JPH0765798B2 - 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 equalizing air conditioning.

(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 condenser fan and an evaporator fan are housed therein, 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 to perform 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 motor is driven to swing the blowout duct to ensure cooling in a wide range.

(Problems to be Solved by the Invention) In the above-described spot air conditioner, the blowing duct is swung to automatically swing. For example, the swing duct is automatically swung in the left-right direction to blow cold air to a plurality of workers. ing.

However, at each swing position of the blowout duct,
Since the duct length and the blown air volume are always constant, there has been a problem that comfort is different between the central portion and both side portions of the air-conditioning region where the blowing duct swings and air-conditions. That is, the fifteenth
As shown in the figure, the ambient temperature is 35 ℃, and the air volume is 5.5m ³ / mi.
Under the condition of n, the solid line (S) is the wind speed (m / s), the broken line (T) is the temperature difference (° C) from the ambient temperature, and when the cool air is blown from the blowing duct (a), the blowing duct As the distance (x) from (a) becomes longer, the wind speed becomes S ₁ = 5, S ₂ = 3, S ₃ = 2, S ₄
= 0, the temperature difference decreases to T ₁ = −6, T ₂ = −4, T ₃ = −2, T ₄ = −1, and the sensible temperature rises accordingly.

Therefore, as shown in FIG. 14, the spot air conditioner (b)
If a plurality of (three in the drawing) workers (H) are positioned in a row in a row in front of, the workers (H) located in the central part of the air-conditioning area will be separated by a distance (x ₁ ) Is short and sufficient comfort can be obtained, but the worker (H) located on both sides of the air-conditioning area has a long distance (x ₂ ) from the blowout duct (a), which is not comfortable. There was a problem.

The present invention has been made in view of such a point, and the air-conditioning is performed such that the duct length or the amount of blown air of the blowing duct is minimized at the central portion of the air-conditioning region and maximized at both sides. The object is to improve the comfort by enabling uniform air conditioning over the entire area.

(Means for Solving the Problem) In order to achieve the above-mentioned object, the means taken by the invention according to claim (1), as shown in FIG. 1, first sucks indoor air to generate conditioned air. An air conditioner main body (12) is provided, and the duct length is formed in the air conditioner main body (12) so that the duct length is expandable and contractable.
6) is rotatably provided. Further, a rotation driving means (2) for changing the blowing direction by rotating the blowout duct (16) with respect to the air conditioner body (12) within a predetermined air conditioning area.
And expansion / contraction drive means (9) for expanding / contracting the blowout duct (16) to change the duct length.
In addition, when the blowout duct (16) is located in the central portion of the air conditioning area, the duct length is the shortest, and the blowout duct (16) is
The extension / contraction control means (75b) for controlling the extension / contraction drive means (9) is provided so that the duct length becomes longer as the control unit rotates to both sides of the air conditioning area.

The means taken by the invention according to claim (2) is that in the invention according to claim (1), the blowout duct (16) is an inner cylinder to an outer cylinder (16a) attached to the air conditioner body (12). (16b) is slidably and retractably fitted in the axial direction, while the expansion / contraction drive means (9) is a rack (91 formed on the outer surface of the inner cylinder (16b) in the axial direction. ) And the rack (9
1) and a motor (93) provided on the outer cylinder (16a) side for rotating the pinion (92), and the expansion and contraction control means (75b) includes the motor (93b). 93) is configured to control forward / reverse rotation.

Further, the means taken by the invention according to claim (3) is, as shown in FIG. 11, replaced by the expansion and contraction driving means (9) and expansion and contraction control means (75a) in the invention according to claim (1). ,
When the blowout duct (16) is located in the center of the air conditioning area, the blowout amount of the conditioned air is the smallest, and the blowout duct (16).
Is provided with an air volume adjusting means (8) for adjusting the air volume such that the air volume of the conditioned air is increased as the vehicle rotates to both sides of the air conditioning area.

Further, the means taken by the invention according to claim (4) is the invention of claim (2), in which the air volume adjusting means (8) is fixedly provided to the air conditioner body (12), A fixed plate (81) having a fixed ventilation port (83) and a fixed plate (81) that is provided so as to overlap with the fixed plate (81) and to rotate with the rotation of the blowout duct (16), and to rotate. The movable plate (82) is provided with a ventilation opening (84), and both ventilation openings (8)
3) and (84) have the smallest overlapping area when the blowout duct (16) is located in the center of the air conditioning area, and the overlapping area increases as the blowout duct (16) rotates to both sides of the air conditioning area. It has a formed structure.

(Operation) 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, generates cold air or warm air and blows out the cold air or the like. It is blowing out from the duct (16). And the outlet duct (16)
Controls the rotation drive means (2) to reciprocally rotate in the air-conditioning area, and automatically swings to blow cool air or the like to the person to be air-conditioned.

When the blowing duct (16) is rotated, such as by automatically swinging, when the expansion / contraction control means (75b) controls the expansion / contraction driving means (9) and the blowout duct (16) is located in the center of the air-conditioning area, the duct Minimize the length and increase the duct length as the outlet duct (16) pivots to both sides of the air-conditioned area. Specifically, in the invention according to claim (2), the motor (93) is driven in accordance with the rotation of the blowout duct (16), and when the blowout duct (16) is located in the central portion of the air conditioning region, When the tube (16b) is immersed in the outer tube (16a) to minimize the duct length, and when located on both sides, the inner tube (16b) projects from the outer tube (16a) to maximize the duct length, By changing the duct length, the distance between the air-conditioning person and the blow-out duct (16) is adjusted to be almost constant.

Further, in the invention according to claim (3), when the blow duct (16) is rotated, such as by automatically swinging, the air volume adjusting means (8) determines that the blow duct (16) is located at the center of the air conditioning region. The amount of blown air is minimized, and the amount of blown air is increased as the blowout duct (16) rotates to both sides of the air conditioning region.
Specifically, in the invention according to claim (4), the movable plate (82) rotates with respect to the fixed plate (81) with the rotation of the blowout duct (16), and the blowout duct (16) moves. When located in the center of the air-conditioning area, the area where the ventilation openings (83) and (84) overlap is minimized.
When located on both sides, the overlapping area is maximized, and the passage area of cold air or the like is changed to adjust the amount of air blown to the person to be air-conditioned.

(Effect of the invention) Therefore, according to the inventions according to claims (1) and (2),
Since the duct length is shortened at the center of the air conditioning area and lengthened at both sides, as shown in Fig. 14, when the air-conditioned persons (H) are located side by side in a line, the air-conditioning objects on both sides are Since the distance (x ₂ ) between the person (H) and the blowing duct (16) can be made substantially equal to the distance (x ₁ ) between the person (H) to be air-conditioned in the center, each person (H) to be air-conditioned A sufficient amount of conditioned air can be received, and overall comfort can be improved.

Further, according to the invention of claim (3), since the amount of air blown out is small in the central part of the air-conditioning region and is large on both sides, the person to be air-conditioned (H) and the blowing duct (16) on both sides. Although the distance (x ₂ ) from the air conditioner becomes longer and the air volume increases, each person to be air-conditioned can receive sufficient air-conditioned air, and the overall comfort can be improved.

According to the invention of claim (4), the movable plate (82)
Rotates in accordance with the rotation of the blowout duct (16) and adjusts the air volume, so that the air volume can be accurately adjusted without providing any control means.

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

As shown in FIG. 2 and FIG. 3, (1) is a spot air conditioner, which is provided in various factories or the like and blows cool air to a person to be air-conditioned such as an operator to perform local cooling.

The spot air conditioner (1) is configured such that an air conditioner body (12) is mounted on a wagon (11) having casters (11a) so as to be movable, and the wagon (11) has an upper stage portion (11b).
And the lower part (11c). And
The air conditioner body (12) includes a compressor (12a) and a condenser (12a).
b), an expansion mechanism (not shown) and an evaporator (12c) are provided with a refrigerant circuit (not shown) connected by a refrigerant pipe, and the compressor (12a) has a lower stage portion of the wagon (11) ( 11
In the lower part (11c), a drain tank (13), an electric box (14), etc. are housed in the housing (15) of the air conditioner body (12) in the lower part (11c). Have been installed.

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 condenser fan (12e) and an evaporator fan (12f)
And are connected and stored. Further, a condensing side exhaust port (15b) is opened in the upper surface plate (15a) of the housing (15), and the discharge duct (16) is rotated and driven (2).
The outlet duct (16) is connected to the discharge port (12g) of the fan (12f) for the evaporator through the top plate (15a) of the housing (15). . Then, the indoor air sucked from the side surface of the housing (15) is heat-exchanged by the evaporator (12c), and the blowout duct (1
6) It is configured to blow cool air toward the air-conditioned person.

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). .

As shown in FIGS. 4 and 5, the rotation driving means (2) rotates the drive mechanism (4) inside the casing (3) attached to the top plate (15a) of the housing (15). The moving mechanism (5) is housed and configured. The casing (3) is formed into a flat box body having an open lower surface, and the side walls (31), (32) which are flat in the right half of the plan view of FIG. 5 with the cold air blowing side (F side in FIG. 5) as the front surface. ), (33), a drive mechanism housing (21) and a rotation mechanism housing (22) surrounded by a substantially semicircular side wall (34) are formed in the left half of FIG. The flanges (3a) at the lower ends of the side walls (32) to (34) are fixed to the housing (15).

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 is continuous with the front side wall (34), and the annular guide portion (37) of the rotating mechanism (5).
Are configured. Further, on the side walls (31) to (34) and the guide wall (36), the lower support plate (23) of the drive mechanism (4) and the rotating mechanism (5) and the motor mounting plate (24) are fixed columns ( 3
8), (38), ..., and the lower support plate (2
An opening (23a) communicating with the discharge port of the fan (12f) for the evaporator is formed in 3), and an annular folding piece (23b) is formed in an L-order shape at the periphery of the opening (23a). ing.

The drive mechanism (4) is formed by connecting a worm gear (42) and a belt transmission mechanism (43) to a geared motor (41), and in the geared motor (41), the motor body (41a) is attached to the motor mounting plate (24). The drive shaft (41b) is fixedly supported and is laterally installed so as to be parallel to the upper surface wall (35).

In the worm gear (42), the worm (42a) is fitted and fixed to the drive shaft (41b), and the worm (42a) is
The worm wheel (42b) meshing with a) utilizes the gap between the guide wall (36) and the side wall (33) to form the shaft (44).
Is provided by being fitted. The shaft (44) is vertically supported by an upper receiving plate (not shown) fixed to the side wall (33) and a lower receiving plate (23), and the worm wheel (42b) is fixed to the upper part. ing. Further, the belt transmission mechanism (43) is provided at the lower end of the shaft (44).
The timing pulley (46) is fitted with the toothed belt (47) on the outer peripheral surface of the timing pulley (46).

On the other hand, the rotating mechanism (5) is formed by connecting the blowout duct (16) 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 and supported by the annular guide part (37), and the lower part is fitted and supported by the folded piece (23b) of the lower receiving plate (23). The opening (35) is formed in the inner peripheral portion of the upper end surface of the rotary cylinder body (51a).
The annular extension piece (51b) facing a) is formed with a strip-shaped projection (51c) on the upper outer peripheral surface and a tooth portion (51d) on the lower outer peripheral surface. Belt transmission mechanism (4
The belt (47) from 3) is hooked.

Further, the upper end surface of the rotary cylinder body (51a) and the upper surface wall (35)
An upper thrust seat (53) is interposed between the lower thrust seat (53) and the lower support plate (23), and an upper thrust seat (54) is interposed between the lower end surface and the lower support plate (23). An upper radial seat (55) is interposed between the outer peripheral surface and the annular guide portion (37), and a lower radial seat (56) is interposed between the lower inner peripheral surface and the folding piece (23b). . Furthermore, the elbow (5
Mounting flanges (57), (57), ... for fixing 2) are provided in a protruding manner, and the lower end of the elbow (52) has a rotary cylinder (5).
Fixed pillars (58), (58), ... which are fitted to the annular extension piece (51b) of 1) and are bulged on the inner peripheral surface of the lower part, and the mounting flanges (57), (57), ... And are fixed with screws.

On the other hand, a notch (not shown) is formed in the lower portion of the guide wall (36), and a stopper (61) facing the notch is provided on the outer peripheral surface of the upper portion of the rotary cylinder body (51a). . The stopper (61) is in contact with both end surfaces of the notch to forcibly limit the rotation of the rotating cylinder (51), that is, the blowout duct (16), and the rotation range is , 110 degrees, for example.

Further, in front of the motor body (41a), as shown in FIG. 6, one first limit switch (7a) for restricting the automatic swing range (air conditioning area) of the blowout duct (16) is provided. Has been. The first limit switch (7a) is composed of a micro switch or the like, is provided by utilizing a gap formed by the guide wall (36) and the flat side wall (32), and is connected to the side wall (32). It is attached to the support piece (39) provided. The probe (71a) of the first limit switch (7a) is provided so as to come into contact with the outer peripheral surface of the rotary cylinder body (51a) below the stopper (61).

On the other hand, a first protrusion (62) and a second protrusion (63) with which the probe (71a) abuts are provided on the outer peripheral surface of the rotary cylinder body (51a). The both protrusions (62) and (63) are formed in the axial direction (vertical direction) of the rotary cylinder body (51a), and the first protrusion (62) is located at the right end restricted position of the air conditioning area of the blowout duct (16). , The second protrusion (63) is provided at the left end restricted position, respectively, and the geared motor (41) is controlled by the position signal of the first limit switch (7a) so that the blowout duct (16) swings. The automatic swing range (air-conditioning region) is set to be slightly smaller than the rotation range of the stopper (61), for example, set to 100 degrees.

Further, in the casing (3), there is a blowout duct (16).
Is provided with a second limit switch (7b) for detecting the central position of the second limit switch (7b).
b) is composed of micro switches and the like. And
The second limit switch (7b) is provided so that the probe (71b) contacts and separates from the second protrusion (63), and outputs a position signal when the probe (71b) contacts the second protrusion (63). Made of

On the other hand, as a feature of the present invention, the blow-out duct (16) includes an outer cylinder (16a) and an inner cylinder (16) as shown in FIGS. 7 and 8.
b) is slidably and retractably inserted. 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). Further, the outer peripheral portion of the outer cylinder (16a) and the outer peripheral portion of the rear end of the inner cylinder (16b) have convex portions (16c),
(16d) is formed so as to project in a circular shape, and each of the protrusions (16c),
(16d) is a sliding sheet (16
e) and (16f) are provided.

Further, the blow-out duct (16) is provided with an expansion / contraction driving means (9) for expanding / contracting the length of the duct, and the expansion / contraction driving means (9) is provided on the outer surface of the lower portion of the inner cylinder (16b) with a rack ( 9
1) A pinion (92) which is formed in the axial direction over both front and rear ends of the inner cylinder (16b) and meshes with the rack (91).
Are connected to the motor (93). And
The pinion (92) and the motor (93) are housed in a recess (16g) formed on the lower surface of the tip of the outer cylinder (16a) so that the inner cylinder (16b) is driven by the motor (93). It is configured to project from the tip of the outer cylinder (16a).

FIG. 9 shows a control block diagram of the spot air conditioner (1), including the limit switches (7a) and (7b).
The position signal output by the CP is included in the control unit (73).
It is configured to be input to U (75) and the CPU
A mode signal output from a mode selector switch (76) for switching the blowout duct (16) between a fixed mode and an automatic swing mode is input to the (75). Also,
In the control unit (73), a memory (77) including a ROM storing program data for realizing a control flow described later and a RAM storing processing data is a CPU.
The RAM (77) is connected to the memory (77), and the storage area of the RAM in the memory (77) includes a flag (F), while the control unit (73) includes various timers (TM1), although not shown. (TM2) is included.

The control unit (73) further includes a right rotation drive circuit (78a) and a left rotation drive circuit (78b) for the geared motor (41), and a first air conditioning control means (79).
A relay drive circuit (78c) for the relay (RY1) and the second relay (RY2) is provided so as to be connected to the CPU (75). The geared motor (41) drives the right rotation and left rotation drive circuits (78a) based on the output signal of the CPU (75).
(78b) controls forward and reverse rotation, while both relays (R
Y1) and (RY2) are configured to be ON / OFF controlled by the relay drive circuit (78c) based on the output signal of the CPU (75). Further, the fan control relay (X) included in the air conditioning control means (79) is constituted by the both 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 (79) is provided with the fans (12e), (12f) and the compressor (12
It is configured to control a) by controlling a). Further, the expansion / contraction motor (9) is connected to the CPU (75) via the expansion / contraction drive circuit (78d) included in the control unit (73).
3) is connected.

On the other hand, in the CPU (75), the gard motor (4) of the rotation drive means (2) is arranged so that the blowout duct (16) reciprocally rotates.
The automatic swinging means (75a) for controlling 1) is constructed, and the expansion / contraction controlling means (75b) for controlling the expansion / contraction driving means (9) so that the duct length of the blowout duct (16) is expanded / contracted.
Is configured.

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

First, in the refrigerant circuit (not shown) of the air conditioner body (12), the compressor (12a) is driven to circulate the refrigerant,
Drive the fans (12e), (12f) for the condenser and the evaporator, and suck indoor air from one side of the housing (15),
Heat is exchanged in the condenser (12b) to exhaust hot air from the exhaust port (15b), indoor air is sucked in from the other side of the housing (15), and heat is exchanged in the evaporator (12c) to produce cold air. The generated cold air is blown from the blowing duct (16) toward the air-conditioned person.

Next, control of the blowout duct (16) will be described based on the control flow shown in FIG. The mode switch (76) is set to the automatic swing mode.

First, in step ST1, initialization is performed,
For example, after resetting the flag (F) or the like, the geared motor (41) is normally or reversely rotated. The rotation of the geared motor (41) is transmitted to the rotary cylinder (51) via the worm gear (42) and the belt transmission mechanism (43),
The rotating cylinder (51) rotates and the outlet duct (16) rotates, for example, from the left end of the air conditioning area. Then
In step ST2, it is determined whether or not the first limit switch (7a) has output a position signal, and the first limit switch (7a) does not come into contact with the protrusions (62) and (63) and the position signal is output. Is not output, that is, when the blowout duct (16) is in the middle of rotation, the process proceeds to step ST3, the half rotation timer (TM1) is stepped to step ST4, and the half rotation timer (TM1) It is determined whether or not the preset half-turn time (t ₁ ) has been counted. This half rotation time (t ₁ ) is the time required for the outlet duct (16) to rotate from one rotation limit position to the other rotation limit position, that is, from the right end to the left end or from the left end to the right end. It is set to the time required to move. Then, the process proceeds to step ST5 until the reversal time (t ₁ ) elapses, and the second limit switch (7b)
Determines whether or not it has output a position signal, and if the position signal has not been output, it proceeds to step ST6, continues to drive the telescopic motor (93) as it is, returns to step ST3, and repeats this operation. become. That is, the outlet duct (16) is located at the left end of the air-conditioning area, the inner cylinder (16
b) is the most protruding from the outer cylinder (16a) (see FIG. 14), and is expanded and contracted by the signal from the expansion and contraction drive circuit (78d) as the outlet duct (16) is rotated from the left end toward the center. The motor (93) is driven and the inner cylinder (93b) is the outer cylinder (16a)
The length of the duct becomes shorter due to the immersion inside.

After that, when the outlet duct (16) rotates to the center of the air-conditioning area while repeating the operations of steps ST2 to ST6, the inner cylinder (16b) is most deeply retracted into the outer cylinder (16a) and the duct. The minimum length (see Figure 14) and the second
The limit switch (7b) contacts the second protrusion (63) and outputs a position signal. With this position signal, the above step ST5
As a result, the process proceeds to step ST7, and after the expansion / contraction motor (93) is stopped, it reverses and returns to step ST6.
That is, when the blowout duct (10) rotates to the right of the air-conditioning region, the inner cylinder (16b) begins to project, and the duct length increases as the blowout duct (16) rotates. The half-turn time (t ₁ ) is monitored while expanding and contracting the blow-out duct (16) (step ST4), and normally the blow-out duct (16) is located at the right end or the left end within this half-turn time (t ₁ ). 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 ( 16
b) is the most protruding and the duct length is maximum (see Fig. 14).

When receiving the position signal of the first limit switch (7a), the process moves from step ST2 to step ST8, resets the half rotation timer (TM1), and then moves to step ST9 to check whether the outlet duct (16) is rotating to the right. It is determined whether or not. That is,
The duct rotation direction before the position signal of the first limit switch (7a) is output is determined, and since it is currently rotating clockwise in the clockwise direction in FIG. 5, the output signal of the CPU (75) Based on this, since the clockwise rotation drive circuit (78a) is turned on via the drive transistor (not shown), this CPU (75)
From the output of, the duct rotation direction is determined to be right rotation, and the step
Move from ST9 to step ST10, and drive circuit for right rotation (7
8a) is turned off to stop the right rotation of the outlet duct (16), and at the same time, the left rotation drive circuit (78b) is driven through another drive transistor (not shown) based on the output signal of the CPU (75).
Is turned on, and the outlet duct (16) is rotated counterclockwise in Fig. 5 counterclockwise.

Subsequently, the operation proceeds from step ST10 to step ST11 to step the output stop timer (TM2), and then to step ST12 to stop the telescopic motor (93) and move to step ST13. TM2) determines whether or not the preset output stop time (t ₂ ) has been counted, the process proceeds to step ST14 until the output stop time (t ₂ ) elapses, and the first limit switch (7a) It is determined whether or not the output of the position signal has stopped, and until the output stops, step ST11
Then, the operation up to step ST14 described above is repeated. During this output stop time (t ₂ ), the probe (71a) of the first limit switch (7a) comes into contact with the first protrusion (62) and the outlet duct (16) is inverted, so that the first protrusion (62) causes the probe to stop. is set to a time required for the distance from (71a), usually the first protrusion in the output stop time (t ₂₎ (6
2) is set apart from the probe (71a) and the position signal output of the first limit switch (7a) is stopped. Therefore, if the output of the first limit switch (7a) stops within the output stop time (t ₂ ), the process moves from step ST14 to step ST15, resets the output stop timer (TM2), and then moves to step ST16 to expand and contract. After driving the motor (93) for the blow duct (16) to start expanding and contracting again, the process returns to step ST6 described above, and the operations from step ST2 to step ST7 are repeated again at a predetermined timing. The duct length of (16) is shortened to the central part of the air-conditioning area, and it is lengthened again by turning it to the left.

After that, the outlet duct (16) rotates counterclockwise to move the first duct.
When the limit switch (7a) contacts the second protrusion (63) and outputs a position signal, the duct rotation direction before the position signal is output can be identified by the output of the CPU (75) in step ST9. Contrary to the previous right end position, the left rotation drive circuit (78b) is turned off, the right rotation drive circuit (78a) is turned on, and the outlet duct (16) is rotated right again. Thereafter, the operation of step ST18~ST21 like the beginning left rotation step ST10~ST14 described above, to operate the output stop timer (TM2), first the output stop time (t ₂₎ in the
When the output of the limit switch (7a) stops, the step
It will move to ST15. By repeating this operation, the blow-out duct (16) is reciprocally rotated in the air-conditioning region of 100 degrees to perform the automatic swinging motion, and at the same time, it is expanded and contracted to blow cold air into the air-conditioning region.

And this step ST1 to step ST5 and step
ST8 to step ST15 and step ST17 to step S
While T21 constitutes the automatic swing means (75a), the expansion / contraction control means (75b) is constituted by steps ST6, ST7, ST12, ST16 and ST19.

Next, during this automatic swing operation, when the half rotation timer (TM1) counts the half rotation time (t ₁ ) in step ST4 and the time is up, the process proceeds to step ST22 and the first limit switch (7a) and the guard motor are moved. The abnormality processing operation of (41) is started, and the process proceeds to step ST23 to perform the abnormality processing.

That is, since the first limit switch (7a) is set to output the position signal at a predetermined cycle within the half-turn time (t ₁ ), use this regular signal output,
If the position signal is not output within the half turn time (t ₁ ), an abnormality will be determined. In a specific example, when the geared motor (41) fails and the rotation speed of the blowout duct (16) decreases or is not rotated, the first limit switch (7
In a), if there is no signal output due to a short circuit, etc., and normal swing control cannot be performed, stop the gear motor (41) in step ST23, Abnormal processing such as stopping the motor (93) will be performed.

In the automatic swing operation, when the output stop timer (TM2) counts the output stop time (t ₂ ) in step ST13 or step ST20 and the time is up, when the counterclockwise rotation starts, step ST13 changes to step ST24. After resetting the output stop timer (TM2), move to step ST25, judge whether the flag (F) is set, and if the output stop timer (TM2) has timed out from the normal control state. Since the flag (F) is "0", the process moves from step ST25 to step ST26, sets the flag (F) and moves to step ST17. on the other hand,
If the output stop timer (TM2) times out at the start of clockwise rotation, the same as at the start of counterclockwise rotation described above, step ST20
After that, the operations of steps ST27, ST28, and ST29 are performed, the output stop timer (TM2) is reset, the flag (F) is determined and set, and then the process proceeds to step ST10.

That is, since the detection signal of the first limit switch (7a) is set to be output within the output stop time (t ₂ ) until the rotation of the outlet duct (16) is reversed,
By utilizing this regular output stop, if the output of the position signal does not stop within the output stop time (t ₂ ), abnormality or erroneous control will be determined. Therefore, as described above, for example, when the output stop timer (TM2) is timed out when the left rotation start control is performed in step ST10 (steps ST24 to ST26), subsequently, in step ST17, the outlet duct (16) The right rotation control is performed to rotate in the opposite direction. Then, when the output of the first limit switch (7a) is stopped by this right rotation control, the control in step ST10 is determined to be erroneous control, and
Normal processing will be performed from ST21. On the other hand, if the first limit switch (7a) continues to output the position signal even if the right rotation control is performed in step ST17, the process moves from step ST20 to steps ST27 and ST28, and the flag (F) is set in step ST26. Therefore, the process proceeds to steps ST30 and ST23, and similarly to step ST22 described above, the abnormality of the first limit switch (7a) or the geared motor (41) is determined,
The geared motor (41) will be stopped and abnormal processing will be performed.

In step ST17, when the output stop timer (TM2) times up for the first time during the right rotation control, the process moves from step ST20 to step ST27 to perform the left rotation control once and the output of the first limit switch (7a) stops. Then, the normal process (step ST14) is performed, and if the output is continued, the abnormal process (step ST30) is performed.

On the other hand, the above-described automatic swing control is a case where the duct rotation direction before the position signal output of the first limit switch (7a) can be identified, but cannot be identified at the time of starting the automatic swing control such as at the start-up. There are cases. That is, at the time of start-up, etc., the probe (71) of the first limit switch (7a)
When a) contacts one of the protrusions (62) and (63) and the first limit switch (7a) outputs a position signal,
Since it is only the signal from one first limit switch (7a), it is unknown whether the outlet duct (16) is located at the right end or the left end, and whether it starts from left rotation or right It is not possible to identify whether the rotation starts.

Therefore, using the point that the output of the position signal of the first limit switch (7a) stops regularly,
The duct rotation direction is identified by the operation of ST13, ST20, and ST24 to ST29.

First, at the time of start-up, it is set to rotate the blowout duct (16) in either the left or right direction, for example, it is set to start left rotation.
Then move to step ST10, rotate the geared motor (41), perform the operations from step ST11 to ST14, and see if the first limit switch (7a) stops signal output within the output stop time (t ₂ ). To judge. At that time, the outlet duct (16) is located at the right end, and the first limit switch (7a)
When the position signal is output by the first protrusion (62), it is in the state of rotating counterclockwise, so that the position signal output is stopped within the output stop time (t ₂ ). After moving to ST15, normal swing control is performed.

On the other hand, when the left rotation is started in step ST10, the outlet duct (16) is located at the left end, and the first limit switch (7
When the position signal is output by the second protrusion (63) in (a), the output stop timer (TM2) will be timed up while the position signal is being output because it is the state that should be rotated to the right. Step ST17 through ST24 to ST26
And will start rotating right. Then, since the outlet duct (16) is in a state where it should rotate clockwise, the output of the first limit switch (7a) stops within the output stop time (t ₂ ), and normal swing control is performed from step ST21. Be seen.

Further, in step ST9, it may be started from the clockwise rotation operation, in which case, from step ST17
The process moves to ST27 to ST10 and operates in the same manner as described above.

That is, the blowing duct (16) is rotated left and right for a minute time, and the duct rotation direction is identified by stopping the output of the position signal.

Therefore, since the duct length is shortened at the center of the air-conditioning area and lengthened at both sides, as shown in FIG. 14, when the air-conditioned persons (H) are located side by side in a line, Since the distance (x ₂ ) between the air conditioning target person (H) and the outlet duct (16) can be made substantially equal to the distance (x ₁ ) between the central air conditioning target person (H), each air conditioning target person (H ) Can receive sufficient conditioned air to improve overall comfort.

11 to 13 show another embodiment, in this embodiment, instead of changing the duct length in the previous embodiment,
The amount of blown air is changed. That is, the duct drive means (2) is provided with the air volume adjusting means (8) at the communication portion between the air conditioner body (12) and the blowout duct (16). The air flow rate adjusting means (8) is configured to change the air passage area which is the cross section of the rotary cylinder (51) to adjust the blowing air volume of the cold air, and the lower receiving plate (23) has a fixed plate (81). However, a movable plate (82) is formed on the rotary cylinder (51).

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 traverse the inside of the rotary cylinder (51). And is fixed to the air conditioner body (12). Further, the fixed plate (81) is provided with a fixed ventilation port (83), and the fixed ventilation port (83) is composed of a main ventilation port (83a) and a sub ventilation port (83b). There is. The both ventilation ports (83a), (83b) are formed in a fan shape around the center of rotation of the rotary cylinder (51), and the main side of the main duct is the cold air blowing side (A side) of the blowing duct (16). The ventilation port (83a) is formed in the front part, and the sub ventilation port (83b) is formed in the rear part. Further, the main ventilation opening (83a) is formed symmetrically with respect to the center (B) of the air-conditioning region (100 degrees) where the air outlet duct (16) rotates to air-condition, and the central angle (α ₁ ) Is formed with an obtuse angle, for example, 210 degrees. The sub-ventilation openings (83b) are formed symmetrically with respect to the center (B) of the air-conditioning area, and the central angle (α ₂ ) is formed at an acute angle, for example, 50 degrees. Then, the space between the main ventilation port (83a) and the sub ventilation port (83b) is located on the right side shielding part (81
a) and the left shield (81b), and both shields (81
The a) and (81b) are formed in a fan shape having a central angle (α ₃ ) of an acute angle, for example, 50 degrees.

On the other hand, as shown in FIG. 12 (b), the movable plate (82) is superposed on the upper surface of the fixed plate (81) and has an outlet duct (16).
The rotary cylinder (51) is formed at a lower part of the rotary cylinder (51) so as to rotate with the rotation of the rotary cylinder (51). Furthermore,
The movable plate (82) is provided with a movable ventilation port (84), and the movable ventilation port (84) includes a front ventilation port (84a), a right ventilation port (84b) and a left ventilation port (84). 84c) and. Each of the ventilation openings (84a) to (84c) is formed in a fan shape around the rotation center of the rotary cylinder (51) like the fixed ventilation opening (83), and the cooling air blowing side of the blowing duct (16). (A
Side) as the front, the front ventilation opening (84a) is forward,
The right vent (84b) is on the rear right side, and the left vent (84c)
Are formed on the rear left side, respectively. Further, the front ventilation opening (84a) is formed symmetrically with respect to the center (B) of the air-conditioning region, is larger than the left and right ventilation openings (84b), (84c), and has a central angle (β ₁ ) of an obtuse angle, for example, , 110 degrees. In addition, the left and right ventilation openings (84b), (84
c) is formed in a symmetrical position with the center (B) of the air-conditioning region as the center line, and both shielding parts (81) of the fixing plate (81) are formed.
Corresponding to a) and (81b), the central angle (β ₂ ) is formed at an acute angle, for example, 50 degrees. Then, each of the above vents (84
Between a) and (84c) the rear shield (82a) and right shield (8
2b) and the left shield part (82c). The rear shielding part (82a) corresponds to the sub-ventilation port (83b) when the air outlet duct (16) is located in the central part of the air conditioning area, and the central angle (β ₃ ) is an acute angle, for example, 50 degrees. It is formed in a fan shape. In addition, the right-side shielding portion (82b) is connected to the outlet duct (1
When 6) is located on the right side of the air conditioning area, the left side shield (82a) is attached to the right side shield (81a) of the fixed plate (81).
c) corresponds to the left-side shielding portion (81b) of the fixing plate (81) when the outlet duct (16) is located on the left side of the air conditioning area, and the central angle (β ₃ ) is an acute angle, for example, 50 It is shaped like a fan. When the blowout duct (16) is located in the center of the air-conditioning area, the main ventilation port (83a) of the fixed plate (81) and the front ventilation port (84a) of the movable plate (82) communicate with each other, while When (16) rotates to either the left or right, in addition to the main ventilation opening (83a) and the front ventilation opening (84a),
The sub-ventilation port (83b) of the fixed plate (81) and the right or left ventilating ports (84b), (84c) of the movable plate (82) are further opened to increase the amount of blown air.

In this embodiment, unlike the previous embodiment, the outlet duct (16) is formed by one duct, while the second limit switch (7b) and expansion control means (75) in FIG. 9 are used.
b) The extension drive circuit (78d) and the extension motor (93) are not provided.

Next, the air volume adjusting operation will be described. First, when the swing duct (16) is automatically swung, the blow duct (1
When 6) is located in the center of the air conditioning area, as shown in FIG. 12 (b), the front ventilation port (84a) of the movable plate (82) is located on the main ventilation port (83a) of the fixed plate (81). Both vent holes (83a) and (84a) communicate with each other, while the sub-ventilator (83b) of the fixed plate (81) is closed to coincide with the rear shield part (82a) of the movable plate (82). The right and left ventilation openings (84b), (84c) of the movable plate (82) are closed in conformity with the right and left shielding parts (81a), (81b) of the fixed plate (81). Therefore, the cold air is discharged only through the front ventilation opening (84a) of the movable plate (82), the passage area is the smallest and the blown air volume is the smallest.

Then, when the outlet duct (16) is rotated to the right, the front ventilation opening (84a) is rotated over the main ventilation opening (83a) to move both ventilation openings (84a) as shown in FIG. 13 (a). ), (83a) are in communication with each other, but the right vent (84) of the movable plate (82)
b) the movable plate (8) to the sub-ventilation port (83b) of the fixed plate (81).
When the left ventilator (84c) of 2) starts to communicate with the main ventilator (83a) of the fixed plate (81) respectively, and the blowout duct (16) rotates to the right end restricted position, all of the movable plate (82) Vent (84
a) to (84c) will be opened. When the outlet duct (16) rotates to the left, the 13th position is reversed, contrary to the right rotation.
As shown in Fig. (B), the left ventilator (84c) is connected to the sub ventilator (83b) and the right ventilator (84a) remains in communication with the main ventilator (83a). 84b) starts to communicate with the main ventilation opening (83a), and when the blowout duct (16) rotates to the left end restricted position, all the ventilation openings (84a) of the movable plate (82) ...
(84c) will open. Therefore, the outlet duct (1
When 6) turns to the right or left, the passage area gradually increases, the amount of cold air blown out increases, and the amount of air blown out is maximized at both ends of the air-conditioning area. With a small air volume, cool air will be blown to the air-conditioned persons on both sides with a large air volume.

In addition, although the above-mentioned embodiment explained the automatic swing of the blowout duct (10), even when the blowout duct (16) is stationary, if the person to be air-conditioned rotates the blowout duct (16) manually. , The amount of blown air will change.

Therefore, since the amount of blown air is reduced in the central part of the air-conditioning area and increased in both sides, as shown in FIG. Although the distance (x ₂ ) between the target person (H) and the air outlet duct (16) is long, the air volume is large, so each air-conditioned person can receive sufficient conditioned air, which improves overall comfort. Can be improved.

Further, since the movable plate (82) rotates in accordance with the rotation of the blowout duct (16) and adjusts the air volume, the air volume can be accurately adjusted without providing any control means.

In addition, although each of the above-described embodiments has described the movable spot air conditioner, the present invention may be applied to a duct type spot air conditioner.

Further, two or more blowout ducts (16) may be provided, and the blowout duct (16) may be pivotally supported on the housing (15) by a pin or the like for rotation.

Further, the blow-out duct (16) is provided with a human detection sensor at the tip of the blow-out duct (16) and the like so that the blow-out duct (16) follows the movement of the air-conditioned person based on the detection signal of the human detection sensor. You may

Further, the air volume adjusting means (8) in the second embodiment is not limited to the installation position in the duct driving means (2), and the shapes of the ventilation openings (83) and (84) are also limited to those in the embodiment. is not.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of the invention according to claim (1). 2 to 10 show the first embodiment and the second embodiment
The figure is a cross-sectional front view of the spot air conditioner, and FIG. 3 is a longitudinal side view of the same. FIG. 4 is an enlarged sectional view of the duct drive means,
5 is a cross-sectional view taken along the line I-I in FIG. 4, FIG. 6 is a schematic cross-sectional view showing an arrangement state of each limit switch, FIG. 7 is a vertical cross-sectional view of the blowing duct, and FIG. Is. FIG. 9 is a control block diagram of the spot air conditioner, and FIG. 10 is a control flow chart thereof. 11 to 13 show the second embodiment, FIG. 11 is a longitudinal sectional view showing a connecting portion of the blowing duct corresponding to FIG. 4, FIG. 12 (a) is a plan view of the fixing plate, 12 (b) is a plan view of the movable plate, FIG. 13 (a) is a plan view of the movable plate at the right end position of the blowing duct, and FIG. 13 (b) is a plan view of the left end position of the blowing duct. . FIG. 14 is a plan view of the spot air conditioner showing the rotation of the outlet duct. FIG. 15 is a characteristic diagram of the wind speed and temperature distribution of the blown cold air. (1) …… Spot air conditioner, (2) …… Rotation drive means, (4) …… Drive mechanism, (5) …… Rotation mechanism, (7a)
...... First limit switch, (7b) ...... Second limit switch, (8) ...... Air volume adjusting means, (9) ...... Expanding drive means, (12) ...... Air conditioner body, (16) ...... Blowout duct,
(16a) …… Outer cylinder, (16b) …… Inner cylinder, (41) …… Gard motor, (75) …… CPU, (75a) …… Automatic swinging means,
(75b) …… Expansion control means, (81) …… Fixing plate, (82)
...... Movable plate, (83), (84) ...... Ventilation port, (91) …… Rack, (92) …… Pinion, (93) …… Telescopic motor.

Front page continuation (72) Inventor Naofumi Takenaka 1304 Kanaoka-cho, Sakai City, Osaka Daikin Industry Co., Ltd. Sakai Plant Kanaoka Factory

Claims (4)

[Claims] 1. An air conditioner main body (12) for sucking indoor air to generate conditioned air, and rotatably attached to the air conditioner main body (12),
The duct length is formed to be expandable and contractable, and the blowout duct (16) for blowing out the conditioned air and the blowout duct (16) are rotated within a predetermined air conditioning area with respect to the air conditioner body (12). The rotation driving means (2) for changing the blowing direction, the expansion / contraction driving means (9) for expanding / contracting the blowing duct (16) to change the duct length, and the blowing duct (16) serve as an air conditioning area. The expansion / contraction control means for controlling the expansion / contraction driving means (9) so that the duct length is the shortest when located at the central portion, and the duct length becomes longer as the blowout duct (16) rotates to both sides of the air conditioning region. (75b) with spot air conditioner. 2. A blow-out duct (16) is constructed by fitting an outer cylinder (16a) attached to an air conditioner body (12) with an inner cylinder (16b) so as to be slidable in the axial direction and retractable. On the other hand, the expansion and contraction driving means (9) includes a rack (91) formed in the axial direction on the outer surface of the inner cylinder (16b), a pinion (92) meshing with the rack (91), and the outer side. It is composed of a motor (93) provided on the side of the cylinder (16a) and rotationally driving the pinion (92), and the expansion and contraction control means (75b) is configured to control the motor (93) in the forward and reverse directions. The spot air conditioner according to claim 1, characterized in that: 3. An air conditioner main body (12) for sucking indoor air to generate conditioned air, and rotatably attached to the air conditioner main body (12) within a predetermined air conditioning region, When the blowout duct (16) for blowing out air and the blowout duct (16) are located in the center of the air conditioning area, the amount of air blown out of the conditioned air is the smallest, and the blowout duct (16) rotates to both sides of the air conditioning area. Air volume adjusting means (8) for adjusting the air volume so that the air volume of the conditioned air is increased according to
Spot air conditioner characterized by having and. 4. An air conditioner body (12) for the air volume adjusting means (8).
It is fixedly installed against the fixed ventilation port (83)
Is provided so as to be superposed on the fixed plate (81) and is rotated with the rotation of the blowout duct (16), and the rotary ventilation port (84) is provided. The blower duct (16) is composed of a movable plate (82) that is perforated, and has the smallest overlapping area when the blowout duct (16) is located at the center of the air-conditioning area. 4. The spot air conditioner according to claim 3, wherein the spot air conditioner is formed so that the overlapping area increases as it rotates to both sides of the air conditioning region.