JPH0215785B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a flow direction control device that is installed at an air outlet of an air conditioner or the like and deflects the flow from an air source in an arbitrary direction. .

Structure of a conventional example and its problems A conventional flow direction control device is shown in FIG. Reference numeral 1 denotes an air blowing source, 2 a blowing passage, and 3 a flow deflection section composed of a plurality of louvers. The flow sent from the blowing source 1 passes through the blowing passage 2 and is deflected in the vertical direction in the figure at the flow deflecting section 3.
Originally, in a heat pump, in order to equalize the temperature distribution in the room to be air-conditioned, it is desirable to control the blowing flow direction to downward blowing during heating and horizontal blowing during cooling. However, as shown by the broken line in Figure 1, when the air is deflected downward, the louvers 3 almost block the air outlet, resulting in a significant drop in air volume and making it impossible to obtain a sufficient air conditioning effect. I couldn't do it.

Furthermore, if a large amount of hot air is blown downward during heating, the amount of hot air may be so large that it may cause discomfort when it hits the human body. Experiments have confirmed that if the purpose is to maintain a constant temperature distribution, an almost constant temperature distribution can be obtained by blowing a certain amount of air downward and the rest in the horizontal direction. Therefore, in order to improve the temperature distribution and eliminate the discomfort caused by the blown hot air, a function for blowing out a certain amount of hot air in a downward direction and the rest in a horizontal direction, that is, a function of dividing the flow, has been necessary. It has been impossible to provide the above-mentioned flow dividing function in conventional flow direction control devices.

Purpose of the Invention The present invention aims to eliminate these conventional drawbacks by significantly deflecting the flow with almost no change in the volume of blown air, and by making the flow control member into a special shape to achieve diversion operation. This improves comfort during air conditioning.

Structure of the Invention In order to achieve this object, the present invention provides a flat wall 6 for one wall of the blowout passage 5, a curved wall 7 having a gradually enlarged downstream end of the wall opposite to the flat wall 6, and A part of the flow flowing through the curved wall 7
The bias protrusion 8 is deflected toward the plane wall 6.
, the downstream side of the bias protrusion 8 is configured with a substantially planar wall 9, and the flow control member is a columnar body that rotates in the blowout passage 5 about a rotation axis 11 that is substantially parallel to the planar wall 6 and substantially perpendicular to the flow. 10 is provided, and the cross section of the flow control member 10 is approximately arc-shaped with the head 10a having the center of the arc eccentrically relative to the rotating shaft 11;
One side of the extension of the head 10a has a first substantially flat surface 10b, and the other side has a first substantially flat surface 1.
The head 10a has a substantially arc-shaped surface 10c that has an adhesive effect on the flow flowing between the bias protrusion 8 and the flow control member 10 when the downstream end of the head 10b is rotated in a direction approaching the curved wall 7. The flow control member 10 has a second substantially flat surface 10d that faces and forms an obtuse angle with the first substantially flat surface 10b.
is set substantially horizontally, the flow that hits the head 10a flows along the top and bottom of the flow control member 10, and the downstream end of the first substantially flat surface 10b rotates in a direction approaching the curved wall 7. In this case, the upper flow of the upper and lower flow is approximately arc-shaped surface 10c.
and the downward flow is on the first substantially flat surface 10.
b, and if the flow control member 10 is further rotated so that the flow is divided, the flow that hits the first and second substantially flat surfaces 10b and 10d will flow onto the wall 9 and the curved wall 7, respectively. When the flow control member 10 is set so that the flow is divided into two directions, upward and downward, regardless of changes in the amount of flow exiting from the blowout passage 5, a constant flow rate is always maintained downward. A control means 13 is provided for adjusting the distance between the flow control member 10, the curved wall 7, and the bias protrusion 8 so that the flow is blown out.

With this configuration, the flow adheres to or separates from the curved wall 7 in accordance with the rotation of the flow control member 10, resulting in a change in the blowing direction with almost no change in the air volume. Further, by rotating the flow control member 10, it is possible to perform a diversion operation in which the flow is divided into two directions, horizontally and downwardly.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below, but first, for better understanding, the basic technology of the present invention will be explained using the drawings of FIGS. 2 to 7. In the figure,
Reference numeral 4 indicates a blowing source for sending out a flow (such as a sirotskov fan, a cross-flow fan, or any other type), 5 indicates a blowout passage, 6 indicates a flat wall forming one side of the longitudinal wall of the blowout passage 5, and 7 indicates a curved wall forming the other side. It is configured in a gradually expanding shape. A bias projection 8 is provided on the flat wall 6 to deflect a portion of the flow toward the curved wall. A substantially planar wall 9 is formed downstream of the bias protrusion 8 . Reference numeral 10 denotes a flow control member, which is provided approximately parallel to the longitudinal direction of the blowout passage 5 and is connected to the rotation shaft 11.
It rotates around . Further, the flow control member 10 has a head 10a having a substantially arc shape whose center O is eccentric with respect to the rotation axis 11, and one side on the extension line of the head 10a is a first substantially flat surface 1.
0b, the other is a substantially arc-shaped surface 10c having a substantially arc-shaped adhesion effect, and the second substantially flat surface 1
It is a columnar body consisting of 0d.

According to the configuration of this embodiment, the flow control member 10
The following operations are shown by rotating .
First, the case where the flow control member 10 is rotated to the position shown in FIG. 3 will be described. In this case, the air source 4
The flow sent out from the flow control member 10 is divided into an upper flow Fa and a lower flow Fb by the head 10a. As a result of the upper flow Fa being partially bent downward in the figure by the action of the bias protrusion 8, the flow control member 1
It flows along the substantially arc-shaped surface 10c of 0. Since the substantially arc-shaped surface 10c faces slightly upward as shown in the figure, Fa flows along the wall 9 provided on the downstream side of the bias protrusion 8, and is blown out in a substantially horizontal direction. On the other hand, the flow on the lower side
Since the first substantially flat surface 10b faces substantially horizontally, Fb is blown out in the horizontal direction. Therefore, the entire blowout flow is blown out in a substantially horizontal direction as shown in the figure.

Next, the case where the flow control member 10 is rotated to the position shown in FIG. 4 will be described. In this case, the upper flow Fa flows along the substantially arcuate surface 10c due to the influence of the bias protrusion 8, as in the previous case. At this time, as shown in the figure, since the substantially arc-shaped surface 10c faces slightly downward, Fa also blows out facing slightly downward. On the other hand, since the first substantially flat surface 10b faces downward, the lower flow Fb adheres to the curved wall 7 due to this action and flows downward. As a result, the combined flow of the upper flow Fa and the lower flow Fb flows downward as shown in the figure.

Next, the case where the flow control member 10 is rotated to the position shown in FIG. 5 will be described. In this case, part of the upper flow Fa is deflected to the lower side of the diagram due to the influence of the bias protrusion 8, but since the first substantially flat surface 10b of the flow control member 10 faces upward, the flow
Fa blows out along the wall 9 in a substantially horizontal direction. On the other hand, the flow Fb on the lower side adheres to the curved wall 7 by the action of the second substantially flat surface 10d opposite to the substantially arc-shaped surface 10c and is blown downward. In this case, since the two flows Fa and Fb flow along the wall 9 and the curved wall 7, respectively, they do not merge with each other but flow out in separate directions, horizontally and downward, resulting in a branching operation.

As described above, by rotating the flow control member 10, the flow can be deflected over a wide angle downward from the horizontal direction, and can be blown out horizontally and downwardly. In addition, the flow control at this time is not by forcibly bending the flow, but by deflecting it by using the effect of the flow adhering to the flow control member 10, the curved wall 7, etc., so the air volume is almost reduced. There's nothing to do. Experimental data for an example of this flow direction control device are shown in FIGS. 6 and 7. FIG. 6 shows the deflection angle α of the flow relative to the rotation angle θ of the flow control member 10.
(θ and α are shown in Figure 4)
FIG. 7 shows the relationship between the rotation angle θ of the flow control member 10 and the air volume reduction rate. As the angle θ increases in Figure 6, the deflection angle α also increases proportionally, and when θ is approximately 60°, α becomes approximately
Reaches 80°. Furthermore, when θ is set to 100° or more, the flow is divided into a lower component and a horizontal component, resulting in a divided flow state. FIG. 7 shows the rate of decrease in air volume at this time, and it can be seen that even if the angle θ is varied over a wide range, the rate of decrease is only about 10%.

As shown by the solid line and the dashed line in the configuration of the above-mentioned basic technology, the present invention has a flow path width H through which the lower flow Fb passes and a flow path width H through which the upper flow Fa passes, depending on the rotation angle of the flow control member 10. The channel width I changes. That is, as the flow control blade 6 rotates, the channel width changes from H ₁ to H ₂ and from I ₁ to I ₂ , and the flow rate ratio (divided flow ratio) of Fa and Fb also changes. Therefore, by controlling the rotation of the flow control member 10, it is possible to control the flow rate of the downflow flow Fb.
As mentioned above, the most efficient blowout control is to keep the flow rate of the downward blowing flow constant when dividing the flow.
On the other hand, as shown in Fig. 9, a wind speed sensor 12 is installed at the outlet, and this is used to calculate the flow rate (the wind speed distribution at the outlet is almost constant, and if the area of the outlet is multiplied by the wind speed, the flow rate is If the rotation of the flow control member 10 is controlled by the control circuit 13 so that a predetermined flow rate is always maintained, a constant flow can always be blown downward. In this case, the predetermined flow rate of the downward flow differs depending on the size of the room to be air-conditioned, so the control circuit 1
All you have to do is store the value in 3. Thereby, even if the total flow rate changes, it is possible to control the flow rate so that a constant and appropriate flow rate is always blown downward.

In addition, when controlling the blowout of something such as an air conditioner that changes the air volume in stages such as strong and weak, the control circuit should be configured to control the rotation of the flow control member 10 in conjunction with the air volume switching notch. For example, control can be easily performed without using the air volume sensor 12.

Effects of the Invention As described above, the flow direction control device of the present invention provides the following effects.

(1) By rotating the flow control member 10, the adhesion effect to the curved wall 7 is activated to perform deflection and division, so wide-angle deflection and division can be performed with almost no change in air volume.

(2) The above effects can be obtained by only rotating one rotating shaft 11, and it is also possible to change the division ratio.

(3) When dividing the flow, the configuration allows a constant flow to be blown downward regardless of changes in the total flow rate, so in addition to the effect of (1) that the flow can be blown in any direction, the most It becomes possible to automatically realize an ideal balloon state.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a conventional flow direction control device, Figs. 2 to 5 are sectional views showing the basic technology of the flow direction control device of the present invention, and Figs. 6 to 7 are sectional views of the basic technology of the present invention. FIG. 8 is a sectional view of an embodiment of the present invention, and FIG. 9 is a perspective view thereof. 5...Blowout passage, 6...Plane wall, 7...Curved wall, 8...Bias protrusion, 9...Substantially planar wall, 10...Flow control member, 10a...Head, 1
0b...First substantially flat surface, 10c...Substantially arc-shaped surface, 10d...Second substantially flat surface, 11
...rotating shaft, 13...control means.

Claims (1)

[Claims] 1. One wall of the blowout passage 5 is a flat wall 6, and the downstream end of the wall opposite to the flat wall 6 is a curved wall 7 with a gradually enlarged shape, so that the flow flowing through the blowout passage 5 is A bias protrusion 8 for deflecting a portion toward the curved wall 7 is provided on the plane wall 6, and the downstream side of the bias protrusion 8 is constituted by a substantially planar wall 9, and the blowing passage 5 is substantially parallel to the plane wall 6. A columnar flow control member 10 that rotates around a rotation axis 11 that is substantially perpendicular to the flow is provided, and the cross section of the flow control member 10 is such that the head 10a is approximately eccentric from the rotation axis 11 with the center of the circular arc. The head 10 is shaped like an arc.
On one side of the extension line of a is a first substantially flat surface 10.
b, the other having an adhesion effect on the flow flowing between the biasing projection 8 and the flow control member 10 when the downstream end of the first substantially flat surface 10b is rotated in a direction approaching the curved wall 7. Almost arc-shaped surface 10
c, and a second substantially flat surface 10d facing the head 10a and forming an obtuse angle with the first substantially flat surface 10b, the flow control member 10
is set substantially horizontally, the flow that hits the head 10a flows along the top and bottom of the flow control member 10, and the downstream end of the first substantially flat surface 10b approaches the curved wall 7. When the rotation occurs, the upper flow of the vertically divided flow adheres to the substantially arc-shaped surface 10c, the lower flow adheres to the first substantially flat surface 10b, and the flow control member 10 When the flow is rotated so that the flow is divided, the flow that hits the first and second substantially flat surfaces 10b and 10d adheres to the wall 9 and the curved wall 7, respectively, and flows. When the control member 10 is set so that the flow is divided into two directions, up and down, the flow control member 10 is configured so that a constant flow rate is always blown downward regardless of changes in the amount of flow exiting from the blowout passage 5. a flow direction control device comprising control means 13 for adjusting the distance between the curved wall 7 and the bias projection 8; 2. The control means 13 is comprised of a drive means 12 that rotates the rotation shaft 11 of the flow control member 10, and a control section that detects the flow rate and controls the rotation angle of the drive means 12 accordingly. Flow direction control device according to item 1.