JPH03251642A - Wind shiftable blowoff port damper - Google Patents

Abstract

PURPOSE:To simplify constitution and control and enable both wind volume and wind direction adjustments by a method wherein adjustments of open/close and wind movement of an air blowoff port are carried out by rotation of a rotary damper half of which is shaped in an arc or a vane. CONSTITUTION:A rotary damper 12 shaped in an arc or an elipse in section and supported by an eccentric shaft adjusts wind volume and shifts wind direction. The wind volume adjustment is mainly achieved by rotation angle of the damper 12, and in is instance, the eccentricity of the eccentric shaft is effective for improving the flow of airstream. The wind shifting is achieved by the rotation angle of the damper 12 and the sectional shape of the damper 12, and in particular, when the sectional shape is an arc or an elipse, wall effect is generated, so that the wind direction is set in a direction led by a curved wall of the damper 12. Further, if a motor 14 is rotated at a constant speed to rotate the damper 12 slowly, the wind volume and wind direction get changed gradually, so that almost natural wind which changes gradually and successively in the wind volume and wind direction can be obtained.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a variable wind direction type outlet damper device, and
It can be used in air conditioning systems for buildings that have air outlets installed on floors, walls, etc.

[Background technology]

BACKGROUND ART Conventionally, air conditioning systems for buildings have used systems in which air that has undergone heat exchange with an indoor unit is sent to each room through ventilation ducts installed in the ceiling, under the floor, or the like. In order to supply air from the duct, air outlets opened toward each chamber are used.

In such an air outlet, a damper or the like is used to control the intermittent ventilation or an air volume, and a louver or the like is used to adjust the direction of the air flow.

[Problem to be solved by the invention]

By the way, in the conventional air outlet, in order to adjust the air volume and the air direction, it is necessary to provide separate mechanisms such as a damper and a louver, respectively.

Therefore, in order to automatically adjust the air volume and direction, it is necessary to provide a control mechanism for each damper, etc. and louver, etc., which makes the area around the air outlet complicated and the control complicated. was there.

An object of the present invention is to provide a variable wind direction type outlet damper device which is simple in structure and control, and can adjust both air volume and direction.

[Means to solve the problem]

The variable wind direction outlet damper device of the present invention has a rotary damper disposed at an air outlet opening toward the interior of the room, and whose cross-sectional shape is at least half arc-shaped or wing-shaped. The damper is rotatably supported by an eccentric shaft eccentric from the central axis, and the rotation of the rotary damper opens and closes the air outlet and adjusts the wind direction.

Here, the cross-sectional shape of the rotary damper can be a complete ellipse, a wing-like shape, or a combination of circular arcs (rather than a perfect circle), or one half is a semicircle and the other half is an ellipse (short axial surface), wing-like shape, or circular arc shape.

Such a damper device connects an indoor unit or the like to a ventilation duct arranged in the ceiling, under the floor, etc. of a building, and is installed at an air outlet opening into the ceiling, floor, or wall.

[Effect]

In the present invention, the air outlet is opened and closed depending on the rotation angle of the rotary damper, and the air volume and direction change. At this time, the airflow flowing along the rotary damper is deflected by the Coanda effect (wall effect) due to the arcuate or wing-shaped cross-sectional shape of the damper side, so the rotary damper is rotated electrically or manually. By aligning the position, it is possible to match the air volume and direction to a predetermined amount. Therefore, since the air volume and direction are adjusted only by the rotary damper, there is no need for a louver or the like for adjusting the air direction.

In addition, by rotating the rotary damper slowly using an electric motor or the like, it is possible to send fluctuating wind into the room in which the wind direction and air volume change sequentially, and it is possible to obtain a comfortable wind close to nature.

〔Example〕

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

FIG. 1 shows the external appearance of a variable wind direction type outlet damper device according to the present invention, and FIG. 2 shows the damper device of FIG. 1 viewed from inside a ventilation duct.

In the figure, a ventilation duct 10 is provided with an air outlet section 11 having an opening 11A on the lower side, and the opening 11A of the air outlet section 11 is arranged on the ceiling, floor, and wall. A rotary damper 12 having an elliptical cross-sectional shape is attached to the air outlet portion 11 by its eccentric shaft 13 so as to be able to rotate once in the air outlet portion 11. It is connected to the rotating shaft of the motor 14 via a gear or the like.

FIG. 3 shows the damper device cut away in the air supply direction in the duct, and is in the same position as the rotary damper 12 in FIGS. 1 and 2, as shown. In addition, the eccentric shaft 13 is provided outside the short axis of the ellipse.

When the rotary damper 12 is rotated around such an eccentric shaft 13, the rotary damper 12 draws a circle 100 from the eccentric shaft 13 to the outer circumference of the maximum length.

In this embodiment, the cross-sectional shape of the rotary damper 12 is arcuate.
By forming the damper into an elliptical shape and supporting it with an eccentric shaft, the air volume can be adjusted and the wind direction can be changed.The adjustment of the air volume is mainly achieved by the rotation angle of the rotary damper 12, but in this case, By using an eccentric shaft, it is possible to improve air flow. In addition, the change in the wind direction is achieved by the rotation angle of the rotary damper 12 and the cross-sectional shape such as an ellipse. In particular, the wall effect (
Coanda effect) occurs, and the wind direction is set in the direction guided by the curved wall of the rotary damper 12.

4 to 11 show states in which the rotary damper 12 is rotated by 45 degrees from the state shown in FIG. 3, and the operation of the first embodiment will be explained based on these views.

In the case of Figure 4, the air volume is high and the wind direction is towards the lower right side of the figure. In the case of Figure 5, the air volume is small and the wind direction is towards the lower center of the figure. In the case of Figure 6, the air volume is As in the case of Figure 4, the wind direction is mostly towards the lower left side of the figure, in the case of Figure 7, the air volume is large and it is directed slightly towards the lower left side of the figure, and in the case of Figure 8, the air volume is small and it is towards the lower left side of the figure. In the case where the damper is turned to the side, as shown in FIG. 9, the air volume is zero and the damper is closed. If you want to adjust the air volume to a smaller value, the rotation angle should be set close to the state shown in FIG. 9.

In addition, in the case of Figure 1θ, the air volume is small and points towards the bottom of the figure, and in Figure 11, the air volume is directed slightly towards the lower right side of the figure, returning to the same position as in Figure 3. .

In the above case, the rotary damper 12 should be controlled in consideration of the air feeding direction, since it differs somewhat depending on whether the air in the duct 10 is fed from the left side or the right side in the figure. become. In this case, the rotary damper 12 may be set so that the desired air volume and direction can be set by sequentially feeding the rotary damper 12 by a predetermined angle, or it can be automatically set to an arbitrary rotation angle using a rotation angle detector or the like. You can do it like this.

Further, according to the present invention, by slowly rotating the rotary damper 12, it is possible to send a fluctuating natural wind. That is, the motor 14 is rotated at a constant speed,
When the rotary damper 12 is slowly rotated through a gear or the like, the air volume and wind direction change in the order shown in FIGS. It is possible to create a certain type of wind, the so-called natural wind.

Generally, the air sent out from the air outlet 11 is sent in a predetermined amount from a predetermined direction, which often causes discomfort to those who stay indoors for a relatively long time. With the wind, you can stay comfortable even for long periods of time.

In the above embodiment, the rotary damper 12 has an elliptical cross-sectional shape, but it may also have a wing-like shape or a circular arc instead of a complete circle, and the same effect as in the above embodiment can be obtained. is obtained.

In addition, as in other embodiments shown in FIGS. 12 and 13,
Half of the cross section of the rotary damper may be arcuate or wing-shaped.

In FIG. 12, half of the cross section of the rotary damper 15 is formed into a semicircular arc shape centered on the eccentric axis '13, and the other half is formed into a circular arc shape with a large radius of curvature. The outer circumferential surface of the air outlet 11 always comes into contact with the inner wall of the air blowing part 11. Therefore, as shown in Fig. 13, the air volume and direction must be adjusted using other arcuate parts with large curvature radii, and in the state shown in Fig. 13, the wind can be sent in a slightly striped manner to the lower right side of the figure. . Further, by slowly rotating the rotary damper 15, a fluctuating natural wind can be obtained, and the same effect as in the embodiment described above can be obtained.

In addition, the shapes and dimensions of the damper 15, air outlet 11, etc. may be set as appropriate depending on the implementation, or the type of rotation mechanism such as the motor 14 and its control system may be arbitrarily selected. However, the present invention is not limited to the above embodiments.

〔Effect of the invention〕

As explained above, according to the variable wind direction outlet damper device of the present invention, the damper can also serve as the function of a conventional louver, etc., and the structure and control can be simplified, and the air volume and direction can be adjusted. You can do both.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention, Fig. 2 is a view of the same embodiment as seen from inside the ventilation duct, and Figs. 3 to 11 show the damper rotated by 45 degrees in each case. FIGS. 12 and 13 are sectional views showing other embodiments of the present invention. 10... Ventilation duct, 11... Air outlet section, 12
．． 15... Rotating damper, 13... Eccentric shaft, 14...
··motor.

Claims (1)

[Claims] (1) A rotary damper installed at an air outlet opening toward the interior of the room and having at least half of its cross-sectional shape shaped like an arc or a wing shape, and the rotary damper is eccentric from the central axis. It is rotatably supported by a shaft, and the air outlet is adjusted to open and close by rotating a rotary damper.
A variable wind direction outlet damper device that changes the wind direction.