JPH07104027B2 - Spot air conditioner - Google Patents

Description

TECHNICAL FIELD The present invention relates to a spot air conditioner for performing local cooling or the like,
In particular, it relates to measures for detecting the rotation angle of the blowout duct.

(Prior Art) Generally, in various factories and the like, spot air conditioners for local cooling are provided to improve the working environment. In this spot air conditioner, as disclosed in Japanese Utility Model Publication No. 61-101333, a refrigerant circuit including a compressor, a condenser, an evaporator and an expansion mechanism is housed in a housing mounted on a wagon. In addition, a condensing fan and an evaporating fan are housed, and the cold air that has exchanged heat with the evaporator is blown toward the worker from a blowing duct connected to the upper part of the housing for local cooling. There is something.

Further, the blow-out duct is connected to a swing cylinder, which is pivotally supported by a housing by a diametrical pin, and a motor is connected via a link mechanism. Then, the drive output duct of the motor is swung to secure a wide range of cooling.

(Problem to be Solved by the Invention) In the above-mentioned spot air conditioner, since the blowout duct is swung around the pin, a bellows is provided between the housing and the housing for sealing, but the sealing property against dew condensation or the like is poor. There was a problem. In addition, because of this seal and the like, a link mechanism or the like must be provided in the housing,
The link mechanism and the pivot pin of the rocking cylinder are located in the cold air passage, and there is a problem that ventilation resistance increases and cooling efficiency deteriorates.

Therefore, while a rotary cylinder is rotatably provided around the shaft center in the housing, a motor is provided outside the housing to connect the motor and the rotary cylinder, and a blow duct is connected to the rotary cylinder to provide the blow duct. It is conceivable to reciprocate right and left.

At that time, since the blow-out duct is inverted at both ends of the rotation range, it is necessary to detect the rotation limit positions at both ends. Since the position is detected by the displacement of, there is a problem that it has a mechanical driving unit and its life is short. Further, since the probe is brought into contact with the rotary cylinder, there is a problem in that the accuracy of the processing of the rotary cylinder and the mounting position of the limit switch are required, and the reliability of the detection accuracy is low.

Further, if an attempt is made to detect the turning angle of the blowout duct using the detection signal of the limit switch, the limit switch outputs only one position signal indicating the turning limit position. It has to be detected by a timer or the like, and in addition, correction is required according to the power frequency supplied to the motor, which causes a problem of low angle detection accuracy.

The present invention has been made in view of the above point, and detects the plurality of convex portions and concave portions provided on the outer peripheral portion of the blowing duct in a non-contact manner, thereby highly accurately determining the rotation angle of the blowing duct. Therefore, it is an object of the present invention to improve the accuracy of rotation control of the blowout duct and to improve the sealing property and the air conditioning efficiency.

(Means for Solving the Problem) In order to achieve the above-mentioned object, the means taken by the present invention is, as shown in FIG. 1, first, an air conditioner main body (12) which sucks indoor air and generates conditioned air. Is provided. And
A blow duct (16) for blowing the conditioned air is rotatably attached to the air conditioner main body (12), and the blow duct (16) is rotated with respect to the air conditioner main body (12) to blow out the air. A duct drive means (2) for changing the direction is provided.

Furthermore, a plurality of convex portions (72), (72), ... With a predetermined width and a plurality of concave portions (73) with a predetermined width are provided on the outer peripheral portion of the blowout duct (16).
Are alternately formed corresponding to the rotational angle position of the blowout duct (16), and the plurality of recesses (73), (73),
The side end recesses (73c), (73c) located at both ends of the ... are wide, and the other middle recesses (73b), (73b), ... and the central central recess (73a) are the side end recesses (73c). ), (73c) while being formed to have a smaller width, the plurality of convex portions (72), (72),
Of the central concave portions (73a), the central convex portions (72a) and (72a) located on both sides of the central concave portion (73a) are wide, and the other lateral convex portions (72b) and (7a) are wide.
An angular position member (7) is provided in which 2b), ... Are formed with a width smaller than that of the central convex portions (72a), (72a).

In addition, each convex portion (72), (7) of the angular position member (7)
Position detecting means (74) for non-contact detection of 2), ... And recesses (73), (73) ,.

In addition, the central convex portion (72) output by the position detecting means (74)
a) a central counting means (TMa) having a preset count time shorter than the detection output time of (a) and longer than the detection output time of the lateral convex portion (27b), and a count time of the central counting means (TMa) or more Further, there is provided central discriminating means (82d) for discriminating the central position when the position detecting means (74) continuously outputs the convex portion detecting signal and then outputs the concave portion detecting signal.

Moreover, the rotation angle of the blowout duct (16) is derived based on the output signal of the position detection means (74) and the center position determined by the center determination means (82d), and the blowout duct is set within the set rotation range. Rotation control means (82c) is provided to control the duct drive means (2) so that the (16) rotates.

Furthermore, the side edge counting means (TMb) and the side edge counting means (TMb) having a preset count time longer than the detection output time of the intermediate concave portion (73b) output by the position detecting means (74). The position detection means (74) above the count time
Has a side end discriminating means (82g) for discriminating the side end position when the recess detection signal is continuously output, and at the side end position, the blowing duct (1
Side end position control means (82f) for controlling the duct drive means (2) is provided so that 6) is reversed.

Further, the means taken by the invention according to claim 2 is such that, in the invention according to claim 1, the duct drive is arranged so as to rotate the blowout duct (16) in one direction at the beginning of rotation control of the blowout duct (16). Initial drive means (82e) for controlling the means (2) is provided.

Further, the means taken by the invention according to claim 3 is that, in the invention according to claim 1 or 2, the count time longer than the count time of the central counting means (TMa) and the side edge counting means (TMb) is preset. Abnormality detecting means (TMc), and abnormality detecting means for discriminating an abnormality when the position detecting means (74) continuously outputs one concave portion detection signal or one convex portion detection signal for a time longer than the counting time of the abnormality counting means (TMc). (82h) is provided.

(Operation) With the above configuration, in the invention according to claim (1), the air conditioner body (12) sucks indoor air to generate conditioned air, for example, cool air or warm air, and blows the cold air or the like. (1
6) is blowing out. Then, the blowout duct (16) is rotated by the duct drive means (2), and at that time, the angular position member (7) is rotated with the rotation of the blowout duct (16),
The position detecting means (74) detects the convex portion (72) and the concave portion (73) of the angular position member (7).

From the output signal of the position detecting means (74), the central discriminating means (82d) derives the central position of the angular position member (7), that is, the center of rotation. Specifically, the central counting means (TMa) performs a counting operation for each convex portion detection signal output by the position detecting means (74), and the convex portion detection signal is generated for a time longer than the count time counted by the counting means (TMa). When the concave portion detection signal is output after continuous output, the central discriminating means (82d) discriminates the central position. Then, the rotation control means (82c) controls the rotation of the blowout duct (16) by the center position and the output signal of the position detection means (74), and the automatic swing control is performed within a range of 100 degrees, for example. Also, the rotation is controlled to a predetermined angle to control the stop.

In the invention according to claim (2), at the initial stage of the rotation control,
For example, at the beginning of swing control, the initial drive means (82e) rotates the blowout duct (16) in one direction, and the side end position control means (82f) causes the side end position of the angular position member (7), that is, the blowout. The position of the moving side end of the duct (16) is detected and the blowout duct (16) is reversed. Specifically, side edge counting means (TMb)
When the position detecting means (74) outputs the concave portion detection signal for the count time or more counted by the side edge determining means (82g), the side edge determining means (82g) determines the side edge position and reverses the blowout duct (16). Then, the central discriminating means (82d) described above derives the rotation center.

In the invention according to claim (3), when the central counting means (TMa) and the side edge counting means (TMb) perform a calculation operation,
The abnormality counting means (TMc) operates, and the abnormality counting means (TMc)
When the position detecting means (74) continuously outputs the convex portion or concave portion detecting signal for the count time counted by or more, the abnormality detecting means (82h) detects an abnormality and, for example, lights an abnormality lamp.

(Effect of the invention) Therefore, according to the invention of claim (1), the convex portion (22) and the concave portion (73) of the angular position member (7) are detected in a non-contact manner, and this detection signal is used to detect the blowout duct ( Since the rotation angle of 16) is identified, there is no contact part and mechanical drive part like the limit switch, so that the life of the detection means can be extended and the mounting accuracy of the detection means etc. Since it is not required, the reliability of angle detection can be improved. Further, unlike the case where the angle is detected by the rotation time of the outlet duct (16) or the like, the angle is derived based on the detection amounts of the convex portion (72) and the concave portion (73), so that the characteristics of the duct drive means (2) It is not necessary to correct the electric power frequency of the motor, etc., and it is possible to detect an accurate angle.
The rotation control accuracy of the blowout duct (16) can be improved.

Further, since the rotation angle of the blowout duct (16) is derived by the position detecting means (74), the blowout duct (16) can be rotated by using the rotary cylinder that rotates around the axial direction, and the air conditioner can be rotated. Since the sealing property between the main body (12) and the blowout duct (16) can be improved, and the duct drive means (2) can be provided outside the passage of the conditioned air, it is possible to improve the air conditioning efficiency. You can

Further, since the central position and the side end position are detected by making the widths of the convex portion (72) and the concave portion (73) different, it is possible to detect an accurate angle.

Further, according to the invention of claim (2), since the side end position of the angular position member (7) is detected at the beginning of control, the blowing duct (16) is stopped by any method. However, since the central position of the angular position member (7) can be accurately derived after that, the detection accuracy can be improved.

Further, according to the third aspect of the present invention, since the abnormality detecting means (82h) is provided, it is possible to reliably detect, for example, an abnormality of the motor and improve the reliability of the rotation control. be able to.

(Example) Hereinafter, the Example of this invention is described in detail based on drawing.

In FIGS. 2 and 3 showing the overall configuration of the spot air conditioner, (1) is a spot air conditioner, which is provided in various factories and the like, and performs local air conditioning by blowing cool air to an air conditioning target person such as an operator. Is.

The spot air conditioner (1) is configured such that an air conditioner main body (12) is mounted on a wagon (11) having casters (11a) so that the wagon (11) can move freely.
It is formed in two steps, b) and the lower part (11c). The air conditioner body (12) includes a compressor (12a) and a condenser (1
2b), an expansion mechanism (not shown) and an evaporator (12c) are provided with a refrigerant circuit (not shown) to which refrigerant pipes are connected, and the compressor (12a) has a lower part of the wagon (11) ( 11
In the lower part (11c) of the wagon (11), a drain tank (13), an electric box (14), etc. are installed in the housing (15) of the air conditioner body (12) in the lower part (11c) of the wagon (11). ) Is stored and installed inside.

The upper part (11b) of the wagon (11) has a housing (1
5) The condenser (12b) and the evaporator (12c) are provided on both sides of the inside, and one motor (12d) is provided in the center.
A condensing fan (12e) and an evaporating fan (12f) are connected to and housed in. In addition, the housing (1
A condenser side exhaust port (15b) is opened in the upper surface plate (15a) of 5), and the blowout duct (16) is connected to the duct driving means (2).
The outlet duct (16) is formed of a flexible pipe whose wind direction is freely changeable, and is attached to the discharge port (12g) of the evaporation fan (12f) of the housing (15). It is communicated via the top plate (15a). Then, the indoor air that has flowed in from one side surface of the housing (15) due to the driving of both fans (12e) and (12f) undergoes heat exchange in the condenser (12b) to become temperature, and is discharged above the exhaust port (15b). On the other hand, the indoor air flowing in from the other side surface of the housing (15) exchanges heat with the evaporator (12c) to become cool air, and is blown out toward the air-conditioned person from the blowout duct (16). .

In addition, (17) is a drain pan provided in the lower part of the evaporator (12c), and is connected to the drain tank (13) to guide the drain of the evaporator (12c) to the drain tank (13). .

The duct drive means (2) is a drive mechanism (4) housed in a casing (3) attached to an upper plate (15a) of the housing (15), as shown in FIGS. 4 and 5. And a rotating mechanism (5).

Specifically, the casing (3) is provided with a drive mechanism housing (21) surrounded by side walls (31), (32), (33) in the right half in FIG. A turning mechanism housing portion (22) surrounded by a substantially semicircular side wall (34) is formed in the left half portion, and between the driving mechanism housing portion (21) and the turning mechanism housing portion (22). And the four casing mounting bosses (22a), (22b), (22c) and (22d) on the cold air blowing side of the rotating mechanism housing (22), the casing (3) is mounted and fixed to the housing (15). ing.

The drive mechanism storage section (21) includes a motor mounting section (21A) to which a duct motor (41) composed of a geared motor is mounted, an electronic control unit (25), a setting switch plate (26) and a relay harness (27A). And a control section (21B) in which a hollow cover member (61) is provided.
The upper side is covered with.

As shown in FIGS. 6 and 7, the inside of the cover member (61) has a partition wall (61
In a), the motor compartment (21A) and the controller (21B) are divided into a first chamber (62) as a motor chamber and a second chamber (63) as a control chamber. Mounting portions (64) and (64) for mounting on the casing (3) are provided on the outer lower portion of the wall portion (61b) so as to project therefrom.

In addition, a plurality of slits (66) as air outlets extending in parallel with the partition wall (61a) are formed in a portion of the upper wall (62) of the cover member (61) on the first chamber (62) side, and the slit (66) is formed in the lower portion. Is an air intake port (67) on the other two wall parts (61c) and (61d) except the wall part (61b) on which the mounting parts (64) and (64) are projected.
(68) is opened adjacent to the exhaust port (15b). On the other hand, a recess (69) is formed in a portion of the upper wall (65) on the second chamber (63) side, and a knob (26a) of the internal setting switch plate (26) projects into the recess (69). Opening (69a),
(69a) has been opened.

The upper wall (35) of the casing (3) is provided with an opening (35a) through which the rotating mechanism (5) penetrates, and the inner surface (lower surface) of the upper wall (35) rotates. The guide wall (36) of the mechanism (5) is formed so as to project slightly downward. The guide wall (36) is close to the opening (35a), and the front side wall (3
4), the guide wall (36) and the upper end of the front side wall (34) form an annular guide portion (37) of the rotating mechanism (5). (38) is a fixed part of the casing (3) to which the mounting part (64) of the cover member (61) is mounted.

Also, a plurality of fixed columns (not shown) for fixing the lower support plate (23) of the drive mechanism (4) and the rotation mechanism (5) to the side walls (31) to (34) and the guide wall (36). No.) is continuously formed, and the lower receiving plate (23) has a fan (12) for evaporation.
An opening (23a) communicating with the discharge port of f) is provided.
The opening (23a) is formed concentrically with the opening (35a) of the upper surface wall (35), and the opening (23a) of the lower receiving plate (23) is formed.
An annular folded-back piece (23b) is formed in an L shape by being bent upward at the peripheral edge.

As shown in FIG. 4, the drive mechanism (4) is composed of an output shaft (41b) of a duct motor (41) to which a connecting shaft (42) and a belt transmission mechanism (43) are connected. Four
In 1), the gear head (41c) is fixedly supported by the upper wall (35), and the output shaft (41b) is erected so as to be substantially orthogonal to the upper wall (35).

Thus, the first chamber (62) in which the duct motor (41) is housed has the second chamber (63) by the partition wall (61a) and the casing (5) having the rotation mechanism (5) by the motor mounting surface (41d). It is isolated from the internal space of 3). In FIG. 8, (35b) is a motor mounting hole, and (35c) is an electronic control unit mounting hole.

As shown in FIG. 11, the connecting shaft (42) is connected to the output shaft (41
Motor side upper shaft (45) fixed to b) with hexagon socket set screw (44) and pulley side lower side where timing pulley (46) of belt transmission mechanism (43) is slidably inserted The shaft (47) is divided into two parts.

The lower end protruding shaft portion (47a) of the pulley-side lower shaft (47) is supported by the lower receiving plate (23) in the vertical direction via a bearing (48). Therefore, the connecting shaft (42) has only one bearing (48).
It will be supported only by.

As shown in FIG. 12, the upper shaft (45) is composed of a large diameter part (45a) and a small diameter part (45b), and outputs from the large diameter part (45a) to the middle of the small diameter part (45b). A fitting insertion hole (45c) into which the shaft (41b) is fitted is provided, and an end surface (45) on the small diameter portion (45b) side is provided.
A notch (45e) opening downward is formed from d) to the end of the fitting insertion hole (45c). Then, the fitting hole (4
The output shaft (41b) fitted in the 5c) is fixed by the set screw (44) screwed into the screw hole (45f), and the notch (45e)
The pin member (49) fitted to the lower shaft (47) is fitted to the shaft, and when the upper shaft (45) and the lower shaft (47) are connected, the notch (45e) and the idle rotation described later are connected. The universal joint mechanism (6) that absorbs the deviation of the shaft centers of the shafts (45) and (47) is configured in relation to the pin member (49) of the mechanism (7).

Further, the timing pulley (46) of the belt transmission mechanism (43) is fitted and mounted on the flange (47b) at the lower end of the pulley-side lower shaft (47). The timing pulley (46) has a toothed portion (46a) formed on the outer peripheral surface thereof so that the toothed belt (28) is engaged therewith, and the outer periphery of the lower shaft (47) and the inner concave portion of the timing pulley (46). A compression spring (30) is provided between the spring seat (29) and the spring seat (29) regulated by a pin member (49) fitted in the upper part, and the spring force of the compression spring (30). By the timing pulley (46) is the flange (47b) of the lower shaft (47)
The timing pulley (46) is pressed against the lower shaft (47).
Duct motor (41) that is slip-fitted against
The idling mechanism (4a) is constructed. In addition, (27B) is a relay harness.

On the other hand, in the rotating mechanism (5), the blowout duct (16) is connected to the rotary cylinder (51) via the elbow (52), and the rotary cylinder (51) is connected to the rotary cylinder main body (51a). The upper part is fitted into the annular guide part (37), and the lower part is fitted onto the folded-back piece (23b) of the lower receiving plate (23) to be supported in the vertical direction.

An annular extension piece (51b) facing the opening (35a) is continuously formed upward on the inner peripheral portion of the upper end surface of the rotary cylinder body (51a), while a band-shaped protrusion (51c) is formed on the upper outer peripheral surface. A tooth portion (51d) is formed on the lower outer peripheral surface, and the toothed belt (28) of the belt transmission mechanism (43) is hooked on the tooth portion (51d).

Further, an upper sliding sheet (53) is provided between the upper part of the rotary cylinder body (51a) and the casing (3).
Lower sliding sheets (54) are respectively interposed between the lower portion of the rotary cylinder body (51a) and the lower support plate (23), and the rotary cylinder body (51a) is urged by the spring force of the lower support plate (23). The upper and lower end surfaces are sealed by being pressed upward.

Furthermore, on the upper inner peripheral surface of the rotary cylinder body (51a),
As shown in FIG. 9, three sets of mounting flanges for fixing the elbow _{(52) (57A 1) ~} (57A 3), (57B 1) ~ (57B 3),
(57C ₁ ) to (57C ₃ ) are projected, and the mounting flanges (57A ₁ ) to (57A ₃ ), (57B ₁ ) to (57B ₃ ), (57
C ₁ ) to (57C ₃ ) are composed of one set of three and are arranged at unequal angular intervals of 130 °, 130 ° and 100 °.

That is, with the left side as the front, the outlet duct (16)
As can be directed, one mounting flange in the front position (57A _1), mounting flanges (57A ₁₎ in much the left and right α _{1 =} α _{2 =} 130 DEG the mounting flange to a position (57A
₂ ) and (57A ₃ ) are arranged to form a first set.
The mounting flanges (57A ₁ ) to (57A ₃ ) of the second set have the same angular relationship as the mounting flanges of the second set (57B ₁ ) with a positional relationship of β ₁ = 40 ° on the left side. ~ (57B ₃ )
However, the third mounting flanges (57C ₁ ) to (57C ₃ ) are respectively arranged on the right side in the same angular relationship and offset by β ₂ = 40 °.

Further, as shown in FIGS. 4 and 10, the elbow (52) extends obliquely forward and upward from the rotary cylinder (51), and the lower end portion thereof forms an annular extension piece (51b) of the rotary cylinder (51). The blowout duct (16) is fitted to the upper end of the fitting duct.
The elbow (52) has a lower inner peripheral surface on which the first to third sets of mounting flanges (57A) of the rotary cylinder body (51a) are mounted.
Fixed columns (58), (5) in the same angular relationship as ₁ ) to (57A ₃ ).
8) and (58) are bulged to form the fixed columns (58) and (5).
8), (58) and the rotary cylinder or set of mounting flange of the main body _{(51a) (57A 1) ~} (57A 3), (57B 1) ~ (57B 3),
By connecting (57C ₁ ) to (57C ₃ ) with screws etc.,
It is fixed to the rotating cylinder (51). Therefore, it is possible to change the attachment direction of the blowout duct (16) and change the blowout direction from the blowout duct (16) according to the position of the person to be air-conditioned. A relay harness (27C) is provided on the upper side of the inner peripheral surface of the outlet duct (16) with a push rivet (59),
Installed by (59).

In addition, on the rear outer peripheral portion of the rotary cylinder body (51a),
As shown in FIG. 16 to FIG. 16, an angle position member (7), which is a feature of the present invention, is provided, and the angle position member (7) is a circle projecting rearward from the rotary cylinder body (51a). A plurality of convex portions (72), (72), ... Are formed on an arc-shaped support member (71). The convex portions (72), (72), ... Extend downward and are provided corresponding to the rotation angle of the blowout duct (16), and the convex portions (72), (72) ,. The space and both sides are formed in the recesses (73), (73), ... Of the space. Each of the convex portions (72), (72), ... And the concave portions (73), (73), .. is formed with a predetermined width, and on the circumference centered on the axial center of the rotary cylinder body (51a). Are arranged in
The central recess (73a) is formed on the rotation center (N) of the blowout duct (16), that is, in a state where the blowout duct (16) faces right in front. Furthermore, the intermediate recesses (73b), (73b), ... Between the central recess (73a) and each of the protrusions (72) are formed to have the same width and a small width.
The side end recesses (73c) and (73c) on both sides are formed wide. On the other hand, of the respective convex portions (72), (72), ..., Central convex portions (72a), (72) located on both sides of the central concave portion (73a).
A) is formed wide, and the other side projections (72b), (72b), ... Are formed in the same small width. More specifically, the convex portions (72), (72), ... And the concave portions (73), (7
3), ... are set within 100 degrees, which is slightly smaller than the restriction angle (110 degrees) of a stopper (not shown) that forcibly restricts the rotation of the outlet duct (16), centering on the central recess (73a). The angle is set to 50 degrees to the left and right, and the central projections (72a), (72
The distance between the intermediate recesses (73b) and (73b) located on the side of a) is 30.
50 degrees in order from the intermediate recesses (73b) and (73b).
Each intermediate recess (73b), (73
b), ... are set, and the space between the recesses (73c) at both ends is 1
It is set to 00 degrees.

On the other hand, a photo interrupter (74) which is a position detecting means is attached to the casing (3) through a printed circuit board (75), and the photo interrupter (74) is attached.
Comprises a light emitting element (74a) and a light receiving element (74b), which will be described later, arranged so as to be located laterally of the convex portion (72) and the concave portion (73). It is configured to detect (73) optically without contact.

Further, one 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 end of the outlet duct (16), and the person detection sensor (9) is
As shown in FIGS. 17 and 18, a pair of light emitting elements (H ₁ ) and (H ₂ ) fixed to the frame (9a) at an opening angle of a predetermined angle θ ₃ and the pair of light emission. Receiving light that is fixed to the frame (9a) at the center of the elements (H ₁ ) and (H ₂ ), that is, both elements (H ₁ ) and (H ₂ ) have fixed set angles θ ₁ and θ ₂ , respectively. The light emitting device (H ₁ ),
Reflection of infrared rays emitted from (H ₂ ) is detected by the light receiving element (J). However, in the present embodiment, θ ₁ = θ ₂ = θ, and therefore θ ₃ = 2θ.

Here, each of the light emitting devices (H ₁ ) and (H ₂ ) has a predetermined directivity angle ± θ _H , that is, a direction having an intensity of infrared rays emitted at a certain level or more is within a certain angle ± θ _H. It has a limited directivity. Similarly, the light receiving element (J) also has a directivity in which the range of the light incident direction in which infrared rays can be detected is limited to a predetermined directivity angle ± θ _J. The relationship between the set angle θ and the directivity angles ± θ _H and θ _J is set so that θ _H <θ <θ _H + θ _J.

That is, as shown in FIG. 18, both light emitting elements (H ₁ ),
Infrared emitted from the light emitting element (H ₁ ) or (H ₂ ) because the positional relationship between (H ₂ ) and the light receiving element (J) is such that the directional angles of both ± θ _J and ± θ _H overlap each other. Is set so that there is at least one smooth plane such that is reflected within the range of the directional angle ± θ _J of the light receiving element (J).
Specifically, θ <θ _H + θ _J on the right side of the above equation is θ ≧ θ _H +
so that theta _J, both the light-emitting element (H _1), the (H ₂₎ and arranging the light receiving element (J), not overlapping the theta _H and theta _J of FIG. 18 is a light receiving element (J) Are the light emitting elements (H ₁ ) and (H ₂ )
In some cases, it may not be possible to receive infrared rays.

Further, the positional relationship between the light emitting elements (H ₁ ) and (H ₂ ) and the light receiving element (J) is such that the directivity angles of the both light emitting elements (H ₁ ) and (H ₂ ) are ± θ.
The ranges of _H do not overlap with each other, and there is no smooth plane where infrared rays from both light emitting elements (H ₁ ) and (H ₂ ) are simultaneously reflected by the light receiving element (J). . Specifically, θ _H <θ on the left side of the above equation is θ _H ≧ θ
So that the two light emitting elements (H ₁ ) and (H ₂ ) and the light receiving element (J) are arranged so that the two θ _H ,
Since θ _H overlaps, it becomes impossible to determine which of the light emitting elements (H ₁ ) and (H ₂ ) the infrared ray is being received by the light receiving element (J).

That is, the infrared rays emitted from the pair of light emitting elements (H ₁ ) and (H ₂ ) and reflected by one smooth plane forming the surface of the specular reflector (M) are simultaneously set on the light receiving element (J) by the set value. Vs
In order not to let in light with the above intensity, that is, the 19th
As shown in the figure, infrared rays from any of the light emitting elements (H ₁ ) and (H ₂ ) are not input to the light receiving element (J), or
As shown in FIG. 20, only infrared rays from _one light emitting element (for example, H ₁ ) are input.

On the other hand, as shown in FIG. 21, an object that causes diffuse reflection, that is, the clothes (Cl) of the person to be air-conditioned extends over the directivity angle ± θ _H region of both light emitting elements (H ₁ ) and (H ₂ ). When present, due to diffuse reflection on the surface, the infrared rays from both light emitting elements (H ₁ ) and (H ₂ ) simultaneously enter the light receiving element (J) at a set value Vs or higher, and one of the light emitting elements (eg,
Orientation angle of H ₁ ) ± θ There is a part of clothes (Cl) in the _H region, but the orientation angle of the other light-emitting element (H ₂ ) is ± θ _H
In the case where a part thereof does not exist in the area, only the infrared ray from the light emitting element (H ₁ ) is input to the light receiving element (J) with the intensity of the set value Vs or more. Furthermore, the 22nd
As shown in the figure, the clothing (Cl), that is, the movement of the person to be air-conditioned is identified by the order of receiving infrared rays from both light emitting elements (H ₁ ) and (H ₂ ).

When the light receiving element (J) is installed so that the center line of the light receiving element (J) is orthogonal to the background wall glass or the like and the background is a specular reflector (M), as shown in FIG. Also, the infrared rays emitted from both light emitting elements (H ₁ ) and (H ₂ ) and then reflected by the specular reflector (M) are not reflected within the detection range of the light receiving element (J). .

FIG. 23 shows a control block diagram of the spot air conditioner (1). The human detection signal output from the human detection sensor (9) is included in the A / D converter (8) included in the control unit (8).
It is configured to be converted into a digital signal in 1) and input to the CPU (82). Further, an angle signal output from the photo interrupter (74) is input to the CPU (82), and a mode change switch for switching the blowing duct (16) between a fixed mode, an automatic swing mode, and a person tracking mode. The mode signal output by (83a) and the setting signal output by the angle setting switch (83b) are input. Further, the control unit (8) includes a memory (8 including a ROM in which program data for realizing a control flow described later is stored in advance and a RAM for storing processing data (8).
4) is provided so as to be connected to the CPU (82), and the sensor flag (ST
F), human detection flag (HKF), human non-detection flag (MKF), and count-up flag (CUF) are included, while the control unit (8) includes various timers (TM1) to (not shown).
(TM4), (TMa), (TMb), (TMc) are included.

Furthermore, the control unit (8) includes a right rotation drive circuit (85a) and a left rotation drive circuit (85b) for the duct motor (41), and a first relay (86) constituting an air conditioning control means (86). A relay drive circuit (87) for the RY1) and the second relay (RY2) is provided so as to be connected to the CPU (82). The duct motor (41) drives the right rotation and left rotation drive circuits (85a), (8) based on the output signal of the CPU (82).
5b) forward and reverse control, while both relays (RY
1) and (RY2) are configured to be ON / OFF controlled by the relay drive circuit (87) based on the output signal of the CPU (82). Further, the fan control relay (X) included in the air conditioning control means (86) is constituted by both the relays (RY1) and (RY2).
1) and the compressor control relay (X2) are ON / OFF controlled to drive and control the fan motor (12d) and the compressor motor (12h). Then, the air conditioning control means (8) includes fans (12e), (12f) and a compressor (12).
It is configured to control a) by controlling a).

In addition, in the CPU (82), the outlet duct (16) is directed toward the air-conditioned person in response to the person detection signal and the movement signal of the person detection sensor (9), and the movement of the air-conditioned person is followed. The wind direction control means (82a) is configured to control the duct motor (41) of the duct drive means (2) so as to move.

FIG. 24 is a detailed circuit diagram showing the output signal system of the photo interrupter (74) and the drive control system of the duct motor (41) in the control block diagram of FIG. 23, and the light emitting element (74a) of the photo interrupter (74). ) And light receiving element (75b)
And are arranged side by side at a predetermined interval, and both elements (74a), (74a)
When the convex portion (72) is located between b), the light emitted from the light emitting element (74a) is blocked. The output signal of the photo interrupter (74) is transmitted to the CPU (8) via the transmission circuit (88) including a transistor and an optical coupling element.
The high signal which is “1” when the light is blocked by the convex portion (72) and the low signal which is “0” when the light is transmitted by the concave portion (73) is input to the CPU (82). Has become. The duct motor (41) has an AC power supply (89).
Are connected, and the above-mentioned drive circuits (85a), (85b)
Is composed of an optical coupling element and a triac. Further, the CPU (82) has a photo interrupter (7
The central position deriving means (82b) for deriving the central position of the angular position member (7), that is, the rotation center (N) of the blowout duct (16) in response to the detection signal of 4), and the central position deriving means (82b). 82b) and the output signal of the photo interrupter (74) to derive the rotation angle of the blowout duct (16), and within the set rotation range, for example, 50 degrees or 100 degrees, the blowout duct (16). A rotation control means (82c) for controlling the duct motor (41) so as to automatically swing. The central position deriving means (82b) includes a central timer (TMa) which is a central counting means and a central discriminating means (82d), and the central timer (TMa) is a photo interrupter (7).
4) is set to a count time shorter than the high signal time of the central convex portion (72a) and longer than the high signal of the side convex portion (72b), and the discrimination means (82d) is set to the high signal of the photo interrupter (74). The center of rotation (N) is discriminated when the signal changes to a rotor signal after being continuously output for more than the count time of the central timer (TMa).

Further, the CPU (82) is configured to rotate the blowout duct (16) in one direction, for example, to the right at the beginning of rotation control that requires an angle signal, such as at the beginning of automatic swing control of the blowout duct (16). Initial drive means (82) for controlling the duct motor (41)
e) and the output signal of the photo interrupter (74), the blowing duct (16) by the initial drive means (82e).
Of the angular position member (7) by the rotation of the
And a side end position control means (82) for controlling the duct motor (41) so that the outlet duct (16) is reversed (rotated counterclockwise).
f) and are constructed. The side end position control means (82f) is a side end timer (TMb) which is a side end counting means.
And a side edge discriminating means (82g), and the side edge timer (TMb) is set to a count time longer than the low signal time of the intermediate recess (73b) output by the photo interrupter (74). The side edge discriminating means (82g) continuously outputs the low signal of the photo interrupter (74) for more than the counting time of the side edge timer (TMb), that is, the side edge recess (73g).
It is configured to determine the side end position when the signal c) is a low signal.

Furthermore, the CPU (82) includes an abnormality timer (TMc) which is an abnormality counting means, and an abnormality detecting means (82h). The abnormality timer (TMc) is the central timer (TMa)
And the side edge timer (TMb) is set to a longer count time than any of the count times, and the abnormality detection means (82h)
Is configured to detect the abnormality of the duct motor (41) and turn on the abnormality lamp when the high or low signal of the photo interrupter (74) is continuously output for more than the count time of the abnormality timer (TMc). Has been done.

Next, the air conditioning control operation of this spot air conditioner (1) will be described based on the control flow of FIGS. 25 to 28.

Then, first, regarding the angle detection operation of the blowout duct (16) and the automatic swing operation using the detected angle, that is, the control operation in which the mode changeover switch (83a) is set to the automatic swing mode, which is a feature of the present invention, It will be described with reference to FIGS. 25 and 26.

When this automatic swing operation is started, it is initialized in step ST201, and after resetting a count-up flag (CUF), for example, the process proceeds to step ST202 and the duct motor (4
The initial drive means (82e) drives 1) to blow out the duct (16).
To move to step ST203 and determine whether the low signal “0” of the photo interrupter (74) has been continuously output for more than the count time (Tb) of the side edge timer (TMb). (Tb) Return to step ST202 until output is continued. That is, at the beginning of control, the outlet duct (1
The rotation center (N) of 6) is unknown, and the outlet duct (1)
Since the position of 6) is also unknown, the outlet duct (16) is rotated to one end in order to derive the rotation center (N). Then, when the duct motor (41) is driven, the rotary cylinder body (41a) rotates via the belt transmission mechanism (43), the blowing duct (16) rotates, and the angular position member (7) rotates. The photo interrupter (74) moves to the convex part (7
The high signal and the low signal are alternately output by 2) and the recess (73). Since the output time of the intermediate recess (73b) of the low signal of this recess (73) is short, steps ST202 and T2
When the blow duct (16) is rotated to the side end and the side end recess (73c) is rotated to the position of the photo interrupter (74) by repeating the operation of 03, the low signal continues to be output, so the count time (Tb ), For example, if 200msec continuous output,
The side end position determining means (82g) of the side end position control means (82f) determines the side end position. Then, from step ST203 to step D
After moving to T204 and setting the count-up flag (CUF), move to step ST205 where the side end position control means (82f)
Turns the duct motor (41) counterclockwise to rotate the outlet duct (16) counterclockwise, that is, to rotate it toward the center.

Then, the process proceeds from step ST205 to step ST206, and it is determined whether the output signal of the photo interrupter (74) is a high signal "1" or a low signal "0". If it is a high signal, the process proceeds to step ST207. Advance the central timer (TMa),
In step ST208, it is determined whether or not the central timer (TMa) has counted the count time (Ta) or more.
It is determined whether or not 0 msec is reached, the process proceeds to step ST209 until 200 msec has elapsed, it is determined whether or not the count-up flag (CUF) is reset, and the process returns to step ST206 until it is reset. In addition, the above step ST206
If the output signal of the photo interrupter (74) is a low signal at step ST21, the process proceeds to step ST210 and the central timer (TMa)
Is reset, the process proceeds to step ST209, and the above operation is repeated. That is, when the blowout duct (16) starts to rotate from the side end toward the center, the photo interrupter (7
4) alternately outputs a high signal and a low signal by the convex portion (72) and the concave portion (73), resets the central timer (TMa) with this low signal (step ST210), and is outputting the high signal. To step the central timer (TMa) (step ST2
07). Then, the side protrusions (72
Since b), (72b), ... Are formed in a small width, the output time of the high signal is short and the central timer (TMa) does not count up to the count time (Ta).
Repeat the operation from 6 to ST210.

After that, the blowout duct (16) rotates to almost the center,
When the central convex portion (72a) rotates to the position of the photo interrupter (74), a high signal is continuously output, so the central timer (TMa) counts up to the count time (Ta), and from step ST2308 to step ST211. After shifting to reset the count-up flag (CUF) and counter (C), respectively, the process proceeds to step ST209, and since the count-up flag (CUF) is reset, step ST2
12, the number of times the output signal of the photo interrupter (74) is inverted from a high signal to a low signal (1 → 0) is counted, and then the process proceeds to step ST213, where the swing setting angle of the blowing duct (16) is 30 degrees. For example, if the angle setting switch (83b) is set to 30 degrees, the process proceeds to step ST214, it is determined whether the counter (C) is 1, and the above is continued until it becomes 1. Return to step ST206.

That is, the blowout duct (16) rotates to the center, the photo interrupter (74) outputs a high signal of the central convex portion (72a), and the central timer (TMa) count time (Ta)
After step ST206, the operations following step ST209 are performed, but until the output signal of the photo interrupter (74) changes to the low signal of the central concave portion (73a), step ST206 is performed.
The operation of step ST214 is repeated from then, and when the high signal of the central convex portion (72a) is inverted to the low signal of the central concave portion (73a), the central discriminating means (82d) of the central position deriving means (82b) causes the blowing duct. The rotation center (N) of the (16) is derived and the central position of the blowout duct (16) is identified, and in the step ST212, the central recess (73a).
The counter (C) is reset by the inversion of the output signal of the photo interrupter (74) by, and this inversion is not counted, and counting is started by inversion from the next high signal to the low signal.

Subsequently, when the blowout duct (16) is rotated in the same direction beyond the rotation center (N) and is now rotated leftward,
First, the output signal of the photo interrupter (74) is inverted from the low signal of the central concave portion (73a) to the high signal of the central convex portion (72a) on the other side, and then changed to the low signal again at the next central concave portion (73b). When it is reversed, the counter (C) is incremented by 1 in step ST212.
Therefore, the counter (C) is determined to be 1 in step ST214, the process proceeds to step ST215, the count-up flag (CUF) is set, and then the process proceeds to step ST216, the motor (41) is inverted, and the process proceeds to step ST206. Then, the above operation is repeated.

In other words, as shown in FIG. 16, the central concave portion (73b) adjacent to the central convex portion (72a) is set to the swing angle of 30 degrees, and the current setting (step
ST213), so the angle of 30 degrees is identified by the inversion of the low signal from the first high signal, and the rotation control means (82c)
Reverses the rotation of the outlet duct (16) (step ST21
6).

After that, the central position deriving means (82b) derives the rotation center (N) of the outlet duct (16) in the same manner as described above (step ST20).
6 to ST212), and then in step ST214, derive the other end of 30 degrees and repeat this operation to set the outlet duct (16).
The center position deriving means (82
While the rotation center (N) of the blowout duct (16) is derived in b), the rotation angle is detected by the output signal of the photo interrupter (74), and the rotation control means (82c) is blown out by the blowout duct (16).
Shake the head.

Further, when the swing angle of the blowout duct (16) is set to 50 degrees, the process moves from step ST213 to step ST217 and step ST218 to determine whether or not the counter (C) has reached 3 and set it to 50 degrees. The blow duct (16) is inverted in the same manner as described above by the low signal of the corresponding central recess (73b). Also, when the swing angle is set to 70 degrees, move from step ST217 to step ST219 and step ST220,
When the counter (C) is determined to be 5, the head is swung, and when it is set to 100 degrees, step ST219
Then, the process proceeds to step ST221 to determine whether or not the counter (C) has reached 8, and perform the swing motion.

FIG. 26 shows the abnormality determination control operation. When the central timer (TMa) and side edge timer (TMb) start operating, abnormality determination is performed. First, step ST25.
After stepping up the abnormality timer (TMc) in step 1, the process proceeds to step ST252, it is determined whether or not the output signal of the photo interrupter (74) is inverted from high to low, or from low to high, and it is inverted. Until step ST253, the abnormality timer (TMc) counts the count time (Tc), for example, 1.5sec.
Then, the central timer (TMa) and side edge timer (TMb)
The count time (Ta), (Tb) is longer than 200 msec, and the above step ST25 continues until this count time (Tc) elapses.
Return to 1. Then, by the time the abnormality timer (TMc) counts the count time (Tc), the photo interrupter (74)
When the output signal of is inverted, from step ST252 to step S
Move to T254, reset the abnormality timer (TMc) and return. On the other hand, when the abnormality timer (TMc) counts the count time (Tc) while the output signal of the photo interrupter (74) is low or high, the process moves from step ST253 to step ST255 and resets the abnormality timer (TMc). After that, the process proceeds to step ST255 to reset the abnormality timer (TMc), and then proceeds to step ST256 to proceed to the abnormality processing routine. In other words, the central timer (TMa)
When the side edge timer (TMb) starts, the abnormality timer (TMc) also starts, and when the abnormality timer (TMc) times out, the abnormality detection means (82h) detects an abnormality. For example, when the high signal indicating the central convex portion (72a) is continuously output for 1.5 seconds or longer, or when the low signal indicating the side concave portion (73c) is continuously output for 1.5 seconds or longer, the duct motor (41) Error or the photo interrupter (74) is abnormal, the abnormal lamp is turned on.

Next, the air conditioning control operation of this spot air conditioner (1) will be described based on the control flow shown in FIG. Regarding this control flow, a fixed mode in which the blowout duct (16) is fixed in a fixed direction, an automatic swing mode in which the blowout duct (16) automatically swings, and a blowout duct (16 ) Will be described in turn with respect to the person tracking mode in which the person follows the movement of the person to be air-conditioned.

Therefore, first of all, the fixed mode will be described. After the power is turned on, the initialization is performed in step ST1. For example, the corner flags (STF), (HKF) and (MKF)
After the is reset, move to step ST2, and
e), (12f) and the compressor (12a) are driven. That is, C
The relay drive circuit (80) becomes the first by the output signal of the PU (82).
And the second relays (RY1) and (RY2) are turned on, the fan control and compressor control relays (X1) and (X2) are turned on, and the fan motor (12d) and the compressor motor (12h) are driven. It will be. After that, the process proceeds from step ST2 to step ST3, the mode is determined, and the current mode switch (83
Since it is provided in fixed mode by a), step S
Move to T4, stop the duct motor (41) that rotates the blowout duct (16) if it is driving, and then step
Moving to ST5, human detection flag (HKF), non-human detection flag (MK
F) and each timer (TM1) to (TM4) are reset. Then, in step ST6, if the fans (12e) and (12f) are stopped, turn on the fan control relay (X1) to drive it, then move to step ST7, and the compressor (12a) It is determined whether or not 3 minutes have elapsed after the stop. That is, in order to prevent continuous start / stop of the compressor (12a), once stopped, the compressor is not restarted for 3 minutes. If 3 minutes have not elapsed, the process moves from step ST7 to step ST8.
While returning to step ST3 with the compressor (12a) stopped, move from step ST7 to step ST9 if 3 minutes have elapsed, and if the compressor (12a) is stopped, control the compressor Turn on the relay (X2) and turn on the compressor (12a)
Drive and returns to step ST3. Then, the operation from step ST3 to step ST9 is repeated,
Cold air is always blown in a certain direction, and the blowing duct (16) is a flexible pipe in the blowing direction again.
An operator or the like manually bends the blowing duct (16) and sets manually.

Next, the automatic swing mode will be described. After the power is turned on, the steps ST1 to ST3 operate in the same manner as the fixed mode, and in this step ST3, the mode changeover switch (83a) is set to the automatic swing mode. So
When this automatic swing mode is determined, the process proceeds to step ST10, and the duct motor (41) is driven to drive the blowout duct (1
6) Rotate back and forth. After that, the process moves from step ST10 to step ST5, and operates in the same manner as in the fixed mode up to steps ST8 and ST9, and returns to step ST3. That is, step ST201 to step ST221 in FIG. 25 described above.
The blow duct (16) is automatically swung while controlling the.

Next, the person tracking mode will be described. So, first,
The signal processing operation of the human detection sensor (9), which is the basis of the direction control of the outlet duct (16) and the like, will be described based on the control flow of FIG. 28 and the control timing of FIG. 29. FIG. 28 shows the control contents of the CPU (82), and the light emitting element (H ₂ ) on the right side is turned on in step ST101 (see FIG. 29 (ii)).
Then, infrared light is emitted, and in step ST102, it is determined whether or not the output signal V ₂ of the light receiving element (J) is the set value Vs or more.
If it is equal to or more than the set value Vs, the light emitting element (H ₁ ) on the left side is turned on (see FIG. 29 (i)) to emit infrared light in step ST103, and the output V of the light receiving element (J) is output in step ST104. _It is further determined whether ₁ is the set value Vs or more. When the determination is YES, it is determined that the person to be air-conditioned is present in front of the light receiving element (J), the person detecting operation is started in step ST105, and the person detecting signal is output in step 106. , In step ST107, after setting the sensor flag (STF) which indicates that the signals from both light emitting elements (H ₁ ) and (H ₂ ) are simultaneously input to the light receiving element (J) to "1", Return to step ST101.

After that, the above flow is repeated, and the determination in the above step ST104 changes and the output V ₁ of the light receiving element (J) is set to the set value.
When NO is lower than Vs, the person to be air-conditioned judges that the light emitting element (H ₁ ) on the left side is outside the directional angle range ± θ _H , and further the sensor flag (STF) is set in step ST108. When it is YES, it is determined that the person to be air-conditioned is a person moving from the front to the right by a change from the state in which the person to be air-conditioned is present in front of the light receiving element (J). Step ST109
The air-conditioning target person starts the right movement operation in which the person has moved to the right, and outputs a right movement signal in step ST110.

On the other hand, if the determination in step ST102 is NO when the output V ₂ of the light receiving element (J) is lower than the set value Vs, the left light emitting element (H ₁ ) is turned on in step ST111, and in step ST112. Output V ₁ of light receiving element (J) is set value V
It is determined whether it is s or more. Then, if the determination result is YES, it is further determined in step ST113 whether or not the sensor flag (STF) is "1". If the sensor flag (STF) is "1", the person to be air-conditioned is in front of the light receiving element (J). When it is determined that the change is from the existing state, in step ST114, the person to be air-conditioned starts the left movement operation to the left, and in step ST115, the left movement signal is output.

In other cases as described above, that is, when the determinations in steps ST102 and ST112 are both NO, the outputs V ₁ and V _{2 of the} light receiving element (J) are set even when both light emitting elements (H ₁ ) and (H ₂ ) are on. Value Vs
If not, or the above steps ST108, ST113
When the infrared rays from _one of the light emitting elements (H ₁ or H ₂ ) enter when the determination in NO is not a human detection state, the operation of “no human detection” is started in step ST116, and step ST117 Outputs a person undetected signal.

Then, when the above flow is completed, the sensor flag (STF) is set to "0" in step ST118, the process returns to step ST101, and the above flow is repeated.

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 described with reference to FIG.

First, after the power is turned on, the same operation as in the fixed mode is performed from step ST1 to step ST3. At this step ST3,
Since the mode changeover switch (83a) is set to the human tracking mode, this human tracking mode is determined and step ST11
Then, it is determined whether the human detection flag (HKF) is "0". Since the human detection flag (HKF) is reset when the power is turned on, the process moves to step ST12, and it is determined whether or not the human detection sensor (9) described above outputs a human detection signal. If the person undetected signal is output in step ST117, the process proceeds to step ST13, and if the person detected signal is output in step ST105, the process proceeds to step ST30.

Therefore, when the person to be air-conditioned is not detected, the person undetected operation is started in step ST13, and the process proceeds to step ST14, where it is determined whether or not the person undetected flag (MKF) is "0". And
Since this person undetected flag (MKF) has been reset when the power was turned on, the routine moves from step ST14 to step ST15, advances the second timer (TM2) and proceeds to step ST16, and the second timer (TM2) There is judged whether elapsed a preset short waiting time (t ₂₎ is a step ST in step ST16 until the expiration of the short waiting time (t ₂₎
I will move to 17. Then, from step ST17, the short-term standby operation is performed, and the operation for searching for the person to be air-conditioned is performed. That is, in step ST17, the duct motor (41) is driven, and the blowing duct (16) is oscillated in response to the output signal of the photo interrupter (74) as in the above-described automatic oscillation mode. Then step ST
Move to 18 and drive both fans (12e), (12f) if stopped, move to step ST19
Similar to ST7, it is determined whether or not 3 minutes have passed after the compressor (12a) was stopped to prevent continuous start / stop of the compressor (12a).
After a lapse of minutes, the process moves to step ST20 and continues to be driven while the compressor (12a) is being started or driven. After 3 minutes, the process moves to step ST21 and returns to step ST3 with the compressor (12a) stopped. Become. Then, the operations from step ST11 to step ST21 described above are repeated. Specifically, the short-term standby time (t ₂ ) is set to, for example, 5 minutes, and when the human detection sensor (9) does not detect the person to be air-conditioned, the compressor (12a) and the fan (12)
e) and (12f) are driven to wait for 5 minutes for the person to be air-conditioned to enter the air-conditioning area while blowing out cool air, and at the same time, the outlet duct (16) is rotated to turn the person to be air-conditioned in the air-conditioning area. Are searching for.

After that, when the person to be air-conditioned cannot detect it before the short-term standby time (t ₂ ) elapses, it shifts to the long-term standby operation, and first proceeds from step ST16 to step ST22 to stop the duct motor (41) and blow out the duct. After stopping (16) in the center with respect to the air conditioner body (12), move to step ST23, turn off the fan control relay (X1) and compressor control relay (X2), and turn both fans (12e), (12f) and the compressor (12a) are stopped. Then move to step ST24,
After resetting the second timer (TM2), the process proceeds to step ST25, the person undetected flag (MKF) is set to "1", then the process proceeds to step ST26, and the third timer (TM3) is stepped, and step ST27 Then, it is determined whether or not the third timer (TM3) has passed the preset long waiting time (t ₃ ). Then, until the long standby time (t ₃ ) elapses, the process returns from step ST27 to step ST3 and repeats the above-mentioned operation. At that time, since the person undetected flag (MKF) is set (step ST25), The process returns from step ST14 to step ST22, and the second timer (TM2) does not increment.

This long waiting time (t ₃₎ within the human detection sensor (9) is the long expected machine time without detecting the air conditioning subject (t ₃₎ has elapsed,
The process moves from step ST27 to step ST28, and the third timer (TM
After resetting 3), the process moves to step ST29, the system goes down, the system is restarted by turning the power on again, and the control flow starts from step ST1. That is, in the long-term standby operation, specifically, when the long-term standby time (t ₃ ) is set to, for example, 1 hour, and there is no person to be air-conditioned after the short-term standby time (t ₂ ) has elapsed, Compressor (12a) and fan (12e),
(12f) is stopped to stop the blowing or blowing of cold air, and the blowing duct (16) is stopped at the center to wait for the air-conditioned person to enter. If there is no person to be air-conditioned even after one hour has passed, the entire system is stopped, and even if the person to be air-conditioned enters the monitoring area of the human detection sensor (9), the compressor (12a) etc. will automatically Never boots.

Next, in this person tracking mode, the person detection sensor (9)
When the human detection signal is output, the process proceeds from step ST12 to step ST30, and the human detection establishment operation is started.
When the duct motor (41) is driven, the duct motor (41) is stopped to stop the blowout duct (16). After that, move to Step ST32 and set both fans (12
When both e) and (12f) are stopped, both fans (12f)
After driving e) and (12f), the process proceeds to step ST33, and this step ST33 is similar to step ST7 described above in that the compressor (1
After stopping the compressor (12a) to prevent continuous start and stop of 2a),
It is determined whether or not 3 minutes have elapsed. If 3 minutes have elapsed, the process proceeds to step ST34, and the compressor (12a) is started or, if it is being driven, continue to drive and continue to step ST36. On the other hand, before the lapse of 3 minutes, the process moves to step ST35 and moves to step ST36 with the compressor (12a) stopped. Then, in this step ST36, each timer (TM
After resetting 1) to (TM4), move to step ST37,
Set the human detection flag (HKF) to "1" and step ST3
After shifting to 8 and resetting the person undetected flag (MKF), the process returns to step ST3. After that, in step ST11, since the human detection flag (HKF) is set (step ST37), the determination is NO, and the process proceeds to step ST39,
It is determined whether or not the person movement condition is satisfied, it is determined whether or not the person movement signal is output in the above-mentioned steps ST110 and ST115, and if the person to be air-conditioned does not move, the procedure returns to step ST30. , This step ST3, ST11, ST3
The operations of 9 and ST30 to ST38 are repeated at a predetermined timing.

That is, for example, during the search for the person to be air-conditioned in step ST17, if the person detection sensor (9) detects the person to be air-conditioned, the rotation of the blow-out duct (16) is stopped in step ST31, and the blow-out duct (16) is stopped. Is directed to the person to be air-conditioned, and cold air is blown to the person to be air-conditioned to perform local cooling.

Further, during the long-term standby in steps ST22 to ST27, when the person to be air-conditioned enters the monitoring area of the human detection sensor (9), the process proceeds from step ST12 to step ST30 as described above, and the compressor (12a) and the fan (12e ) And (12f) are driven to blow cool 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 person detection establishment operation.

First, when the human detection sensor (9) outputs a movement signal in steps ST110 and ST115 described above, step ST39
In the step ST
From 39, move to step ST40 to increment the first timer (TM1), and then move to step ST41, which is the first timer (TM1)
There is judged whether elapsed preset delay time (t ₁₎ is the step ST3 to the delay time (t ₁₎ has elapsed
Will return to. This delay time (t ₁ ) 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 immediately returns, the outlet duct (1
6) does not move and keeps the current status for 1 second.

After that, when the above delay time (t ₁ ) elapses, step ST
From step 41, the process proceeds to step ST42, and it is determined whether the person to be air-conditioned has moved rightward or leftward, and based on the output signal of the human detection sensor (9), the above-mentioned step ST11
When the right movement signal is output at 0, step ST43,
When the left movement signal is output in step ST115, step ST4
It will move to 4 respectively. Therefore, first, the case of this right movement will be described. In the above-mentioned step ST43, it is determined whether or not the blowing duct (16) has rotated to the right end restricted position, and if it has not rotated to the right end restricted position. In other words, if the side end position is not detected by the output signal of the photo interrupter (74), it is possible to rotate to the right. Therefore, the process proceeds from step ST43 to step ST45, in which the duct motor (41) is rotated and blown out. Rotate the duct (16) to the right. Then, the process proceeds to step ST46, the fourth timer (TM4) is reset, the process proceeds to step ST47, 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 ST11 becomes YES, and after performing the operations in steps ST30 to ST38 described above,
If the person to be air-conditioned is still moving to the right after the lapse of the delay time (t ₁ ) in ST40, the outlet duct (16) is rotated to the right in Step ST45.

On the other hand, the same applies when the person to be air-conditioned is moving to the left. From step ST42 to step ST44, it is determined whether or not the blowing duct (16) is rotated to the left end control position, and the photo interrupter is determined. If the side edge position is not detected by the output signal of (74), step from ST44.
Move to ST48, rotate the duct motor (41) in the opposite direction to rotate the outlet duct (16) to the left, and then
Moving to ST46, the same operation as the above-described clockwise rotation is performed.

That is, when the person to be air-conditioned moves left and right in the air-conditioning area formed by the blow-out duct (16), the human detection sensor (9) identifies the moving direction, and steps ST45 and ST48.
, The duct motor (41) is rotated in the forward and reverse directions to rotate the outlet duct (16) to follow the movement of the person to be air-conditioned to perform human tracking.
The cold air will continue to be blown to the moving air-conditioned person.

On the other hand, in step ST43 and step ST44, when the blowout duct (16) is rotated to the right end control position or the left end control position, the blowout duct (16) remains the same even if the air-conditioned person moves in the same direction. Since it cannot rotate in the direction, the process proceeds from step ST43 to step ST49, or from step ST44 to step ST50 to advance the fourth timer (TM4).
After that, the process moves from step 49 to step ST51 and from step ST50 to step ST52, and the fourth timer (TM4)
There returns to step ST3 from step ST51 or step ST52 until after a preset stop time (t _4), air duct until the stop time (t ₄₎ has elapsed (16) is stopped at each end limit position is doing. Then, when this stop time (t ₄ ) elapses, from step ST51 to step ST48
Further, from step ST52 to step ST45, the outlet duct (16) is rotated in the opposite direction to step ST46,
The above operation is performed.

In other words, if the person to be air-conditioned moves away from the end of the air-conditioning area, there is a high possibility of returning from the end. Therefore, the blowing duct (16) is stopped at each end restriction position, and within this stop time (t ₄ ). When an air-conditioning target is detected in step ST39,
Moving to ST30, while the person tracking is performed as described above, if the air-conditioned person does not return, the outlet duct (16) is rotated in the opposite direction, and whether or not the person detection signal is output in step ST12 as described above. Will be determined. Then, as described above, the short-term standby operation and the search operation (steps ST13 to ST21)
After that, a long-term standby operation (steps ST22 to ST29) is performed, and if the person to be air-conditioned returns during that time, person tracking will be performed again.

Therefore, the convex portion (72) and the concave portion (7) of the angular position member (7) are
3) is detected without contact, and the rotation angle of the outlet duct (16) is identified by this detection signal, so there is no contact part or mechanical drive part like the limit switch of the conventional example It is possible to extend the life of the means,
Since mounting accuracy is not required for the detection means and the like, the reliability of angle detection can be improved. Further, unlike the case where the angle is detected by the rotation time of the outlet duct (16) or the like, the angle is derived based on the detection amounts of the convex portion (72) and the concave portion (73), so that the characteristics of the duct drive means (2) Therefore, it is not necessary to correct the motor frequency, that is, it is possible to detect an accurate angle, and it is possible to improve the rotation control accuracy of the blowout duct (16).

Further, since the rotation angle of the blowout duct (16) is derived by the photointerrupter (74), the blowout duct (16) can be rotated around the axial direction by using the rotating cylinder, and the air conditioner body (12) can be rotated. ) And the upper plate of the blowout duct (16) can be improved, and the duct driving means (2) can be provided outside the passage of the conditioned air, so that the air conditioning efficiency can be improved. .

Further, since the upper end position of the angular position member (7) is detected at the initial stage of control, even if the blowing duct (16) is stopped in any direction, the central position of the angular position member (7) is thereafter detected. Therefore, the detection accuracy can be improved.

Further, since the central position and the side end position are detected by making the widths of the convex portion (72) and the concave portion (73) different, it is possible to detect an accurate angle.

Further, since the abnormality detecting means (82h) is provided, for example, an abnormality of the duct motor (41) or the like can be reliably detected, and the reliability of the rotation control can be improved.

Although the present embodiment has been described with respect to the movable spot air conditioner (1), the present invention may be applied to a duct type spot air conditioner.

Further, two or more blowout ducts (16) may be provided.

Further, the human detection sensor (9) does not necessarily have to be provided in the present invention.

Further, the outlet duct (16) may be rotated up and down,
The rotation range is not limited to the embodiment.

Further, the rotation control means (82c) is not limited to the automatic swing control.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the configuration of the present invention. 2 to 29 show an embodiment of the present invention, FIG. 2 is a cross sectional front view of a spot air conditioner, and FIG. 3 is a longitudinal side view of the same.
4 is an enlarged vertical sectional view of the duct driving means, FIG. 5 is a plan view of the blowing duct, FIG. 6 is a plan view of the cover member, FIG. 7 is the same vertical sectional view, and FIG. 8 is a plan view of the casing. FIG. 9 is a plan view of the rotary cylinder, FIG. 10 is a bottom view of the elbow, FIG. 11 is a sectional view showing the idling mechanism, and FIG. 12 is a sectional view of the motor side upper shaft. FIG. 13 is a perspective view of the rotary cylinder, FIG. 14 is a cross-sectional view of the relevant part, FIG. 15 is a bottom view of the angular position member, and FIG. 16 is a developed view of the same. FIG. 17 is a cross-sectional view of the human detection sensor, FIG. 18 is an explanatory view showing a positional relationship between a light emitting element and a light receiving element, FIG. 19 is a propagation state diagram of infrared rays to a specular reflector of the human detection sensor, and FIG. FIG. 21 is a propagation state diagram of infrared rays with respect to the tilted specular reflector, FIG. 21 is a propagation state diagram of infrared rays with respect to the clothes, and FIG. 22 is a propagation state diagram of infrared rays with respect to the moving clothes. FIG. 23 is a control block diagram of the spot air conditioner, and FIG. 24 is a detailed circuit diagram of its main part. FIG. 25 is a control flow chart showing angle detection, FIG. 26 is a control flow chart of abnormality detection, FIG. 27 is a control flow chart of air conditioning operation, FIG. 28 is a control flow chart of human detection sensor, and FIG. 29 is It is an output timing diagram of a human detection sensor. (1) …… Spot air conditioner, (2) …… Duct drive means (7) …… Angle position member, (12) …… Air conditioner body, (72) …… Convex part, (73) …… Concave part, ( 74) …… Photo interrupter, (82a) …… Wind direction control means, (82b) …… Center position derivation means, (82c) …… Rotation control means, (82d) …… Center discrimination means, (82g) …… Side end discriminating means (82e) ... initial drive means, (82f) ... side end position control means, (82h) ... abnormality detecting means.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-1-179850 (JP, A) JP-A-64-33455 (JP, A) Practical application Sho-62-22449 (JP, U)

Claims (3)

[Claims] 1. An air conditioner body (12) for sucking indoor air to generate conditioned air, and a blow duct (16) rotatably attached to the air conditioner body (12) for blowing out the conditioned air. A duct drive means (2) for rotating the blowout duct (16) with respect to the air conditioner body (12) to change the blowout direction; and a plurality of predetermined widths on the outer peripheral portion of the blowout duct (16). Convex portions (72), (72), ... and plural concave portions (73), (7
3), ... Are alternately formed corresponding to the rotational angle position of the blowout duct (16), and the plurality of recesses (73), (73) ,.
The side end recesses (73c) and (73c) located at both ends of the side end are wide, and the other middle recesses (73b), (73b), ... And the central central recess (73a) are the side end recesses (73c). , (73c) is formed to have a smaller width, while the plurality of convex portions (72), (72), ...
Center protrusions (7a) located on both sides of the center recess (73a).
2a) and (72a) are wide, and the other side projections (72b) and (72
b), ... Are formed in a width smaller than the central protrusions (72a), (72a), respectively, and the respective protrusions (72), (72) of the angle position member (7), ... and concave portions (73), (73), ... in a non-contact manner, and a position detecting means (74) shorter than the detection output time of the central convex portion (72a) output by the position detecting means (74) The central counting means (TMa) having a preset count time longer than the detection output time of the convex portion (27b) and the position detecting means (74) is convex beyond the count time of the central counting means (TMa). When the recess detection signal is output after the part detection signal is continuously output, the center determination means (82d) determines the center position, and the center position determined by the output signal of the position detection means (74) and the center determination means (82d). Blowing duct based (1
A rotation control means (82c) for deriving the rotation angle of 6) and controlling the duct driving means (2) so that the blowout duct (16) rotates within a set rotation range; The count time longer than the detection output time of the intermediate recessed portion (73b) output by the detection means (74) is set to the preset count time of the side edge counting means (TMb) or the side edge counting means (TMb) which is equal to or longer than the above. The position detection means (74) has a side end determination means (82g) for determining the side end position when the recess detection signal is continuously output, and the duct drive means (2) is arranged so that the blowing duct (16) is inverted at the side end position. ) And a side end position control means (82f) for controlling the spot air conditioner. 2. The spot air conditioner according to claim 1, wherein the blowing duct (16) is initially controlled to rotate.
Duct driving means (2) so that 6) can be rotated in one direction
Spot air conditioner characterized by having an initial drive means (82e) for controlling the air conditioner. 3. The spot air conditioner according to claim 1 or 2, wherein an abnormal count having a preset count time longer than that of the central counting means (TMa) and the side edge counting means (TMb). A means (TMc), and an abnormality detection means (82h) for discriminating an abnormality when the position detection means (74) continuously outputs one concave portion detection signal or one convex portion detection signal for a time longer than the counting time of the abnormality counting means (TMc). Spot air conditioner characterized by being equipped with.