JPS61195236A - Flow direction control device - Google Patents

Abstract

PURPOSE:To make a flow blow off in an arbitrary direction or disperse uniform ly in all directions and simultaneously reduce noises due to the turbulent flow developed by obtaining a bias flow in the flow with a shunt and a stationary vane provided in the flow passage and converging the flow by changing the vane position of a control vane. CONSTITUTION:The outer wall 6 of a flow passage guides the flow sent form a blower and sends it to an enlarged nozzle 5 provided at the end section of the wall 6. The enlarged nozzle 5 is constituted with a blow-off opening 7 that has a inner diameter smaller than the outer diameter of the outer wall 6 and a guide wall 8 that opens to the downstream with a shape that gradually becomes larger to the downstream. On the upstream side of the enlarged nozzle 5 a shunt 9 is provided that disperses the flow outwards relative to the central axis of the flow passage. A stationary vane 12 is provided in the flow passage between the upstream-side end face 10 of the enlarged nozzle and the bottom face 11 of the shunt 9, and a control cane 13 is provided on the downstream side of the stationary vane to change the air direction by changing its deflection angle.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is provided at the outlet of an air conditioner, etc., and allows the flow from the air source to be deflected in any direction or evenly distributed in the surrounding direction. This invention relates to a flow direction control device for a tank.

BACKGROUND OF THE INVENTION It is desirable for air conditioning equipment that performs cooling and heating to be able to freely control the temperature distribution of the room being air-conditioned according to the user's wishes. In other words, for comfort, the blowing direction of air conditioning equipment is
In general, it is better to uniformize the temperature distribution in the air-conditioned room by dispersing warm air downwards during heating and upwards during cooling.

In addition, as with zone heating and cooling, which has recently been requested by customers, the installation location of air conditioning equipment has been adjusted to allow for spot air conditioning of only a portion of the space in the room where people live, taking economic efficiency into consideration. It is desirable to be able to deflect the airflow over a wide angle without being restricted, and also be able to perform concentrated ventilation.

In order to achieve this objective, an air blow control mechanism as shown in a front sectional view in FIG. 12 and in a side sectional view in FIG. 13 has been devised and used.

In both figures, 1 is a guide wall, 2 is a nozzle that blows out cold and hot air,
3 is a deflection plate rotated by a shaft 4;

Due to the deflection action of the blowing air by the deflection plate 3, the flow coming out of the nozzle adheres to the guide wall and is deflected.

When the deflection plate 3 is rotated, the guide wall 1 to which the flow adheres rotates, and the direction of the blowing air changes.

The problem that the invention aims to solve is to deflect the flow by an operation that exceeds the problem that the invention aims to solve. This has the drawback of high ventilation resistance and the fact that the deflection angle cannot be set large because the deflection occurs at a position where the wind velocity is high. Moreover, when the angle of the deflection plate 4 is increased in an attempt to increase the deflection angle, ventilation resistance increases and, at the same time, a large turbulent vortex region is generated downstream of the deflection plate 3, causing turbulence noise. .

The present invention was made by focusing on such conventional problems,
Without increasing ventilation resistance or disturbing the streamlines, the flow holes can be freely deflected over a wide range of vertical and horizontal directions to suit the purpose, and concentrated spot ventilation can be performed, or evenly and widely in a spherical shape over a wide area. It is an object of the present invention to provide a flow direction control device that can diffuse and blow air.

Means for Solving the Problems In order to achieve this object, the present invention provides a flow divider that is provided at the outlet end of a channel in a pipe and disperses the flow from the central axis of the channel toward the outer wall of the channel; an expanding nozzle that is provided near the downstream side of the flow divider, has a blower outlet smaller than the outer diameter of the flow divider, and is separated by a guide wall that gradually expands downstream from the blower outlet; Provided between the expansion nozzle and the bottom surface of the flow divider, the flow divider rectifies the flow dispersed on the outer wall of the flow path toward the outlet again into a flow directed toward the center, and expands the flow divider. On the upstream end face 1 of the nozzle, a stationary blade is arranged in a cylindrical shape along the flow to support and fix it, and a stationary blade is provided between the downstream side of the stationary blade and the air outlet to deflect the direction of the flow or to change the direction of the flow. The groove bottom is a flow direction control device consisting of a control vane that controls the flow by blocking part of it.

Due to the groove bottom, the flow flowing out to the outlet end of the pipe internal flow path is diverted around the pipe internal flow path by the flow divider, and immediately after that, the flow is sandwiched between the bottom of the flow divider, the enlarged nozzle, and the flow end surface. It is again directed toward the center by the drip flow path and discharged to the outside world through the enlarged nozzle outlet. At this time, the turbulence of the flow from upstream is rectified by a stationary vane provided between the flow divider and the expanding nozzle, and the flow is further controlled by a control vane provided downstream adjacent to the stationary vane. .

That is, a bias flow directed toward the center is generated by the flow path consisting of the bottom surface of the flow divider and the upstream end surface of the enlarged nozzle, and the flow collected in the center portion is connected to the enlarged nozzle outlet because the total pressure of the bias flow is balanced. It is discharged vertically to the bottom of the flow divider. At this time, when a part of the control vane is tilted, part of the bias flow flowing through that area is blocked,
Therefore, the circumferential total pressure distribution at the outlet becomes unbalanced.

As a result, the bias flow from the surroundings acts by the total pressure difference near the outlet of the enlarged nozzle guide wall near the area blocked by the control vane, and the flow blown out from the enlarged nozzle outlet flows over the enlarged nozzle guide wall. This causes a flow sticking phenomenon due to the Coanda effect, which causes the flow to be largely deflected in the direction of the moving control blade.

Furthermore, by changing the angle of the control vanes, the gap between the tips of the control vanes changes, and the strength of the flow adhesion to the guide wall changes.

As a result, the blowing direction of the blowing flow can be controlled three-dimensionally in all directions according to the deflection angle of the control blade and the deflection position of the blade.

Furthermore, by slightly tilting all the control vanes in the same direction, it is possible to blow out a flow that is uniformly distributed over the entire circumference.

In a flow direction control device having such a groove bottom, the control vanes are located outside the nozzle on the ball flow side of the expanding nozzle where the flow velocity is not very high, so they do not create resistance to the flow and are provided with stationary vanes. It does not disturb the flow. Therefore, the effect of completely adhering the flow onto the guide wall without reducing the air volume and deflecting the flow over a wide angle is achieved. Furthermore, due to the action of the flow divider, the flow is dispersed on the outer wall of the flow path, promoting the throttling effect in the flow path between the upstream end surface of the enlarged nozzle and the bottom surface of the flow divider, expanding the deflection angle, and reducing the flow in the flow path. Even if there is turbulence or bias, the flow is rectified by the stationary blades, and the deflection characteristics are less likely to deteriorate.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 to 11.

In the figure, reference numeral 5 denotes an enlarged nozzle provided at the end of the outer wall 6 of the flow path that guides the flow sent from a blower (not shown), and has an inner diameter smaller than the outer diameter of the outer wall 6 of the flow path. A groove is formed by a lower part and a guide wall 8 which has a gradually enlarged shape and spreads toward the downstream side from the blowing part lower part. A flow divider 9 is provided on the flow side of the enlarged nozzle 5 to disperse the flow in the outer wall 6 of the flow path outward with respect to the central axis of the flow path.
The upstream end face 10 of the enlarged nozzle/I15 and the flow divider-9
The bias flow flowing toward the center is collected again by the throttling action of the channel formed with the bottom surface 11 of the tube, and the tube is arranged in a cylindrical shape parallel to the flow direction so as to rectify the flow. The flow divider 9 is fixed on the upstream end face 10 of the enlarged nozzle by stationary vanes 12 . Further, within the flow path formed by the enlarged nozzle upstream end face 10 and the flow divider bottom face 11, control vanes 13 are provided adjacent to the downstream side of the stationary vanes 12, and are interlocked with each other, or It is possible to drive and control the deflection angle independently.

The operation of the groove formation described above will be explained using FIGS. 2 to 11.

First, a case will be described in which the tips of the control blades 13 are in contact with each other at an angle α as shown in the figure.

In this case, as shown in FIG. 2 as a side view, and as shown in FIG. 3 as a side view, the flow Fl that has entered the flow channel is
0 action results in an outward flow FQ. As a result, the flow collides with the flow path outer wall 6, and the enlarged nozzle upstream end face 10
The flow follows along the bottom surface 11 of the conical flow divider, and becomes a bias flow FB directed toward the axis of the flow path due to the action of the throttle. Here, a bias flow also occurs on the right side of the figure, but the bias flow FB is blocked by the shielding effect of the control blade 13. Therefore, the flow F coming out from the blowout lower of the enlarged nozzle 5
A is the guide wall 8 on the right side for the bias flow FB from the left side.
is directed in the direction of

As a result, the flow FA coming out of the enlarged nozzle 5 interferes with the guide wall 8, flows along the surface of the guide wall 8 due to the Coanda effect, and is deflected at a wide angle by θ without substantially reducing the air volume. In this case, the maximum deflection angle θ can be arbitrarily set depending on the shape of the guide wall 8.

Next, as shown in FIGS. 4 and 5, when the left side part of the control blade 13 is tilted at an angle α and its tips are brought into contact, the bias flow FB shown in the left figure is blocked and the enlarged nozzle V5
The flow FA coming out of the blowout lower is inclined to the left and is deflected at a wide angle to the left along the left guide wall 8.

That is, depending on the shielding position due to the inclination of the control blades 13, the flow is deflected over a wide angle in the direction of the shielding position. Furthermore, the flow α' upstream of the flow F□ is all the same as in FIGS. 2 and 3, so the following description will be omitted.

Next, as shown in FIGS. 6 and 7, the control blade 13 is
Regarding the inclination, a case where a gap d is provided at the tip will be explained.

In this case, a flow FBL passing through the gap d occurs,
Due to this action, the flow F coming out from the blowing lower of the expanding nozzle 5
The tilting force of A becomes smaller. As a result, the degree of adhesion to the guide wall 8 is also reduced, and the deflection angle θ is also smaller than that in FIG. Then, as the angle α' of the control blade 13 is decreased so as to gradually enlarge this gap d, the deflection angle 0 gradually becomes smaller, and eventually the deflection angle becomes as shown in FIGS. 8 and 9. Angle 0 becomes 0.

That is, by changing the inclination α' of the control blade 13, the deflection angle can be arbitrarily set.

In addition, as shown in FIGS. 10 and 11, the control blade 13
A case will be explained in which the angle β is uniformly tilted in the same direction.

In this case, the blowout flow becomes a swirling flow when it passes through the control blade 13, and therefore the angle of inflow into the guide wall 8 due to the swirling flow becomes smaller than in the conventional case, so that the blowout flow extends over the entire circumference of the blowout lower. The effect is more likely to occur, and the liquid adheres to the guide wall 8 and flows. As a result, the flow FA coming out of the enlarged nozzle 5 flows in a distributed manner over the entire circumferential direction.

As described above, the flow direction control device according to the present invention converges the flow and deflects it in any direction and at any angle by changing the deflection angle of the control vane and the position of the deflecting vane. It can be used to blow out air by dispersing the flow evenly in all directions, and to switch between the two in an instant. Furthermore, it exhibits flow adhesion on the upstream side of the blowout flow, and deflection can be obtained over a wide angle and over a wide range. Furthermore, due to the action of the flow divider and stationary vanes, the flow that passes through the center of the flow path becomes a bias flow, so that adhesion to the guide wall is performed reliably, and the stationary vanes absorb turbulence in the flow upstream. Therefore, deflection characteristics are improved and turbulence noise is reduced.

When a flow direction control device having the above characteristics is applied to an air outlet of an air conditioner, the air flow is deflected over a wide range without reducing the air volume, and a great air conditioning effect can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the flow direction control device of the present invention, FIGS. 2 to 11 are explanatory diagrams showing different blow direction control operations in FIG. 1, and FIGS. 12 and 13 respectively. 2A and 2B are cross-sectional views showing different blowing direction control operations of conventional flow direction control devices, respectively. 5... Enlarged nozzle, 6... Channel outer wall,
7... Air outlet, 8... Guide wall, 9...
...Flow divider, 12...Stationary blade, 13...
...control wing. 7... Suitaguchi 8. Y3 wall Figure 2 ノ2"° static matter 13...
Control motor Figure 4 I2...Stationary wing I3...Example #
Wing 5... Niresono (nos°〉V Fig. 8) 12...Stationary! 13. Φl Plate Fig. 9
5.肱人/Suit Vl・・Not J8 Miku Toy Good 10th Figure 12...# Positive γ 13...System @ Part 51. , Expanding nozzle Fig. 1-2 Fig. 13

Claims (1)

[Claims] A flow divider that is provided at the outlet end of the flow path in the pipe and disperses the flow from the central axis of the flow path toward the outer wall of the flow path; an enlarged nozzle having a blow-off port and a guide wall that gradually expands downstream from the blow-off port; and an enlarged nozzle provided between the enlarged nozzle and the bottom surface of the flow divider; A stationary device that rectifies the flow dispersed on the outer wall of the flow path again toward the outlet into a flow directed toward the center, and supports and fixes the flow divider by arranging it in a cylindrical shape along the flow on the upstream end surface of the enlarged nozzle. A flow direction control device comprising a blade and a control blade that is provided between the downstream side of the stationary blade and the outlet and controls the flow by deflecting the direction of the flow or blocking a part of the flow.