JPH0670519B2 - Wind deflector for air conditioner - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind direction deflector installed in an air conditioner (hereinafter referred to as an air conditioner) inside a blowout port to guide blown air in an arbitrary vertical direction. .

Conventional configuration and its problems Conventionally, for example, in a ceiling-hung air conditioner, a cold airflow during cooling is horizontally blown and a warm airflow during heating is provided with a wind direction deflecting device for downward blowing, It has the structure shown in FIG. 4 and FIG. That is, in this figure, 1 indicates an air conditioner main body, and an air outlet 2 is formed on the front surface. Inside the air outlet 2, a fluid guide plate 3 having a curved surface on the lower side and a horizontal control plate 4 rotatable above the fluid guide plate 3
Further, by providing the projecting bias portion 5 above this, a vertical wind direction deflecting device is formed.

The operation of the vertical wind direction deflecting device configured as described above will be described below.

First, in the case of downward blowing, as shown in FIG. 4, when the horizontal control plate 4 is rotated so that the downstream side faces downward, the jet flow A below the horizontal control plate 4 is against the wall surface of the fluid guide plate 3. , The jet flow B above the horizontal control plate 4 is pushed downward by the back pressure C from the bias portion 5 and is attracted to the jet flow A to be jetted by the jet flow D. As a result, as shown in FIG. 5,
By rotating the horizontal control plate 4 so that the downstream side is slightly upward, the jet A below the horizontal control plate 4 is separated from the fluid guide plate 3 and is blown out in the horizontal direction and above the horizontal control plate 4. The jet B of B is pushed downward by the back pressure C from the bias portion 5, but is pushed back horizontally by the horizontal control plate 4, merges with the jet A, and jet D '
Is to be blown out horizontally. However, in the above-described configuration, the particles are attached to the wall surface of the fluid guide plate 3 due to the Coanda effect, especially when deflected downward.
When downward deflection is performed at a wider angle, it is necessary to narrow the width of the air outlet and increase the air velocity of the air outlet.Therefore, as the static pressure inside the machine increases, the pressure loss generally increases. Since the amount of blown air tends to decrease, the fan rotation speed must be increased and the motor output must be increased, which has the drawbacks of low noise and energy saving.

SUMMARY OF THE INVENTION In view of the above drawbacks, the present invention provides a wind direction deflecting device that eliminates a decrease in the air flow rate even when deflecting downward at a wide angle without impairing the effect at the time of horizontal blowing, and allows more efficient downward blowing. Is.

In order to achieve this object, the wind direction deflecting device of the present invention has a fluid guide wall provided on the lower side of the air conditioner outlet having a curved surface that inclines downward toward the downstream side, and an air flow. A horizontal control plate that has a rotation axis that is vertical and horizontal to the direction, and is rotatably supported at a substantially central portion in the air outlet, and is inclined downstream toward the downstream side of the fluid guide wall. A fluid guide plate having a curved surface, an auxiliary outlet formed by the fluid guide wall and the fluid guide plate, and a rotation shaft near the upstream end of the fluid guide plate for rotation of the horizontal control plate. And a damper that opens the auxiliary outlet when the horizontal control plate rotates downward.

In the above configuration, the horizontal control plate is rotated in a substantially horizontal direction at the time of horizontal blowing. At this time, the damper closes the auxiliary outlet in conjunction with the rotation of the horizontal control plate, the jet above the horizontal control plate is blown out in the horizontal direction, and the jet below the horizontal control plate comes from the curved surface of the fluid guide plate. The haze is separated from the horizontal control plate and merges with the jet flow above the horizontal control plate to be ejected in the horizontal direction.

In addition, during downward blowing, the horizontal control plate is rotated downward. At this time, the damper opens the auxiliary outlet in conjunction with the rotation of the horizontal control plate, and the jet below the horizontal control plate adheres to the curved surface of the fluid guide plate due to the Coanda effect and deflects downward.
The jet flow above the horizontal control plate is attracted by the jet flow below the horizontal control plate, merges, is deflected downward, and is jetted. Further, the jet below the damper is deflected downward by the fluid guide plate, and is attached to the curved surface of the fluid guide wall by the Coanda effect and deflected downward so that the jet flows above the fluid guide plate. By attracting the jet, there is little pressure loss as a whole, and a downwardly deflected blow-out at a wide angle is obtained.

Description of Embodiments One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a ceiling-hung air conditioner according to an embodiment of the present invention. Reference numeral 10 denotes an air conditioner main body, and the inside of the main body 10 is partitioned by a partition plate 11 into a blower chamber 12 and a heat exchange chamber 13. The blower chamber 12 is provided with a suction port 14, a fan casing 15 having a white fan (not shown) installed therein, and a motor 16 for driving the fan. Inside the heat exchange chamber 13, a heat exchanger 18 supported by a side plate 17 (an opposite side plate is not shown) and a drain pan 19 are provided under the heat exchanger 18. An air outlet 20 having a wind direction deflecting device is formed on the front surface of the main body 10. An upper portion of the outlet 20 is composed of a top plate 21 whose tip is bent in a U shape, a cross-section member 22 attached to the inner surface thereof, and a bias portion 23 fixed to a wall surface of the U shape portion. Both ends are pivotally supported by side plates 17 (the other side is not shown) to be substantially rotatable in the substantially central portion of the blowout port 20 and have a plate-like shape having a rotation axis vertical and horizontal to the air flow direction. A horizontal control plate 24 is provided. A fluid guide plate 25, which has a curved surface that is inclined downward toward the downstream side and has an arcuate longitudinal section, is attached to a side plate 17 (the opposite side is not shown) at the lower part of the outlet 20. At the upstream end of the fluid guide plate 25, there is provided a support shaft 26 serving as a rotation shaft and a damper 27 rotatably supported. A bottom plate 28 on which a drain pan 19 made of a heat insulating material is placed is provided in the lower part of the heat exchanger 18, and a fluid guide wall 29 having a curved surface inclined downward as it goes downstream is provided on the downstream side of the drain pan 19. The fluid guide wall 29 and the fluid guide plate 25 form an auxiliary outlet 30. Further, the damper 27 is configured to be able to open and close the auxiliary air outlet 30, and when the auxiliary air outlet 30 is closed, the tip of the damper 27 contacts the apex of the fluid guide wall 29. The horizontal control plate 24 and the damper 27 are interlocked with each other, and when the horizontal control plate 24 rotates downward, the damper 27 opens, and when the horizontal control plate 24 rotates horizontally, the damper 27 closes.

The operation of this configuration will be described below. Suction port 14
The air sucked from the blower chamber 12 through the heat exchanger 18 passes through the heat exchanger 18, and the air-conditioning flow that has been heat-exchanged and sent to the air outlet 20 flows into the wind direction deflecting device. In the case of horizontal blowing, as shown in FIG. 2, when the horizontal control plate 24 is turned horizontally, the damper 27 that interlocks closes the auxiliary outlet 30 and the jet E above the horizontal control plate 24 is blown in the horizontal direction. And horizontal control plate
The jet F below 24 is blown out horizontally from the curved surface of the fluid guide plate 25, and is jetted in the horizontal direction as it joins with the jet E and is jetted horizontally as the jet G.

In the case of downward blowing, as shown in FIG. 3, when the horizontal control plate 24 is turned downward, the interlocking damper 27 is opened and the auxiliary outlet 30 is opened, and the jet H below the horizontal control plate 24 is opened.
Is deflected downward by being adhered to the wall surface of the curved surface 31 of the fluid guide plate 25 by the Coanda effect, and the jet i above the horizontal control plate 24 is pushed downward by the back pressure J by the bias portion 23. At the same time, it is attracted by the jet H and merges as a jet K to be deflected downward and blown out. Further, the jet L discharged from the opened auxiliary outlet 30
First, the damper 27 guides the flow below the damper 27 to the auxiliary outlet 30, and the back pressure M due to the fluid guide plate 25 having a curved longitudinal section with a curved surface that inclines downward toward the downstream side.
And is deflected downward by the Coanda effect and adheres to the curved surface of the fluid guide wall 29 by the Coanda effect to deflect downward and exits the auxiliary outlet 30 to attract the jet K and join it to form a jet N downward at a wide angle. It is deflected to and is blown out.

As described above, according to the present embodiment, the fluid guide wall 29 provided on the lower side of the air outlet 20 of the air conditioner having a curved surface that inclines downward toward the downstream side, and is vertical and horizontal to the air flow direction. A horizontal control plate 24 that has a different rotation axis and is rotatably supported at a substantially central portion in the air outlet 20, and a curved surface that is provided downstream of the fluid guide wall 29 and inclines downward toward the downstream side. A fluid guide plate 25, an auxiliary air outlet 30 formed by the fluid guide wall 29 and the fluid guide plate 25, and a rotation shaft near the upstream end of the fluid guide plate 25 are interlocked with the rotation of the horizontal control plate 24. Since the horizontal control plate 24 is provided with the damper 27 that opens the auxiliary air outlet 30 when rotating downward, the horizontal air outlet can be horizontally blown out in the same manner as in the conventional case, and the auxiliary air outlet 30 can be blown down when the horizontal air blowout is performed. In combination, the pressure loss is small as a whole, and a blowout blown downward at a wide angle can be obtained.

EFFECTS OF THE INVENTION As is clear from the above description, according to the present invention, a fluid guide wall that has a curved surface that inclines downward toward the downstream side and that is provided below the outlet of an air conditioner, and is perpendicular to the air flow direction. And a horizontal control plate that has a horizontal rotation axis and is rotatably supported at a substantially central portion in the air outlet, and a curved surface that is provided downstream of the fluid guide wall and that slopes downward toward the downstream side. A fluid guide plate, an auxiliary air outlet constituted by the fluid guide wall and the fluid guide plate, and a rotation shaft near an upstream end of the fluid guide plate, which interlocks with the rotation of the horizontal control plate. By providing a damper that opens the auxiliary air outlet when the horizontal control plate rotates downward, as in the conventional case, when the horizontal control is performed, the damper is opened, and when the downward deflection is performed, the damper is opened and the auxiliary air outlet is opened to effectively provide the coanda. The effect is obtained, and the jet flow is spread smoothly and effectively. Since it can be deflected to an angle, obstacles in the air passage are reduced, noise can be reduced for a fan at a low rotation speed, and a motor with a small output can be used,
It can contribute to energy saving, and its practical effect is great.

[Brief description of drawings]

FIG. 1 is a central sectional view of an air conditioner equipped with a wind direction deflecting device according to an embodiment of the present invention, and FIG. 2 is an enlarged view of a blowout port showing a flow of wind in horizontal blowing in FIG. FIG. 4 is an enlarged view of the air outlet showing the flow of air in the downward deflection in FIG. 1, FIG. 4 is a downward deflection view of a conventional air conditioner, and FIG. 5 is a horizontal outlet view of FIG. 20 ... Blowout port, 24 ... Horizontal control plate, 25 ... Fluid guide plate,
27 …… Damper, 29 …… Fluid guide wall, 30 …… Auxiliary air outlet.

Claims (1)

[Claims] 1. A fluid guide wall, which has a curved surface that inclines downward toward the downstream side and is provided below the air outlet of an air conditioner,
A horizontal control plate that has a rotation axis that is vertical and horizontal to the air flow direction, and is rotatably supported at a substantially central portion in the air outlet, and is provided downstream of the fluid guide wall and extends toward the downstream. A fluid guide plate having a curved surface that inclines downward, an auxiliary outlet formed by the fluid guide wall and the fluid guide plate,
An air conditioner including a damper having a rotation shaft near the upstream end of the fluid guide plate and interlocking with the rotation of the horizontal control plate to open the auxiliary air outlet when the horizontal control plate rotates downward. Wind deflector.