JPS59142345A - Flow direction controlling device - Google Patents

Abstract

PURPOSE:To improve pleasantness at the time of air conditioning by a method wherein the flow of air is deviated sharply without substantially changing the quantity of blown out air and the action of forming a tributary flow of air is made possible without substantially changing the quantity of air by making an air flow control blade have a specific configuration. CONSTITUTION:The air flow control blade 6 rotatable about a shaft 60 is formed of surfaces 7 and 8 for performing a biasing action and a curved section 9. (for exampe, the surface 7 is called a biasing action surface and the surface 8 is called a tributary action surface hereinafter). Further, the connected section 10 of the biasing action surface 7 and the curved section 9 is formed substantially in the shape of a circular arc. In addition, the biasing action surface 7 and the tributary action surface 8 are provided with projections 70 and 80, respectively, with which the actions of the surfaces 7 and 8 are promoted. With the above structure, a flow F of air from the upstream side branches into an upper flow Fa and alower flow Fb at the control blade 6 and in this case, since the connecting section 10 is substantially in the shape of a circular arc, the division of the flow F is made smoothly without being disturbed.

Description

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

Conventional configuration and its problems In air conditioners that perform cooling and heating, the direction of air flow is controlled to blow downward during heating and horizontally during cooling, in order to equalize the temperature distribution in the room being air-conditioned. This is desirable.

Furthermore, if a large amount of hot air is blown downward during heating, the amount of hot air may be too large and may cause discomfort when it hits the human body. If the purpose is to keep the temperature distribution constant,
Experiments have confirmed that a nearly constant temperature distribution can be obtained by blowing out a certain amount downward and the rest horizontally. Therefore, in order to improve the temperature distribution and eliminate the discomfort caused by the hot air being blown out, it is necessary to have a function of blowing out a certain amount of hot air downwardly and the rest of the air blowing horizontally, that is, a function of dividing the flow.

As a conventional example that fails to achieve this purpose, JP-A-54-9
There is a publication No. 4492. In this method, as shown in FIG. 1, a wide-angle deflection/diversion operation is performed by rotating a single blade, but there is a problem in that a large air flow resistance occurs during the diversion operation.

OBJECT OF THE INVENTION The present invention solves the problems of the prior art.It is an object of the present invention to significantly deflect the flow with almost no change in the volume of blown air, and to make the flow control blades have a special shape so that the volume of air can be hardly changed. The purpose is to enable flow diversion and improve comfort during air conditioning.

Structure of the Invention In order to achieve this object, the present invention provides a curved guide wall or a curved guide wall including a partially straight line on one side of the outlet of the blowing passage, and a curved guide wall including a partially straight line on the side opposite to said side. means for directing the flow inward, downstream thereof a substantially straight wall, and flow control vanes rotatable about an axis;
The flow control vane is composed of two surfaces having a biasing action and a curved portion, and a protruding portion is formed on each of the two surfaces to promote the respective actions. With this configuration, the flow efficiently adheres to the guide wall and the linear wall in accordance with the rotation of the flow control vanes, thereby performing wide-angle deflection and flow dividing operations.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 2 to 5.

In Figures 2 to 4, 1 is a primary outlet passage, 2 is an outlet section, 3 is a curved guide wall (as shown in the figure, a part of the downstream side of the curve may include a straight line), and 4 is a guide wall. A means (hereinafter referred to as a bias protrusion for simplicity) provided on the wall opposite to the guide wall 3 to direct the flow inward (toward the guide wall); 5 is a linear wall provided downstream of the bias protrusion 4; , 6 is the axis 60
It is a flow control vane which can be rotated around the center and is formed by surfaces 7 and 8 having a positive biasing effect and a curved part 9. (For simplicity, the 7th surface is the bias action surface and the 80th surface is the shunt action surface.) Further, the connecting portion 10 between the bias acting surface 7 and the curved portion 9 is formed in a substantially arc shape. Moreover, the biasing surface 7 and the diversion surface 8 are provided with protrusions 7o and 8o for promoting their respective effects.

FIG. 5 shows a diagram in which the above-described embodiment is applied to a ceiling-mounted heat pump air conditioner. 11 is the air conditioner main unit, 12 is the 70 nokofuan, 13 is the heat exchanger,
14 is a heater, 15 is an inclined top plate for narrowing the air outlet, 1
6 (I'i is the lower aperture.

In the above configuration, the blowing direction of the blowing flow is controlled according to the rotation of the flow control blade 6 as shown in FIGS. 2 to 4. Fig. 2 shows the state of horizontal blowing, Fig. 3 shows the state of downward blowing, and Fig. 4 shows the state during diversion operation.

First, the horizontal blowing state shown in FIG. 2 will be explained. In this case, the flow control vanes 6 are set in a horizontal position. (The position of the flow control vane 6 in Fig. 2 is assumed to be the horizontal position.)
At the flow control blade 6, the flow F from upstream is divided into an upper flow Fa and a lower flow Fb in the figure. At this time, since the connecting portion 1o has a substantially arc shape, the flow is smoothly divided without being disturbed. Fa flows along the curved portion 9Vc due to the flow Fc due to the action of the bias protrusion 4, and Fb flows along the bias acting portion 7. Curved part 9
The flow Fa along vc interferes with the straight wall 5 because it is nearby, and flows along the straight wall 5.

On the other hand, the lower flow Fb flows toward the bias action surface 7 (e), but it merges with the upper flow Fa and the entire flow flows approximately horizontally. In this case, the flow control vanes are in contact with water.
It has rotated about 60 times counterclockwise in the figure from the top-blowing state. In this case, the flow F is divided into a flow Fa on the side of the flow control blade 6 and a flow Fb on the lower side, as in the case of horizontal blowing. The upper flow Fa is directed downward by the flow Fc caused by the bias protrusion 4 and adheres to the curved portion 9 of the flow control vane 6.

On the other hand, the lower flow Fb is directed downward by the bias action surface 7 and adheres to the guide wall 3 due to the Coanda effect. Since the upper flow Fa flows along the curved surface portion 9 of the flow control vane 6, it easily merges with the lower flow Fb.
The entire flow adheres to the guide wall 3 and is deflected downward and blown out. Moreover, the effect of the protrusion To provided on the bias action surface 7 further promotes the adhesion of the lower flow Fb to the guide wall 3, and the effect of the protrusion 8o provided on the diversion action part 8o. This promotes the effect of the upper flow Fa adhering to the curved portion 9, thereby increasing the downward deflection angle. As a result, since the adhesion effect of the flow to the wall surface is effectively used, the rate of decrease in air volume is 10% lower than in the case of horizontal blowing.
%, a downward blow deflection of about 86° is possible.

Next, the state of the flow dividing operation as shown in FIG. 4 will be explained. In this case, the flow control vanes 6 have been rotated approximately 120' clockwise from the horizontal blow setting state.

In this case, the flow F is divided into a flow Fa above the flow control blade 6 and a flow Fb below the flow control blade 6, as before. Upper flow ya
is directed in the direction of adhering to the straight wall 5 by the action of the bias action surface 7, efficiently adheres to the straight wall 6, and blows out in the horizontal direction as it is. The lower flow Fb is directed in the direction of adhering to the guide wall 3 by the action of the flow dividing surface 8, efficiently adhering to the guide wall 3, and blowing out downward as it is.

As a result, the flow is split horizontally and downwardly. Furthermore, the effect of the protruding portion 8o provided with the flow diversion action portion svC further promotes the adhesion effect to the guide wall 3, and ensures the diversion operation even when there is turbulence in the upstream flow.

As a result of the above, as in the case of downward blowing, the diversion operation becomes possible when the rate of decrease in air volume is within 10% compared to the case of horizontal blowing. When the flow direction control device that performs the above action is applied to a ceiling-mounted heat pump air conditioner as shown in FIG. 6, the flow sent by the sirocco fan is heated while passing through the heat exchanger 13 and heater 14. Alternatively, it is cooled and enters the blowout passage 1 of the flow control device.

This flow is blown out by being vertically deflected or divided by the above-mentioned action. As a result, the most comfortable blowout control can be achieved by changing the blowout pattern horizontally when the flow is cold air, downward when the flow is warm air with a small air volume, and divided into separate flows when the flow is warm air with a large air volume. It becomes possible.

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

0) By configuring the flow control vane from two surfaces with a bias effect and a curved surface part, the adhesion effect of the flow to the curved part and the bias effect of the two surfaces with a bias effect make it possible to control the guide wall and the straight line. By effectively utilizing the adhesion to the wall to deflect the flow, wide-angle deflection and diversion operations can be performed with almost no reduction in air volume.

(2) By providing a protrusion that promotes the direction action on the two biasing surfaces of the flow control vane, the deflection of the downward blow is promoted and operation is performed reliably even when the flow is turbulent. becomes possible.

(3) Since the cross-sectional shape of the flow control vane is approximately axially symmetrical and compact, the rotational torque of the shaft can be small, resulting in improved controllability.

(4) Since the flow control blade has a cross-sectional shape with little deflection, uniform control is possible over a long width.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a conventional flow direction control device, and FIGS. 2 to 4 are cross-sectional views of an embodiment of the flow direction control device of the present invention.
FIG. 6 is a sectional view when the present invention is applied to a ceiling-mounted heat pump air conditioner. 1...Blowout passage, 2...Outlet section, 3.
...Guiding wall, 4...Means for directing the flow inward (
bias protrusion), 5... straight wall, 6... flow control vane, 7, 8... two surfaces having bias action,
9... Curved part, 60... Axis, 70.80...
・Protrusion.

Claims (1)

[Scope of Claims] 0) A curved guide wall or a curved guide wall including a partially straight line is provided on one surface of the outlet of the blowing passage, and means for directing the flow inward on the side opposite to said surface. and a substantially straight wall downstream thereof, and a flow control vane rotatable about an axis, the flow control vane consisting of two surfaces having a bias action and a curved surface part, One side is
When setting the split flow, it acts to direct the flow in two directions, and in other cases, it is formed so that it acts to direct the flow in a single direction in cooperation with the curved part, and the two surfaces have respective directing effects. A flow direction control device formed with a promoting protrusion. (2) Flow direction control according to claim 1, wherein at least a portion located on the upstream side of the joint between the two surfaces having a biasing action of the flow control vane and the curved surface portion is formed into a substantially circular arc shape. Device.