JP2000193301A - Wind direction regulator for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce generation of lift attributed to curvature of a deflector and to prevent generation of noise regardless of the rotational angle of the deflector by reducing generation of air supply noise attributed the deflector for regulating the blowing direction of temperature conditioned air into a room from an air conditioner. SOLUTION: A flap 20 for regulating the blowing direction of air in the vertical direction provided at the air outlet 5 of an indoor unit 10 is made thicker on the windward side as compared with other parts. End face of the thick end part 20a is curved almost semicircularly. The thick end part 20a is made continuous to other parts by decreasing the thickness thereof gradually. Each louver 30 for regulating the blowing direction of air in the lateral direction provided on the windward side of the flap 20 is made thicker at the end part on the windward side as compared with other parts. End face of the thick end part 30a is curved almost semicircularly. The thick end part 30a is made continuous to other parts by decreasing the thickness thereof gradually.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind direction adjusting device for an air conditioner, which adjusts a blowing direction of temperature-controlled air by a rotary deflection plate provided at a blow-out port for blowing temperature-controlled air into a room.

[0002]

2. Description of the Related Art In an indoor unit of a separate type air conditioner, an air outlet is provided at a lowermost portion of a front grille over substantially the entire width. The temperature of the conditioned air blown into the room from the outlet is adjusted by two types of deflection plates provided at the outlet. The first deflecting plate is a horizontal flap provided over the entire width of the outlet portion of the outlet, and adjusts the blowing direction in the vertical direction by rotating about a horizontal axis. The second deflecting plate is a plurality of vertically oriented louvers arranged at predetermined intervals in the width direction on the back side of the flap,
Each of them rotates in conjunction with the vertical axis to adjust the blowing direction in the left-right direction.

[0003] Since the flaps and the louvers are located in the airflow of the blown air, the wind flaps and the louvers are apt to generate wind noise, which causes blown noise. For this reason, various measures have conventionally been taken to reduce the blowing noise caused by flaps and louvers. For example, for a laterally oriented flap, its cross-section is made to be an airfoil having a large convex warpage.
647. As for the louvers, a technique is provided in which a curved portion is provided in each louver so that when temperature-controlled air passes between adjacent louvers, the blowing noise is repeatedly reflected and attenuated between the curved portions of the adjacent louvers. It is described in JP-A-8-159546. Also,
Although it is not a flap or a louver, it is disclosed in Japanese Unexamined Patent Publication No. 5-9 that the cross section of each crosspiece of the front grill of the outdoor unit has a wing shape.
No. 3531.

[0004]

The airfoil shape is a cross-sectional shape in which the thickness gradually increases from the windward end to the middle portion, and gradually decreases from the middle portion to the leeward end. The air resistance is essentially low, and the wind noise can be suppressed low.

[0005] However, in the case of a horizontal flap in which the blowing direction is adjusted in the up-down direction, the flap is generally curved as a whole in accordance with the curved front panel of the indoor unit so as to double as an opening / closing lid for the air outlet. For this reason, if an airfoil shape is applied to the flap, as described above, the airfoil shape will have a large warp, and a large lift will be generated with this warp.
As a result, the external force applied to the flap support and the like increases,
It is necessary to reinforce the support.

On the other hand, the technique of providing a curved portion and attenuating the blowing noise between adjacent curved portions can be applied to a louver in which a large number of louvers are arranged in parallel in the width direction of the outlet. It is not applicable to flaps arranged in parallel. In addition, even in the case of a louver, since the damping effect is expected to change depending on the rotation angle, there is a problem in the stability of the effect.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and can stably reduce the blowing noise for both flaps and louvers, and can effectively generate lift even in the case of a flap having a large warp. It is an object of the present invention to provide a wind direction adjusting device for an air conditioner that can suppress the air flow.

To achieve the above object, a wind direction adjusting device for an air conditioner according to a first aspect of the present invention includes a rotary deflecting plate provided at an outlet for blowing temperature-controlled air into a room. In the wind direction adjusting device of the air conditioner for adjusting the blowing direction of the temperature-controlled air by changing the rotation angle of the deflecting plate, the windward end of the deflecting plate is thicker than other portions. In addition, a configuration in which the end surface of the thick end is curved into a substantially semicircular shape is employed.

According to this configuration, the temperature-controlled air that collides with the deflecting plate and flows along both surfaces of the deflecting plate is rectified, and the generation of Karman vortices is suppressed, thereby suppressing the generation of wind noise. Since the cross section of the deflecting plate is not an airfoil shape, the generation of lift is suppressed even in the case of a flap having a large warpage. Also,
Since the blowing resistance by the deflecting plate is reduced to suppress the blast noise and is not based on attenuation due to repeated collisions, the noise prevention effect remains unchanged even if the turning angle of the deflecting plate is changed.

In the wind direction adjusting device for an air conditioner according to a second aspect of the present invention, the thick end of the deflecting plate is gradually reduced in thickness toward the leeward side and smoothly continues to other portions. did. According to this configuration, the airflow resistance due to the deflection plate is further reduced.

In the wind direction adjusting device for an air conditioner according to a third aspect of the present invention, at least the other portion of the deflecting plate at the leeward side of the deflecting plate has a taper whose thickness gradually decreases toward the leeward side. The configuration was a shape. According to this configuration, the airflow resistance due to the deflection plate is further reduced.

In the wind direction adjusting device for an air conditioner according to a fourth aspect of the present invention, the deflecting plate is a louver that deflects the blowing direction in the left-right direction, and is formed linearly from the windward side to the leeward side. The configuration was adopted. According to this configuration, wind noise caused by the louver is reduced.

In the wind direction adjusting device for an air conditioner according to a fifth aspect of the present invention, the deflecting plate is a flap for deflecting a blowing direction in a vertical direction, and is generally adapted to a curved front panel of the air conditioner. The configuration was curved. According to this configuration, wind noise caused by flaps is reduced. Also,
Despite being curved, the generation of lift is suppressed.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing the structure of a wind direction adjusting device for an air conditioner according to an embodiment of the present invention, in the vicinity of an air outlet of an indoor unit. FIG.
(A) and (b) are two views of the louver, and FIG. 4 is an image diagram of an airflow state around the deflection plate.

As shown in FIG. 1, a wind direction adjusting device for an air conditioner according to an embodiment of the present invention is provided in an indoor unit 10 of a separate type air conditioner. The indoor unit 10 includes a main body casing 11 and a front panel 12 screwed to a front side thereof. A portion other than the lower edge of the front panel 12 is a suction port 13, where a suction grill 14 is provided. The lower edge of the front panel 12 is curved rearward downward, and an outlet 15 is formed over substantially the entire width of the front panel 12.

A heat exchanger 16 is provided behind the front panel 12, and a suction fan 17 is provided further behind the heat exchanger 16. The room air drawn into the main casing 11 from the suction port 13 by the suction fan 17 passes through the heat exchanger 16 and becomes temperature-controlled air. The temperature-controlled air is blown into the room from the air outlet 15 through a ventilation passage 19 formed at a lower portion in the main body casing 11. 18 is a heat exchanger 1
The drain pan provided below 6 serves also as the upper wall of the ventilation path 19. The lower wall of the ventilation path 19 is the main casing 11.
Is formed.

The wind direction adjusting device provided in the indoor unit 10 includes a rotatable flap 20 and a louver 30 provided as a deflection plate in the ventilation path 19.

The pivotable flap 20 is a horizontally long deflection plate provided near the air outlet 15 of the ventilation path 19 over substantially the entire width of the air outlet 15. Support portions 21 are provided on the upper surfaces of both sides of the flap 20. The support portion 21 is rotatably connected to a support portion 22 on the main body casing 11 side by a horizontal shaft 23. As a result, the flap 20 is rotatably supported around a horizontal axis, and the rotation angle is adjusted by a driving mechanism (not shown), so that the blowing direction of the temperature-controlled air into the room is adjusted in the vertical direction. When the operation of the indoor unit is stopped, the flap 20 is fixed at a position at which the outlet 15 is closed.

The flap 20 follows the curve of the lower edge of the front panel 12 with the outlet 15 closed.
The whole is curved downward (toward the support portion side) in a convex direction.
The windward end 20a of the flap 20 is a thick portion having a greater thickness than the other portions. The end face of the thick end portion 20a is curved in a substantially semicircular shape. On the leeward side of the thick end portion 20a, the thickness is gradually reduced so that the middle portion 20b having an approximately equal thickness is formed.
It is continuous. The leeward side of the equal thickness intermediate portion 20b is a tapered end portion 20c whose thickness gradually decreases toward the leeward side. The end face of the tapered end 21c is slightly rounded.

The ventilation path 1 is located on the windward side of the flap 20.
As shown in FIG. 3, the louvers 30 provided at 9 are a plurality of vertically-oriented deflecting plates arranged at equal intervals in the width direction of the air outlet 15. As shown in FIG. 2, each louver 30 has a support portion 32 below a main body portion 31 made of a thin plate. The support portion 32 is a plurality of snap-fit claw portions combined in a cylindrical shape, and is fitted into a round hole provided in a part of the main body casing 11 forming a lower wall of the ventilation passage 19. The main body 31 is supported rotatably about a vertical axis.

At the lower part of the main body 31, a connecting pin 3 is provided.
3 is provided at the end on the windward side. At an end of the lower part on the leeward side, an operation part 34 protruding to the leeward side (the side of the air outlet 15) is provided. The pin portion 33 is fitted in a concave portion 36 of a horizontally long connecting member 35 provided over a plurality of louvers 30. Specific Louver 3
When the rotation of the louver 30 is performed, the plurality of louvers 30, 30... Rotate about the vertical axis in conjunction therewith, and the blowing direction of the temperature-controlled air is adjusted in the left-right direction mainly by the upper half of the main body 31.

As shown in FIG. 3 (a), the upper half of the main body 31 which contributes to the adjustment of the blowing direction is an upwind end 30a.
Is a thick portion having a larger thickness than other portions. The end face of the thick end 30a is curved in a substantially semicircular shape.
The leeward side of the thick end portion 30a is connected to the tapered portion 30b by gradually reducing the thickness. The tapered portion 30b gradually becomes thinner toward the leeward side, and the distal end surface of the tapered portion 30b,
That is, the upper leeward end surface is slightly rounded.

Next, the function of the wind direction adjusting device for an air conditioner according to the embodiment of the present invention will be described.

The temperature-controlled air supplied to the ventilation passage 19 of the indoor unit 10 passes through a plurality of louvers 30, 30,... It is blown out into the room. Louver 30,
By adjusting the rotation angle about the vertical axis of 30..., The direction in which the temperature-controlled air is blown into the room is adjusted in the left-right direction.
By adjusting the rotation angle about the horizontal axis, the blowing direction of the temperature-controlled air into the room is adjusted in the vertical direction.

The sectional shape of each louver 30 and the sectional shape of the flap 21 are set as follows. In the upper half part of the main body 31 of each louver 30 that contributes to the adjustment of the blowing direction, the windward end 30a is a thick part having a greater thickness than the other parts, and the end face of the thick end 30a is While being curved in a substantially semicircular shape, the leeward side of the thick end portion 30a is
The thickness is gradually reduced and continues to the tapered portion 30b. In the flap 20, the windward end portion 20a is a thick portion having a greater thickness than the other portions, and the end surface of the thick end portion 20a is curved in a substantially semicircular shape, and the leeward portion of the thick end portion 20a is formed. Side is gradually reduced in thickness and is continuous with a substantially equal thickness middle portion 20b, and furthermore, the equal thickness middle portion 20b is a leeward side tapered end portion 20c.
Continuous.

When each louver 30 and flap 20 have such a cross-sectional shape, each louver 3 near the windward end is surrounded by a dashed line in FIG.
The temperature-adjusted air that collides with the zero and the flap 20 is rectified on the end face of the thick end and splits on both sides. Then, on both sides, the air flows smoothly downwind along each surface. For this reason,
The generation of Karman vortices due to the collision is prevented, and the generation of wind noise is suppressed.

In addition, the flap 20 is curved downward (toward the opposite side of the support) so as to follow the curve of the lower edge of the front panel 12 when the outlet 15 is closed. Since is different from the airfoil shape, the generation of lift due to bending is suppressed. For this reason, the external force applied to the support mechanism of the flap 20 is reduced as compared with the case of the airfoil cross section, and the structure of the support mechanism is simplified.

Further, since each louver 30 suppresses the wind noise itself, even if the rotation angle changes, a stable noise prevention effect is exhibited.

In the above embodiment, both the louvers 30 and the flaps 20 have the thick cross-sectional shape according to the present invention, but they may be employed in only one of them. In each louver 30, the upper half portion of the main body 31 made of a thin plate employs a thick cross-sectional shape according to the present invention,
The present invention is not limited to this, and it is only necessary to employ a portion that contributes to the adjustment of the blowing direction. Depending on the shape of the main body 31, it is possible to employ the thick cross-sectional shape of the tip according to the present invention almost entirely. .

[0030]

As described above, claim 1 of the present invention is provided.
The wind direction adjusting device for an air conditioner according to the present invention is characterized in that the windward end of the deflecting plate is made thicker than other portions, and the end face of the thick end is curved into a substantially semicircular shape, so that the wind is cut off. This has the effect of suppressing the generation of sound. Further, even if the rotation angle of the deflection plate is changed, a stable noise prevention effect is exhibited.

In the wind direction adjusting device for an air conditioner according to a second aspect of the present invention, the thick end portion of the deflector plate is gradually reduced in thickness toward the leeward side and smoothly connected to other portions. Thereby, wind noise is further reduced.

According to a third aspect of the present invention, in the wind direction adjusting device for an air conditioner, at least the leeward end of the deflecting plate has a tapered shape whose thickness gradually decreases toward the leeward side, so that a wind noise is generated. Is further reduced.

The wind direction adjusting device for an air conditioner according to claim 4 of the present invention reduces wind noise caused by a louver.

The wind direction adjusting device for an air conditioner according to the fifth aspect of the present invention reduces wind noise caused by the flap, suppresses the generation of lift due to the bending of the flap, and simplifies the flap support mechanism. Enable.

[Brief description of the drawings]

FIG. 1 is a side view of the vicinity of an air outlet of an indoor unit showing a structure of a wind direction adjusting device of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a view taken on line AA of FIG. 1;

FIG. 3 is a two-sided view of the louver of FIG. 1, (a) is a plan view,
(B) is a side view.

FIG. 4 is an image diagram of an airflow state around a deflection plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Indoor unit 11 Main body casing 12 Front panel 13 Suction port 14 Front grille 15 Outlet 16 Heat exchanger 17 Suction fan 19 Ventilation path 20 Flap (deflection plate) 20a Thick end 20b Equal thickness middle part 20c Taper end 21 Support Part 30 louver (deflecting plate) 30a thick end part 30b taper part 31 main body part 32 support part 33 pin part 34 operation part 35 connecting member

Claims (5)

[Claims] 1. A deflecting plate provided at an outlet for blowing conditioned air into a room, wherein the direction of the conditioned air is adjusted by changing the angle of rotation of the deflecting plate. In the wind direction adjusting device for an air conditioner, the windward end of the deflecting plate is thicker than other portions, and the end face of the thick end is curved in a substantially semicircular shape. Air conditioner wind direction adjustment device. 2. The wind direction of an air conditioner according to claim 1, wherein the thick end of the deflecting plate gradually decreases in thickness toward the leeward side and smoothly continues to other portions. Adjustment device. 3. The air according to claim 1, wherein at least the other end of the deflecting plate on the leeward side has a tapered shape whose thickness gradually decreases toward the leeward side. A wind direction adjustment device for a harmonic machine. 4. The deflecting plate is a louver for adjusting a blowing direction in a left-right direction, and is formed linearly from the windward side to the leeward side.
A wind direction adjusting device for an air conditioner according to item 1. 5. The air conditioner according to claim 1, wherein the deflecting plate is a flap for adjusting a blowing direction in a vertical direction, and is entirely curved in accordance with a curved front panel of the air conditioner. 4. The wind direction adjusting device for an air conditioner according to 2 or 3.