JPH02103334A - Wind direction altering device - Google Patents

Abstract

PURPOSE:To prevent a drop in an air capacity, and prevent an increase in noise by supporting pivotally a louver at a specific distance from the inner wall in the central part of a blow-off port, shaping said louver so that it may extend downward from an axis and curve to an outer wall in an arcuate manner of a specific radius, and integrating the louver and an outside wall corner during rotation. CONSTITUTION:A louver 13 is pivotally supported at the distance of W from an inner wall 11 and forms an arcuate shape which curves to an outer wall side downward to an axis 14 and its radius R is larger than W. When a fan drives, wind flows to a blow-off port 9b. When the louver 13 faces down, the pressure drop is minimized so that an air capacity may not be lowered. When the louver 13 is adapted to blow-up, the tip of the shaft on the opposite side is brought into contact with a corner section 15 of an outer wall 10, thereby integrating the louver 13 with a horizontal section of an outer wall 15. Wind passes through a space between a louver shaft 14 and the inner wall 11, and produces Coanda effect by R>W so that it may flow along a ceiling member 16. It is, therefore, possible to prevent a drop in the air capacity without an increase in noise, and make compact a decorated board as well.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention mainly relates to a wind direction changing device in an air conditioner or the like.

Conventional technology Recently, ceiling-embedded air conditioners have been designed with space-saving decorative panels and consideration has been given to match the design of the room. is becoming desperately needed.

An example of the wind direction changing device of the conventional air conditioner mentioned above will be described below with reference to the drawings.

FIG. 3 is a vertical cross-sectional view of a conventional wind direction changing device.

In Fig. 3, 1a is a decorative board, and the part exposed from the ceiling on the lower surface of the air conditioner, 1b is an air outlet located at the end of the decorative board, 2 is an outer wall of the air outlet 1b, and 3 is an inner wall of the air outlet 1b. ,
Reference numeral 4 denotes a louver pivotally supported approximately at the center of the air outlet 1b;
It extends in the vertical direction and has an arc shape with the tip of the image curved toward the outer wall 2 side.

However, the position shown by the solid line is the top blow state, and the position shown by the broken line is the bottom blow state. 6 is a curved surface portion of the outer wall 20, and 7 is a protrusion portion of the inner wall 3. 8 is a ceiling material, which is in close contact with the horizontal portion of the outer wall 6. A is a ceiling material 8 to avoid the curved surface part 6
B is the distance between the edge of the decorative board 1a and the vertical part of the outer wall 2,
The lunge dimension is determined in consideration of covering the cut of the ceiling material 8.

The following operation of the wind direction device configured as above will be explained.

First, when a fan (not shown) is operated, air flows through the air outlet 1b and when the looper 4 is blowing downward (the position shown by the broken line),
Pressure loss (hereinafter referred to as pressure loss) is small and air volume hardly decreases.

Next, when the louver 47&: upward blows K (the position shown by the solid line), the wind blows through the gap between the lower end of the louver 4 and the curved surface θ.
, and also flows along the ceiling material 8. Also,
Wind also flows through the gap between the upper end of the louver 4 and the inner wall 3, and is changed in direction by the protrusion 7 and merges with the flow along the curved surface portion 6.

Problems to be Solved by the Invention However, in the above configuration, when the louver 4 is in an upward blowing state, the louver 4 itself becomes close to closing the air passage 1b, and the gap between the lower end of the louver 4 and the outer wall 2 is reduced. Furthermore, since the gap between the upper end of the louver 4 and the inner wall 3 is small, the pressure loss increases significantly, the air volume decreases significantly, and there are disadvantages in that energy saving is not achieved and noise is increased. In addition, the curved surface portion 6
Because of this, the air outlet looks wide due to its design, making it difficult to create an extremely narrow air outlet.

Furthermore, when fitting the decorative board 1a into the ceiling, since the curved surface part 6 is drawn on the ceiling material 8, dimension A must be ensured, and the dimension B of the decorative board 7 lunge is large. It also had the drawback of going against the trend of miniaturization.

As mentioned above, when the looper is in an upward blowing state, the air volume decreases significantly, the noise increases, and the curved surface of the outlet makes it appear wider.
In addition, there was a problem in that the decorative board could not be made smaller because the ceiling material came into contact with the curved surface.

In view of the above-mentioned problems, an object of the present invention is to provide a wind direction changing device that does not significantly degrade the scenery and reduce noise regardless of the state of the louver, makes the air outlet look thinner, and can make the decorative board smaller. do.

Means for Solving the Problems In order to solve the above problems, the wind direction changing device of the present invention pivots a looper at a distance W from the inner wall at approximately the center of the air outlet, and the shape of the looper is such that It is an arc-shaped piece with a radius R (but larger than W) that extends downward and curves toward the outside wall, and has a structure that when rotated, it touches the corner of the outside wall and forms a curved surface that is integrated with the horizontal part of the outside wall. It is something.

Effects The present invention has the above-described configuration, so that even when the looper is in an upward blowing state, an air path of about half of the outlet is secured between the looper shaft and the inner wall, and pressure loss is small, so there is little reduction in air volume and little increase in noise. In addition, since the looper shape is a curved surface and satisfies the dimensional condition R>W, the wind adheres to the looper, creating a Coanda effect, flowing along the horizontal part of the outer wall and also along the ceiling material, which reduces the operating angle of the looper. In contrast, the actual blowout angle deviation can be large. Furthermore, since the outer wall is L-shaped, the air outlet looks narrow and the gap between it and the ceiling material can be reduced, allowing the decorative board to be made smaller.

EXAMPLE Hereinafter, a wind direction changing device according to an example of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of the wind direction changing device, and FIG. 2 is a vertical sectional view of the wind direction changing device.

In Figures 1 and 2, 9a is a decorative board, which is exposed from the ceiling on the lower surface of the air conditioner, 9b is the outlet located at the end of the decorative board 9a, and 1o is the outer wall of the outlet 9b, which is L-shaped. It has a vertical part and a horizontal part. Reference numeral 11 denotes an inner wall of the outlet, which has a vertical portion and a horizontal portion, and has a protrusion 12 at the boundary between the two. Reference numeral 13 denotes a louver that is pivotally supported at a distance W from the vertical part of the inner wall 11 at approximately the center of the air outlet 9b, and extends only downward from the shaft 14 and curved toward the outer wall with a radius R (but larger than W).
When rotated, it contacts the corner 15 of the outer wall 1°, forming a curved surface that is integrated with the horizontal portion of the outer wall 1o. Reference numeral 16 denotes a ceiling material, which is in close contact with the horizontal portion of the outer wall 1o. C
is the distance between the end of the ceiling material 16 and the vertical part of the outer wall 10, and D
is the 2-lunge dimension of the decorative board, which is determined in consideration of covering the cut of the ceiling material 16.

The operation of the wind direction changing device configured as described above will be described below with reference to FIGS. 1 and 2.

First, when the fan (not shown) is operated, the air outlet sbK
When the wind is flowing and the louver 13 is facing downward (the position indicated by the broken line), the pressure loss is small and the air volume hardly decreases.

Next, when the louver 13 is turned upward (position shown by the solid line)
, the opposite end of the louver 13 and the corner portion 15 of the outer wall 10 come into contact with each other, so that the louver 13 and the horizontal portion of the outer wall 16 form an integral curved surface portion.

The wind blown from the fan passes between the louver shaft 14 and the inner wall 11, and since the curved surface of the louver 13 satisfies the dimensional condition R>W, a Coanda effect occurs and flows along the curved surface, causing the outer wall 15 to flow along the curved surface.
and along the ceiling material 16. In addition, the direction of the flow along the inner wall 11 of the wind passing between the looper shaft 14 and the inner wall 11 is changed by the protrusion 12, and the direction of the flow along the inner wall 11 is changed by the
merges with the flow that follows.

As described above, according to this embodiment, the louver is pivotally supported at a position approximately at the center of the air outlet at a distance W from the inner wall, and the shape of the louver is extended downward from the axis and curved toward the outer wall with a radius R (however, W The louver has a circular arc shape (larger), and when rotated, it touches the corner of the outer wall and forms a curved surface that is integrated with the horizontal part of the outer wall, thereby reducing pressure loss even when the louver is blown upward. This reduces air flow, prevents a large drop in air volume, and reduces noise, contributing to energy savings.

In addition, by making the outer wall L-shaped, the air outlet looks narrower and the distance between the ceiling material and the vertical part of the outer wall can be minimized, and since the flange of the decorative board is small, the entire decorative board can be made smaller. .

Effects of the Invention As described above, in the present invention, a louver is pivotally supported at a position approximately at the center of the air outlet at a distance W from the inner wall of the air outlet, and the shape of the louver is extended downward from the axis and curved toward the outer wall. The louver is shaped like an arc with a radius R (but larger than Wj!), and when rotated, it touches the corner of the outer wall and forms a curved surface that is integrated with the horizontal part of the outer wall. Even in the state
Since there is little pressure loss, there is little drop in air volume, which contributes to energy savings, and there is also little increase in noise. In addition, the Coanda effect allows air to flow smoothly along the curved surface of the louver, making it possible to change the wind direction to increase the actual blowout angle even if the louver operation angle is small, thereby realizing comfortable air conditioning.

In addition, by making the outer wall L-shaped, the air outlet looks thinner and improves the interior design, and the ceiling material can be packed into the vertical part of the outer wall as much as possible, reducing the size of the decorative board flange to cover the cut of the ceiling opening hole. The overall size of the decorative board can be reduced, contributing to space saving.

[Brief Description of the Drawings] Fig. 1 is a perspective view of a wind direction changing device according to an embodiment of the present invention, Fig. 2 is a vertical sectional view of the above-mentioned wind direction changing device, and Fig. 3 is a vertical sectional view of a conventional wind direction changing device. It is a diagram. 9b...Air outlet, 1o...Outer wall, 11
...inner wall, 13...louver, 14...
...Axis, 16...Corner section, W...
・Distance, R...Radius. Name of agent: Patent attorney Shigetaka Awano and 1 other person 2nd
Figure 3...-Outlet 10% Constant 14-axis

Claims (1)

[Claims] an air outlet, an L-shaped outer wall constituting the air outlet, an inner wall opposing the outer wall, and an air outlet that is supported by a shaft at a distance W from the inner wall at a substantially central portion of the air outlet and extends downward from the shaft. The louver is curved toward the outer wall and has a radius R larger than the distance W, and when the louver is rotated, the opposite end of the louver is in contact with the L-shaped corner of the outer wall. A wind direction changing device.