JPH0215783B2 - - Google Patents

Description

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

Structure of a conventional example and its problems A conventional flow direction control device is shown in FIG. Reference numeral 1 designates an air blowing source, 2 a blowing passage, and 3 a flow deflection section composed of a plurality of louvers. The flow sent from the air blowing source 1 passes through the blowing passage 2 and is deflected in the vertical direction in the figure at the flow deflecting section 3.
Originally, in a heat pump, in order to equalize the temperature distribution in the room to be air-conditioned, it is desirable to control the blowing flow direction to downward blowing during heating and horizontal blowing during cooling. However, as shown by the broken line in Figure 1, when the air is deflected downward, the louver 3 almost blocks the air outlet, resulting in a significant drop in air volume and making it impossible to obtain a sufficient air conditioning effect. I couldn't do it.

Furthermore, if a large amount of hot air is blown downward during heating, the amount of hot air may be too large and may cause discomfort when it hits the human body. Experiments have confirmed that if the purpose is to maintain a constant temperature distribution, an almost constant temperature distribution can be obtained by blowing a certain amount of air downward and the rest in the horizontal direction. Therefore, in order to improve the temperature distribution and eliminate the discomfort caused by the blown hot air, a function for blowing out a certain amount of hot air in a downward direction and the rest in a horizontal direction, that is, a function of dividing the flow, has been necessary. It has been impossible to provide the above-mentioned flow dividing function in conventional flow direction control devices.

Purpose of the Invention The present invention aims to eliminate these conventional drawbacks by significantly deflecting the flow with almost no change in the volume of blown air, and by making the flow control blades have a special shape to achieve diversion operation. This improves comfort during air conditioning.

Structure of the Invention In order to achieve this object, the present invention provides a flat wall 6 for one wall of the blowout passage 5, a curved wall 7 having a gradually enlarged downstream end of the wall opposite to the flat wall 6, and A part of the flow flowing through the curved wall 7
The bias protrusion 8 is deflected toward the plane wall 6.
, the downstream side of the bias protrusion 8 is configured with a substantially planar wall 9, and the flow control member is a columnar body that rotates in the blowout passage 5 about a rotation axis 11 that is substantially parallel to the planar wall 6 and substantially perpendicular to the flow. 10 is provided, and the cross section of the flow control member 10 is approximately arc-shaped with the head 10a having the center of the arc eccentrically relative to the rotating shaft 11;
One side of the extension of the head 10a has a first substantially flat surface 10b, and the other side has a first substantially flat surface 1.
The head 10a has a substantially arc-shaped surface 10c that has an adhesive effect on the flow flowing between the bias protrusion 8 and the flow control member 10 when the downstream end of the head 10b is rotated in a direction approaching the curved wall 7. The flow control member 10 has a second substantially flat surface 10d that faces the first substantially flat surface 10b and forms an obtuse angle with the first substantially flat surface 10b.
is set substantially horizontally, the flow that hits the head 10a flows along the top and bottom of the flow control member 10, and the downstream end of the first substantially flat surface 10b rotates in a direction approaching the curved wall 7. In this case, among the upper and lower flows, the upper flow adheres to the substantially arc-shaped surface 10c, and the lower flow adheres to the first substantially flat surface 10b.
If the flow control member 10 is rotated so that the flow is divided, the flow that hits the first and second substantially flat surfaces 10b and 10d will flow onto the wall 9 and the curved wall 7, respectively. When the flow control member 10 is rotated so as to separate the flow on the second substantially flat surface 10d, the flow adheres to the curved wall 7. The control protrusion 100 has a substantially arc-shaped surface 10.
It is designed to extend c.

The term "bias" here means that a flow is generated in a direction substantially perpendicular to the flow in the blowout passage. This causes the flow in the blowout passage to be bent in the direction of the bias flow.

With this configuration, the flow adheres to or separates from the curved wall 6 in accordance with the rotation of the flow control member 10, resulting in a change in the blowing direction with almost no change in the air volume. Further, by rotating the flow control member 10, it is possible to perform a diversion operation in which the flow is divided into two directions, horizontally and downwardly.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below. First, for better understanding, the basic technology of the present invention will be explained with reference to FIGS.
This will be explained using the drawing of FIG. In the figure, 4
is a blowing source that sends out a flow (such as a sirotskov fan, a cross-flow fan, or any other type); 5 is a blowout passage; 6 is a flat wall forming one side of the longitudinal wall of the blowout passage 5; and 7 is a curved wall forming the other side. It is configured in a gradually expanding shape. 8 is a bias protrusion for deflecting a portion of the flow toward the curved wall 6, and is provided on the flat wall 6. A substantially planar 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. Further, the flow control member 10 has a head 10a having a substantially arcuate shape with the center O being eccentric with respect to the rotation axis 11.
One side on the extension line of a is the first substantially flat surface 10b
and the other is a substantially arc-shaped surface 10c having a substantially arc-shaped adhesion effect, and a second substantially flat surface 10d.
It forms a columnar body consisting of.

According to the configuration of this embodiment, the flow control member 11
The following operations are shown by rotating .
First, the case where the flow control member 10 is rotated to the position shown in FIG. 3 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
It flows along the substantially arc-shaped surface 10c of 0. Since the substantially arc-shaped surface 10c faces slightly upward as shown in the figure, Fa flows along the wall 9 provided on the downstream side of the bias protrusion 8, and is blown out in a substantially horizontal direction. On the other hand, the flow on the lower side
Since the first substantially flat surface 10b faces substantially horizontally, Fb is blown out in the horizontal direction. Therefore, the entire blowout flow 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. 4 will be explained. In this case, the upper flow Fa flows along the substantially arcuate surface 10c due to the influence of the bias protrusion 8, as in the previous case. At this time, as shown in the figure, since the substantially arc-shaped surface 10c faces slightly downward, Fa also blows out facing slightly downward. On the other hand, since the first substantially flat surface 10b faces downward, the lower flow Fb adheres to the curved wall 7 due to this action and flows downward. As a result, the combined flow of the upper flow Fa and the lower flow 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. 5 will be described. In this case, part of the upper flow Fa is deflected to the lower side of the drawing due to the influence of the bias protrusion 8, but since the first substantially flat surface 10b of the flow control member 10 faces upward, the flow
Fa blows out along the 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 of the second substantially flat surface 10d opposite to the substantially arc-shaped surface 10c and is blown out downward. In this case, since the two flows Fa and Fb flow along the 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, it is possible to deflect the flow downward from the horizontal over a wide angle, and also to separate the flow horizontally and downward and blow it out. In addition, the flow control at this time is not by forcibly bending the flow, but by deflecting it using the effect of the flow adhering to the flow control member 10, the curved wall 7, etc., so the air volume is almost reduced. There's nothing to do. Experimental data for an example of this flow direction control device are shown in FIGS. 6 and 7. FIG. 6 shows the deflection angle α of the flow relative to the rotation angle θ of the flow control member 10.
(θ and α are shown in Figure 4)
FIG. 7 shows the relationship between the rotation angle θ of the flow control member 10 and the air volume reduction rate. As the angle θ increases in Figure 6, the deflection angle α also increases proportionally, and when θ is approximately 60°, α becomes approximately
Reaches 80°. 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 varied over a wide range, it changes by only about 10%.

In addition to the basic technology described above, the present invention further provides a substantially arc-shaped surface 1 at the tip of the second substantially flat surface 10d of the flow control member 10, as shown in FIG.
A control protrusion 100 is provided so as to extend 0c. In FIG. 8, the control protrusion 100 has a cylindrical shape and is provided substantially parallel to the rotation axis 11. In FIG. This configuration produces the following effects in the case of downward blowing and branching. First, in the case of downward blowing, as shown in Fig. 8, the length of the almost arc-shaped surface 10c of the upper flow Fa is extended, the attachment surface becomes longer, and the flow toward the almost arc-shaped surface 10c becomes longer. The adhesion effect is increased. As a result, the upper flow
The distance between Fa and the lower flow Fb becomes closer, and the two flows easily merge. Therefore, the velocity distribution of the combined flow F becomes uniform, the jet reach distance of the flow F increases, and when used in an air conditioner, the air conditioning effect increases. Also, as shown in Figure 9,
As for the deflection characteristics, the deflection angle becomes larger compared to the basic technology (without the control protrusion 100). Therefore, during downward blowing, the predetermined deflection angle α can be obtained by reducing the inclination angle θ of the flow control member 10, resulting in a decrease in the air volume reduction rate and improved operability. (The air volume is almost never lower than in the case of the basic technology due to the influence of the control protrusion 100.)
In the case of split flow, as shown in FIG. 10, a bias flow Fbi is generated under the influence of the control protrusion 100, which promotes the attachment of the lower flow Fb to the curved wall 7. As a result, the operation of the diversion is ensured, and the velocity distribution of the lower blowout flow is improved. Therefore, the same effect as in the case of downward blowing can be obtained.

In particular, as shown in FIGS. 8 and 10, by configuring the control protrusion 100 in a cylindrical shape, the control protrusion 100 can be configured so as to be replaceable depending on the upstream flow condition, so that it is always the best. Effective control becomes possible.

Effects of the Invention As described above, in the flow direction control device of the present invention, in the flow control member 10, the second substantially flat surface 1
A control protrusion 100 is provided on the surface 0d so as to extend the substantially arc-shaped surface 10c so as to promote adhesion of the flow to the curved wall 7 when the flow control member 10 is rotated so that the flow is divided. It is characterized by the following advantages:

(1) Even with a very small decrease in air volume, the flow can be greatly deflected, and when applied to air conditioning equipment, a very large air conditioning effect can be obtained.

(2) The flow can be deflected and divided by rotating the control member 10 with a single shaft, and the flow can be controlled with a simple configuration and good operability.

(3) At the time of diversion, adhesion of the flow to the curved wall 7 can be promoted, and the diversion operation can be ensured and the velocity distribution of the lower flow can be improved.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of a conventional flow direction control device, FIGS. 2 to 5 are diagrams showing deflection characteristics of an embodiment of the basic technology of the present invention, and FIGS.
8 and 10 are cross-sectional views of an embodiment of the flow direction control device of the present invention, and FIG. 9 is a diagram showing the deflection characteristics. 5...Blowout passage, 6...Plane wall, 7...Curved wall, 8...Bias protrusion, 9...Substantially planar wall, 10...Flow control member, 10a...Head, 1
0b...First substantially flat surface, 10c...Substantially arc-shaped surface, 10d...Second substantially flat surface, 11
... Rotation axis, 100 ... Control protrusion.

Claims (1)

[Claims] 1. One wall of the blowout passage 5 is a flat wall 6, and the downstream end of the wall opposite to the flat wall 6 is a curved wall 7 with a gradually enlarged shape, so that the flow flowing through the blowout passage 5 is A bias protrusion 8 for deflecting a portion toward the curved wall 7 is provided on the plane wall 6, and the downstream side of the bias protrusion 8 is constituted by a substantially planar wall 9, and the blowing passage 5 is substantially parallel to the plane wall 6. A columnar flow control member 10 that rotates around a rotation axis 11 that is substantially perpendicular to the flow is provided, and the cross section of the flow control member 10 is such that the head 10a is approximately eccentric from the rotation axis 11 with the center of the circular arc. The head 10 is shaped like an arc.
On one side of the extension line of a is a first substantially flat surface 10.
b, the other having an adhesion effect on the flow flowing between the biasing projection 8 and the flow control member 10 when the downstream end of the first substantially flat surface 10b is rotated in a direction approaching the curved wall 7. Almost arc-shaped surface 10
c, and a second substantially flat surface 10d facing the head 10a and forming an obtuse angle with the first substantially flat surface 10b, the flow control member 10
is set substantially horizontally, the flow that hits the head 10a flows along the top and bottom of the flow control member 10, and the downstream end of the first substantially flat surface 10b approaches the curved wall 7. When the rotation occurs, the upper flow of the vertically divided flow adheres to the substantially arc-shaped surface 10c, the lower flow adheres to the first substantially flat surface 10b, and the flow control member 10 In the case where the flow is rotated so that the flow is divided, the flow that hits the first and second substantially flat surfaces 10b and 10d adheres to the wall 9 and the curved wall 7, respectively, and flows. When the flow control member 10 is rotated so that the flow is divided, the curved wall 7 is placed on the second substantially flat surface 10d.
control protrusion 100 to facilitate flow adhesion to
The flow direction control device is provided so as to extend a substantially arc-shaped surface 10c. 2. The flow direction control device according to claim 1, wherein the control protrusion 100 is constituted by a cylinder provided substantially parallel to the rotation axis 11.