in conjunction with the louver (2). When a human body is detected, +1 centering on the human body detection angle (10)
In the 5 degree variable speed air conditioning area, control is performed to change the air blowing speed and change the rotational speed of the louver (2).

FIG. 8 shows the total infrared detection characteristics with respect to the rotation angle, the air blowing speed characteristics, and the two rotation speed characteristics when one person is detected and when two people are detected. As shown in FIG. 8(a)-1, when the two human body detection means (3) detect a human body, one pulse exceeding the reference value is generated at that angle. Anything that does not meet the standard value will not appear as a pulse. The blowing speed of the blower (+9) is 9 human body detection angle (1) as shown in Figure 8 (a) 2.
Within the variable speed air conditioning area of +15 degrees centered on 0), the air blowing speed is changed slowly and linearly around the four human body detection angles, and outside the variable speed air conditioning area, the air blowing speed is kept at a constant speed. Also, the louver (
The rotational speed of 2) is reduced to half within the variable speed air conditioning area, as shown in FIG. 8(a)-3, and is controlled to constant speed rotation outside the variable speed air conditioning area.

If two people are detected and the difference between the two human body detection angles (10) is less than 30 degrees, two pulses exceeding the reference value are generated at that angle as shown in FIG. 8(b)-1.

In this case, the variable speed air conditioning area (9a) is partially flat. Therefore, the rotational speed of the louver (2) is defined as the variable speed air conditioning area (Ireno θ1-15 to θ, +15, Fig. 8(a)-2).
The rotational speed is controlled so that the shaded area in FIG. 8(b)-2 has the same area as the shaded area in FIG. 8(b)-2. In addition, the air blowing speed of the blower (19) is controlled in the same manner as shown in Figure 8 (a)-1 for 01 from the intersection to the angle of the intersection, and thereafter for O7 as shown in Figure 8 (a)-1. a) Perform the same control as in -1. Outside the variable speed air conditioning area, the blowing speed of the blower (19) and the rotational speed of the louver (2) are both constant.

The algorithm when 'C is realized by the above operation program is shown in Figs.
This will be explained along the flowchart of FIG.

When starting the air conditioner, press the louver (
2) Move the direction to the 0 degree position. and step 9
Then, start rotating the louver (2) back and forth from 0 degrees to 180 degrees.

In this case, the 7 lag F is set to O when a human body is detected in an outward rotation from 0 degrees to 180 degrees, and the flag F is set to 1 when a human body is detected in a return rotation from 180 degrees to 0 degrees.

One human body detection means (
20) (3) also rotates and starts detecting two people.

Immediately after the human body detection means (3) detects a human body, the interrupt process shown in FIG. 10 is started, and the flag is determined in step 27. Then, the data is stored in order from the smallest angle to F-0 if the flag is O in step 28.
If the flag is 1 in step 29, then F=
1 memory.

When the first human body detection is completed, if the first human body detection stage is not fully detecting a human body, return to step 9 and turn on the louver (2) again without operating the variable speed air conditioning. The robot is rotated, and in step 9, the second human body detection is started.

If a human body is detected the first time and data indicating the angle at which the human body was detected is stored in memory, step 1
If the flag is 0, the human body detection angle (10) is determined from the memory area of F-0 at the step entrance, and if the flag is 1, the human body detection angle (10) is determined from the memory area of p=l at step 12. Extract data. Then, the human body detection angle (1
0) is θ.

Check the number of items.

If there is only one data, 01 in step 17.
Control may be performed within a fan-shaped variable speed air conditioning area (9a) of 115 degrees centered at . Therefore, in step 19, whether the direction O that the human body detection means (3) is facing or the variable speed air conditioning area (
9a) Determine whether it is within the range.

0 or within the variable speed air conditioning area (9a), step 2
0 and the air blowing speed as shown in FIG. 8(a)-3, step 21.
The rotational speed is controlled as shown in FIG. 8(a)-2, and outside the 0 or variable speed air conditioning area (9a), the fan speed and rotational speed are set to a constant speed in step 22, and the rotational speed is set to 0 in step 23.
It is determined whether the processing related to 2 has been completed.

Since the number of data is one, the processing has ended.

Finally, in step 25, it is determined whether the louver (2) is in the reversal state of rotation. In this case, if the direction of the human body detection means (3) is O or 180 degrees, step 26
The value of the flag and the direction of the louver (2) must be reversed when reading the data stored in step 9 from the memory, and the process must be returned to step 9. In other cases, simply return to step 9.

In addition, if there is a plurality of data, step 14 selects the variable speed air conditioning area (9a) or ffj for each data.
). All human body detection angles (10)
For each angle; if r゛ is less than a certain angle, it is assumed that only an overlap occurs in the variable speed air conditioning area.3, for example, 7 Om, which is a human body detection angle (10)
and 0□, the closest angle is 0. ,,.

Assuming a -1 fan-shaped variable speed air conditioning area M area (9a) of 115 degrees with the angle at the center, 0□ and 0.
. , , if the difference is less than 30 degrees, the variable speed air conditioning area (9a
) partially overlap.

And if it is not doubled, it is 1 as in the singular case.
Since the detection angle of the human body detection means (3) is linked to the rotation of the louver (2), θ centered on the human body detection angle (10)
. Louvers (2) within a total of 15 variable speed air conditioning areas (9a)
Controls the rotation speed of the motor and the speed of the blower.

In step 19, the direction θ facing the human body detection means (3)
It is determined whether or not the air conditioner is within the variable speed air conditioning area (9a).

Assuming that θ is within the variable speed air conditioning region (9a), (23) the rotational speed is controlled in step 20 as shown in FIG. 8(a)-2, and the air blowing speed is controlled in step 21 as shown in FIG. 8(a)-3. ,0
Outside the variable speed air conditioning area (9a), both the rotational speed and the air blower may be controlled to a constant speed 1α in step 22.

In addition, if it is 7 times −), step 15 calculates the angle On of the intersection of the boundary of the knee region from θ□ and 01.1.1.
Calculate and find. Step 16 compares θ and O4, and if it is smaller than the detection 7.1+angle 0 of the human body detection stage 1 (3) or the angle 0.1 of the variable speed air conditioning area (9a), step 16 is performed.

Control is performed in the area centered on θ□ in the same way as in the case where there is no overlap with I7, and when it is more sensitive than 0 and On
In step 18, control is forcibly performed in a region centered on θme+. At step 19, it is determined whether 0 is within the variable speed air conditioning area (9a), and if 0 is within the variable speed air conditioning area, the rotation speed of the louver (2) is controlled in step 20, and the rotation speed of the blower (19) is controlled in step 20. When the air blowing speed is controlled and the angle is 0 or outside the variable speed air conditioning area (9a), in step 22, the constant rotational speed control of Roots-(2) and the constant air blowing speed control of the blower are performed. Variation (24) Whether the air conditioning areas (9a) overlap or do not overlap, it is determined in step 2'A whether or not the processing related to Oo has been completed.

If the process has not yet been processed, the value of m is counted up in step 24, and the process returns to step 14, where it is repeated until the process is completed. If the processing has been completed, it is determined in step 25 whether it is 0 or how many times. Similar to the case where the number of human body detection angles (10) is one, when θ is 0.180 degrees, the flag and rotation direction are reversed in step 26 and the process returns to step 9. This operation is sequentially repeated for all human body detection angles (10).

In this way, the louver (2) is rotated and reciprocated, and the human body detection means (3) linked thereto detects a human body, stores the direction of existence of one human body in memory, and reverses the louver (2) to detect it on the return trip and on the outbound trip. When facing the same angle again, variable-speed air conditioning is performed by changing the air blowing speed and the rotational speed of the louver (2), achieving fine-tuned, mild air conditioning that is friendly to two people. .

As described above, according to the second embodiment, in the presence area of 9, for example, the rotation speed determining means (8b) uses the louver (2).
The rotation speed of the blower (19) is set to be low, and the blow speed determination means (8c) is set to slow the blow speed of the blower (19).
It is possible to air condition the entire room while providing mild ventilation to people.

Further, in the area where one person is present, the rotation speed determination means (8b) sets the rotation speed of the louver (2) to be slow, and the air blowing speed determination means (8c) sets the air blowing speed of the blower (19) to be high. It is also possible to provide air conditioning that does not make people feel uncomfortable, such as heat or cold, or to provide rapid indoor air conditioning for a single person.

"Effects of the Invention" As described above, in the first embodiment of the present invention, the seven human body detection means are mounted in conjunction with each other under the rotating shaft of the wind direction changing means that is not exposed to cold or hot air, making sensing easier. It is possible to perform accurate and reliable human body detection over a wide range, and because it is linked to the louver, only one infrared sensor is required, and there is no special drive circuit for the human body detection sensor. The structure does not interfere with the air passage system or heat exchanger, and since it can be realized without changing the structure of the existing ventilation mechanism, there is no impact on the wiring system, etc., and it can be realized at low cost. In Embodiment 2 of this invention, the wind direction and air volume are controlled simultaneously depending on the presence or absence of two people and the number of people in the room.It is possible to reduce costs by simply changing the software and without requiring any major physical changes. This allows for more comfortable air conditioning than before.

[Brief explanation of drawings]

FIG. 1 is a diagram of an air conditioner which is a first embodiment of the present invention, FIG. 1(a) is a perspective view of the device, FIG. 1(b) is a plan view, and FIG. 1(c) is a diagram of an air conditioner. FIG. Fig. 2 is a block diagram showing the wind direction control when a human body is detected, Fig. 3 is a plan view showing the detection angle when this device is installed at an appropriate location indoors, and Fig. 4 is a diagram showing the louver and human body detection means. 4(a) is a joint extending downward from the louver, FIG. 4(b) is a joint glued or screwed to the louver, and FIG. 4(c) is a U-shaped joint. Joint, Figure 4 (d
) is a diagram (27) showing means using a pulley and a joint using a belt, respectively. FIG. 5 is a diagram of an air conditioner according to a second embodiment of the present invention, FIG. 5(a) is a perspective view of the air conditioner, and FIG. 5(b) is a perspective view of the air conditioner.
is a plan view, and FIG. 5(c) is a side view. Fig. 6 is a block diagram showing each control means of the air conditioner; Fig. 7 is a plan view showing the detection angle when the air conditioner is placed at an appropriate location in the room;
Fig. 8 is a timing chart showing each characteristic when a human body is detected, Fig. 9 is a control flowchart, Fig. 10 is an interrupt flowchart, Fig. 1I is a perspective view of the first conventional example, and Fig. 12 is a second conventional example. FIG. 13 is an enlarged perspective view of the infrared sensor for human body detection shown in FIG. 12, FIG. 14 is a perspective view of the third conventional example, FIG. 15 is a control block diagram of FIG. The figure is a flowchart of the third conventional example. In addition, A is a wind direction change means, B is a connection means, (2) is a louver, (3) is a human body detection means, (3a) is an infrared detection sensor, (7) is a wind direction control blade drive means, and (8) is a main body. The control section (8a) is an angle determining means, (8b) is a rotational speed determining means (8c) is a blowing speed determining means, (+9) is a blower, and (20) is a blower driving means (28). In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (2)

[Claims] (1) a wind direction changing means for changing the wind direction of the air conditioner; a connecting means extending downward from the wind direction changing means; and a connecting means disposed below the rotating shaft of the wind direction changing means,
An air conditioner comprising human body detection means that rotates back and forth in conjunction with the wind direction changing means to detect a human body. (2) a louver that changes the direction of air blowing; a wind direction control vane drive means that drives the louver so that it can rotate and reciprocate; an infrared detection sensor that detects infrared rays radiated by a human body in conjunction with the louver; and an infrared detection sensor that detects infrared rays radiated by a human body an angle determining means for determining the direction of a person's presence based on a signal detected by the angle determining means; and determining an area to be air-conditioned in a variable speed manner according to the angle detected by the angle determining means; a rotational speed determining means for determining an optimum rotational speed of the blower; a blower for sending air; a blower driving means for driving the blower in a variable speed; and a blower speed determining means for causing the blower driving means to determine the wind speed of the blower. An air conditioner characterized by having the following.