JPH0465302B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a flow direction control device that deflects a flow blown out from an air conditioner or the like in an arbitrary direction, and in particular to a flow direction control device that largely deflects the flow in the left-right direction of a horizontally elongated discharge port. related to things.

Prior Art As shown in Figures 9 and 10, a conventional flow direction control device when the aspect ratio H/W (H and W are shown in Figure 2) is small uses a plurality of curved rotating blades. 1 arranged in a row. 2 is a vertical deflection vane for deflecting the flow in the vertical direction. (Indicated by a chain double-dashed line in the figure). 3 and 4 are the left and right walls, respectively. By rotating the curved blade 1, the flow is deflected to the left and right.

Problems to be Solved by the Invention In conventional flow direction control devices, the curved blade faces to the left, so the flow is deflected well to the left, but when trying to deflect it to the right, the air flow resistance increases. , cannot be significantly deflected.
Also, when deflecting the flow to the left,
The flow collides with the wall 3 on which the upper and lower deflection vanes are arranged, making it difficult to effectively deflect the flow to a large extent. There were two problems mentioned above.

Means for Solving the Problem In order to solve this problem, the present invention provides a pair of left and right guide walls that are provided at both ends of the passageway in the longitudinal direction and have a shape that expands outward; A pair of rotatable left and right blades arranged in a row and having curved surfaces so as to follow the respective guide walls, and a rotatable blade arranged in a row with a space between the blades a plurality of blades having a curved surface; and a rotation regulating means for restricting the rotation of the blades at a position where a pair of blades near the guide wall are rotated by a predetermined angle; When a pair of blades near the guide wall is rotated by a predetermined angle, the blades are arranged in a position that promotes the adhesion of the passing flow to the curved surface of the convex side of each blade, and the blade is deflected by the blade. The guide wall and the blades are arranged at positions where the flow does not collide with the guide wall. That is, the guide wall is arranged at a position upstream of a tangent line extending from the downstream end of the blade.

Effect With the above configuration, when the blades are tilted toward the nearby guide wall, the flow passing between each blade adheres to the convex surface of each blade and is significantly deflected, and The flow in the vicinity adheres to the guide wall, and the entire flow is largely deflected in the direction of expansion of the guide wall. At this time, since the flow is deflected by the effect of adhesion to the curved surface, there is almost no decrease in the air volume, and it is possible to largely deflect the flow without changing the air volume. Furthermore, since each blade faces in the opposite direction, the flow can be deflected over a wide angle in either the left or right direction. Furthermore, the pair of blades near the guide wall is moved at a predetermined angle (this is the angle when the flow is desired to be deflected to the maximum, and is determined by the rotation regulating means).
When the blade rotates, the guide wall is configured to exist at a position upstream of the tangent extending from the downstream end of the blade, so that it adheres to the curved surface of the blade,
The flow exiting in the tangential direction of the downstream end of the curved surface effectively adheres to the guide wall and flows without colliding with the guide wall. Collision in this case is defined as an increase in surface pressure on the wall surface that is greater than atmospheric pressure due to the flow colliding with the wall.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 6. In FIGS. 1 to 3, reference numeral 5 denotes a blowing passage having a rectangular cross section and having an inlet 6 and an outlet 7. Reference numerals 8 and 9 denote a pair of left and right guide walls that are provided at both ends of the outlet 7 in the longitudinal direction and are shaped to expand outward.
(This guide wall is curved in the figure, but if it is straight, the effect will be less, but the operation will be almost the same.) 10 and 11 are arranged near the guide walls 8 and 9, respectively, and These are a pair of rotatable left and right blades having curved surfaces so as to follow the flow along the respective guide walls 8 and 9. Said blade 1
There are a plurality of blades 100 and 110 between 0 and 11, and the flow passing between each blade is caused by curved surfaces 10b and 11b on the convex side of each blade.
The blades are arranged substantially on the same axis to promote adhesion to the blades, and the spacing H between the blades is set to be smaller than the chord length l of the blades. (l and H are shown in Figure 3). Note that considering the resistance of the air flow, it is better to have a smaller total number of blades, so it is desirable that the interval H and the chord length l are approximately equal. Further, the guide walls 8 and 9 are used to control the blade 10 when the blade 10 is tilted at a predetermined angle (the angle of the blade when it is desired to deflect the flow most; as an example, the angle shown in FIG. 1).
It is configured to be located upstream of tangent lines 12 and 13 extending from the downstream end of 0. Further, rotation regulating means (stoppers) 120 and 130 for regulating the rotation angles of the vanes 10 and 11 are provided near the vanes 10 and 11, respectively. In addition,
When the blades 10 and 11 are rotated by a motor or the like, the angle range may be set on a microcomputer program instead of using a stopper.

In the above configuration, the blade 1 as shown in FIG.
At rotational positions 0 and 11 and 100 and 110, the flow continues straight between the blades, and both the left flow F _L and the right flow F _R travel straight. Next, as shown in FIG.
and 110 are tilted in the direction of the guide walls 8 and 9, respectively, the flow a in the figure is caused by the concave surface 1 of the blade 10.
Due to the action of 0a1, it adheres to the guide wall 8 and flows. In the flow of b, the interval H between the blades is the chord length l of the blade.
Since the concave surface 1 of the blade 100 is smaller than
Due to the action of 00a2, it adheres to the convex surface 10b1 and flows. Similarly, c flows while adhering to 100b2. The flow adhering to the convex surfaces of these vanes then adheres to the guide wall 8, similar to the flow a, and flows out after being deflected at a wide angle. These flows are guided by the guide wall 8.
and 9 extend tangents 12 and 1 from vanes 10 and 11
Since it is located on the upstream side of point 3, it effectively adheres to the guide wall and flows without colliding with the guide wall. As a result, the flow is deflected over a wide angle with almost no reduction in air volume. Next, as shown in FIG. 6, when the blades 11 and 110 are tilted away from the guide wall 9, the flow flows out slightly to the left without adhering to the guide wall.
As mentioned above, the blades 10 and 11 and 100 and 11
It becomes possible to deflect the flow from side to side over a wide angle or to blow it out in front according to the rotation of 0. Furthermore, since this deflection action utilizes the adhesion effect of the flow, it has the advantage of hardly changing the air volume. Moreover, since it is bilaterally symmetrical, it is possible to deflect the flow over a wide angle to both the left and right sides.

In addition, by changing the ratio of the number of blades 100 and 110, the ratio between the left flow F _L and the right flow F _R can be changed, making it possible to perform optimal blowout control depending on the purpose. becomes.

FIGS. 7 and 8 show a case where the above embodiment is applied to a wall-mounted heat pump air conditioner. In the figure, 14 is the indoor air conditioner main body, 15 is a cross flow fan, 16 is a heat exchanger, 17 is a vertical deflection louver, 18 and 19 are blades 10, 11, and 1.
Connections 20 and 21 are levers for rotating the blades 10 and 11 and 100 and 110, respectively. When the crossflow fan 15 rotates in this configuration, the flow is sucked through the heat exchanger 16, deflected at a wide angle left and right by the flow direction control device of the present invention, and vertically deflected by the vertical deflection louvers 17. It is deflected and flows out. And lever 20
By operating the and 21 to rotate the blades 10 and 11 and 100 and 110, the flow can be deflected over a wide angle in any direction, and comfortable air conditioning can be achieved regardless of the installation position of the air conditioner. I can do it.

Effects of the Invention As described above, according to the flow direction control device of the present invention, a plurality of rotatable blades curved so as to direct the flow along a pair of left and right guide walls are arranged between the respective guide walls. and so that the flow adheres to the convex surface of each blade, so that when the pair of blades near the guide wall is rotated by a predetermined angle, the flow deflected by the blade will not collide with the guide wall. Since the configuration includes the guide wall and the blades, the following effects are obtained.

(1) The flow is deflected over a wide angle to a desired position by utilizing the adhesion effect of the flow to the convex surface of the curved blade and the adhesion effect of the flow to the guide wall arranged to prevent the flow from colliding. becomes possible.

(2) Since each blade faces in the opposite direction, it is possible to deflect the flow over a wide angle to the right or left.

(3) Since the structure is such that the flow does not collide with the guide wall, the air volume hardly changes even if the direction of the flow is changed.

(4) Due to the above effects, when applied to an air conditioner etc., air conditioning flow can be sent to a wide area regardless of the installation position of the air conditioner, and a great air conditioning effect can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a plan sectional view of a flow direction control device showing an embodiment of the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is a partially enlarged view of FIG. 1, and FIGS. Figure 6 is a plan sectional view of the same device, Figure 7 is a front sectional view when the same device is applied to a wall-mounted heat pump, Figure 8 is a side sectional view of the same, and Figure 9 is a conventional flow direction control. A plan sectional view of the device, FIG. 10 is a front view of FIG. 9. 5...Aisle, 6...Entrance, 7...Exit, 8,9
... Guide wall, 10, 11, 100, 110 ... Feather, 12, 13 ... Tangent line.

Claims (1)

[Scope of Claims] 1. A pair of left and right guide walls which are provided at opposite ends of an outlet of a passage having an inlet and an outlet and have a shape that expands outward; a pair of rotatable blades each having a curved surface that allows the flow to flow along each of the guide walls; and a plurality of rotatable blades each having a curved surface and arranged in a line with an interval between the pair of blades. , a rotation regulating means for regulating the rotation of at least a pair of blades near the guide wall among the blades to within a predetermined angle, and when the pair of blades near the guide wall are rotated by the predetermined angle, the blade A flow direction control device in which the guide wall is arranged at a position where the flow deflected by the flow direction does not collide with the flow direction control device. 2. The guide wall is configured such that when a pair of blades near the guide wall is rotated by a predetermined angle, the guide wall is located at a position upstream of a tangent extending from the downstream end of the blade. Flow direction control device as described in . 3 A plurality of blades are divided into two left and right blade groups with respect to a pair of left and right blades respectively arranged near a pair of guide walls, and each blade group is arranged in the same direction as the left and right pair of blades in the vicinity of each blade group. The flow direction control device according to claim 1, which is configured to rotate by the same angle.