JPH0215784B2 - - 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 the outlet of an air conditioner or the like and deflects the flow from the air source in an arbitrary direction. be.

Structure of a conventional example and its problems A conventional flow direction control device is shown in FIG. Reference numeral 1 denotes 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 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, making it difficult 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 member into a special shape. This allows for better operation and 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. When the flow control member 10 is set substantially horizontally and has a second substantially flat surface 10d that faces the first substantially flat surface 10b and forms an obtuse angle, the flow that hits the head 10a is controlled by the flow control member 10. flowing along the top and bottom of the member 10;
When the downstream end of the first substantially flat surface 10b rotates in a direction approaching the curved wall 7, the upper flow of the vertically divided flow adheres to the substantially arc-shaped surface 10c, and the lower flow When the flow adheres to the first substantially flat surface 10b and the flow control member 10 is further rotated so that the flow branches, the flows that hit the first and second substantially flat surfaces 10b and 10d respectively The first and second substantially flat surfaces 10 are attached to the wall 9 and the curved wall 7 in a flowing manner.
b, 10d are on the curved wall 7 side, a control protrusion 100 is provided on the downstream side of the first substantially flat surface 10b with respect to the flow to reduce the distance between the flow control member 10 and the curved wall 7. It is something that

With this configuration, the flow adheres to or separates from the curved wall 7 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. Also, the flow control member 10
It is also possible to perform a diversion operation in which the flow is divided into two directions, horizontal and downward, by rotating the .

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 sirotsky 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 7, and is provided on the flat wall 6. A substantially planar wall 9 is formed on the lower side 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 arc shape whose center O is eccentric with respect to the rotation axis 11, and one side on the extension line of the head is a first substantially flat surface 10b and the other side is an attached surface. It is a columnar body consisting of an effective substantially arc-shaped surface 10c and a second substantially flat surface 10d.

According to the configuration of this embodiment, the flow control member 10
The following actions are demonstrated 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 below
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 described. 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 diagram 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 lower flow Fa adheres to the curved wall 7 due to the action of the second substantially flat surface 10d opposite to the substantially arc-shaped surface 10c and is blown 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, the flow can be deflected over a wide angle downward from the horizontal direction, and can be blown out horizontally and downwardly. In addition, the flow control at this time is not by forcibly bending the flow, but by using the flow control member 10.
Since the air flow is deflected by using the adhesion effect of the flow to 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 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 about 60°, α becomes about
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, the rate of decrease is only about 10%.

The present invention is based on the basic technology described above, and further includes a control protrusion 100 having a bias effect on the first substantially flat surface 10b of the flow control member 10, as shown in FIG. . 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. As shown in FIG. 8, as a result of the bias flow Fbi being generated by the effect of the control protrusion 100, the flow Fb
The adhesion effect to the curved wall 7 is promoted. Therefore, even if the angle θ of the flow control member 10 is small, the flow of Fb will adhere to the curved wall 7, and the deflection characteristics will be as shown in the solid line compared to the basic technique (without control protrusion) shown in the dotted line as shown in FIG. As a result, the deflection angle becomes larger. 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 reduction in the air volume reduction rate and improved operability. (Control protrusion 1
Due to the influence of 00, the air volume is almost never lower than in the case of the basic technology. ) Also control protrusion 10
The effect of 0 hardly occurs in the case of horizontal blowing or split flow.

In particular, by configuring the control protrusion 100 in a cylindrical shape, as shown in FIG. It becomes possible to perform control.

Effects of the Invention As described above, in the present invention, when the first and second substantially flat surfaces 10b and 10d are on the curved wall 7 side,
It is characterized by providing a control protrusion 100 that reduces the distance between the flow control member 10 and the curved wall 7 on the downstream side of the first substantially flat surface 10b with respect to the flow, and has the following effects. .

(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 diverted by 10 rotations of the flow control member by one shaft, and the flow can be controlled with a simple configuration and good operability.

(3) During downward blowing, a predetermined deflection angle can be obtained even with a small rotation angle of the flow control member 10.

[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 sectional views showing an embodiment of the basic technology of the present invention, and Fig. 6 is a sectional view showing an embodiment of the basic technology of the present invention. FIG. 7 is a diagram showing the deflection characteristics of an embodiment of the present invention, FIG. 7 is a diagram showing the quantity characteristics, FIG. 8 is a sectional view of an embodiment of the flow direction control device of the present invention, and FIG. 9 is a diagram of 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. 1. With the second substantially flat surfaces 10b and 10d on the curved wall 7 side, the distance between the flow control member 10 and the curved wall 7 is set on the downstream side of the first substantially flat surface 10b with respect to the flow. A flow direction control device provided with a control protrusion 100 that reduces the size. 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.