JPS593313Y2 - Blower unit for local air conditioning - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a blow-off unit for local air conditioning.

Conventionally, local air conditioners, such as spot coolers, have a duct connected to the outlet of the air conditioner's casing via a base flange, and the tip opening of this duct is placed at the work area. Are known.

However, in such conventional local air conditioners, the air conditioning area, that is, the cold air area in summer and the warm air area in winter, is limited by the duct diameter.
The air-conditioning area cannot be expanded, and it is difficult to provide comfortable working conditions by adequately supplying cold or warm air to mobile workers.

Therefore, conventionally, when a worker performs moving work that takes him away from the air conditioning area, he has to change the direction of the duct each time or perform the work without a supply of cold or hot air. In addition, if you want to achieve complete local air conditioning, you will need one local air conditioner for each worker, which has the disadvantage of high equipment and maintenance costs. Furthermore, when the tip of the duct is very close to the worker, the strong convergent flow from the duct causes the cold or warm air to hit only a part of the worker's body, causing discomfort to the worker. There were various drawbacks such as giving.

This invention was devised in view of the above points, and it is possible to widen the air conditioning area by widening the blowing angle of cold air or hot air from the blow-off port at the front of the casing, making it easier for mobile workers. In addition to providing good working conditions, the blow-off unit can be easily attached to and removed from the blow-off outlet or duct on the local air conditioner side, making it easy for one or more workers. The purpose of the blow-off unit is to make it easy to install and remove the blow-off unit when performing local air conditioning.

Therefore, the present invention communicates the air inlet at the back of the casing with the outlet at the front of the casing through the wind barrel inside the casing, and provides a plurality of vertical lines near the outlet between the air inlet and the outlet. While the blades are pivotally mounted so as to be able to swing, a connecting rod is interlocked with the rotating shaft of a motor installed in the casing via a motion direction conversion mechanism that converts circular motion into reciprocating linear motion, and this connecting rod is connected to the vertical axis of the motor installed in the casing. The blade is connected to one end of each blade to swing the vertical blade, and the back of the casing where the air inlet is located is removable from the cylindrical outlet of the casing of the air conditioner main body or the tip of the cylindrical duct. A plurality of slits with open ends are formed at appropriate intervals in the cylinder, and a tightening band is provided on the outer surface of the cylinder.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 is a side view of a local air conditioner equipped with a blow-off unit for local air conditioning according to the present invention. A suction port 3 is formed at the top, and a blowout port 4 is formed at the upper part of the front surface, and a base flange 5 is attached to the blowout port 4.

Further, the local air conditioner 1 is mounted on a wagon 7 equipped with four casters 6 at the bottom.
A local air conditioning blow-off unit 9 is detachably attached to the base flange 5 of the local air conditioner 1 using a tightening band 8.

As shown in FIGS. 2 to 5, the local air conditioning blowout unit 9 has a casing 14 made up of a unit main body 11 equipped with a power supply inlet 10 and a front plate 13 equipped with a hanging hole 12. The front plate 13 is fixed to the unit body 11 with screws by tightening the mounting screws 16 to the bulging joint portion 15 of the unit body 11.

As shown in FIGS. 4 and 5, an air inlet 17 is provided at the back of the casing 14, which is divided into front and rear halves and configured in this manner.
Further, air outlets 18 are formed in the front portion, and the air inlet 17 and the air outlet 18 are communicated with each other via a wind barrel 19 inside the casing 14.

The unit main body 11 and the front plate 13 are each made of synthetic resin, and the front plate 13 constituting the front part of the casing 14 is provided with blades 20.2 that exhibit a Coanda effect.
A motor installation plate 21 and a vertical blade support plate 22 are integrally formed within the unit body 11 constituting the rear part of the casing 14.

Between the air inlet 17 and the air outlet 18, three vertical blades 23 are pivotally mounted near the air outlet 18 so as to be swingable.

That is, the motor installation plate 21 is provided with pivot pins 24...
. . . are installed, and pivot pins 25 . . . are also provided on the support plate 22 facing the pins 24 . Vertical blade 2 between
3 are pivotally mounted so that the blades 23 can swing in the left and right directions.

On the other hand, an electric motor 26 is attached to the motor installation plate 21, and a rotating shaft 27 of the motor 26 extends below the installation plate 21.

The motor 26 is electrically wired so that its rotation is stopped when the aforementioned stop switch 28 provided on the upper right side of the front plate 13 is turned on to cut off the power to the motor 26.

A connecting rod 29 made of synthetic resin is linked to the rotating shaft 27 of the motor 26 via a motion direction conversion mechanism that converts circular motion into reciprocating linear motion in the left-right direction. A motion direction changing mechanism 31 is constituted by an elliptical portion 29a integrally molded on the left end of the connecting rod 29 and a disk 30 that moves eccentrically.

The disk 30 is connected at its eccentric position to the rotating shaft 27 of the motor 26, and the disk 30 is connected to the rotary shaft 27 of the motor 26.
By inserting it into the recess of 9a, the rotating shaft 27
and a connecting rod 29 are interlocked with each other.

The connecting rod 29 configured to move linearly reciprocally in the left and right direction in this manner is connected to the rear upper end of each vertical blade 23 separated by the pivot pin 24 with the connecting pin 32.
The vertical blades 23 are connected to each other by . . . so that each vertical blade 23 automatically swings in the left and right direction when the motor 26 is energized.

By the way, the unit main body 11 described above has a front part shaped like a rectangular frame, and a back part formed as follows.

That is, the same back part is connected to a cylinder 11 a into which the tip of the cylindrical outlet 4 of the air conditioner main body casing 2 is removably inserted and fitted.
It was formed in

Moreover, a plurality of slits (11b) with open ends are formed on the cylinder (11a) at appropriate intervals.

On the other hand, installation pieces 33, 33 are integrally formed in the front part of the rectangular frame shape from the front part of the rectangular frame shape toward the rear, as shown in FIG. Hole 34, 3
4 is drilled.

The local air conditioning blowout unit 9 configured as described above is connected to the blowout port 4 of the air conditioner main body casing 2 via the base flange 5.
It is removably attached to.

That is, after wrapping a seal tape (not shown) around the outer periphery of the base flange 5 to prevent air leakage, the unit main body 11 is attached to the base flange 5 via the seal tape.
By fitting the cylinder 11a, further tightening the tightening band 8 from above the cylinder 11a, and reducing the plurality of slits 11b formed in the cylinder 11a. A local air conditioning blow-off unit 9 is attached to the blow-off port portion of the local air conditioner 1, and the blow-off port 4 on the side of the air conditioner 1 and the air inlet 17 on the blow-off unit 9 side are made to communicate with each other.

Note that 35 in FIG. 1 is a power supply cord.

The illustrated embodiment is constructed as described above, and its operation will be explained below.

Now, when the local air conditioner 1 is driven and the motor 26 is energized via the energizing cord 35, the air blown into the casing 2 from the front lower part of the main body casing 2 of the local air conditioner 1 is After heat is exchanged within the casing 2, the air passes through the air outlet 4 and the base flange 5 formed at the upper front surface of the casing 2, and from the air inlet 17 on the side of the local air conditioning blow-off unit 9 to the casing in the unit 9. After reaching the wind barrel 19 in 14, the air is blown out from the air outlet 18 toward the worker through between the vertical blades 23 and 23 and between the vertical blade 23 and the blade 20 that exhibits the Coanda effect.

At this time, the motor 26 is rotating, and the motor 26 is rotating.
6 is converted into a reciprocating linear motion in the left-right direction by the movement direction conversion mechanism 31 and transmitted to the connecting rod 29,
By the reciprocating linear movement of the connecting rod 29, each of the vertical blades 2
3... is a swing speed of around 5 times per minute, for example, and a swing angle of 45 degrees to the left and 45 degrees to the right, for a total of 90 degrees, and is repeatedly swung left and right. Therefore, the blowing angle of the cold air or warm air from the air outlet 18 is larger than that of the conventional structure.

Moreover, since the blades 20.20 that exhibit the Coanda effect are integrally formed on the front plate 13, the blades 20.20
Since the airflow from the wind barrel 19 is blown out along the blades 20, 20 due to the Coanda effect, it is possible to ensure the expansion of the blowout angle.

Therefore, the air conditioning area can be expanded,
It is possible to provide good working conditions even to mobile workers.

In addition, the stop switch 28 is turned on and the motor 2
When the power supply to 6 is cut off, the vertical blades 23 can be directed in a desired direction by manual operation to receive cold air or hot air.

FIG. 6 shows another embodiment of the mounting structure of the local air conditioning blow-off unit 9, in which the base end of the standard duct 36 is connected to the base flange 5, and the local air conditioning The blow-off unit 9 for local air conditioning is tightened and fixed by the tightening band 8, and the wire 37 hanging down from the ceiling surface A is engaged with the hanging hole 12 in the front plate 13 of the blow-off unit 9. is suspended and fixed on the ceiling surface A, and the blow-off unit l-9 is connected to the local air conditioner 1.
It is placed at a position separated from the

Even with this configuration, substantially the same effects as in the previous embodiment can be achieved, so in FIG. 6, the same parts as in FIG. 1 are given the same numbers, and detailed explanation thereof will be omitted.

FIG. 7 shows still another embodiment of the mounting structure of the local air conditioning blow-off unit l-9, in which a flexible extension duct 38 is connected to the tip of the standard duct 36 using a tightening band 8'. , this flexible extension duct 3
The local air conditioning blow-off unit 9 is tightened and fixed to the tip of the stand 3 with a tightening band 8, and the stand 3 is further installed on the floor surface B.
The local air conditioning blow-off unit 9 is fixed to the air conditioner 9 with screws.

That is, the hole 34 drilled in the installation piece 33 of the unit 9
The installation piece 33 is fixed to the stand 39 by inserting screws 40 into
It is placed at a position relatively far away from the

Even with this configuration, substantially the same functions and effects as those of the previous embodiments can be achieved. In FIG. 7, the same parts as in FIG. 6 are given the same numbers, and detailed explanation thereof will be omitted.

As described in detail above, the present invention allows the air inlet 17 at the back of the casing 14 and the outlet 18 at the front of the casing 14 to communicate with each other via the wind barrel 19 inside the casing 14, and the air inlet 17 and the outlet A plurality of vertical blades 23 are pivotably mounted near the air outlet 18 between the air outlet 18 and the rotating shaft 27 of a motor 26 installed in the casing 14.
Motion direction conversion mechanism 31 that converts circular motion into reciprocating linear motion
A connecting rod 29 is interlocked via the connecting rod 29, and the connecting rod 29 is connected to one end of each of the vertical blades 23 to swing the vertical blades 23, and the back part of the casing 14 where the air inlet 17 is located is , the tips of the cylindrical outlet 4 or the cylindrical duct ends 36 and 38 of the air conditioner main body casing 2 are formed into a cylinder 11 a into which the ends are removably fitted, and the cylinder 11
Slabs with open ends at appropriate intervals in a)llb
Since a plurality of cylinders 11a are formed and a tightening band 8 is arranged on the outer surface of the cylinder 11a, the blowing angle of cold air or hot air from the blowing outlet 18 in the front part of the casing 14 can be increased. , it is possible to expand the air conditioning area and provide good working conditions to mobile workers.

Moreover, since the blow-off section is made into a unit separate from the main body casing 2 and the unit 9 can be attached to and detached from the blow-off port 4 of the main body casing 2, the installation position of the unit 9 can be selected from various positions. This has the effect of simplifying handling.

Furthermore, since the slit 11 b is formed in the cylinder 11 a, the blow-off unit 9 can be easily attached to and detached from the blow-off outlet 4 on the local air conditioner 1 side and the ducts 1-36 and 38.
When performing local air conditioning for one or more workers, the blow-off unit 9 can be easily attached and detached.

[Brief explanation of the drawing]

Figure 1 is a side view of a local air conditioner equipped with a local air conditioning outlet unit according to the present invention, Figure 2 is a perspective view of the local air conditioning outlet unit, and Figure 3 is a front view of the local air conditioning outlet unit I. Figure 4 is a sectional view taken along line IVIV in Figure 3, and Figure 5 is a sectional view taken along the line IVIV in Figure 3.
The figure is a sectional view taken along the line v-V in FIG. 3, and FIGS. 6 and 7 are side views showing other embodiments of the mounting structure for the local air conditioning blow-off unit.゛1...Local air conditioner,
2... Air conditioner body casing, 4...
Air conditioner main body casing air outlet, 5... base flange, 9... local air conditioning outlet unit, 14.
...Casing, 17...Air inlet,
18...Air outlet, 19...Wind barrel, 23
... Vertical blade, 26 ... Motor, 27
... Rotating shaft of motor, 29 ... Connecting rod, 31 ... Motion direction conversion mechanism.

Claims (1)

[Scope of utility model registration request] Air inlet 17 on the back of casing 14 and casing 1
4 communicates with the air outlet 18 in the front part through the wind cylinder 19 in the casing 14, so that a plurality of vertical blades 23 can be oscillated near the air outlet 18 between the air inlet 17 and the air outlet 18. At the same time, a connecting rod 29 is connected to the rotating shaft 27 of a motor 26 installed in the casing 14 via a motion direction conversion mechanism 31 that converts circular motion into reciprocating linear motion, and this connecting rod 29 is The vertical blade 23 is connected to one end of the blade 23 to swing the vertical blade 23, and the back of the casing 14 where the air inlet 17 exists is connected to the cylindrical outlet 4 of the air conditioner main body casing 2 or the cylindrical duct 1. −
36. A cylinder 11 into which the tip of 38 is removably inserted and fitted.
A, a plurality of slits (11b) with open ends at appropriate intervals are formed in the cylinder 11a, and a tightening band 8 is arranged on the outer surface of the cylinder 11a. A blowout unit for local air conditioning, which is characterized by: