JPS6051611B2 - flow direction control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for controlling the flow direction of air conditioning flow in an air conditioner or the like, and its purpose is to perform wide-angle deflection with small loss resistance.

Conventionally, as a device for controlling the flow direction over a wide angle, there has been known a device as shown in FIG. 4 of Japanese Patent Laid-Open No. 54-60661. However, in this case, the flow direction is controlled only by rotating the blades, and in order to achieve wide-angle deflection, the angle of inclination of the blades must be increased, resulting in a large increase in loss resistance. Ta. Therefore, an object of the present invention is to enable wide-angle deflection without increasing the loss resistance as described above, and to achieve this object, the present invention takes the following technical means.

That is, it has an inlet part where the flow flows in, an outlet part where the flow flows out, a blade placed in the flow between the inlet part and the outlet part, and an operating part for the blade. A guide wall configured such that the channel width gradually expands toward the downstream is provided at the outlet portion, and the operating portion is configured to rotate around the axis of the blade and to move the position of the blade toward the vicinity of the guide wall. It is configured as possible, and is set so that the adhesion of the flow to the guide wall can be controlled.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 6. In FIGS. 1 and 2, 1 is a flow direction control device.

The upper side of the flow direction control device 1 has a top plate 2 and a bend 3 at its downstream end as a means for directing the flow inward. The lower side of the flow direction control device 1 has a lower plate 4 and a guide 5 arranged above the lower plate 4. The guide section 5 is formed at the nozzle section 6 and its downstream side, which has a curved surface shape that gradually changes the flow direction to the horizontal direction toward the downstream, and has a shape that gradually expands the channel width toward the downstream. The downstream end 8 of the nozzle portion 6 and the upstream end 9 of the guide wall 7 are connected to each other with a step. The flow direction control device 1 is laterally divided by side plates 10 and 11, and these upper plate 2, lower plate 4, guide portion 5, and side plates 10 and 11 form a flow path. The part of the flow path upstream of the downstream end 8 of the nozzle part 6 is called an inlet part 12, and the part downstream of the downstream end 8 is called an outlet part 13.

A vane 14 is arranged within the flow path.

In FIGS. 3 and 4, reference numeral 33 indicates an operating portion of the blade 14.

Attached to the side plate 11 side of the blade 14 are a shaft 15 serving as the center of rotation, a guide shaft 16 for moving the blade 14, and an operating lever 17 integrated with the guide shaft 16. Further, a shaft 15'' corresponding to the shaft 15, a guide shaft 16'' corresponding to the guide shaft 16, and an operating lever 17'' integrated with the guide shaft 16'' are attached to the side plate 10 side of the blade 14. The side plate 11 has grooves 18 corresponding to the shaft 15 and guide shaft 16 for movement therein.
, 19 are provided, and each shaft 1 is provided inside the groove.
Pressure packings 20 and 21 are inserted so that the guide shaft 16 and the guide shaft 16 can be locked at any position.

In order for the shaft 15'' and the guide shaft 1'' to move, the side plate 10 is also provided with corresponding grooves 18'' and 19'', respectively. Pressure packings 2'', 2'' are inserted so that the shaft 16'' can be locked at any position.
2 into a rotation support section 23 above and a slide section 24 below. Groove 19 has an opening angle (α+β)
It consists of a circular arc section 25 and a slide section 26 below it. The grooves 18'' and 19'' are also configured in a similar shape. These grooves 18 and 19, the shaft 15, the guide shaft 16, and the blade 14 are constructed so that the following movement of the blade 14 is possible.

That is, when the operating lever 17 is rotated downward from the position shown in FIG. 4, up to an angle β below the horizontal,
The shaft 15 does not move, but the guide shaft 16 rotates around the shaft 15, and the operating lever 17 is moved downward. When moving, as the guide shaft 16 moves downward on the slide section 26, the shaft 15 also passes over the constriction section 22 and moves downward on the slide section 24, and the blade 14 moves downward at an angle β from the horizontal. Move downward in parallel while maintaining . When moving the vane 14 upwardly, the exact opposite situation occurs. The constricted portion 22 is provided so that the shaft 15 does not easily move when the blade 14 is rotated. Next, the operation will be explained with reference to FIGS. 5A, b, and c.

FIG. 5a shows the case where the blade 14 is tilted upward from the horizontal at an angle α. At this time, the shaft 15 of the blade 14, the guide shaft 1
6 is a flow A flowing in from the inlet portion 2 located at the position shown in FIG. Among them, flow 8 between the blade 14 and the nozzle part 5 and flow C between the blade 14 and the upper plate 2. interfere with each other, resulting in approximately S゛horizontal flow D. becomes. FIG. 5b shows the case where the blade 14 is tilted downward from the horizontal at an angle β.

At this time, the shaft 15 of the blade 14 is in the position shown in FIG.
The guide shaft 16 is at a position rotated by an angle of (α + β). Of the flow A1 flowing in from the inlet portion 2, the blade 14
The lower flow B1 attaches to the guide wall 6, but because the angle of inclination of the blade 14 is small, it only attaches to a part of the guide wall 6. On the other hand, the upper flow C1 of the vane 14 is directed downward by the bend 3. The flow C1 is attracted by the flow B1 and merges to form a flow D1, which heads in a direction at an angle of θ with respect to the horizontal direction. FIG. 5c shows the case where the blade 14 is moved downward while keeping the slope the same as b.

That is, in FIG. 4, the shaft 15 is located at the lower end of the slide portion 24, and the guide shaft 16 is located at the lower end of the slide portion 26.
FIG. 6 shows zeta when the inclination angle β of the blade 14 is kept constant and the position of the shaft 15 is changed in this way. The axis position b in FIG. 6 represents the distance between the axis 15 and the downstream end 8 of the nozzle section 6 in FIG. From this graph,
When β=30, it is confirmed that the deflection angle increases as the position of the shaft 15 is moved downward. Regarding FIG. 5c, since the blade 14 moves downward compared to FIG. 5b, the flow width below the blade 14 becomes smaller, and the flow B
2 extends downstream of the guide wall 6 and causes adhesion to a more downstream side than in the case of Fig. c. The increase in the deflection angle is also due to the fact that the upper flow C2 of the blade 14 moves closer to the guide wall 6 than in Figure c due to the downward movement of the blade 14. The upper flow C2 of the vane 14 is deflected downward by the action of the bending part 3, and is induced and merged in a flow manner to become a flow D2 having an angle 0'' that is deflected more downward than in Fig. 5. In other words, Fig. 5 When the deflection angle is further increased from state b, it is only necessary to move the blade 14 downward without increasing the inclination angle β.
This means that the loss resistance when performing a wide-angle operation can be reduced.

As is clear from the above description, the flow direction control device of the present invention makes the inclination angle of the blade small and moves the blade toward the guide wall so that the flow adheres to the guide wall further downstream. Therefore, a wide-angle deflection effect can be obtained with a small loss resistance.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the flow direction control device of the present invention, Fig. 2 is a sectional view taken along the line IV in Fig. 1, Fig. 3 is a plan view of the blade operating section of the device, and Fig. 4 is a side view of FIG. 1, FIGS. 5A, b, and c are sectional views taken along line IV in FIG. 1 showing the flow operation of the device, and FIG. It is an explanatory diagram. 1... Flow direction control device, 7... Guide wall, 12... Inlet section, 13... Outlet section,
14...Blade, 15...Shaft, 33...
...Operation section.

Claims (1)

[Claims] 1. It has an inlet part where the flow flows in, an outlet part where the flow flows out, a blade placed in the flow between the inlet part and the outlet part, and an operating part of the blade, A guide wall is provided in the section so that the channel width gradually increases toward the downstream side, and the operating section is configured to rotate about the axis of the blade and move the position of the blade to the vicinity of the guide wall. A flow direction control device constructed as possible and configured to control the adhesion of the flow to said guide wall.