JPS604366B2 - flow direction control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention uses a control plate to control the upstream flow of a negative pressure control type flow direction control device, thereby making it possible to have a small depth and a large deflection angle. It is an object of the present invention to provide a flow direction control device that can perform a swing operation within an arbitrarily set range of blowout deflection angles.

FIG. 1 shows a conventional negative pressure control type flow direction control device. The main body 1 of the flow direction control device includes a nozzle 2 and a control port 3.
R, 3L and control port closing plate (hereinafter referred to as closing plate) 4R
, 4L and guide walls 5R, 5L. The flow flowing in from the direction of the arrow is constricted by the nozzle 2 and blows out while involving the surrounding flow. At this time, control ports 3R, 3
The flow inside L is also involved, but when the closing plates 4R, 4L are open, the pressure of the amount involved by the flow is compensated for by passing from outside the control port between the closing plates 4R, 4L and the main body 1. The pressure inside control ports 3R and 3L does not change and nozzle 2
The flow blown out from the control port is not affected by the pressure of the control port and blows out immediately. On the other hand, when the control port 3R (the same applies to 3L) is closed by the closing plate 4R, the pressure inside the control port 3R is not supplemented from the outside and becomes a negative pressure. Therefore, the flow is pulled in the direction of the control port 3K, and the flow is deflected along the guide wall 5M. The flow along the guide wall 5M adheres to the guide wall 5R due to the Coanda effect, and the flow is largely deflected as a whole. That is, the flow is deflected in the direction in which the control port 3R is closed. As described above, in the negative pressure control method, the flow is attracted by closing the control ports 3R and 3L, and then the Coanda effect is used to attach and deflect the flow, so the flow can be switched by opening or closing the control ports. This is simple because only one deflection angle is required, but in order to obtain a large deflection angle, it is necessary to effectively use the Coanda effect with the guide wall, and for this purpose, the dimensions of the guide wall had to be increased. Therefore, since the size of the entire flow direction control device increases, a device with smaller dimensions and a larger deflection angle has been desired in terms of space and cost. The present invention eliminates the drawbacks of the prior art. The invention comprises one nozzle with a restriction in the flow direction;
a control port provided adjacent to the nozzle downstream of the nozzle and adapted to communicate with the atmosphere; an upstream end located upstream of the nozzle; and a downstream end located upstream of the downstream end of the control port. a control plate that rotates around an axis that controls the streamline state of the fluid arranged in the control port, and an upstream end located downstream of the control plate near the downstream end of the control port;
A guide wall is arranged so that the flow follows the guide wall by changing the flow direction of the nozzle outlet, and the control port can be opened and closed.As a result, by directing the flow along the guide wall by the control plate, ``A large deflection angle can be obtained in a small space, and it is also possible to perform swing operations by opening and closing the passageway in any flow direction set by the control board.

Hereinafter, one embodiment of the present invention will be described in detail with reference to FIGS. 2 to 7.

The main body 1 of the flow direction control device includes a nozzle 2 and a control port 3R.
, 3L and control port closing plate (hereinafter referred to as closing plate) 4R,
4L, side walls 5R, 5L and control plate 6 (this is the shaft 7
(rotating around the center). In the figure, the control plate 6 is located on the upstream and downstream sides of the nozzle, but the effect can be obtained whether the control plate 6 is placed entirely on the upstream side or on the downstream side. In FIG. 4, reference numeral 11 indicates an upper cover, and 12 indicates a lower cover, and the shaft 7 is supported by holes 11a and 12a provided in the upper cover 11 and the lower cover 12. 13
1 is an intermediate plate, and 14 is a control port communication port.

The closing plate 4 is configured to rotate by being transmitted with the rotation of the windmill 10 via the reduction gear part 15, and to open and close the control port delivery row 4. The rotation speed of the closing plate 4 can be changed arbitrarily by a reduction gear part 15. The windmill 10 is positioned so that it is rotated by a portion of the flow. The flow to the wind turbine 10 is controlled by a flow closure plate 17.
The flow closure plate 17 rotates around a fixed shaft 18 and is rotated by the displacement of a cam 16 communicating with the shaft 7 to close the wind turbine 10.
It is designed to control the flow of operation. That is, the flow to the wind turbine is controlled by the flow closing plate 17 according to the rotation of the shaft 7, and the activation/stopping of the rotation of the wind turbine 10 is determined. The dial 19 is attached to the shaft 7, and as the dial 19 rotates, the control plate 6 and the cam 16 are configured to move together. FIG. 5 shows an example in which the present invention is applied to a wall-mounted heat pump, in which outside air is blown through a heat exchanger 8, introduced, passed through a fan 9, and the blowing direction is controlled by the flow direction control device 1 of the present invention. It is configured so that it will come out. 26 is a casing, and 27 is a rear guider.

Next, the operation will be explained.

If the control plate 6 faces the front, the flow flowing in the direction of the arrow in FIG. 2 does not adhere to the guide walls 5R, 5L and blows out to the front. The control board 6 is on the right as shown in Figure 3 (
The same goes for the left side. ) If the flow is tilted, the flow will flow toward the guide wall 5.
It collides with R and then adheres to the guide wall due to the Coanda effect and flows out. Since the degree of adhesion varies depending on the way the flow impinges on the guide wall, that is, the inclination angle of the control plate 6, the blowout deflection angle can be arbitrarily changed by changing the control plate angle. As mentioned above, since the flow is directed against the guide wall by using a control plate, the flow is more likely to adhere to the guide wall compared to a suction method such as a negative pressure method. Even if the wall dimensions are small, a large deflection angle can be achieved. In FIG. 4, when the dial 19 is rotated, the control plate 6 is rotated to change the blowing direction. Further, since the cam 16 also interlocks with the dial 19, the rotation of the closing plate 4 can be activated and stopped by rotating the dial 19 and moving the cam 16 to activate and stop the rotation of the wind turbine 10. can. Closing plate 4
The rate of activation and stopping can be arbitrarily changed depending on the shape of the cam 16, but in this case, the closing device 4 rotates within the range in which the dial makes a half turn, that is, the range in which the control plate 6 makes a half turn, and stops during the remaining half turn. Create a structure that allows On the other hand, since the upstream and downstream sides of the control plate 6 are symmetrical, the same blowing angle can be obtained even if the control plate 6 is reversed by 180 degrees.

Therefore, with such a configuration, two states can be obtained: a case where the closing plate 4 is rotating and a case where the closing plate 4 is not rotating at the same blowing angle. A case will be described in which the control plate angle is set at a certain position and the closing plate 4 is rotated. Example 6
This will be explained along with the drawings and FIG. FIG. 6 shows a case where the control board 6 is set to blow from the front, and FIG. 7 shows a case where the control board 6 is tilted slightly to the right.
In each figure, the case where the control port is open on both sides, the case where the control port is closed on the right side, and the case where the control port is closed on the left side are shown. First, a case will be described in which the control board 6 is configured to blow from the front. In FIG. 6, when both sides of the control port are open, the pressure inside the control port 3 does not change, so the flow is blown out to the front. When the right control port is closed, the pressure inside the right control port becomes negative, so the flow is deflected to the right. Similarly, when the left control port is closed, the flow is deflected to the left. That is, the flow is alternately deflected to the left and right by opening and closing the control port. Perform a so-called swing motion. Next, a case will be described in which the control board 6 is tilted slightly to the right. In FIG. 7, when both sides of the control port are open, there is no influence of pressure in the control port, so the flow is deflected by the amount bent by the control plate. When the right control port is closed, the flow is largely deflected to the right due to the suction from the control port 3R added to that by the control plate 6. When the left control port 3L is closed, the flow is tilted to the right by the control plate, so negative pressure in the control port 3L is less likely to occur, and therefore the influence of the left control port 3L is eliminated. That is, a swing operation is performed between the deflection angle set by the control plate 6 and the deflection angle that is increased by suction by the negative pressure generated by closing the right control port 3R. In other words, when the control plate 6 is facing forward, it can swing all the way to the left and right, and when the control plate 6 is tilted, the swing operation can be performed within the range of the deflection angle set by the inclination angle of the control plate. . Moreover, if you do not want to make a swinging motion, you can stop the swinging motion at the same blowing angle by rotating the dial 180 degrees. FIG. 5 is an example of application of the present invention, and is an example in which the present invention is applied to a ceiling-suspended heat pump. Outside air passes through a heat exchanger 8 and a fan 9, enters the flow direction control device of the present invention, and is blown out with the blowing direction being arbitrarily changed. The blowing direction can be arbitrarily set by rotating the dial 19. Further, by rotating the dial 9 1800 times, a swing motion can be performed. This swinging motion is particularly effective for cooling. That is, during cooling, it is more comfortable to be exposed to the wind intermittently than to be constantly exposed to the wind, and the swing action allows a wide range of people to be exposed to the wind. Furthermore, in the present invention, the inside of the swing can be changed arbitrarily by rotating the control board 6 with the dial 19, so it is possible to change the inside of the swing depending on the number of people in the room and the distribution state. It also has a great effect on the living environment. As described above, the flow direction control device of the present invention uses a control plate to control the upstream flow so that the upstream flow hits the guide wall and adheres to the guide wall, so it is compared to the negative pressure control method. This makes it possible to reduce the size of the guide wall, which is advantageous in terms of space and cost, and because the control board itself has a rectifying effect, there is no need for a rectifying filter, and the blowing direction can be controlled with a single dial operation. It can be selected arbitrarily, and the swing operation can be performed by opening and closing the control port in any direction, and the swing operation can be performed by opening and closing the closing plate with a small amount of force. The swing motion can be performed even in areas with no electricity and only wind, and when applied to the air outlet of air conditioners, switching the blow direction and swing motion can be done with a single dial operation. In addition to being able to change the swing range arbitrarily depending on the number and distribution of people in the air-conditioned room, it can be used in a small amount of space, and even when only the wind is blowing out, such as from a duct outlet. This has the great effect of making it possible to perform swing motions and other motions in the same way.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a flow direction control device using a conventional negative pressure control method, FIGS. 2 and 3 are cross-sectional views of a flow direction control device according to an embodiment of the present invention, and FIG. 4 is the same. FIG. 5 is an exploded perspective view of the flow direction control device, FIG. 5 is a sectional view showing application to a wall-mounted heat pump, and FIGS. 6 and 7 are cross sectional views showing the operating state of the flow direction control device. 1... Body of flow direction control device, 2... Nozzle, 3
R, 3L... Control port, 4R, 4L... Control port closing plate, 5
R, 5L... Guide wall, 6... Control board, 7... Axis,
10...Windmill, 16...Cam, 19...Dial. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] 1. One nozzle having a restriction in the flow direction;
a control port that is provided downstream of the nozzle and adjacent to the nozzle and communicates with the atmosphere, an upstream end of which is located upstream of the nozzle, and a downstream end of which is located upstream of the downstream end of the control port; a control plate that rotates around an axis to control the streamline state of the fluid arranged as shown in FIG. A flow direction control device in which a guide wall is arranged so that the flow follows the guide wall by changing the flow direction at the outlet, and the control port can be opened and closed. 2. The flow direction control device according to claim 1, wherein means for rotating the control plate and means for opening and closing the control port are provided in communication with each other.