JPH0339852A - Spot air conditioner - Google Patents

Abstract

PURPOSE:To effectively detect a person to be conditioned by finely rotating a diffusing duct at a predetermined angle when signal output of person detecting means is a set value or more, detecting the top and movement of the person to be conditioned according to variation in the output, and controlling the duct to track the person to be conditioned. CONSTITUTION:A spot air conditioner has an air conditioner body 12 for sucking the air in a room and generating conditioned air, a rotatably diffusing duct 15 for diffusing conditioned air, and duct driving means 2 for rotatably driving the duct 16. Person detecting means 9 has an infrared reflection type sensor including one infrared ray emitting element 1 and one infrared ray detector 1, and is arranged at the end of the duct 16 to detect a person to be conditioned. Drive control means 10 finely rotates the duct 16 in a predetermined angle range + or - theta1 when the signal output of the means 9 is a set value or more, detects the stop and movement of the person to be conditioned according to variation in the output, and controls the duct 16 to track the person to be conditioned. Accordingly, the person to be conditioned can be effectively detected to efficiently control air conditioning.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a spot air conditioner that blows out conditioned air from a blow-off duct to perform local cooling, etc., and in particular changes the direction of the blow-off duct based on a person detection signal from a person detection means. Concerning spot air conditioners to be controlled.

(Prior Art) In general, spot air conditioners for local cooling are being installed in various factories to improve the working environment. This type of spot air conditioner consists of a housing mounted on a wagon that houses a refrigerant circuit equipped with a compressor, condenser, evaporator, and expansion mechanism, as well as a condensing fan and an evaporating fan. The cold air that has undergone heat exchange in the evaporator is blown out toward the operator from a blow-off duct connected to the upper part of the housing, thereby providing local cooling. Furthermore, the above-mentioned blow-off duct is connected to a swing cylinder,
The swing tube is pivoted to the housing by a diametrical pin and is connected to a motor via a linkage. Then, the motor is driven to swing the blow-off duct to ensure cooling over a wide range.

In the above-mentioned spot air conditioner, the blowing duct is configured to drive or stop the motor using a swing switch to switch between a fixed mode and a swing mode.

However, in this spot air conditioner, no consideration is given to the movement of the worker who is the target of air conditioning, and if this worker moves, cold air will be blown in unnecessary directions in the fixed mode, and the air conditioner will is wasted, and the comfort provided by air conditioning is not achieved at all. In addition, in the above-mentioned swing mode, the cold air blowing direction changes regardless of the movement of the worker, so the cold air is only blown intermittently toward the worker, providing sufficient comfort. is not planned.

Therefore, the applicant has developed a spot air conditioner that improves comfort through air conditioning by detecting the person to be air-conditioned using a person detection means and moving the outlet duct to follow the movement of the person to be air-conditioned. Application has been filed (Patent Application No. 63-293)
(See No. 079).

(Problem to be Solved by the Invention) Incidentally, infrared reflective sensors are known as conventional human detection means, but conventional infrared reflective sensors cannot distinguish between people who are subject to air conditioning and objects. When equipped with a tracking function, in order to distinguish between the air-conditioned person and the object, 2
It is necessary to provide two infrared light-emitting elements and one infrared light-receiving element (see Japanese Patent Application No. 1999-82916), and these elements must be installed at an angle, making it difficult to determine the relative angles of these elements. It is.

The present invention has been made in view of the above points, and provides a spot air conditioner that can reliably detect a person to be air-conditioned using an infrared reflective sensor having one infrared light emitting element and one infrared receiving element. The purpose is to

(Means for Solving the Problems) As shown in FIGS. 2 and 3, the present invention provides an air conditioner main body (12) that sucks indoor air and generates conditioned air; a rotatable blow-off duct (''6) that is attached to and blows out the conditioned air, and the blow-off duct (16);
A spot air conditioner is assumed to have a duct drive means (2) ε for rotationally driving the air conditioner.

Therefore, the invention of claim (1) provides 4! shown in FIG. The above-mentioned blow-off duct (16
) is arranged at the tip of the air conditioning unit (9) to detect the person to be air-conditioned, and when the signal output from the person detection unit (9) is received and the signal output exceeds a set value, the air outlet duct (16) a drive control means (10) that slightly rotates the air conditioner by a predetermined angle (±01), detects the stoppage and movement of the person to be air-conditioned based on the change in the signal output, and controls the blow-off duct (16) to track the person to be air-conditioned; ) In the invention of claim (2), the human detection means (9) is disposed at the tip of the blow-off duct (16).

The invention as claimed in claim (3) is a person detection sensor that includes an infrared reflective sensor having one infrared light emitting element and one infrared light receiving element and is disposed at the tip of the air duct (16) to detect a person to be air conditioned. When the signal output from the means (9) and the person detecting means (9) is greater than or equal to the set value, the blowing duct (
16) is further rotated by a predetermined angle (2θ2), and only when the signal output at that time is greater than or equal to the set value, it is determined that a person has been detected, and the above-mentioned blow-off duct (16) is further rotated by a predetermined angle (±01). , a drive control means (10) that detects the stoppage and movement of the person to be air-conditioned based on a change in the signal output, and controls the blow-off duct (16) to track the person to be air-conditioned.

In the invention of claim (4), the drive control means (10) further rotates the blow-off duct (16) by a predetermined angle (2θ2), and when the signal output at that time is greater than or equal to a set value, 1, the determination of human detection is made. Prior to this, the blow-off duct (16) is reversed by a predetermined angle (θ, 2).

(Function) According to the invention of claim (1), when the drive control means (10) receives a signal from the person detection means (9) and the signal output is equal to or higher than a set value, the blowing duct (16) is slightly rotated within a predetermined angle range (±θ1), and the stoppage and movement of the person to be air-conditioned is detected by the change in the above signal output, and the air outlet duct (
16) to track the person to be air conditioned.

According to the invention of claim ('2J), the person detection means (9) is scanned by the duct driving means (2) of the blow-off duct (16).

According to the invention of claim (3), the drive control means (10) receives the signal from the person detection means (9), and when the signal output is equal to or higher than the set value, the blowing duct (16) is further moved at a predetermined angle (2).
θ2), and only when the signal output at that time is equal to or higher than the set value, it is determined that a person has been detected.Furthermore, the above-mentioned blow-off duct (16) is slightly rotated by a predetermined angle (±θ1), and the change in the above-mentioned signal output It detects the stoppage and movement of the person to be air-conditioned, and controls the blow-off duct (16) to track the person to be air-conditioned.

According to the invention of claim (4), when the blow-off duct (16) is further rotated by a predetermined angle (2θ2) and the signal output at that time is greater than or equal to the set value, the blow-off duct (16) is rotated to the predetermined angle before determining whether a person is detected. The blowout duct (16) is reversed by the angle (θ2).
is directed almost toward the center of the body of the person being air-conditioned.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

In Figures 2 and 3 showing the overall configuration of a spot air conditioner, (1) is a spot air conditioner, which is installed in various factories and performs local cooling by blowing cold air to workers and other people subject to air conditioning. It is.

The spot air conditioner (1) is configured to be movable by mounting an air conditioner body (12) on a wagon (11) having casters (11a), and the wagon (11) has an upper part (llb) and a lower part. It is formed in two stages with the section (11c). The air conditioner body (12) is connected to a compressor (12).
a), a refrigerant circuit (12b), an expansion mechanism (not shown), and an evaporator (12c) connected by refrigerant piping
(not shown), the compressor (12a) is installed in the lower part (11c) of the wagon (11), and the compressor (12a) and other parts are installed in the lower part (11c) of the wagon (11). A drain tank (13), an electric box (14), etc. are housed and installed in the housing (15) of the air conditioner main body (12).

The upper part (1l b) of the wagon (11) is provided with the condenser (12b) and evaporator (12c) on both sides of the housing (15), and one motor (12c) in the center part. A condensing fan (12e) and an evaporating fan (121) are connected and housed in 12d). Further, a condensing side exhaust port (15b) is provided on the top plate (t5a) of the housing (15), and a blowout duct (
16) is rotatably attached via the duct driving means (2), and the blowing outlet (16) is formed of a flexible pipe whose wind direction can be changed freely, and the evaporating fan (
121) to the discharge port (12g) of the housing (15).
are communicated via the top plate (15a). and 1
．． The indoor air that flows in from the negative side of the housing (15) due to the drive of both the fans (12e) and (121) exchanges heat with the condenser (12b) and becomes warm air through the exhaust port (1).
5b) while the housing (15)
Indoor air flowing in from the other side undergoes heat exchange in the evaporator (12C) to become cold air, which is then blown out from the blow-off duct (16) toward the person to be air-conditioned.

In addition, (17) is a drain vent provided at the lower part of the evaporator (12C), and is connected to the drain tank (13) to drain the drain of the evaporator (12c).
13).

As shown in FIGS. 4 and 5, the duct driving means (2) is connected to the top plate (1, 5a) of the housing (15).
It is composed of a drive mechanism (4) and a rotation mechanism (5) housed in a casing (3) attached to the casing (3).

Specifically, in FIG. 8, the casing (3) has side walls (31) and (32) on the right half.

A drive mechanism storage section (21) surrounded by (33) is disposed, and a cooperating mechanism storage section (22) surrounded by a substantially semicircular side wall (34) is formed in the left half, The drive mechanism storage section (2
1) and the cooperating mechanism housing part (22) and four mounting boss parts (22a) on the cold air blowing side of the rotating mechanism housing part (22).
, (22b).

In (22c) and (22d), the casing (3
) is attached and fixed to the housing (15).

The drive mechanism storage section (2]) also includes a motor mounting section (21A) to which a duct motor (41) made of a geared motor is attached, an electronic control unit (25), a setting switch plate (26), and a relay harness (27A). ), etc., and the upper side is covered with a hollow cover member (61).

As shown in FIGS. 6 and 7, the inside of the cover member (61) has partition walls (
61a), the motor mounting part (2IA) and the control part (21
Corresponding to B), it is divided into a first chamber (62) as a motor chamber and a second chamber (63) as a control chamber, and a casing (3) Attachment portions (64), (64) for attachment to are provided protrudingly.

In addition, the first chamber (62) of the earthen wall (65) of the cover member (3)
) side part is formed with a plurality of slits (66) as air exhaust ports extending parallel to the partition wall (61a), and the lower part is a wall part on which mounting parts (64), (64) are protruded. The other two walls (61c) and (61b) except for (61b)
d), the air intake port (67), (68) is the exhaust port (1
It is located adjacent to 5b). On the other hand, the earthen wall (
65) on the second chamber (63) side, recesses (6) are formed, and the internal setting switch plate (2) is inserted into the recesses (69).
6) an opening (69a) through which the knob (26a) protrudes;

(69a) has been established.

The upper wall (35) of the casing (3) is provided with an opening (35a) in the front through which the synchronizing mechanism (5) passes, and an inner surface (lower surface) of the upper wall (35). is the rotation mechanism (5
) is formed to protrude slightly downward. The guide wall (36) is close to the opening (35a), is continuous with the front side wall (34), and is connected to the annular shape of the rotation mechanism (5) by the upper end part B of the guide wall (36) and the front side wall (34). It constitutes a guide part (37). (38) is the cover part (
casing (3) to which the mounting part (64) of (61) is attached.
) is the fixed part.

In addition, each of the side walls (31) to (34) and the guide wall (36
) is the lower receiving plate (
A plurality of fixing columns (not shown) for fixing the evaporation fan (121) are formed in series, and the lower receiving plate (23) has an opening (23a) that communicates with the outlet of the evaporation fan (121). is drilled.

The opening (23a) is an opening (35a) in the upper wall (35).
The lower receiving plate (23) has an annular folded piece (23a) bent upward on the periphery of the opening (23a).
23b) is formed in an L-shape.

As shown in FIG. 4, the drive mechanism (4) includes a connecting shaft (42) and a belt transmission mechanism (43) connected to the output shaft (41b) of a duct motor (41). 41), the gear head (41c) is connected to the upper wall (3).
5), and the output shaft (41b) is erected substantially perpendicular to the upper wall (35).

As a result, the first
The chamber (62) is divided into a second chamber (63) by the partition wall (61a).
It is separated from the internal space of the casing (3) in which the rotation mechanism (5) is located by the motor mounting surface (41d). In addition, in Fig. 8, (35b) is the motor mounting hole, and (35b) is the motor mounting hole.
5c) is an electronic control unit mounting hole.

As shown in FIG. 9, the connecting shaft (42) has an output shaft (
41b) with a hexagon socket set screw (44) and a belt transmission mechanism (43).
The timing pulley (46) is slidably divided into two parts, and a boe gauge side shaft (47) into which the timing pulley (46) is slidably inserted.

Lower end protruding shaft portion (47a) of the boob probe side shaft (47)
is vertically supported by the lower support plate (23) via a bearing (48). Therefore, the connecting shaft (42) is supported by only one bearing (48).

Moreover, as shown in FIG. 10, the upper shaft (45) consists of a large diameter part (45a) and a small diameter part (45b).
45a) to the middle of the small diameter part (45b), output ll1
A fitting hole (45c) into which the I (41b) is fitted is provided, and the above fitting hole (45c) is provided from the side end surface (45d) of the small diameter portion (45b).
45c) A notch (45e) is formed that opens downward to the end.

Therefore, the output shaft (
41b) is a set screw (451) that is screwed into the screw hole (451).
44), and the lower shaft (45e) is fixed in the notch (45e).
7) are fitted, and when connecting the upper shaft (45) and the lower shaft (47), the notches (45)
The relationship between e) and the pin member (49) of the idling mechanism (7), which will be described later, constitutes a universal joint mechanism (6) that absorbs the misalignment of the axes of both shafts (45) and (47).

Further, the pulley-side lower shaft (47) is fitted with a flange (47b) at the lower end and is mounted on the belt transmission mechanism (47).
3) timing pulley (46) is fitted. The timing pulley (46) has teeth (46a) formed on its outer circumferential surface and a toothed belt (28) is speckled therein, and a recessed portion on the outer circumference of the lower shaft (47) and inside the timing pulley (46). (47c) and pin members (4) inserted into the top
A compression spring (30) is interposed between the spring seats (two) regulated by the compression spring (30).
The timing pulley (46) is pressed against the flange (47b) of the lower shaft (47) by the spring force of 30), and the timing pulley (46) is slidably fitted to the lower shaft (47), The idling mechanism of the duct motor (41) (
4a) is configured. Note that (27B) is a relay harness.

On the other hand 1. The rotating mechanism (5) is configured by connecting the blowing duct (16) to a rotating cylinder (51) via an elbow (52), and the rotating cylinder (51) has an upper part of the rotating cylinder main body (51a). It is fitted into the annular guide part (37), and its lower part is fitted onto the folded piece (23b) of the lower support plate (23) and supported in the vertical direction.

An annular extension piece (51b) facing the opening (35a) is continuously formed upwardly on the inner periphery of the upper end surface of the rotary cylinder main body (51a), while a band-shaped projection (51
c), teeth (51d) are formed on the lower outer peripheral surface, and the teeth (51d) are connected to the belt transmission mechanism (4).
The toothed belt (28) of 3) is speckled.

Furthermore, the upper part of the rotating cylinder main body (51a) and the casing (
3), there is an upper sliding sheet (53) between the
Lower sliding sheets (54) are interposed between the lower part of the rotary cylinder main body (51a) and the lower support plate (23), and the rotary cylinder main body (51a) is moved by the spring force of the lower support plate (23). It is pressed upward and both the upper and lower end surfaces are sealed.

Further, as shown in FIG. 4, the elbow (52) extends diagonally forward and upward from the rotary tube (51), and its lower end is fitted into the annular extension piece (51b) of the rotary tube (51). At the same time, a blow-off duct (16) is fitted to the upper end.

In addition, the relay harness (27C) is attached to the upper inner peripheral surface of the blow-off duct (16) with bushing rivets (59), (5
9).

Further, as shown in FIG. 4, an angular positioning member (81) is provided on the rear outer circumference of the rotary cylinder main body (51a), and the angular positioning member (81) extends downward. A plurality of convex portions are formed and extend to correspond to the rotation angle of the blow-off duct (16).

On the other hand, the casing (3) has a blowout duct (16).
A photointerrupter (82) constituting a position detection means for detecting the rotational angular position of is attached via a printed circuit board (83). The photointerrupter (82) includes a light emitting element and a light receiving element arranged side by side with a predetermined space therebetween;
A blowout duct (
16) allows the convex portion of the angular position portion $-t (81) to pass through. Therefore, when the emitted light of the light emitting element is blocked by the convex part of the angular position member (81), the convex part is detected optically without contact,
The rotation angle position of the blow-off duct (16) is configured to be detected.

Further, a person detection sensor (9), which is a person detection means for detecting a person to be air-conditioned in front, is attached to the upper part of the tip of the air outlet duct (16).
is the directivity angle (±
It consists of one infrared light-emitting element and one infrared light-receiving element having an angle of .theta., and the reflection of the infrared light emitted from the infrared light-emitting element is detected by the infrared light-receiving element. However, in this example, all elements face the same direction, an infrared light emitting element and an infrared light receiving element are arranged above and below, and the directivity is narrow with a directivity angle (±01).

In FIG. 1 showing a control block diagram of the spot air conditioner (1), the human detection signal outputted by the human detection sensor (9) is converted into a digital signal by an A/D converter (74) included in the control unit (73). converted to CPU (75)
is man-powered. Further, the CPU (75) receives the angular position signal output from the photointerrupter (82), and also switches the mode changeover switch to switch the blowout duct (16) between a fixed mode, an automatic swing mode, and a person tracking mode. (76) also outputs a mode signal from CPU (75).
It is now entered into

Further, the control unit (73) is connected to the CPU (75) and is provided with a memory (77) consisting of a ROM that pre-stores program data for realizing the control flow described later and a RAM that stores processing data. It is being

Furthermore, the control unit (73) includes a clockwise rotation drive circuit (78) and a counterclockwise rotation drive circuit (seven) which constitute the drive control means (1o) of the duct motor (41), and an air conditioning control means. (8) The first relay (RYI) that constitutes
and a relay drive circuit (80) for the second relay (RY2) are connected to the CPU (75). The duct motor (41) is driven by drive circuits (78) for clockwise rotation and counterclockwise rotation based on the output signal of the CPU (75).
, (79), while both lz-(RYI) and (RY2) are cPU (75
) is configured to be ON-OFF controlled by a relay drive circuit (8o) based on the output signal of the relay drive circuit (8o). Furthermore,
Both relays (RYI) and (RY2) above set the fan control relay (X1) and compressor control relay (X2) to 0.
The fan motor (12d) and the compressor motor (1, 2h) are configured to be driven under N-OFF control.

Next, the air conditioning IIIJ control operation of this spot air conditioner (1) will be explained based on the control flow shown in FIGS. 12 to 14. Below, the fixed mode in which the outlet duct (16) is fixed facing a certain direction, and the fixed mode in which the outlet duct (16) is fixed facing in a certain direction, and
The automatic swing mode in which the air conditioner 6) automatically swings, and the person tracking mode in which the air outlet duct (16) rotates following the movement of the person to be air-conditioned will be explained in order.

First, the fixed mode will be explained. After the power is turned on, initialization is performed in step ST1. For example, after each flag STF, HKF, and MKF is reset, the process moves to step ST2, and the fan (12e
), (121) and the compressor (12a) are driven.

In other words, the output signal of the CPU (75) causes the relay drive circuit (80) to drive the first and second relays (RYI), (R
Y2) is turned on, fan control relays (X1) and (X2) for compressor control are turned on, and fan motor (1
2d) and the compressor motor (12h) will be driven.

After that, the process moves from step ST2 to step ST3, where the mode is determined, and since the mode is currently set to the fixed mode by the mode changeover switch (76), step ST4
If the duct motor (41) that rotates the blow-off duct (16) is being driven, it is stopped, and then the process moves to step ST5, where the human detection flag, lug (HKF), and incoming detection flag (MKF) are set. ) and various timers (TMI) (7M4
) to reset.

Next, the process moves to step ST6, where the fan (12e), (
121) is stopped, the fan control relay (
After turning on the compressor (12a) and driving the compressor (12a), the process moves to step ST7, and it is determined whether three minutes have elapsed since the compressor (12a) stopped. In other words, in order to prevent the compressor (12a) from starting and stopping continuously, once it is stopped, it is not restarted for 3 minutes, and if 3 minutes have not elapsed, step S
The process moves from T7 to step ST8, and returns to step ST3 with the compressor (12a) in a stopped state, while if 3 minutes have elapsed, the process moves from step ST7 to step ST9.
If the compressor (12a) is stopped, the compressor control relay (X2) is turned on and the compressor (12a) is stopped.
is driven and the process returns to step ST3.

Then, the operations from step ST3 to step ST9 are repeated, and cold air is always blown in a fixed direction.
At this time, since the blow-off duct (16) is a flexible vibrator, the blow-off direction must be manually set by an operator or the like by appropriately curving the blow-off duct (16).

Next, the automatic swing mode will be explained. After the power is turned on, it operates in the same way as the fixed mode from step ST1 to step ST3. In step ST3, the mode changeover switch (76) is set to the automatic swing mode. Therefore, determine this automatic swing mode and proceed to step 5TIO.
Then, the duct motor (41) is driven to reciprocate the blow-off duct (16).

Thereafter, the process moves from step ST9 to step ST3, operates in the same manner as in the fixed mode up to steps ST8 and ST9, and then returns to step ST3. Then, by repeating the above-described operation, the blow-off duct (16) automatically vibrates its head and blows cold air into the air-conditioned area (100 degrees in this example).

Next, the person tracking mode will be explained. So, first of all,
The signal processing operation of the human detection sensor (9), which is the basis for controlling the direction of the blow-off duct (16), will be explained based on the control flow shown in FIG. 15.

When the process starts, first, in step 5T101, the blow-off duct (16) is driven, and then in step 5T102, it is determined whether the output (H) of the human detection sensor (9) is greater than or equal to a set value (Hsz).

If it is equal to or greater than the set value (H92), it is determined in step 5T103 that a person has been detected. If it is not higher than the set value (HS2),
It is determined that the person subject to air conditioning does not exist, so step 5
Return to T101.

Subsequently, after determining whether a person has been detected in step 57103, the air outlet duct (16) is moved from (+01) to (
-θ1), and in step 5T105 (+
It is determined whether the output (H) of the human detection sensor (9) at time θ1) is greater than or equal to a set value (Hs+). Setting value (Hs
+) or more, continue at step 5T106 to set (-0
1), the output (H) of the human detection sensor (9) reaches the set value (H
S+) or more is determined. However, if it is not equal to or greater than the set value (Hs r ) in step 5T105,
A part of the body of the person being air-conditioned that would have been present if the system had stopped is not present on the right side.

Therefore, it is determined that the person has moved to the left, so in step 5T107 it is determined that the person has moved to the left, and in step 5T107, it is determined that the person has moved to the left.
At T108, the blow-off duct (16) is rotated counterclockwise to perform a person tracking operation.

On the other hand, if the output of the human detection sensor (9) is equal to or greater than the set value at (-θ1) in step 5T106, it is determined that the person is stationary, so return to step 5T103, and if the output is not equal to or greater than the set value, In step 5T109, it is determined that the air conditioning operator has moved to the right, and in step 5TIIO, the blow-off duct (16) is rotated clockwise to perform a person tracking operation.

Here, the judgment of whether the person to be air conditioned should stop, move to the left, or move to the right is as follows:
If the air-conditioned person is stopped due to slight movement of the blow-off duct (16), as shown in Fig. 16, (101) to
The output exceeds the set value in the range of (-01), but if the person subject to air conditioning moves to the right, as shown in Fig. 17, the output will exceed the set value.
- The output becomes lower than the set value on the I) side. Furthermore, when moving to the left, as shown in FIG. 18, the output becomes lower on the (101) side. This state is utilized to identify the direction of movement of the person to be air-conditioned.

Next, the control operation in the human tracking mode based on the signal processing operation of the human detection sensor (9) described above will be explained with reference to FIGS. 12 to 14.

First, after turning on the power, step STI to step ST3
In step ST3, the mode changeover switch (76) is set to the human tracking mode, so this human tracking mode is determined and the process moves to step 5T11, where the human detection flag is set. (HKF
) is “0” or not. Since the human detection flag (HKF) is reset when the power is turned on, the process moves to step 5TI2, and the human detection sensor (HKF) described above is reset.
) is outputting a human detection signal, and if human detection is not determined in step 57103 described above, proceed to step 5713, and if human detection is determined in step 57103, proceed to step I will move on to 5T30.

Therefore, when the person subject to air conditioning is not detected (see Figure 13)
, the incoming detection operation is started in step 5T13, and the process moves to step 5T14, where it is determined whether or not the incoming detection flag (MKF) is "0". Then, this incoming detection flag (MK
F) is reset when the power is turned on, etc., so the process moves from step 5T14 to step 5TI5, and the second timer (
7M2) and move to step 5T16, and the second
The timer (7M2) has a preset short-term standby time (t2).
) has elapsed, and this short-term waiting time (t
Step 5T from step 5T16 until 2) has passed.
It will move to 17th. And this step 5T17
In addition to performing a short-term standby operation, a search operation for a person to be air-conditioned is performed. That is, in step 5T17, the duct motor (41) is driven to cause the blow-off duct (16) to vibrate in the same manner as in the automatic vibrating mode described above.

Next, the process moves to step 5718, and both fans (12e)
, (121) are stopped, they are driven, and the process moves to step 5T19, in which the compressor (12a) is turned on and off in order to prevent the compressor (12a) from continuously starting and stopping, as in step ST7 described above.
It is determined whether 3 minutes have passed since the stop of a). After 3 minutes, the process moves to step 5720, and if the compressor (12a) is started or being driven, it continues to be driven, and before 3 minutes have passed, the process moves to step 5T21. Then, the process returns to step ST3 with the compressor (12a) stopped.

Then, step 5TII to step 5T2 described above.
The operations up to step 1 will be repeated. Specifically, the short-term standby time (t2) is set to, for example, 5 minutes,
If the person detection sensor (9) does not detect a person to be air conditioned, the compressor (12a) and fan (12e), (121)
While blowing cold air, wait for 5 minutes for the person to be air-conditioned to enter the air-conditioned area, and at the same time open the blow-off duct (16
) to search for the person to be air-conditioned within the air-conditioned area.

Thereafter, if the person to be air-conditioned cannot be detected before the short-term standby time (t2) has elapsed, the process moves to a long-term standby operation, and first, the process moves from step 5T16 to step 5T22, where the duct motor (41) is stopped and the air outlet duct ( 16) is stopped at the center with respect to the air conditioner body (12), the process moves to step 5723, where the fan control relay (X1) and compressor control relay (X2) are turned OFF to stop both fans (12).
e), (121) and the compressor (12a) are stopped.

Next, the process moves to step 5T24, and the second timer (7M2
), the process moves to step 5T25, sets the incoming detection flag (MKF) to "1," moves to step 5T26, increments the third timer (7M3), moves to step 5T27, and sets the incoming detection flag (MKF) to "1". It is determined whether or not the long-term standby time (t3) set in advance by the timer 3 (7M3) has elapsed. Then, the process returns from step 5T27 to step ST3 and repeats the above-mentioned operation until this long-term standby time (t3) has elapsed.
Step 5T25) and step 5T14 return to step 5T22, and the second timer (7M2) does not increment. During this long standby time (t3), the human detection sensor (
9) does not detect the person to be air conditioned and the long-term standby time (t3) has elapsed, the process moves from step 5T27 to step 5728, where the third timer (7M3) is reset, and then the process moves to step 5T29, where the system is brought down. Therefore, when restarting, the power is turned on again, etc., and the control flow starts from step ST1. Specifically, in this long-term standby operation, if the long-term standby time (t3) is set to, for example, one hour, and there is no person to be air-conditioned even after the short-term standby time (t2) has elapsed,
The compressor (12a) and fans (12e) and (121) are stopped to stop blowing or blowing cold air, and the blow-off duct (16) is stopped at the center to wait for the person to be air-conditioned to enter. .

If there is no person to be air-conditioned after one hour, the entire system is stopped and the person to be air-conditioned is detected by the human detection sensor (9).
The compressor (12a) etc. will not automatically start even if the vehicle enters the monitoring area of the vehicle.

Next, in this person tracking mode, the person detection sensor (9)
When outputs a human detection signal, the process moves to step 5T30 through step 5T12, where the human detection establishment operation is started, and the process moves to step 31, where if the duct motor (41) is being driven, the duct motor (41) is stopped. to stop the blow-off duct (16).

After that, proceed to step 5T32, and both fans (12e)
, (121) are stopped, both fans (121) are stopped.
e), after driving (121), the process moves to step 5T33, and this step 5733 is similar to step ST7 described above, in order to prevent the compressor (12a) from starting and stopping continuously, the It is determined whether 3 minutes have elapsed or not, and if 3 minutes have elapsed, the process moves to step 5T34 to start the compressor (12a), or if it is running, continues to drive it and moves to step 5T36. On the other hand, 3
If the minute has not passed, the process moves to step 5T35 and the compressor (12
Step S T 36. while stopping g). will be moved to.

Then, in this step 5T36, each timer (TM1) ~
After resetting (7M4), the process moves to step 5T37, the human detection flag (HKF) is set to "1", the process moves to step 5T38, and after resetting the incoming detection flag (MKF), the process returns to step ST3. Become.

After that, in step 5T11, the human detection flag C
HKF) is standing (step 5T37), the determination is No, and the process moves to step 5T39, where it is determined whether the person movement condition is satisfied, and step 5T110 described above is performed.
In step 5T115, it is determined whether or not a movement signal is output. If the person to be air-conditioned does not move, the process returns to step 5T30, and step ST3. ST
The operations of I1.5T39 and 5T30 to 5T38 are repeated at predetermined timing.

That is, for example, when the person detection sensor (9) detects the person to be air conditioned during the search for the person to be air conditioned in step 5T17, the rotation of the air outlet duct (16) is stopped in step 5T31, and the air outlet duct (16) is is directed toward the person to be air-conditioned, and cold air is blown onto the person to perform local cooling.

Furthermore, during the long-term standby in steps 5T22 to 5T27, if a person subject to air conditioning enters the monitoring area of the human detection sensor (9), the process moves from step 5T12 to step 5T30 as described above, and the compressor (12a) and fan (1
2e) and (121) are driven to blow cold air to the person to be air-conditioned.

Next, a case will be described in which the person to be air-conditioned moves during the above-mentioned human detection establishment operation (see FIG. 14).

First, step 5T108 and step 5TI described above
When the human detection sensor (9) outputs a movement signal at IO, it is determined in step 5739 that the human movement condition is met, and the process moves from step 5T39 to step 5T40, where the first timer (TM1) is incremented. Step 5T41
Then, it is determined whether or not the first timer (7M1') has elapsed a preset delay time (1+), and the process returns to step ST3 until the delay time (t1) has elapsed. This delay time (t1) is set to, for example, 1 second, and when the person to be air-conditioned leaves the monitoring area of the human detection sensor (9) and returns immediately, the blow-off duct (16) is prevented from moving, The status quo is maintained for seconds.

Thereafter, when the delay time (t1) has elapsed, the process moves from step 5T41 to step 5T42, where it is determined whether the person subject to air conditioning has moved to the right or left, and the output of the person detection sensor (9) is determined. Based on the signals, if a rightward movement signal is output in step 5TIIO described above, the process proceeds to step 5T43, and if a leftward movement signal is outputted in step 5T108, the process proceeds to step 5T44.

So, first, let's explain the case of right movement.
In the above step 5T43, it is determined whether or not the blow-off duct (16) has rotated to the right end limit position, and if it has not rotated to the right end limit position, it is possible to rotate in the right direction, so from step 5T43 Proceeding to step 5T45, the duct motor (41) is rotated and the blowout duct (16
) to the right.

Next, the process moves to step 5T46, where the first timer (TM1
), the process moves to step 5T47, the human detection flag (HKF) is reset, and then the process returns to step ST3. Then, since the human detection flag (HKF) is reset, the determination in step STI 1 becomes YES, and after performing the operations of steps 5T30 to 5738 described above, the process returns to step 5T40, and the delay time (t1 ), if the person to be air-conditioned is still moving to the right, proceed to step 5T45 to open the air duct (
16) to the right.

On the other hand, the same applies when the person to be air-conditioned is moving to the left, and the process moves from step 5T42 to step 5T44.
It is determined whether the blow-off duct (16) has rotated to the left end limit position, and if it has not rotated to the left end limit position, the process moves from step 44 to step 5T48, and the duct motor (41) is rotated in the opposite direction. Drive and blow out duct (16
) to the left, move on to step 5T46,
The same operation as in the clockwise rotation described above is performed.

In other words, when the person to be air-conditioned moves from side to side within the air-conditioned area by the blow-off duct (16), the person detection sensor (
9) identifies its direction of movement, steps 5T45 and 5
At T48, the duct motor (41) is rotated forward and backward to rotate the blow-off duct (16) to follow the movement of the air-conditioned person to track the person, and continue to blow cold air to the moving air-conditioned person. It becomes like this.

On the other hand, in steps 5T43 and 5T44, if the air outlet duct (16) has rotated to the right end limit position or the left end limit position, the air outlet duct (16) will remain the same even if the person subject to air conditioning further moves in the same direction. Since it cannot rotate in the direction, the process moves from step 5T43 to step 5T49, and from step 5T44 to step 5T50, and the fourth
Increments the timer (7M4).

After that, from step 49 to step 5T51,
From step 5T50 to step ST 521: the fourth timer (7M4) returns to step ST3 from step 5T51 or step 5T52 until the preset stop time (t4) has elapsed. The blow-off duct (16) remains at each end limit position until the time elapses.

Then, when this stop time (t4) has elapsed, the process moves from step 5T51 to step 5748, and also to step 5T.
52, proceed to step 5T45, and blow out the air duct (16).
is rotated in the opposite direction and the process moves to step 5T46, where the above-described operations are performed.

In other words, if the person to be air-conditioned leaves the edge of the air-conditioned area, there is a high possibility that the person will return from the edge, so the blow-off duct (16) is stopped at each end limit position, and within this stopping time (t4). When the person to be air-conditioned is detected, the process moves from step 5T39 to step 5T30, and the person is tracked as described above.If the person to be air-conditioned does not return, the blow-off duct (16) is rotated in the opposite direction, and as described above. In step 5T12, it is determined whether a human detection signal is output.

After that, after performing the short-term standby operation and search operation (steps 5T13 to 5T21) as described above, the long-term standby operation (steps 5T22 to 5T29) is performed, and if the person to be air-conditioned returns during that time, the person tracking will be performed again. Become.

In the embodiments described above, a person is detected only by determining whether the output of the person detection sensor is equal to or higher than a set value, and therefore a human body (person to be air-conditioned) and a specularly reflecting object cannot be accurately distinguished. Therefore, in order to make this distinction, the following control can be performed.

As shown in FIG. 19, when starting, first, the blowing duct (16) is driven in step 5T201, and then, in step 5T202, it is determined whether the output of the human detection sensor (9) is equal to or higher than the set value HS2. .

If the set value H82 or higher, some kind of reflective object has been detected, so step 5T20B is further performed to determine whether it is a mirror surface or an air conditioner worker (human body).
The blow-out duct (16) is rotated by a predetermined angle of 202 degrees, and in step 5T204, it is determined whether the output of the human detection sensor (9) is continuously equal to or higher than the set value H82, and whether or not the output of the human detection sensor (9) is continuously equal to or higher than the set value HS2. If not, it is determined that there is no reflective object in front of the blow-off duct (16), and the process returns to step 5T201.

In step 5T204, if the set value H92 or more is determined, the reflective object is determined to be the person to be air-conditioned, so in step 5T205, the air outlet duct (16) is reversed by a predetermined angle of 02 degrees, and the air outlet duct (16) is is positioned approximately at the center of the air conditioning worker's body, and it is determined in step 5T206 that a person has been detected. If it is not equal to or greater than the set value H92, it is determined that the reflective object is a mirror surface, and the process returns to step 5T201.

Note that the human body (clothing) and the mirror surface are identified using their directivity. In other words, in the case of a mirror surface,
The directivity angle of the infrared light emitting element and the infrared light receiving element is sharp, and the range in which the output can be obtained is narrow, as shown in Figure 20. However, in the case of a person subject to air conditioning (clothing, etc.), due to the diffused reflection component, as shown in Figure 21. As shown in , the range in which the output can be obtained is widened, and in the case of air conditioner workers, the output of the human detection sensor (9) expands in the angular range exceeding the predetermined value. When the output exceeds the predetermined value, the person detection sensor (9
) is detected, and if the output exceeds a predetermined value at both angular positions, it is determined that the person is an air conditioning worker.

Subsequently, processing steps 5T207 to 5T213 after the determination of human detection in step 5T206 are the same as processing steps 5T104 to 5T110 described above.

In the above embodiment, the human detection sensor (9) is disposed at the tip of the blow-off duct (16), and the duct driving means (
2), the air outlet duct (16) is scanned as the air outlet duct (16) rotates, and when a person is detected, the air outlet duct (16) faces the person to be air-conditioned. The human detection sensor is installed so that it can be rotated regardless of the
Based on the human detection signal from the human detection sensor, the air outlet duct (
The air outlet duct (16) faces the person to be air-conditioned.
The rotation of 6) may be controlled.

In addition, 1. This example is a movable spot air conditioner (1)
However, the present invention may also be applied to a duct type spot air conditioner. Furthermore, the blow-off duct (16) is 2
More than one may be provided, and the blow-off duct (16) may be pivoted by a pin or the like on the housing (15) for rotation.

(Effect of the invention) The invention of claim (1) is such that the drive control means detects the stoppage and movement of the person to be air-conditioned by the change in the signal output from the person detection means due to the slight rotation of the blow-off duct, and responds accordingly. Since the blow-off duct is controlled and the blow-off duct is made to track the person, the person to be air-conditioned can be reliably detected and the air-conditioning control can be performed efficiently. Furthermore, since the human detection means can be configured with one infrared light emitting element and one infrared light receiving element, the structure is simple and costs can be reduced. - Claim (2) Since the person detection means can be scanned by the duct driving means of the blow-off duct, a special scanning means is provided for the person detection means (3X).

The inside of the air-conditioned area can be reliably monitored.

The invention of claim (3) further rotates the blow-off duct by a predetermined angle (2θ2) when the signal output from the person detection means is received and the signal output is equal to or higher than the set value, and when the signal output at that time is equal to or higher than the set value. It is determined that only a person has been detected, and the air outlet duct is further slightly rotated by a predetermined angle (±θ1), and the stoppage and movement of the person to be air-conditioned is detected based on the change in the signal output, and the air outlet duct is controlled. Since the person to be air conditioned is tracked by the air conditioner, it is possible to reliably distinguish between the air conditioner (human body) and the specularly reflecting object.

According to the invention of claim (4), when the blowout duct is further rotated by a predetermined angle (2θ2) and the signal output at that time is greater than or equal to the set value, the blowout duct is rotated by the predetermined angle (θ2) prior to determining whether a person is detected. Since the air conditioner is reversed, the air outlet duct can be directed almost to the center of the air conditioner's body.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a control block diagram of a spot air conditioner, FIG. 2 is a front cross-sectional view of the spot air conditioner, FIG. 3 is a longitudinal side view of the same, and FIG. 4 is a diagram of a duct driving means. 5 is a plan view of the blow-off duct and duct driving means; FIGS. 6 and 7 are a plan view and longitudinal sectional view of the cover member; FIG. 8 is a plan view of the casing; FIG. 10 is a cross-sectional view of the connection structure between the motor and the timing booth, and FIG. 10 is a cross-sectional view of the upper shaft. Figure 11 is an explanatory diagram of the mounting position and directivity angle of the human detection sensor,
FIG. 12 to FIG. 14 are control flow diagrams showing air conditioning processing of the spot air conditioner. FIG. 15 is a control flow diagram showing signal processing of the human detection sensor, and FIGS. 16 to 18 are explanatory diagrams of signal output of the human detection sensor. Fig. 19 is a similar figure to Fig. 15ε for a modified example, and the second
0 and 21 are explanatory diagrams of the signal output of the human detection sensor and sensor in the case of a mirror surface and cloth. 1...Spot air conditioner 2...Duct drive means 9...Person detection sensor (person detection means) 10...
... Drive control means 12 ... Air conditioner main body] 6 ... Blowout duct and 2 others Fig. 2 Fig. 3 Fig. 60 Section 68 1 Atsushi 7 Ran ~ Fig. 8 Fig. 90 Condolences Figure 11, Figure 20, Figure 21, Figure 14

Claims (4)

[Claims] (1) An air conditioner main body (12) that sucks indoor air and generates conditioned air, a rotatable blow-off duct (16) that is attached to the air-conditioner main body (12) and blows out the conditioned air, and the blow-off duct (1
In the spot air conditioner (1) having a duct drive means (2) for rotationally driving the air conditioner (6), a person detection device is provided which detects a person to be air-conditioned, which is comprised of an infrared reflection sensor having one infrared light emitting element and one infrared light receiving element. means (9), and when the signal output of the person detecting means (9) is greater than or equal to a set value, the blowing duct (16) is rotated at a predetermined angle (±θ).
Drive control means (10) that slightly rotates by _1), detects the stoppage and movement of the person to be air-conditioned based on the change in the signal output, and controls the blow-off duct (16) to track the person to be air-conditioned.
A spot air conditioner characterized by having. (2) The spot air conditioner according to claim (2), wherein the person detection means (9) is disposed at the tip of the blow-off duct (16). (3) An air conditioner main body (12) that sucks indoor air and generates conditioned air, a rotatable blow-off duct (16) attached to the air-conditioner main body (12) and blows out the conditioned air, and the blow-off duct (1
In the spot air conditioner (1) having a duct driving means (2) for rotationally driving the air conditioner (6), the tip of the outlet duct (16) is comprised of an infrared reflective sensor having one infrared emitting element and one infrared receiving element. Person detection means (9) installed in the air conditioner to detect persons subject to air conditioning
When the signal output from the person detection means (9) is greater than or equal to the set value, the blowing duct (16) is further rotated at a predetermined angle (2
θ_2) is rotated, and only when the signal output at that time is greater than or equal to the set value, it is determined that a person has been detected, and the above-mentioned air outlet duct (16)
a drive control means (10) that slightly rotates the air conditioner by a predetermined angle (±θ_1), detects the stoppage and movement of the person to be air-conditioned based on the change in the signal output, and controls the blow-off duct (16) to track the person to be air-conditioned; ) A spot air conditioner characterized by having. (4) The drive control means (10) further rotates the blow-off duct (16) by a predetermined angle (2θ_2), and when the signal output at that time is equal to or higher than the set value, the blow-off duct (16) 4. The spot air conditioner according to claim 3, wherein the spot air conditioner is reversed by a predetermined angle (θ_2).