JPH02195149A - Spot air conditioner - Google Patents

Abstract

PURPOSE:To effect air conditioning evenly throughout an air conditioned space so as to enhance the comfortableness by providing a pivotally driving means for changing the direction in which an outlet duct opens, a telescopically driving means which changes the length of the outlet duct, and a telescopically controlling means which controls the telescopically driving means. CONSTITUTION:An air conditioner proper 12 takes in indoor air and conditions it into, for example, cool air or warm air, which is discharged from an outlet duct 16. By controlling a pivotally driving means 2 the outlet duct 16 is pivotally moved back and forth in the manner of automatic oscillation in an air conditioned space in blowing the conditioned air, such as cool air, over the occupants. While the outlet duct 16 is performing the pivotal movement, that is, automatic oscillation or a like movement, a telescopically controlling means 75b controls a telescopically driving means 9 in such a way that, when the outlet duct 16 is positioned at the center of the air conditioned space, the length of the duct is minimized, and the length of the outlet duct 16 is increased as it moves toward each side in the air conditioned space.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a spot air conditioner that performs local cooling, etc.
In particular, it relates to measures to equalize air conditioning.

(Prior Art) In general, spot air conditioners for local cooling are being installed in various factories to improve the working environment. This spot air conditioner is manufactured by Utsukai 61-1013.
As disclosed in Publication No. 33, a refrigerant circuit including a compressor, a condenser, an evaporator, and an expansion mechanism is housed in a housing mounted on a wagon, as well as a condenser fan and an evaporator fan. In some systems, the cold air that has undergone heat exchange in the evaporator is blown out toward the worker from a blow-off duct connected to the upper part of the housing, thereby providing local cooling.

Further, the blow-off duct is connected to an I3 moving cylinder, and the swinging cylinder is pivotally supported to the housing by a diametrical pin, and is connected to a motor via a link mechanism. Then, the motor is driven to swing the blow-off duct to ensure cooling over a wide range.

(Problem to be Solved by the Invention) In the above-mentioned spot air conditioner, the blow-out duct is oscillated to automatically oscillate. ing.

However, at each swing position of the blowout duct,
Since the length of the duct and the amount of air blown are always constant, there is a problem in that the comfort level differs between the central part and both sides of the air-conditioned area that is air-conditioned by swinging of the duct. In other words, the first
As shown in Figure 5, the ambient temperature is 35°C and the air volume is 5.
Under the condition of 5m3/min, the solid line (S) indicates the wind speed (
m/s), and the broken line (T) is the temperature difference from the ambient temperature ('C)
When cold air is blown from the outlet duct (a), the wind speed increases as the distance (X) from the outlet duct (a) increases.
+-5, 52-3, 53-2, S4-0, the temperature difference is 7
1--6. T2--4. T3--2 + T4--1
The temperature decreases, and the sensible temperature increases accordingly.

Therefore, as shown in FIG.
), the worker (H) located in the center of the air conditioning area is located at a distance (xl) from the air outlet duct (a). ) is short and sufficient comfort can be obtained, but the distance (x2) from the air duct (a) is long for workers (H) located on both sides of the air conditioning area, resulting in poor comfort. was there.

The present invention has been made in view of the above points, and the duct length or the blowout air volume of the blowout duct is set so that the blowout duct position is minimized at the center of the air conditioning area and maximized at both sides. The purpose is to provide uniform air conditioning throughout the area and improve comfort.

(Means for Solving the Problem) In order to achieve the above object, the means taken by the invention according to claim (1) is as shown in FIG. An air conditioner main body (12) is provided, and the air conditioner main body (12) has a duct length that is expandable and retractable, and a blow-off duct (12) that blows out the conditioned air.
16) is rotatably provided. Furthermore, a rotation driving means (for rotating the blow-off duct (16) within a predetermined air conditioning area with respect to the air conditioner main body (12) to change the blow-out direction;
2), and a contraction driving means (9) for driving the blow-off duct (16) to expand and contract to change the length of the duct. In addition, the length of the duct is the shortest when the outlet duct (16) is located in the center of the air conditioning area, and the length of the duct becomes longer as the outlet duct (16) rotates to both sides of the air conditioning area. It is configured to include an expansion/contraction control means (75b) for controlling the contraction drive means (9).

Further, the means taken by the invention according to claim ('2J) is that in the invention of claim (1), the above-mentioned blow-off duct (16) is inserted into an outer cylinder (16a) attached to the empty g5 main body (12). The cylinder (16b) is fitted in such a way that it can slide freely in the axial direction and retract freely, while the tension driving means (9) has a rack formed in the axial direction on the outer surface of the inner cylinder (16b). (91
), a pinion (92) meshing with the rack (91), and a pinion (92) provided on the outer cylinder (16a) side.
2), and an expansion/contraction control means (75b) is configured to control the motor (93) in forward and reverse rotation.

In addition, the measures taken by the invention according to claim (3) are
As shown in the figure, if the blow-off duct (16) is located in the center of the air conditioning area instead of the intermediate drive means (9) and expansion/contraction control means (75a) in the invention according to claim (1), the air conditioning A configuration in which air volume adjustment means (8) is provided for adjusting the air volume so that the volume of air blown out is the smallest and increases as the duct (16) rotates to both sides of the air conditioning area. It is said that

Further, the means taken by the invention according to claim (4) is that in the invention according to claim (a), the air volume adjusting means (8) is fixedly provided to the air conditioner main body (12), and A fixed plate (8, 1) in which a ventilation hole (83) is bored, and a fixed plate (8, 1) that overlaps the fixed plate (81) and is provided to rotate with the rotation of the blow-off duct (16). It is composed of a movable plate (82) in which a moving ventilation hole (84) is bored,
The overlapping area of the two-way air outlets (83) and (84) is the smallest when the outlet duct (16) is located in the center of the air conditioning area.
The blow-off duct (16) is formed so that its overlapping area increases as it rotates toward both sides of the air conditioning area.

(Function) With the above configuration, in the invention according to claim (1), the air conditioner main body (12) sucks indoor air to generate conditioned air,
For example, cold air or warm air is generated and the cold air is blown out from the blow-off duct (16). Then, the blow-off duct (1
6) controls the rotation driving means (2) to rotate back and forth within the air conditioning area, and automatically swings its head to blow cold air or the like onto the person to be air conditioned.

When the blow-off duct (16) rotates, such as automatic swinging, the expansion/contraction control means (75b) controls the contraction drive means (9), and when the blow-off duct (16) is located in the center of the air conditioning area, The duct length is minimized, and the duct length is increased as the outlet duct (16) rotates to both sides of the air conditioning area. Specifically, in the invention according to claim (a), the motor (93) is driven as the blow-off duct (16) rotates,
When the blowout duct (16) is located in the center of the air conditioning area,
The inner cylinder (16b) is recessed into the outer cylinder (16a) to minimize the duct length, and when positioned on both sides, the inner cylinder (16b) protrudes from the outer cylinder (16a) to maximize the duct length. ,
Air conditioning target person and outlet duct by changing duct length (16)
The distance between them is adjusted to be almost constant.

Further, in the invention according to claim (3), the blow-off duct (
16), the air volume adjusting means (8) minimizes the air volume when the air outlet duct (16) is located in the center of the air conditioning area. As it rotates to both sides, the amount of air blown out increases. Specifically, in the invention according to claim (4), the movable plate (82) moves against the fixed plate (82) as the blow-off duct (16) rotates.
81), and when the outlet duct (16) is located in the center of the air conditioning area, the ventilation openings (83), (84)
If the TIf tatami surface is located on both sides with a small amount of tatami surface, the overlapping area will be maximum, and the area of passage for cold air etc. will be changed to adjust the air volume blown to the person being air conditioned.

(Effect of the invention) Therefore, according to the inventions of claims (1) and (2),
Because the duct length is short in the center of the air conditioning area and lengthened on both sides, when the air conditioned persons (H) are lined up horizontally, as shown in Figure 14, the air conditioned objects on both sides are Since the distance (X2) between the person (H) and the outlet duct (16) can be made approximately equal to the distance (xl) from the central person (H) to be air-conditioned, each person (H) to be air-conditioned can Conditioned air can be accessed, improving overall comfort.

Further, according to the invention according to claim (3), since the blowout weight is reduced in the central part of the air-conditioning area and increased in the both sides, the air-conditioned person (H) and the blowout duct (16) are connected to each other on both sides. Although the distance (X2) between the air conditioner and the air conditioner is increased, the air volume is increased, so each person to be air-conditioned can receive sufficient conditioned air, and the overall comfort can be improved.

Further, according to the invention according to claim (4), the movable plate (82
) rotates with the rotation of the blow-off duct (16) and adjusts the air volume, so the air volume can be accurately adjusted without providing any control means.

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

As shown in FIGS. 2 and 3, (1) is a spot air conditioner, which is installed in various factories and the like, and is designed to locally cool air conditioners by blowing cold air onto workers and other people to be air-conditioned.

The spot air conditioner (1) is configured to be movable by mounting the air conditioner body (12) on a wagon (11) having casters (11a). It is formed in two stages including a lower stage part (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
The compressor (12a) is installed in the lower part (11) of the wagon (11), and the lower part (11c) has a drain tank (not shown) in addition to the compressor (12a).
13) and electrical box (14) etc. are connected to the air conditioner body (12).
) is housed and installed in a housing (15).

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 condenser fan (12e) and an evaporator fan (12f) are connected and housed in 12d).

Further, a condensing side exhaust port (15b) is provided on the top plate (15a) of the housing (15), and a blow-off duct (16) is rotatably attached via a rotation drive means (2). , the blow-off duct (16) connects the housing (1) to the outlet (12g) of the evaporator fan (12f).
5) are communicated via the top plate (15a). Then, the indoor air sucked in from the side surface of the housing (15) is heat-exchanged by the evaporator (12C), and then the air is transferred to the blow-off duct (16).
It is configured to blow out cold air toward the person being air-conditioned.

In addition, (17) is a drain pan provided at the lower part of the evaporator (12c), and is communicated with the drain tank (13) to transfer the drain from the evaporator (12c) to the drain tank (12c).
13).

As shown in FIGS. 4 and 5, the rotation drive means (2) includes a drive mechanism (4) and rotation in a casing (3) attached to the top plate (15a) of the housing (15). A moving mechanism (5) is housed therein. The casing (3) is formed into a flat box body with an open bottom surface, and has flat sides 9 (31), ( 32) and (33), and a rotating mechanism storage section (22) surrounded by a substantially semicircular side wall (34) in the left half of FIG.
) are formed, and are fixed to the housing (15) at the flanges (3a) at the lower ends of the side walls (32) to (34).

The upper wall (35) of the casing (3) has a rotating mechanism (
An opening (35a) through which the rotating mechanism (5) passes is bored in the front part, and a rotating mechanism (5) is provided on the inner surface (lower surface) of the top wall (35).
A guide wall (36) is formed to protrude slightly downward. The guide wall (36) is close to the opening (35a) and continues to the front side wall (34) to form an annular guide portion (37) of the rotation mechanism (5). In addition, each side wall (31
) to (34) and the guide wall (36), the lower receiving plate (23) and motor mounting plate (24) of the drive mechanism (4) and rotation mechanism (5) are fixed to the fixed columns (38), (38).

..., and the lower receiving plate (23) has an opening (2) communicating with the outlet of the evaporator fan (12f).
3a), and an annular folded piece (23b) is formed in an L-shape at the periphery of the opening (23a).

The drive mechanism (4) is composed of a geared motor (41) connected to a worm gear (42) and a belt transmission mechanism (43), and the geared motor (41) is connected to a motor main body (4
1a) is fixedly supported by the motor mounting plate (24), and the drive shaft (41b) is placed horizontally so as to be parallel to the top wall (35).

In the worm gear (42), a worm (42a) is fitted and fixed to the drive shaft (41b), and a worm wheel (42b) meshing with the worm (42a) is connected to the guide wall (36) and the side wall (33). ) and is fitted onto the shaft (44) using the gap between the shaft (44) and the shaft (44). The shaft (44) is supported in the vertical direction by an upper support plate (not shown) and a lower support plate (23) fixed to the side wall (33), and the worm wheel (42b) is fixed to the upper part. ing. Furthermore, a timing pulley (4) of the belt transmission mechanism (43) is attached to the lower end of the sharad (44).
6) is fitted into the timing pulley (46), and a toothed belt (47) is inserted into and removed from the outer peripheral surface of the timing pulley (46).

On the other hand, the rotating mechanism (5) includes the blowing duct (16) connected to a rotating cylinder (51) via an elbow (52), and the rotating cylinder (51) is connected to the rotating cylinder main body (51a). The upper part is connected to the annular guide part (37), and the lower part is connected to the lower receiving plate (37).
It is fitted and supported by the folded piece (23b) of 23). The rotary cylinder main body (51a) has an annular extension piece (5l b) facing the opening (35a) on the inner periphery of the upper end surface, a band-like protrusion (51c) on the outer periphery of the upper part, and a belt-shaped projection (51c) on the outer periphery of the lower part. Teeth portions (51d) are formed in the southern part (51d).
Is the above belt transmission in d)? M (43) Belt (47
) are being moved in and out.

Further, the upper end surface and the upper wall (3
5), and a lower thrust sheet (53) between the lower end surface and the lower receiving plate (23).
4) are respectively interposed, and the rotating cylinder main body (51a)
An upper radial sheet (55) is disposed between the upper outer circumferential surface and the annular guide portion (37), and an upper radial sheet (55) is disposed between the lower inner circumferential surface and the folded piece (23b).
) are respectively interposed with lower radial seats (56). Furthermore, a mounting flange (5) for fixing the elbow (52) is provided on the upper inner circumferential surface of the rotary cylinder main body (51a).
7), (57), . A fixed column (58) formed in a bulge on the surface.

(58), ... and the above mounting flange (57), (57
), ... are fixed with screws, etc.

On the other hand, a notch (not shown) is formed in the lower part of the guide wall (36), and a stopper (61) facing the notch is provided to protrude from the upper outer peripheral surface of the rotary cylinder body (51a). . Then, the stopper (61) comes into contact with both end surfaces of the notch to form the rotary cylinder (51), that is, the blowout duct (16).
), and the rotation range is set to, for example, 110 degrees.

Further, in front of the motor body (41a), as shown in FIG.
) is provided. The first limit switch (7a)
is composed of microswitches, etc., and is connected to the guide wall (36
) and the flat side wall (32).
39). The probe (71a) of the first limit switch (7a) is provided so as to be in contact with the outer circumferential surface of the rotary cylinder main body (51a) below the stopper (61).

On the other hand, a first protrusion (62) and a second protrusion (63) with which the probe (71a) comes into contact are provided on the outer circumferential surface of the rotary cylinder main body (51a). Both protrusions (62)
, (63) are formed in the axial direction (vertical direction) of the rotating cylinder main body (51a), and the first protrusion (62) is located at the right end limit position of the air conditioning area of the blow-off duct (16), and the second protrusion (63) is formed in the axial direction (vertical direction) of the rotary cylinder main body (51a).
3) are provided at the left end limit positions, and the geared motors (4
1) is controlled in forward and reverse directions, and the blow-off duct (16) is configured to swing η, and the automatic swing range (air conditioning area) is slightly smaller than the rotation range by the stopper (61);
For example, it is set to 100 degrees.

Furthermore, inside the casing (3), there is a blow-off duct (16).
A second limit switch (7b) is provided for detecting the central position in the air conditioning area of 1.), and the second limit switch (7b) is composed of a microswitch or the like. The second limit switch (7b) is connected to the probe (7).
lb) is provided so as to be in contact with and away from the second protrusion (63), and when the probe (7lb) comes into contact with the second protrusion (63), it outputs a position signal.

On the other hand, as a feature of the present invention, the above-mentioned blowout duct (16) has the following features:
As shown in FIGS. 7 and 8, an inner cylinder (16b) is slidably and retractably fitted into an outer cylinder (16a). The outer cylinder (16a) is connected to the tip of the elbow (52), and the inner cylinder (16b) is inserted into the outer cylinder (16a). Furthermore, the outer cylinder (16
Convex portions (16c) and “(16d) are formed in a circumferential manner to protrude from the inner peripheral portion of the tip of a) and the outer peripheral portion of the rear end of the inner cylinder (16b), respectively, and the respective image portions (16c) and (16d) Sliding sheet (16e) made of fluororesin, etc. (16
f) is provided.

Further, the blow-off duct (16) is provided with a contraction drive means (9) for expanding and contracting the length of the duct, and the contraction drive means (9) is attached to the outer surface of the lower part of the inner cylinder (16b). A rack (91) is formed in the axial direction across both front and rear ends of the inner cylinder (16b), and a pinion (92) that meshes with the rack (91) is connected to a motor (93). . Then, the pinion (92) and the motor (9
3) is housed in the four parts (16g) bulged on the lower surface of the tip of the outer tube (16a), and the inner tube (16b) is moved from the tip of the outer tube (16a) by the drive of the motor (93). It is configured to haunt.

FIG. 9 shows a control block diagram of the spot air conditioner (1), in which each of the limit switches (7a), (7
The position signal outputted by b) is configured to be manually inputted to the CPU (75) included in the control unit (73), and the CPU (75) is connected to the above-mentioned blow-off duct (16).
A mode signal output from a mode changeover switch (76) for switching between a fixed mode and an automatic swing mode is input. In addition, the control unit (73) has a ROM that stores program data in advance to realize the control flow described later, and a 200 million ROM that stores processing data.
A memory (77) consisting of AM is connected to the CPU (75), and the RA in the memory (77) is
The storage area of M includes a flag (F), while the control unit (73) has various timers (T
N) and (TM2) are included.

Furthermore, the control unit (73) includes a drive circuit for clockwise rotation (78a) and a drive circuit for counterclockwise rotation (78b) of the geared motor (41), and a first relay (RYI) constituting the air conditioning control means (79). ) and second relay (RY2)
A relay drive circuit (78c) is connected to the CPU (75). The upper geared motor (41) is driven by clockwise and counterclockwise rotation drive circuits (78a) and (78b) based on the output signal of the CPU (75).
), while both relays (RYI
) (RY2) is configured to be ON/OFF controlled by a relay drive circuit (78c) based on the output signal of the CPU (75). Furthermore, both of the above relays (RYI
) and (RY2), the fan control relay (Xl) and compressor control relay (
X2) is ON/OFF controlled and the fan motor (12d
) and the compressor motor (12h) are configured to be drive-controlled. The air conditioning control means (79) is configured to control the air conditioning operation by controlling the fans (12e), (12f) and the compressor (12a). Further, a telescopic motor (93) is connected to the CPU (75) via a telescopic drive circuit (78d) included in the control unit (73).

On the other hand, the CPU (75) has a blow-off duct (16).
An automatic oscillation means (75a) is configured to control the geared motor (41) of the rotation drive means (2) so as to reciprocate, and the length of the blow-out duct (16) is expanded and contracted. An expansion/contraction control means (75b) is configured to control the expansion/contraction drive means (9).

Next, the air conditioning operation of the spot air conditioner (1) will be explained.

First, in the refrigerant circuit (not shown) of the air conditioner body (12), the compressor (12a) is driven to circulate the refrigerant, while the condenser and evaporator fans (12e),
12f), sucks indoor air from the negative side of the housing (15), exchanges heat with the condenser (12b), and exhausts hot air from the exhaust port (15b).
15) Intake indoor air from the other side and connect it to the evaporator (12C
) to generate cold air through heat exchange, and the cold air is sent to the blow-off duct (1
6) The air is blown more towards the person being air-conditioned.

Next, regarding the control of the blowout duct (16), the 10th
The explanation will be based on the control flow shown in the figure.

Note that the mode changeover switch (76) is set to automatic swing mode.

First, in step ST1, initialization is performed, for example, the flag (F) is reset, and then the geared motor (41) is rotated forward or reverse. and,
The rotation of the geared motor (41) is controlled by a worm gear (42).
) and the rotating cylinder (51) via the belt transmission mechanism (43).
The rotating cylinder (51) rotates to open the blow-off duct (
16) is, for example, a iron that rotates from the left end of the air conditioning area. Next, the process moves to step ST2, where it is determined whether or not the first limit switch (7a) outputs a position signal, and the first limit switch (7a) moves to each protrusion (62),
(63) and is not outputting a position signal, that is, when the blow-off duct (16) is in the middle of rotation,
The process moves to step ST3, where the half-turn timer (TMI) is incremented, and the process moves to step ST4, where it is determined whether or not the half-turn timer (TMI) has counted a preset half-turn time (tl). This half rotation time (1+) is
) is set to the time required to rotate from one rotation restriction position to the other rotation restriction position, that is, the time required to rotate from the right end to the left end or from the left end to the right end. Then, the process moves to step ST5 until this half rotation time (1+) has elapsed, and the second limit switch (7b
) has outputted a position signal, and if the position signal has not been output, the process moves to step ST6, continues to drive the telescopic motor (93), returns to step ST3, and repeats this operation. It turns out.

In other words, when the blowout duct (16) is located at the left end of the air conditioning area, the inner cylinder (16b) protrudes the most than the outer cylinder (16a) (see Fig. 14), and the inner cylinder (16b) protrudes the most from the left end toward the center. As the blow-off duct (16) rotates, the expansion and contraction motor (93) is activated by the signal from the expansion and contraction drive circuit (78d).
is driven, the inner cylinder (93b) is retracted into the outer cylinder (16a), and the duct length is shortened.

Thereafter, while repeating the operations of steps ST2 to ST6, when the blow-off duct (16) rotates to the center of the air conditioning area, the inner cylinder (16b) moves into the outer cylinder (16a).
The second limit switch (7b) contacts the second protrusion (63) and outputs a position signal. Based on this position signal, the process moves from step ST5 to step ST7, and after stopping the telescopic motor (93), the process is reversed and returns to step ST6. In other words, the above-mentioned blowout duct (
10) rotates to the right side of the air conditioning area, the inner cylinder (16)
b) begins to protrude, and the duct length increases as the blow-off duct (16) rotates. And this blowout duct (16
) while monitoring the above half-turn time (tl).
In step 5T4), the outlet duct (16) is normally set to reach the right end or the left end within this half rotation time (tl), so when the outlet duct (16) reaches the right end, the first limit switch (7a ) contacts the first protrusion (62) and outputs a position signal, while the inner cylinder (16b) protrudes the most and the duct length becomes the maximum (see FIG. 14).

Upon receiving the position signal of the first limit switch (7a), the process moves from step ST2 to step ST8, and after resetting the half rotation timer (TMI), step ST9
Then, it is determined whether or not the blow-off duct (16) is rotating clockwise. In other words, the duct rotation direction is determined before the position signal of the first limit switch (7a) is output, and the duct is currently rotating clockwise in Figure 5, so the CP
Based on the output signal of U (75), the clockwise rotation drive circuit (78a) is turned on via a drive transistor (not shown), so the duct rotation direction is determined to be clockwise rotation based on the output of this CPU (75). Then, the process moves from step ST9 to step 5TIO, and the clockwise rotation drive circuit (78a) is turned off.
FF to stop the clockwise rotation of the blow-off duct (16), and at the same time, the clockwise rotation drive circuit (78b) is activated via another drive transistor (not shown) based on the output signal of the CPU (75).
) ONL, and rotate the blow-off duct (16) to the left in the counterclockwise direction in Fig. 5.

Next, the process moves from step 5TIQ to step 5T11, where the output stop timer (TM2) is incremented, and then the process moves to step 5T12, where the telescopic motor (93) is stopped, and the process moves to step 5T1B, where the output stop timer (TM2) is incremented. TM2
) has counted a preset output stop time (t2), and the process moves to step 5T14 until the output stop time (t2) has elapsed, and the first limit switch (
It is determined whether the output of the position signal in step 7a) has stopped,
The process returns to step 5TII and repeats the operations up to step 5T14 until the output stops.

This output stop time (t2) is determined by the first limit switch (7
It is set to the time required for the probe (71a) in a) to come into contact with the first protrusion (62), the blow-out duct (16) to turn over, and for the first protrusion (62) to separate from the probe (71a). Normally, the setting is such that the first protrusion (62) separates from the probe (71a) within this output stop time (t2) and the position signal output of the first limit switch (7a) stops. Therefore, when the output of the first limit switch (7a) stops within the output stop time (t2), the process moves from step 5T14 to step 5T15, and after resetting the output stop timer (TM2), step 5T16
Then, drive the expansion and contraction motor (93) to open the blowout duct 1-
After starting to contract (16) again, step ST described above
Return to step 6 and repeat steps ST2 to ST7 above.
The above operations are repeated at a predetermined timing, and the length of the blow-off duct (16) is shortened to the center of the air conditioning area, and then lengthened again when it is rotated to the left.

Thereafter, when the blow-off duct (16) rotates to the left and the first limit switch (7a) contacts the second protrusion (63) and outputs a position signal, in step ST9,
Since the duct rotation direction before outputting the position signal can be identified from the output of the CPU (75), the process moves to step 5T17, and the counterclockwise rotation drive circuit (78b) is rotated in the opposite direction from the previous right end position.
OFF.

The drive circuit for clockwise rotation (78a) is turned ON and the blow-off duct (16) is rotated clockwise again. Then step 5 mentioned above
Step 5T in the same way as at the start of left rotation in TIO~5T14
18 to 5T21 are performed, and the output stop timer (TM2
) and the output of the first limit switch (7a) stops within the output stop time W (tl), step 5T15
will be moved to. Repeat this operation until the air duct (
16) is rotated reciprocally within the air conditioning area at 100 degrees to cause automatic neck vibration, and is also expanded and contracted to blow cold air into the air conditioning area.

Then, step ST1 to step ST5, step ST8 to step 5T15, and step 5T.
From I7 to step 5T21, the automatic swinging means (75
a) is configured while step ST6. Step ST
7. Step 5TI2, step 5T16, and step 5T19 constitute expansion/contraction control means (75b).

Next, during this automatic d swing operation, step ST4
When the half-turn timer (TMl) counts the half-turn time (tl) and times up, the process moves to step 5T22, starts abnormality handling operations for the first limit switch (7a) and the geared motor (41), and moves to step 572B. Abnormal processing will be performed.

In other words, since the upper limit switch (7a) is set to output a position signal at a predetermined period within the half rotation time (tl), this regular signal output can be used to If no position signal is output within time (tl), an abnormality will be determined. A specific example is a geared motor (
41) is malfunctioning and the rotation speed of the blow-off duct (16) is reduced or is not rotating; furthermore, when the first limit switch (7a) is malfunctioning due to a short circuit or the like and no signal is output. Therefore, in step 5T23, the geared motor (41) is stopped, and abnormality processing such as stopping the telescopic motor (93) is performed.

In addition, during the automatic neck vibration operation described above, step 5T13
Alternatively, when the output stop timer (7M2) counts the output stop time (tl) in step 5T20 and times out,
At the start of left rotation, step 5T13 to step 5T
24, after resetting the output stop timer (7M2), the process moves to step 5T25, where it is determined whether or not the flag (F) is set, and the output stop timer (7M2) has timed up starting from a normal control state. In this case, since the flag (F) is "0", the process moves from step 5T25 to step 5T26, the flag (F) is set, and the process moves to step 5T17. On the other hand, if the output stop timer (7M2) times up at the start of clockwise rotation, steps 5T20 to 5T27. After making the determination and setting of (F), the process moves to step 5T10.

In other words, since the detection signal of the first limit switch (7a) is set to be output within the output stop time (tl) until the rotation of the blowout duct (16) is reversed, this regular When the output stop is used and the output of the position signal does not stop within the output stop time (tl), an abnormality or erroneous control is determined. Therefore, as described above, if the output stop timer (T Tvl 2 ) times up when the left rotation start control is performed in step 5TIO (steps 5T24 to 5T26),
Subsequently, in step 5T17, the blowout duct (16
) in the opposite direction.

Then, when the output of the first limit switch (7a) is stopped by this clockwise rotation αill control, the above-mentioned step 5
The control of TIO is determined to be erroneous control, and step 5T described above is performed.
Normal processing will begin from 21. On the other hand, if the first limit switch (7a) continues to output the position signal even if the clockwise rotation control is performed in step 5T17, step 5T
20, the process moves to steps 5T27 and 5T28, and since the flag (F) is set in the above step 5T26, the process moves to steps 5T30 and 5T23, and the process moves to the above-mentioned step 5.
Similar to T22, it is determined whether the first limit switch (7a) or the geared motor (41) is abnormal, and the geared motor (41) is stopped to handle the abnormality.

In addition, in step 5T17, when the output stop timer (TM2) times up for the first time during clockwise rotation control, the process moves from step 5T20 to step 5T27, where the counterclockwise rotation control is performed, and when the output of the first limit switch (7a) stops. Normal processing (step 5T14) is performed, and if output continues, abnormal processing (step 5T30) is performed.

On the other hand, the above-mentioned automatic oscillation control is performed when the duct rotation direction can be identified before the position signal is output from the first limit/throat switch (7a), but when starting the automatic oscillation control such as at startup, It may not be possible to identify it. That is, at the time of starting, etc., the probe (71a) of the first limit switch (7a) comes into contact with any of the protrusions (62), (63), and the first limit switch (7a) outputs a position signal. If so, one 1st limit Sui Sochi (7a
), it is unclear whether the blow-off duct (16) is located at the right end or the left end, and it is difficult to identify whether the rotation starts from the left or the right. I can't.

Therefore, the duct rotation direction is identified by the operations of steps 5T13, 5T20, and 5T24 to 5T29, taking advantage of the fact that the output of the position signal of the first limit switch (7a) is regularly stopped.

First, at the time of startup, the blow-off duct (16) is set to rotate in either the left or right direction, for example, it is set to start rotating to the left, and this step S
Move from T9 to step 5TIO, and connect the guard motor (4
1), steps STI 1 to STI 5T14 are performed, and it is determined whether the first limit switch (7a) stops outputting the signal within the output stop time (t2).

At that time, the above-mentioned blow-off duct (16) is located at the right end, and the first
When the limit switch (7a) is outputting a position signal by the first protrusion (62), it is in a state where it should be rotated counterclockwise, so the output of the position signal will stop within the output stop time (t2), and the step Step 5 from 5T14
The process moves to T15, and normal head oscillation control is performed thereafter.

On the other hand, when the counterclockwise rotation is started in step 5TIO, if the blow-off duct 1-(16) is located at the left end and the first limit switch (7a) is outputting a position signal by the second protrusion (63), Since it is in a state where it should rotate clockwise, the output stop timer (TM2) times up while the position signal is being output, and steps 5T24 to 5T26
The process moves to step 5T17 via , and clockwise rotation is started. Since the blow-off duct (16) is in a state where it should be rotated clockwise, the output of the first limit switch (7a) is stopped within the output stop time (t2), and step 5T
From 21 onwards, normal vibration control is performed.

Further, in step ST9, the rotation operation may be started from a clockwise rotation operation, in which case the process moves from step 5T17 to steps 5T27 to 5TiO, and operates in the same manner as described above.

That is, the blow-off duct (16) is rotated left and right for a short period of time, and the direction of rotation of the duct is identified by stopping the output of the position signal.

Therefore, by making the duct length shorter in the center of the J area and longer on both sides, the air-conditioned persons (H) are lined up in a horizontal line, as shown in Figure 14. If the air conditioning target person (H) on both sides is located at
1), each person to be air-conditioned (H) can receive sufficient conditioned air, and overall comfort can be improved.

11 to 13 show another embodiment, and in this embodiment, instead of changing the duct length in the previous embodiment, the amount of air blown out is changed. In other words, the air volume adjusting means (8) is connected to the duct driving means (2) in the air 2t! 1. It is provided in the communication part between the main body (12) and the blow-off duct (16). The air volume adjusting means (8) is configured to change the air passage area, which is the cross section of the rotary cylinder (51), to adjust the volume of cold air blown out.
23), the fixed flip (81) is attached to the rotating cylinder (51).
A movable member 11Z (82) is formed on each of the movable members 11Z (82).

As shown in FIG. 12(a), the fixed plate (81) is continuously formed at the upper end of the folded piece (23b) of the lower receiving plate (23) so as to cross the inside of the rotary cylinder (51). and is fixed to the air conditioner main body (12). Furthermore, the fixed plate (81) has a fixed ventilation hole (83).
The fixed ventilation port (83) is composed of a main ventilation port (83a) and a sub-ventilation port (83b). And the Ryodofuguchi (83a), (83b)
is formed in a fan shape centered on the rotation center of the rotating cylinder (51), with the cold air blowing side (A side) of the blowing duct (16) at the front, the main ventilation opening (83a) is located at the front, and the sub ventilation opening is located at the front. (83b) is formed at the rear. Further, the main ventilation opening (83a) is formed symmetrically with respect to the center (B) of the air conditioning area (100 degrees) that is air-conditioned by rotation of the blowout duct (16), and the central angle (α1) is It is formed at an obtuse angle, for example, 210 degrees. Further, the sub-ventilation hole (83b) is formed symmetrically around the center (B) of the air conditioning area, and has an acute central angle (α2), for example,
It is formed at 50 degrees. And the main ventilation hole above (
83a) and the sub-ventilation opening (83b) are formed in the right shielding part (81a) and the left shielding part (81b), and the central angle (α3) of both shielding parts (81a) and (81b) is It is shaped like a fan of an acute angle, for example 50 degrees.

On the other hand, as shown in FIG. 12(b), the movable plate (82) overlaps the upper surface of the fixed plate (81) and is connected to the air outlet duct (
The rotary cylinder (51) rotates with the rotation of the rotary cylinder (51).
) is formed across the inside of the rotary cylinder (51). Furthermore, the movable plate (82) has a movable ventilation hole (84).
) is bored, and the movable ventilation opening (84) includes a front ventilation opening (84a), a right ventilation opening (84b), and a left ventilation opening (84).
4C). Then, the 6 ventilation holes (8
4a) to (84c) are formed in a fan shape centered on the rotation center of the rotary tube (51) in the same way as the fixed ventilation port (83), with the cold air blowing side (A side) of the blowing duct (16) facing forward. The front ventilation hole (84a) is formed at the front, the right ventilation hole (84b) is formed at the rear right side, and the left ventilation hole (84c) is formed at the rear left side. Further, the front ventilation opening (84a) is formed symmetrically with respect to the center (B) of the air conditioning area, and has both left and right ventilation openings (84b), (84
C) is larger and the central angle (βl) is an obtuse angle, e.g. 1
It is formed at 10 degrees. In addition, the above-mentioned left and right wind exits (8
4b) and (84c) are formed at symmetrical positions with the center (B) of the air conditioning area as the center line, and the fixing plate (84c) is
1) Both shielding parts (81, a).

Corresponding to (81b), the central angle (β2) is an acute angle, for example,
It is formed at 50 degrees. And each of the above ventilation holes (84
The space between a) to (84c) is formed as a rear shielding part (82a), a right shielding part (82b), and a left shielding part (82c). The rear shielding part (82a) is a sub-ventilation port (82a) when the blow-off duct (16) is located in the center of the air conditioning area.
3b), the central angle (β3) is an acute angle, e.g.
It is formed in the shape of a fan. In addition, the above-mentioned right side shielding part (8
2b) is the right side shielding part (81) of the fixed plate (81) when the blowout duct (16) is located on the right side of the air conditioning area.
In a), the left shielding part (82c) is connected to the blowout duct (16
) is located on the left side of the air conditioning area, the center angle (β
3) is formed in a fan shape with an acute angle, for example, 50 degrees.

When the air outlet duct (16) is located in the center of the air conditioning area, the main air outlet (83a) of the fixed plate (81) and the front air outlet (84a) of the movable plate (82) communicate with each other. (16) rotates to either the left or right, in addition to the main ventilation port (83a) and the front ventilation port (84a), the sub ventilation port (83b) of the fixed plate (81) and the movable plate (
82) right or left ventilation opening (84b), (84c
) is further opened to increase the amount of air blown out.

In this embodiment, unlike the previous embodiment, the blow-off duct (16) is formed of one duct, while the second limit switch (7b) and expansion/contraction control means (
75b), an expansion/contraction drive circuit (78d), and an expansion/contraction motor (93) are not provided.

Next, the air volume adjustment operation will be explained. First, when the above-mentioned blow-off duct (16) is automatically oscillated, the blow-off duct (
16) is located in the center of the air conditioning area, Fig. 12(b)
), the main ventilation hole (83) of the fixed plate (81)
a) The front ventilation opening (84a) of the movable plate (82) is located above, and both ventilation openings (83a) and (84a) are in communication;
The sub-ventilation hole (83b) of the fixed plate (81) is connected to the movable plate (82).
) are closed in line with the rear shield (82a) of the movable plate (82), and the right and left ventilation openings (84b) of the movable plate (82).

(84c) are the right and left shielding parts (of the fixed If (81)).
81a), (81b) are closed.

Therefore, the cold air flows through the front ventilation port (84a) of the movable plate (82).
The area of the passage is the smallest, and the amount of air blown out is the smallest.

Subsequently, when the blow-off duct (16) rotates to the right, the first
As shown in FIG. 3(a), the front ventilation opening (84a) rotates on the main ventilation opening (83a) and opens both ventilation openings (84a),
(83a) is in communication, but the movable plate (82
) is connected to the sub-ventilation port (83b) of the fixed plate (81), and the left side ventilation port (84c) of the movable plate (82) is connected to the sub-ventilation port (83b) of the fixed plate (81).
) begin to communicate with the main ventilation ports (83a) of the fixed plate (81), and when the blow-off duct (16) rotates to the right end limit position, all the ventilation ports (84a) to (8) of the movable plate (82) begin to communicate with each other.
4c) will be opened. In addition, a blow-off duct (16
) rotates to the left, contrary to the above-mentioned rightward rotation, as shown in FIG. Mouth (84
c) is the sub-ventilation port (83b), and the right-hand ventilation port (84b)
begins to communicate with the main ventilation port (83a), and the air outlet duct (
16) is rotated to the left end restriction position, all ventilation ports (84a) to (84c) of the movable plate (82) are opened. Therefore, when the blow-off duct (16) rotates to the right or left, the passage area gradually increases, the blowout volume of cold air increases, and the blowout air volume reaches its maximum at both ends of the air conditioning area, and the airflow reaches the center of the air conditioning area 61. A small amount of cold air will be blown to those who are to be air-conditioned, and a large amount of cold air will be blown to those who are to be air-conditioned on both sides.

In addition, although the above-mentioned example explained the automatic swinging of the blow-off duct (10), even when the blow-off duct (16) is stationary, the air conditioner can manually swing the blow-off duct (16).
) will change the blowout air volume.

Therefore, by reducing the amount of air blown at the center of the air conditioning area and increasing it at both sides, as shown in Figure 14,
When the air-conditioned persons (H) are located in a row horizontally, the distance (x) between the air-conditioned persons (H) on both sides and the air outlet duct (16) is
Although 2) is longer, the air volume is larger, so each person to be air-conditioned can receive sufficient conditioned air, and overall comfort can be improved.

Moreover, since the movable plate (82) rotates with the rotation of the blow-off duct (16) to adjust the air volume, the air volume can be accurately adjusted without providing any control means.

Furthermore, although each of the above embodiments has been described as a movable spot air conditioner, the present invention may be applied to a duct type spot air conditioner.

Moreover, two or more blow-off ducts (16) may be provided, and one blow-off duct (16) may be pivoted to the housing (15) with a pin or the like and rotated.

Moreover, the blow-off duct (16) is provided with a person detection sensor at the tip of the blow-off duct (16), etc., and the blow-off duct (16) is configured to follow the movement of the person to be air-conditioned based on the detection signal of the person detection sensor. You can also do this.

Furthermore, the installation position of the air volume adjusting means (8) in the second embodiment is not limited to the inside of the duct driving means (2), and the shapes of the ventilation holes (83) and (84) are also limited to those in the embodiment. isn't it.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the 1111 configuration of the invention according to claim (1). 2 to 10 show the first embodiment, FIG. 2 is a cross-sectional front view of the spot air conditioner, and FIG. 3 is a vertical cross-sectional side view thereof. Fig. 4 is an enlarged vertical cross-sectional view of the duct driving means, Fig. 5 is a cross-sectional view taken along the line 1-■ in Fig. 4, Fig. 6 is a schematic cross-sectional view showing the arrangement of each limit switch, and Fig. 7 is a blow-out duct. 8 is a longitudinal cross-sectional view of the same, and FIG. 8 is a cross-sectional view of the same. Figure 9 is a control block diagram of a spot air conditioner.
FIG. 10 is a control flow diagram of the same. 11 to 13 show the second embodiment, FIG. 11 is a longitudinal cross-sectional view showing the connection part of the blow-off duct corresponding to FIG. 4, FIG. 12(a) is a plan view of the fixing plate, FIG. 12(b) is a plan view of the movable plate, the first
3(a) is a plan view of the movable plate at the right end position of the air outlet duct, and FIG. 13(b) is the same plan view at the left end position of the air outlet duct. FIG. 14 is a plan view of the spot air conditioner when the blow-off duct is rotated. FIG. 15 is a characteristic diagram of the wind speed and temperature distribution of the cold air blown out. (1) Spot air conditioner, (2) Rotating drive means, (4) Drive mechanism, (5) Rotating machine tM
, (7a)...first limit switch, (7b)...
Second limit switch, (8)...Air volume adjustment means, (
9)... Intermediate drive means, (12)... Air conditioner main body,
(16)...Blowout duct, (16a)...Outer cylinder, (
16b)...Inner cylinder, (41)...Gard motor,
(75) - CPU, (75a) - automatic swinging means, (75
b)...Extension control means, (81)...Fixing plate, (8
2)...Movable plate, (83), (84)...Ventilation hole, (91)...Rack, (92)...Pinion,
(93)...Motor for expansion and contraction.

Claims (4)

[Claims] (1) An air conditioner main body (12) that sucks indoor air and generates conditioned air; and the air conditioner body (12) is rotatably attached to the air conditioner main body (12), and the duct length is formed to be expandable and contractible. A blow-off duct (16) that blows out air; and a rotation drive means (2) that rotates the blow-off duct (16) within a predetermined air conditioning area with respect to the air conditioner main body (12) to change the blow direction. , a telescopic driving means (9) for driving the blow-off duct (16) to change the length of the blow-off duct (16);
The telescopic driving means (9) is arranged such that the duct length is the shortest when the blowout duct (16) is located in the center of the air conditioning area, and the duct length becomes longer as the blowout duct (16) rotates to both sides of the air conditioning area. A spot air conditioner characterized by comprising: expansion/contraction control means (75b) for controlling. (2) The blow-off duct (16) is constructed by fitting an inner cylinder (16b) into an outer cylinder (16a) attached to the air conditioner main body (12) so as to be slidable in the axial direction and retractable. On the other hand, the intermediate drive means (9) includes a rack (91) formed in the axial direction on the outer surface of the inner cylinder (16b), and the rack (91).
) and a pinion (92) that meshes with the outer cylinder (16a).
and a motor (93) provided on the side to rotationally drive the pinion (92), and the expansion/contraction control means (75b) is configured to control the motor (93) in forward and reverse directions. The spot air conditioner according to claim (1). (3) An air conditioner body (12) that sucks indoor air and generates conditioned air; and an air conditioner body (12) that is rotatably attached to the air conditioner body (12) within a predetermined air conditioning area and blows the conditioned air. When the outlet duct (16) is located in the center of the air conditioning area, the amount of air conditioned air blown out is the smallest.
air volume adjusting means (
8) A spot air conditioner comprising: (4) The air volume adjustment means (8) is fixedly provided to the air conditioner main body (12), and includes a fixed plate (81) in which a fixed ventilation hole (83) is bored, and ) and a movable plate (82) provided to rotate as the blow-off duct (16) rotates, and a movable plate (82) in which a rotational ventilation opening (84) is bored; The overlapping area of the ports (83) and (84) is the smallest when the outlet duct (16) is located in the center of the air conditioning area.
4. The spot air conditioner according to claim 3, wherein the blow-off duct (16) is formed so that its overlapping area increases as the blow-off duct (16) rotates toward both sides of the air conditioning area.