JPH0338499B2 - - 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; The part facing the flow has an arc shape, and the downstream side of the part facing the flow is formed with a concave surface and a convex surface, and the concave surface extends in a direction along which the flow follows each of the pair of guide walls. A pair of rotatable blades having a curved airfoil shape, and a plurality of rotatable blades having the same or substantially similar shape to the pair of blades and arranged in a line with a space between the pair of blades. It is equipped with feathers.

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 nearby flow adheres to the guide wall by the action of the concave surfaces of the pair of left and right vanes, 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. In addition, since the blades have an airfoil shape in which the portion facing the flow has an arcuate shape, the flow flows smoothly along the blades, and the flow path resistance is further reduced. 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.

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 has a curved shape in the figure, but even if it were straight, the effect would be less, but the operation would be almost the same. 10 and 11 are arranged near the guide walls 8 and 9, as shown in the enlarged view in FIG. It has a circular arc shape, and the downstream side thereof is formed by concave surfaces 10b, 11b and convex surfaces 10c, 11c, and the concave surfaces 10b, 11b are curved in the direction in which the flow follows the pair of guide walls 8, 9, respectively. A pair of airfoil-shaped blades that can rotate freely. Reference numerals 12 and 13 designate a plurality of rotatable blades having substantially similar shapes to the pair of blades 10 and 11. Said blades 12, 13
are arranged substantially on the same axis so as to promote the flow passing between the respective blades to adhere to the curved surfaces 12c and 13c on the convex sides of the respective blades,
In addition, the interval H between the blades is set to be smaller than the chord length l of the blades. Note that in consideration of airflow resistance, it is better to have as few blades as possible, so it is desirable that the interval H and the chord length l are approximately equal.

In the above configuration, the blade 1 as shown in FIG.
At rotational positions of 0, 11 and 12, 13, the flow continues straight between the blades, and both the left flow F _L and the right flow F _R after blowing out travel straight.
Next, as shown in FIG. 5, when the blades 10 and 11 and 12 and 13 are tilted in the direction of the guide walls 8 and 9, respectively, the flow a in the figure is guided by the action of the concave surface 10b of the blade 10. It adheres to the 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 12 is smaller than
2b, the liquid adheres to the convex surface 10c and flows. Similarly, the flow c flows while adhering to the convex surface 12c. 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. As shown in FIG. 6, when the blades 11 and 13 are tilted away from the guide wall 9, the flow flows out slightly to the left without adhering to the guide wall. As above, feathers 10 and 1
According to the rotations of 1, 12, and 13, it is possible to deflect the flow from side to side over a wide angle or blow it out to the front. In addition, this deflection action utilizes the adhesion effect of the flow, and the shape of the blade is an airfoil with the head 10a and other parts having an arc shape, so that separation of the flow does not occur, and the airflow rate is hardly changed and the blade has a wide angle. It has the advantage of being able to perform a wide range of deflections. In addition, the feather 10,
Since the blades 12 and the blades 11 and 13 face in opposite directions, the flow can be deflected at a wide angle in the left-right direction to twice the normal width.

In addition, by changing the ratio of the number of blades 12 and 13, 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 louver for vertical deflection, and 18 and 19 are connections for simultaneously rotating blades 10 and 11 and 12 and 13, respectively. Mr. 20 and 21 are feathers 10 and 11 and 1
This is a lever for rotating 2 and 13. When the crossflow fan 15 rotates in this configuration, the flow is sucked through the heat exchanger 16 and is deflected at a wide angle left and right by the flow direction control device of the present invention, and the flow is deflected up and down by the up and down deflection louvers. It is deflected and flows out. By operating the levers 20 and 21 and rotating the blades 10 and 11 and 12 and 13, the flow can be deflected over a wide angle in any direction, providing comfortable air conditioning regardless of the installation position of the air conditioner. It can be realized.

Effects of the Invention As described above, according to the flow direction control device of the present invention, a pair of left and right guide walls and a portion disposed near the pair of guide walls and facing the flow have an arc shape, and The downstream side of the part facing the flow is formed with a concave surface and a convex surface, and the concave surface is a pair of airfoil-shaped and rotatable blades that are curved in a direction that allows the flow to follow each of the pair of guide walls. and a plurality of rotatable blades having substantially the same or similar shape to the pair of blades and arranged in a row with a space between them, so that the blade is curved. In addition to utilizing the adhesion effect of the flow to the convex surface of the blade and the adhesion effect of the flow to the guide wall, the blade has an airfoil shape with an arc-shaped head, which prevents separation of the flow and reduces the air volume. It becomes possible to deflect the flow to an arbitrary position over a wide angle with almost no change. Additionally, since each blade faces in opposite directions left and right, it is possible to deflect the flow over a wide angle, twice the normal width. As a result, when applied to an air conditioner or the like, 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 drawings]

FIG. 1 is a plan sectional view of a flow direction control device showing one 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. The figures are respectively a plan sectional view of the same flow direction control device, Fig. 7 is a front sectional view when the same device is applied to a wall-mounted heat pump, Fig. 8 is a side sectional view of the same, and Fig. 9 is a conventional flow direction control device. A plan sectional view of the device, FIG. 10 is a front view of FIG. 9. 5...Aisle, 6...Entrance, 7...Exit, 8,9
...Guidance wall, 10, 11, 12, 13...feathers.

Claims (1)

[Scope of Claims] 1. A pair of left and right guide walls with a shape that spreads outward and are provided at opposite ends of the outlet of a passage having an inlet and an outlet, and a pair of left and right guide walls each disposed near the pair of guide walls and facing the flow The blade has a circular arc shape, and the downstream side of the part facing the flow is formed with a concave surface and a convex surface, and the concave surface is curved in a direction along which the flow follows each of the pair of guide walls. a pair of rotatable blades having a similar shape, and a plurality of rotatable blades having substantially the same or similar shape to the pair of blades and arranged in a line with a space between the pair of blades. Flow direction control device with. 2. The flow direction control device according to claim 1, wherein the pair of left and right guide walls and the plurality of blades are symmetrical in shape and arrangement.