JPS61122447A - Fluid deflecting device - Google Patents

Abstract

PURPOSE:To bring about the Coanda phenomenon and to lengthen the reach of the blown fluid by forming deflecting passages curved in the same direction between the main deflecting blade and the curved wall surface of the outlet and between the main deflecting blade and the auxiliary deflecting blade. CONSTITUTION:A main deflecting blade 24 and an auxiliary deflecting blade 25 which are linked with each other are disposed in a fluid outlet 5 to change the blowing direction of the fluid, and a first deflecting passage 32 is formed between the main deflecting blade 24 and the curved wall surface 31 of the outlet 5. Further, a second deflecting passage 33 is formed between the main deflecting blade 24 and the auxiliary deflecting blade 25. When both the blades 24, 25 are inclined, the Coanda phenomenon is brought about not only in the first deflecting passage 32 but also in the second deflecting passage 33. As a result, the blowing direction of the fluid can greatly be changed relative to the axis of flow without causing the first deflecting passage 32 to be as large as the case in the conventional device. Thereby, a large amount of the fluid can be blown to a larger distance with less noise.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention: Field of the Invention The present invention relates to a fluid deflection device used in an air blowing section of a ceiling-mounted hot air conditioner.

(See) Prior Art] Japanese Patent Publication No. 59-18614 discloses a device that utilizes the under effect to deflect the direction of fluid discharge from a fluid outlet over a wide angle and in any direction.

In this device, a single deflection blade is provided in the fluid outlet to change the blowing direction of the fluid to be blown out, and a convex wall end is formed on one inner wall of the fluid outlet, and the convex wall end and the deflection vane are connected to each other. A deflection-enhancing flow path is formed between them, and an end wall is formed on the other inner wall that is bent at an angle inward with respect to the flow axis.When changing the blowing direction significantly, the deflection angle of the deflection blade is is increased to increase the flow rate of the deflection-promoting flow path, and K is set to promote deflection.

→ Problems to be Solved by the Invention In the conventional device described above, when the deflection-enhancing flow path is made wide, the flow velocity of the blowing fluid flowing through this flow path slows down, making it difficult to flow along the edges of the convex wall [Coanda effect] Since the deflection-enhancing flow path has to be made considerably narrower, fluid resistance increases [and the problem is that the blowout flow rate decreases and the noise increases.

The present invention solves these problems and provides a fluid deflection device that can extend the reach of the blown fluid.

(e) Means for solving the problem The device of the present invention is provided with a main deflection vane and an auxiliary deflection vane that change the blowing direction of the blowing fluid in a fluid blowout port so as to be interlocked with each other.
Deflection flow paths curved in the same direction are formed between the main deflection blade and the curved wall surface of the air outlet, and between the main deflection blade and the auxiliary deflection blade.

((E) Operation When the main deflection vane and the auxiliary deflection vane are tilted to bring the lower end of the main deflection vane on the outlet side closer to the curved wall surface of the outlet, the first deflection flow formed by the main deflection vane and the curved wall surface is particularly The blown fluid with increased flow velocity is blown out from the channel along the curved wall surface, and the fluid blown out from the second deflection channel formed by the main deflection vane and the auxiliary deflection vane is curved by the auxiliary deflection vane. In other words, the air is blown out along the main deflection blade due to the Coanda effect.
The discharged fluid is attracted by the fluid blown out along the curved wall surface due to the "adapter effect" and is blown out in a substantially horizontal direction in a sharp flow with a long reach.

Also, when the main deflection wing and the auxiliary deflection wing are directed downward, the first
The fluid blown out from the second deflection channel is blown out substantially directly downward along the main deflection blade, and the fluid blown out from the second deflection channel is curved by the auxiliary deflection blade and blown out along the main deflection blade. be done.

That is, due to the Coanda effect, the fluid blown out from the second deflection channel along the main deflection blade attracts the fluid blown out from the first deflection channel, forming a sharp flow with a long reach. It is blown out directly downwards.

(F) Embodiment FIG. 1 is a perspective view of a ceiling-embedded air conditioner incorporating the device of the present invention, and FIG. 2 is a longitudinal cross-sectional view of the ceiling-embedded air conditioner showing a state embedded in the ceiling. FIGS. 3(A) and 3(B) are enlarged sectional views showing different states of part A in FIG. 2;
A suction grill (3) is placed in the center, and air outlets (5) (6) T7+(8) with a fluid deflection device (4), which will be described later, are placed on the four sides of the outer periphery.
The exterior casing of the ceiling-embedded air conditioner is composed of the ventilation decorative panel (9) provided with the ventilation panel (9).

a[ is a nozzle port that inhales and guides indoor air from the suction grille (3) through an air filter (111) to a turbo fan (13), 0 is a 7-amp motor attached to the support leg (151) on the nozzle plate α4, is an annular drain pan disposed along the outer periphery of the nozzle opening σα, and aη is a turbo fan (Iz
An annular heat exchanger, a9 (1
1 is a hanging bolt for pushing the unit body (2) into the ceiling space through the ceiling hole 0 of the ceiling board (A) and suspending it from the ceiling beam @.

The aforementioned fluid deflection device (4) is a boomerang-shaped main deflection wing c! 4), a crescent-shaped auxiliary deflection X (25), and a fourth
As shown in the figure, it is composed of a pair of interlocking tools (A) that interlock these two deflection blades, and the interlocking tool (■) has a boomerang-shaped recess (5), a crescent-shaped recess side, and a pair of interlocking tools (A) that straddle these two parts. A connecting part holder and a connecting part holder are integrally formed.

Then, align the pair of left-right symmetrical interlocking joints, the long main deflection wing Q4 and the auxiliary deflection wing of the same length, and place both left and right ends of the main deflection wing (support) into one recess @. The fluid deflection device (4) is assembled by fitting the left and right ends of the 1 auxiliary deflection blade ■ into the other recess @ and fixing them with adhesive, and projects outward from the pair of left and right interlocking tools ■. By rotatably supporting the rotation shaft (to) on both side walls of the air outlet (51 (6), (7), (81)),
, mounted as shown.

With this installation, a curved wall is formed in the same direction between the main deflection vane Q4 and the curved wall surface Gυ of the opposite air outlet (51+63(71(81)) and between the main deflection vane @ and the auxiliary deflection vane (c). A deflection flow path is formed. (F) is a stepped wall surface that smoothly guides the blown fluid to the auxiliary deflection vane (■).

The structure is as described above, and the indoor air sucked into the turbo fan a3 from the suction grille (3) through the nozzle port αα is discharged from the turbo fan α2 in the circumferential direction, and when passing through the heat exchanger αD. It is cooled when cooling, and heated when heating.

Therefore, during cooling operation, as shown in Figure 3, the angle is θ with respect to the flow axis.
! When the lower end (C) of the main deflection blade C24) on the blow-off side approaches the curved wall surface C311 by tilting the main deflection blade C24) at an angle of 50°, the first deflection flow path C33 between the main deflection blade @ and the curved wall surface C31) The outlet flow F, whose flow velocity has increased, is blown out along the curved wall surface 01) due to the Coanda phenomenon, and the outlet flow F.

is bent by the inner wall surface (to) of the main deflection blade Q4 and the blowout flow F
.

is attracted by the Coanda effect. In addition, the blowout flow F flowing through the second deflection flow path (c) between the main deflection blade and the auxiliary deflection blade is caused by the Coanda phenomenon on the curved outer wall surface 6η of the main deflection blade. At the same time, the blowout flow F4 is bent by the auxiliary deflection blade (c) and sucked into the blowout flow F by the Coanda effect. Moreover, the inflow end of the main deflection blade 124 (
(to) the outlet flows F1 and F.

has a larger flow rate than the outlet flows F3 and F4, and becomes the mainstream, and the outlet flow F3, which has sucked the outlet flow F4, is attracted and merges with the outlet flow F1, which is the mainstream, together with the outlet flow F, by the Coanda effect,
The flow becomes the blowout flow F.

Figure 5k) shows the indoor temperature distribution state during this cooling operation, where the airflow F becomes a sharp flow with a long reach and flows almost horizontally along the wall surface of the ceiling panel ■. It can be seen that after being blown out, the cold air gradually descends to the floor surface, cooling the room almost evenly.

Next, during heating operation, as shown in Figure 3 (b), if the main deflection blade (2) is turned downward along with the auxiliary deflection blade (c) so that θ2 is 15 degrees with respect to the flow axis, the main deflection blade (C) A part of the blowout flow F flowing through the first deflection flow path G3 between the curved wall surface C311 is bent by the curved wall surface Gl), and another blowout flow F is of the main deflection blade (goods). It is blown out along the inner wall surface (G) in a substantially downward direction. Moreover, the blowout flow F flowing through the second deflection flow path (toward) is caused by the curved outer wall surface r3 of the main deflection blade @.
? ) is blown out along the Coanda effect due to the Coanda effect, the coprecipitated blowout flow F is not curved within the auxiliary deflection vane and is then sucked into the blowout flow F due to the Coanda effect. Moreover, the blowout flow F is distributed at the inflow end (to) of the main deflection blade (c).

and F, which has a larger flow rate than the outlet flows F6 and F, becomes the mainstream, and the outlet flow F, which is the main stream that sucks the outlet flow F, attracts the outlet streams F and F by the Coanda effect and merges them, The blowout flow is F1°.

Figure 5 (b) shows the indoor temperature distribution state during this heating operation, in which the air outlet flow F1° becomes a sharp flow with a long reach and reaches the floor surface (to), after which warm air It can be seen that the temperature rises gradually due to the draft effect, and the room is heated approximately evenly.

(G) Effects of the Invention According to the present invention, a main deflection vane and an auxiliary deflection vane that change the blowing direction of the fluid to be blown out are provided in the fluid outlet so as to be interlockable, and the main deflection vane and the curved wall surface of the outlet are connected to each other. Since the first deflection flow path is formed between the main deflection blade and the auxiliary deflection blade, and the second deflection flow path is also formed between the main deflection blade and the auxiliary deflection blade, when the two blades are deflected, the first deflection flow path is formed. In addition, since the Coanda effect effectively acts on the second deflection flow path, conventional devices can greatly change the fluid blowout direction with respect to the flow axis without narrowing the first deflection flow path. It is possible to obtain a large amount of air flow with a long reach and low noise.

In addition, when both deflection vanes are oriented in the flow axis direction, the Coanda effect effectively acts in the second deflection flow path, sucking the fluid blown from the first deflection flow path, and creating a sharp blade with a long reach in the flow axis direction. It can be made to blow out in a flow.

Moreover, by making the main deflection vane into a boomerang shape and the auxiliary deflection vane into a crescent shape, the amount of fluid flowing through the first and second deflection channels in the main deflection vane changes, and when both deflection vanes are deflected, The first deflection flow path becomes the main stream, and when oriented in the direction of the flow axis, the second deflection flow path becomes the main flow, so the direction of fluid blowout can be greatly deflected by simply deflecting both deflection blades a small amount.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention. Figure 1 is a perspective view of a ceiling-mounted air conditioner incorporating the device of the present invention, and Figure 2 is a perspective view of a ceiling-mounted air conditioner installed in the ceiling. A vertical cross-sectional view of the harmonizer, FIG. 3 (a) (portion 1 is an enlarged cross-sectional view showing a different state of section A in FIG. 2, FIG. 4 is an exploded perspective view of the main part of the device of the present invention, FIG. 5 ) (Port 1 is an indoor temperature distribution diagram during cooling and heating operation. +51 (61 (71 (81... air outlet, Q4...
Main deflection wing, (5)... Auxiliary deflection wing, Gυ... Curved wall surface, C321(c)... Deflection flow path. Applicant: Sanyo Electric Co., Ltd. and 1 other representative: Patent attorney: Shizuo Sano No. 3 (A) 5 (6,78)

Claims (2)

[Claims] (1) A main deflection vane and an auxiliary deflection vane that change the direction of the blowout fluid are provided in the fluid outlet so as to be interlocked, and between the main deflection vane and the curved wall surface of the outlet, and between the main deflection vane and the auxiliary deflection vane. A fluid deflection device formed by forming deflection flow paths curved in the same direction between the two. (2) The fluid deflection device according to claim 1, wherein the main deflection blade has a boomerang shape and the auxiliary deflection blade has a crescent shape.