JPS6213579B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a flow direction control device that is installed at the outlet of an air conditioner or the like and deflects the flow from the air source in an arbitrary direction. .

Configuration of Conventional Example and its Problems The prior art of the present invention will be explained below with reference to the drawings of FIGS. 1 to 7. In the figure, 4 is a blowing source that sends out a flow (Syrotskov fan, crossflow fan, or any other type of fan), 5 is a blowing passage, and 6
7 is a flat wall forming one side of the longitudinal wall of the blow-off passage 5, and a curved wall 7 forming the other side, each of which has a gradually enlarged shape. A bias projection 8 is provided on the flat wall 6 to deflect a part of the flow toward the curved wall. A straight wall 9 is formed downstream of the bias protrusion 8 . Reference numeral 10 denotes a flow control member, which is provided substantially parallel to the longitudinal direction of the blow-off passage 5 and rotates around a rotating shaft 11. In addition, the flow control member 1
0 has a substantially arc-shaped head 10a whose center 0 is eccentric with respect to the rotation axis 11, and has one bias acting part 10b on an extension of the head and the other substantially arc-shaped flow dividing part. The cross section of 10c and the other surface 10d forms a columnar body consisting of three surfaces.

According to the configuration of this embodiment, the flow control member 10
The following operations are shown by rotating .
First, the case where the flow control member 10 is rotated to the position shown in FIG. 2 will be described. In this case, the air source 4
The flow sent out from the flow control member 10 is divided into an upper flow Fa and a lower flow Fb by the head 10a. As a result of the upper flow Fa being partially bent downward in the figure by the action of the bias protrusion 8, the flow control member 1
0 will flow along the flow dividing portion 10c. Since the flow dividing portion 10c faces slightly upward as shown in the figure, Fa flows along the straight wall 9 provided on the downstream side of the bias protrusion 8.
It blows out almost horizontally. On the other hand, the flow Fb on the lower side
Since the bias acting portion 10b is oriented almost horizontally, the air is blown out in the horizontal direction. Therefore, the entire flow of air is blown out in a substantially horizontal direction as shown in the figure. Next, the case where the flow control member 10 is rotated to the position shown in FIG. 3 will be described. In this case, the upper flow Fa flows along the flow dividing portion 10c under the influence of the bias protrusion 8, as in the case described above. At this time, as shown in the figure, since the flow dividing portion 10c faces slightly downward, Fa also blows out facing slightly downward. On the other hand, the lower flow Fb adheres to the curved wall 7 due to the bias action portion 10b facing downward, and flows downward. As a result, the upper flow Fa and the lower flow
The flow that merges with Fb flows downward as shown in the figure. Next, the case where the flow control member 10 is rotated to the position shown in FIG. 4 will be described. In this case, a part of the upper flow Fa is deflected to the lower side of the diagram due to the influence of the bias protrusion 8, but since the flow dividing action part 10b of the flow control member faces upward, the flow
Fa is blown out along the straight wall 9 in a substantially horizontal direction. On the other hand, the flow Fb on the lower side adheres to the curved wall 7 by the action on the opposite side of the flow dividing action part 10c and is blown out downward. In this case, since the two flows Fa and Fb flow along the straight wall 9 and the curved wall 7, respectively, they do not merge with each other but flow out in separate directions, horizontally and downward, resulting in a branching operation.

As described above, by rotating the flow control member 10, the flow can be deflected from the horizontal direction downward over a wide angle, and the flow can be branched horizontally and downward to be blown out. In addition, the control of the flow of time is
Since the flow is not forcibly bent but is deflected using the adhesion effect of the flow to the flow control member 10, the curved wall 7, etc., the air volume hardly decreases. Experimental data for an example of this flow direction control device are shown in FIGS. 6 and 7. FIG. 6 shows the relationship between the rotation angle θ of the flow control member 10 and the flow deflection angle α (shown in FIG. 3), and FIG. 7 shows the relationship between the rotation angle θ of the flow control member 10 and the air volume reduction rate. This shows the relationship. In Figure 6, as the angle θ increases, the deflection angle α also increases proportionally; when θ is about 60°, α becomes about 80°.
Reach ゜. Furthermore, when θ is set to 100° or more, the flow is divided into a lower component and a horizontal component, resulting in a divided flow state. FIG. 7 shows the rate of decrease in air volume at this time, and it can be seen that even if the angle θ is rotated, it changes by only about 10%.

However, in order to perform ideal air conditioning, it is desirable that the rate of decrease in air volume be zero, and in the case of horizontal blowing as shown in FIG. 2, it is desirable that the bias protrusion 8 have no effect.

Purpose of the Invention The present invention aims to eliminate these conventional drawbacks, and to improve comfort during air conditioning by significantly deflecting the airflow without changing the volume of air blown. be.

Structure of the Invention In order to achieve this object, the present invention forms one wall of a blowing passage having a rectangular cross section with a flat wall, and the opposite wall with a curved wall with a gradually enlarged shape.
A flow control vane having a cross section of three faces is provided which is substantially parallel to the plane wall of the blowing passage and rotates about a rotational axis at substantially right angles to the flow, and a bias blower is provided at a portion of the plane wall facing the flow control vane. An outlet is provided, and the bias outlet is configured to communicate with a passage on the upstream side of the flow control vane.

With this configuration, the amount of flow blown out from the bias outlet changes according to the rotation of the flow control member, ensuring deflection operation, and compensating for the decreased air volume, with almost no change in the air flow direction. The result is a change in

DESCRIPTION OF THE EMBODIMENTS One embodiment of the present invention provides a bias outlet 80 in place of the bias protrusion 8 in the prior art configuration, and the bias outlet 80 is connected to the flow control vane 10.
The upstream side of the air outlet is connected to the air outlet passage. This configuration produces the following effects depending on the respective blowing conditions. First, in the case of horizontal blowing, the 8th
As shown in the figure, the airflow resistance due to the flow control blades 10 is the smallest, and the pressure within the blowout passage 5 does not increase.
Therefore, no jet stream is blown out from the bias outlet 80, the upper flow Fa adheres to the straight wall 9 without resistance, and the combined flow is blown out smoothly in the horizontal direction. In the case of downward blowing, as shown in Figure 9,
A certain pressure increase occurs in the blow-off passage 5 due to the increased resistance area of the flow control vanes to the flow.
As a result, the flow passes through the communication path 90 and is blown out from the bias outlet 80 to perform a bias effect.
As a result, the upper flow Fa adheres to the flow dividing portion 10c of the flow control blade 10, and the combined flow becomes a downward blow. The larger the angle at which the flow control blades 10 are tilted downward, the more resistance to the flow increases, and therefore the amount of flow exiting from the bias outlet increases. Therefore, as the flow control vane 10 is tilted downward to increase the deflection angle of the downward blow, the amount of bias flow increases, promoting the downward blow. At this time, as the flow resistance by the flow control vanes increases, the amount of flow blown out from the bias outlet 80 increases, so the rotation of the flow control vanes causes almost no change in the overall air volume. Next, in the case of split flow, as shown in Figure 10, the flow resistance increases due to the rotation of the flow control blades,
The flow from the bias outlet 80 increases, but because the upper flow Fa is directed upward as shown in the figure.
Fa adheres to the straight wall 9 and blows out horizontally. That is, as shown in FIGS. 8 to 10, the flow rate of the air blown from the bias air outlet 80 changes according to the rotation of the flow control vane 10, so that the bias air flow is reduced during horizontal blowing when no bias air flow is required. In the case of downward blowing without generation, a bias flow is generated according to the inclination angle of the flow control vane, thereby making it possible to perform the most efficient control. Moreover, the air volume reduced by the resistance of the flow control vanes is blown out from the bias outlet 80, so that almost no change in the air volume can be caused.
Moreover, even when a single flat plate is used as the flow control vane as shown in FIG. 11, substantially the same effect as described above can be obtained.

Effects of the Invention As described above, the flow direction control device of the present invention has the following features:
One wall of the outlet passage with a rectangular cross section is a flat wall,
A wall facing the blowout passage is formed of a curved wall having a gradually enlarged shape, and a flow control vane is provided which rotates about a rotation axis substantially parallel to the plane wall of the blowout passage and substantially perpendicular to the flow, and Since the bias outlet is provided in a portion facing the flow control vane and the bias outlet is communicated with a passage on the upstream side of the flow control vane, the following effects are achieved.

If the position of the flow control blade is such that no bias effect is required and the decrease in air volume is small, such as during horizontal blowing, no flow will occur from the bias outlet. If the position of the flow control vane is such that a bias effect is required and the decrease in air volume is large, such as during downward blowing, a flow is generated from the bias outlet, producing a bias effect and increasing the air volume. In other words, it is possible to generate an optimal bias jet flow according to the rotation of the flow control vane, thereby realizing a more comfortable blowing condition.

[Brief explanation of the drawing]

1 to 5 are cross-sectional views showing the prior art of the embodiment of the present invention, FIG. 6 is a characteristic diagram showing the deflection characteristics of the prior art, FIG. 7 is a characteristic diagram showing the air volume characteristics, and FIG. 8 is a characteristic diagram showing the deflection characteristics of the prior art.
10 to 10 are cross-sectional views of an embodiment of the flow direction control device of the present invention, and FIG. 11 is a cross-sectional view of another embodiment. 5... Blowout passage, 6... Plane wall, 7... Curved wall, 10... Flow control vane, 11... Rotating shaft, 80
...Bias air outlet, 90...Communication path.

Claims (1)

[Scope of Claims] 1. One wall of a blowout passage having a rectangular cross-sectional shape is a flat wall, and the wall opposite to the flat wall is a curved wall with a gradually expanding shape, and the blowout passage is provided with a wall substantially parallel to the flat wall. A columnar flow control vane having a cross section of three faces is provided substantially perpendicular to the flow at a rotation axis, and a bias outlet is provided in a portion of the plane wall facing the flow control vane. A flow direction control device in which a bias outlet is communicated with a passage on an upstream side of the flow control vane. 2. The flow control vane has a head that is approximately arc-shaped and has the center 0 of the arc at an eccentric position from the rotation axis, one side of the extension of the head is a bias acting part, and the other is approximately arc-shaped. 2. The flow direction control device according to claim 1, wherein the flow direction control device is a columnar body comprising a flow dividing portion.