JPS62218761A - Flow deflecting device - Google Patents

Abstract

PURPOSE:To compensate for the decreasing of a deflection angle in a case where the diameter of a nozzle is enlarged by forming a space encircled by a bias shielding plate into a frustum, with the diameter of the downstream end being substantially equal to the diameter of the nozzle. CONSTITUTION:A space encircled by the inside surface 8a of a bias shielding plate 8 is formed into a frustum, with the diameter R1 of the downstream end thereof becomes substantially the same as that of a nozzle 2. Further, the diameter R2 at the upstream end is formed into approximately 1/2 the diameter R1 at the downstream end. Further, the height H is formed into approximately 1/2 the diameter of the nozzle 2. The bias shielding plate 8 is movable toward the direction of the axis 1b of a flowpath and is rotatable around the axis 1b of the flowpath. The flow distribution is inclined in the direction of a guide wall in which exists the bias shielding plate 8, and adherence of the flow emitted from the nozzle to the guide wall 4 is sufficiently ensured and a large deflection angle is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a flow deflection 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. .

BACKGROUND OF THE INVENTION As a prior art to the present invention, there is Japanese Patent Application Laid-Open No. 60-30808. This configuration and operation are shown below. This is Figure 4~
As shown in Fig. 5, 1 is a flow path that guides the flow sent from a blower, etc., 1a is a cylinder that forms the flow path, 1b is the axis of the flow path, and 2 is a A circular nozzle with an aperture 3 from the periphery, 4 is a guide wall formed to surround the nozzle on the downstream side of the nozzle 2, and the shape gradually expands starting from the exit of the nozzle /I/2. . A bias shielding plate 5 for blocking the bias flow generated by the aperture 3 is provided upstream of the nozzle lv2.

(A perspective view is shown in FIG. 5.) This rotates around a rotating shaft 6, is located outside the nozzle near the outlet of the nozzle 2, and is in contact with the diaphragm 3.

This rotating shaft 6 is supported by a support member 7 that protrudes from the outer wall of the flow path 1.

In the above configuration, the operation will be explained using FIGS. 6 to 9. First, a case where the shielding plate 5 and the nozzle/v3 are in close contact with each other as shown in FIG. 6 will be described.

In this case, part of the flow F) entering the flow path is transferred to the constrictor 3
The bias bias flow becomes FB. Here, a bias flow FB occurs on the left side of the figure, but no bias flow occurs on the right side due to the effect of the bias shielding plate 5. (
Obstructed by a shielding plate. ) Therefore, the main flow FA is directed toward the right guide wall by the bias flow FB from the left side, and as a result, it adheres to the right guide wall and is deflected to the right side by a wide deflection angle θ. The deflection angle θ at this time can be arbitrarily set depending on the shape of the guide wall 4. FIG. 7 shows a case where the bias shielding plate 5 is rotated to the left, and the flow FA is deflected to the left at a wide angle.

Next, a case where the bias shielding plate 5 is moved to the position shown in FIG. 8 by rotating the rotating shaft 6 will be described. In this case, an interval FiD occurs between the bias shielding plate 5 and the diaphragm 3. Through this gap, a flow FB opposing the bias flow Fb
L is generated and weakens the force of FB. As a result, the adhesion force of the combined flow FA to the guide wall 4 is weakened, and the deflection angle of the blown flow becomes smaller than in the case of FIG. 7. The 1@direction angle increases in inverse proportion to the size of the gap.

Next, a case where the bias shielding plate 5 is moved to the position shown in FIG. 9 will be described. In this case, the flow FBL generated by the gap has almost the same strength as the bias flow FB,
The combined flow FA is blown out to the front without being deflected.

As described above, by operating the rotary shaft 6 to rotate or move the bias shielding plate 5 up and down, the adhesion position and strength of the flow to the guide wall change, and the blowing direction of the flow is changed from the wide-angle deflected position. It can be set in any three-dimensional direction up to the front.

Problems to be Solved by the Invention In the prior art described above, if there is a desire to increase the amount of air blown, it is necessary to enlarge the nozzle diameter. However, when the nozzle diameter is increased, the amount of jet flow increases relative to the size of the guide wall, which causes problems in that the adhesion to the guide wall deteriorates and the deflection angle decreases.

The present invention is intended to solve such conventional problems, and aims to compensate for the decrease in the deflection angle when the diameter of the nozzle is enlarged.

Means for Solving the Problems In order to solve the above problems, the flow southward device of the present invention has the following features:
The shape of the bias shielding plate in the prior art is such that the space surrounded by the bias shielding plate has a partially cut-out trapezoidal shape, and the diameter of the downstream end is approximately the same as the diameter of the nozzle. It is something.

According to the structure of the present invention, the flow passing through the space surrounded by the bias shielding plate flows along the trapezoidal surface of the cone, so that the flow is directed toward the guide wall and is prevented from adhering to the guide wall. The angle of deflection increases.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

In FIGS. 1 and 2, numerals 1 to 7 are the same as those in the prior art. Reference numeral 8 denotes a bias shielding plate, which has a trapezoidal shape with a part of the space surrounded by the inner surface 8a cut out, as shown in Fig. 2, and the diameter R1 of this downstream end is approximately the diameter of the nozzle/L/2. They are formed to be identical. Further, the diameter R1 at the upstream end is approximately 1/2 of the diameter R2. Further, the height H is set to approximately 1/2 of the diameter of the nozzle 2. The bias shielding plate 8 is configured to be movable in the direction of the flow path axis 1b and rotatable about the flow path axis 1b. In addition, the outer surface 8b of the bias shielding plate has almost the same shape (thickness is the same) as the inner surface 8a in the figure, but in actual use, even the arc shape shown in the prior art causes operational problems. There isn't.

In the above configuration, the basic operation is almost the same as in the prior art, but there is a difference in the flow near the bias shield plate. I will discuss it below. 517I in Figure 3: In the case of the shield plate shape in the prior art shown, the flow distribution V along the inner surface of the shield plate flows in the direction of the axis of the flow path, as shown by the two-dot chain line in the figure. .

For this reason, the effect of the bias flow FB cannot be fully utilized. On the other hand, when the inner surface 8a of the bias shielding plate is in the shape of a truncated cone as in the present invention, the flow distribution V is caused by the action of the bias flow FB on the guide wall where the bias shielding plate 8 is present. If the flow is inclined in the direction of , the flow FA coming out of the nozzle will be sufficiently attached to the guide wall 4. As a result, as shown in FIG. 3, a larger deflection angle is obtained compared to the prior art. The above explanation is based on the case where the nozzle width is the same, but when compared at the same deflection angle, it becomes possible to expand the nozzle width and increase the air volume according to the embodiment of the present invention. Further, the diameter R1 of the ball flow end is formed to be approximately 1/2 of the diameter R2 of the downstream end, and the height H is formed to be approximately 1/2 of the nozzle diameter, thereby obtaining the maximum deflection angle.

In addition to the effects of the invention, the flow deflection device of the present invention provides the following effects.

(1) The space surrounded by the bias shield plate is shaped like a trapezoidal cone with a part cut out, and the diameter of the downstream end is approximately the same as the diameter of the nozzle. The adhesion of the flow is promoted, and the nozzle diameter can be expanded to increase the volume of air blown while maintaining the same deflection angle.

(2) Since the bias shielding plate has a structure that can be seen from the downstream side, it is possible to indicate the flow direction by the movement of the shielding plate.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view of a flow deflection device according to an embodiment of the present invention, Fig. 2 is an enlarged view of the main part, and Fig. 3 is a sectional view of the main part.
Fig. 4 is a partially cutaway perspective view of a conventional flow deflection device;
The figure is an enlarged view of the same main part, and FIGS. 6 to 9 are sectional views of the same. 1...Flow path, 2...Nozzle IV, 3...
...Tightening, 4...Guidance wall, 8...
Bias shield. Name of agent: Patent attorney Toshio Nakao and one other person
+l+ II I II Foil 3 Figure 5-°1 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9

Claims (3)

[Claims] (1) A circular nozzle provided at the outlet end of the flow path and having a restriction from the entire circumference with respect to the axis of the flow path, and a guide having a gradually expanding shape formed so as to surround the nozzle outlet on the downstream side of the nozzle. a wall, and a bias shielding plate provided on the upstream side of the nozzle to block a part of the flow toward the axis of the flow path generated by the throttle, and the bias shielding plate has a space surrounded by the bias shielding plate. It has a notched trapezoidal shape and is formed so that the diameter of its downstream end is approximately the same as the diameter of the nozzle, and is movable in the direction of the axis of the flow path and rotatable about the axis of the flow path. Configured flow deflection device. (2) The flow deflection device according to claim 1, wherein the diameter of the upstream end of the bias shield plate is approximately half the diameter of the downstream end. (3) Adjust the height of the bias shield plate to approximately 1/2 of the nozzle diameter.
2. A flow deflection device according to claim 1, wherein the flow deflection device is formed as follows.