JPH0323821B2 - - 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. be.

Conventional configurations and their problems In air conditioners that perform cooling and heating, the air flow direction 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. Experiments have confirmed that if the purpose is to maintain a constant temperature distribution, an almost constant temperature distribution can be obtained by blowing out a certain amount 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.

As a conventional example to achieve this purpose,
There is a publication No. 54-94492. As shown in FIG. 1, wide-angle deflection and diversion operations are performed by rotating a single blade, but there is a problem in that a large air flow resistance occurs during diversion operations.

Purpose of the invention The present invention solves such conventional problems,
In addition to significantly deflecting the flow with almost no change in the volume of air blown out, the special shape of the flow control vanes enables flow diversion operation with almost no change in the volume of air, improving comfort during air conditioning. The purpose is to

Structure of the Invention In order to achieve this object, the present invention provides a guide wall having a curved shape or a curved shape including a partially straight line on one surface of the outlet part of the blowing passage, and on the side opposite to the said surface. means for directing the flow inward, downstream thereof a substantially straight wall, and flow control vanes rotatable about an axis, said flow control vanes being columnar bodies having a substantially triangular cross-section; and
Two of the three surfaces forming the columnar body are substantially linear and are connected to each other at obtuse angles, and the other surface is substantially curved, forming the substantially linear shape. It has protrusions formed on 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 vane, thereby performing wide-angle deflection and diverting operations.

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

In FIGS. 2 to 4, 1 is a blowout passage;
2 is an outlet part, 3 is a curved guide wall (sometimes a straight line is included on the downstream side of the curve as shown in the figure), and 4 is provided on the wall opposite to the guide wall 3 to direct the flow inside (guidance). 5 is a straight wall provided downstream of the bias projection 4, and 6 is a flow control vane rotatable about an axis 60. , is a columnar body with a substantially triangular cross section, and is formed of substantially linear surfaces 7 and 8 and a curved portion 9 that intersect with each other at an obtuse angle. (For simplicity, the surface 7 is the bias action surface,
8 is used as the diversion 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 70 and 80 for promoting their respective effects.

FIG. 5 shows a case where the above embodiment is applied to a ceiling-mounted heat pump air conditioner. 11
is the air conditioner main body casing, 12 is the Shirotsko fan, 13 is the heat exchanger, 14 is the heater, 15 is the inclined top plate for restricting the air outlet, and 16 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 horizontal blowing, Fig. 3 shows the downward blowing, and Fig. 4 shows the 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 blade 6 in FIG. 2 is assumed to be a 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, joint part 1
0 has a nearly circular arc shape, so the flow separates smoothly without turbulence. Fa flows along the curved portion 9 due to the flow Fc due to the action of the bias protrusion 4, and Fb flows along the bias action surface 7.
The flow Fa along the curved portion 9 interferes with a straight wall because it is nearby, and flows along the straight wall 5.

On the other hand, the lower flow Fb flows along the bias action surface 7, but merges with the upper flow Fa so that the entire flow flows in a substantially horizontal direction. Next, the state of downward blowing as shown in FIG. 3 will be explained. In this case, the flow control vanes have been rotated approximately 60 degrees counterclockwise in the figure from the horizontal blow state. In this case, the flow F
is divided into a flow Fa above the flow control blade 6 and a flow Fb below, 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 biasing surface 7 and adheres to the guide wall 3 due to the Coanda effect. Since the upper flow Fa flows along the curved surface part 9 of the flow control vane 6, it easily merges with the lower flow Fb, and the entire flow is caused to flow downward by adhering to the guide wall 3. It will be deflected to the point where it will blow out. Moreover, the effect of the protrusion 70 provided on the bias action surface 7 further promotes the adhesion effect of the lower flow Fb to the guide wall 3, and the protrusion 8 provided on the diversion action part 80 further promotes the adhesion effect of the lower flow Fb to the guide wall 3.
0, the downward deflection angle becomes larger by promoting the effect of the upper flow Fa adhering to the curved portion 9. As a result, since the adhesion effect of the flow to the wall surface is effectively used, a downward blow deflection of approximately 85° is possible while the rate of decrease in air volume is within 10% compared to the case of horizontal blowing ( According to experiments, the effect of the protrusion 80 in this case is that the deflection angle is increased by about 10° at almost the same air volume reduction rate compared to the case without the protrusion 80.

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. The upper flow Fa 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 5, and is blown out in the horizontal direction as it is. The flow Fb on the lower side is directed in the direction of adhering to the guide wall 3 by the action of the flow dividing surface 8, and is efficiently transferred to the guide wall 3.
It sticks to the surface and blows out in a downward direction.

As a result, the flow is split horizontally and downwardly. Moreover, the effect of the protruding portion 80 provided on the flow diversion action portion 8 further promotes the adhesion effect to the guide wall 3, thereby ensuring 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, diversion operation is possible while the rate of decrease in air volume is within 10% compared to the case of horizontal blowing. Also, according to experiments, the size of the control blade 6 is such that the projected width in the direction of the flow F is in the range of about 20% to 30% of the height of the blowing passage 1 in the horizontal blowing state shown in FIG. In the downward blowing and divided flow conditions shown in FIG. 4, good operation is achieved in the range of about 30% to 40%. 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. 5, the flow sent by the Sirotskov fan is
It is heated or cooled while passing through a heat exchanger 13 and a heater 14, and is heated or cooled while passing through a heat exchanger 13 and a heater 14.
to go into.

FIG. 6 shows a perspective view of the blow-out portion of FIG. 5. 17 is a motor that rotates the control blade 6.
Figure 7 shows this ceiling-mounted heat pump air conditioner 1.
1 is installed in a room 18. As can be seen from FIG. 7, by rotating the flow dividing blade 6 by the motor 17, the flow can be largely deflected from horizontal to downward without changing the air volume, and the flow can be spread throughout the room. Further, by rotating the control blades 6 more than the downward blowing condition, it is possible to obtain a divided flow condition without changing the air volume substantially. That is, the air is blown out by vertically deflecting or dividing the flow by the above-mentioned action. As a result, when the flow is cold, it is horizontal;
The most comfortable blowout control can be achieved by changing the blowout pattern to downward flow when warm air has a small volume of air, and to branch flow when hot air has a large volume of air.

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

(1) By configuring the flow control vane from two surfaces with a bias effect and a curved part, the adhesion effect of the flow to the curved part and the bias effect of the two surfaces with a bias effect can be used to control the guide wall and By effectively utilizing the adhesion to a straight 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 deflection effect on the two biasing surfaces of the flow control vane, it promotes the deflection of the downward blow and ensures reliable operation even when the flow is turbulent. becomes possible.

(3) The cross-sectional shape of the flow control vane is almost axially symmetrical;
Moreover, since it is compact, the rotational torque of the shaft is small and controllability is improved.

(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, Figs. 2 to 4 are cross-sectional views of an embodiment of the flow direction control device of the present invention, and Fig. 5 is a cross-sectional view of an embodiment of the flow direction control device of the present invention. FIG. 6 is a cross-sectional view of an applied case, FIG. 6 is a perspective view of the blowout portion, and FIG. 7 is an explanatory diagram of the blowout air conditioning flow. DESCRIPTION OF SYMBOLS 1...Blowout passage, 2...Outlet part, 3...Guide wall, 4...Means for directing the flow inward (bias protrusion), 5...Straight wall, 6...Flow control vane, 7,
8...Two surfaces having a bias effect, 9...Curved portion, 60...Axle, 70, 80...Protruding portion.

Claims (1)

[Scope of Claims] 1. 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 a means for directing the flow inward is provided on the side opposite to said surface. , a substantially straight wall is provided downstream thereof, and a flow control vane rotatable about an axis is provided, the flow control vane being disposed across a substantially central portion of the outlet portion and having a substantially triangular shape. It is a columnar body with a cross-sectional shape, and two of the three faces forming the columnar body are
Two surfaces are approximately linear and are connected to each other at an obtuse angle, and the other surface is approximately curved to promote orientation of the two approximately linear surfaces. A flow direction control device formed with a protruding portion. 2. Two nearly linear surfaces of the flow control vane and the other 1
2. The flow direction control device according to claim 1, wherein at least a portion located upstream of the connection portion with the two surfaces is formed into a substantially arc shape.