JPH0814411B2 - Indoor unit of air conditioner - Google Patents

Description

The present invention relates to an indoor unit of an air conditioner.

(Prior Art) In an indoor unit of a conventional air conditioner, for example,
As described in Japanese Patent Laid-Open No. 62-201333, the wind from the air outlet is changed by changing the attitude of the wind direction adjusting blade provided at the air outlet.

(Problems to be Solved by the Invention) However, in the type in which the wind is collided with the blades to change the wind direction like the indoor unit of the conventional air conditioner, not only a large noise is generated due to the collision, There was a problem that the pressure loss became large.

The present invention has been made to solve the above-mentioned conventional drawbacks, and an object thereof is to smoothly adjust the wind direction from the air outlet without causing a large pressure loss as in the conventional art, and to reduce noise and noise. An object of the present invention is to provide an indoor unit of an air conditioner capable of suppressing a decrease in the amount of blown air.

(Means for Solving the Problem) Therefore, in the indoor unit of the air conditioner according to the first aspect, the base end portion 61 of the blade 6 having flexibility is provided on the inner wall 21 of the ventilation passage forming the airflow outlet 2. Is attached, and the other end side 63 of the blade 6 is attached to the movable member 7 capable of reciprocating in the width direction on the blowout opening 24 side of the airflow outlet 2.

The indoor unit of the air conditioner according to the second aspect is
Proximal end portions 6 of the blades 6, 6 having flexibility on the inner walls 21, 22 of the ventilation passage that face each other across the airflow outlet 2
1, 61 are installed separately, and each of these separate blades 6,
The other end side 63, 63 of 6 is attached to each of the movable members 7, 7 that can reciprocate in the width direction on the side of the outlet opening 24 of the airflow outlet 2.

(Operation) According to the indoor unit of the air conditioner of the first aspect, when the movable member 6 moves in the width direction on the side of the air outlet 2 of the air outlet 2, the base end 61 is attached to the inner wall 21 of the ventilation passage. The other end 63 of the blade 6 moved together with the movable member 7,
The opening area and the opening direction of the opening 24 change. In this case, no matter where the other end 63 of the blade 6 is moved, the shape of the blade 6 is maintained in a smooth streamline shape due to its flexibility.

The operation of the indoor unit of the air conditioner according to the second aspect is the same as that of the first aspect, but in the case of the second aspect, the wind direction and the opening area of the blowout opening 24 are independently controlled. It is possible to

(Example) Next, specific examples of the indoor unit of the air conditioner of the present invention will be described in detail with reference to the drawings.

 FIG. 1 is an enlarged sectional view of a main part of the first embodiment.

In the indoor unit A of this air conditioner, an airflow outlet 2 is provided at the lower end of the box-shaped casing 1.
The airflow outlet is formed by a space surrounded by the upper and lower ventilation passage inner walls 21 and 22 and the left and right ventilation passage inner walls 23, and the blowout openings 24 thereof are opened on the front surface side and the lower surface side of the casing 1. ing. In addition to the heat exchanger 3 and the fan 4, a drain pan 5 is provided inside the casing 1, and a bottom wall 51 of the drain pan 5 is connected to an inner end portion of the upper ventilation passage inner wall 21. . As shown in the figure, the air flow outlet 2 is oriented obliquely downward.

A blade 6 is made of a soft synthetic resin, rubber, or another flat plate material having flexibility. Reference numeral 7 denotes a movable member. As shown in FIG. 4, the movable member 7 has a mounting plate 72 having a substantially isosceles triangular shape at both ends of a curved blindfold plate 71.
Is provided.

Then, as shown in FIG. 1, the base end portion 61 of the blade 6 is rotatably attached to the upper ventilation passage inner wall 21 via an edge frame 62.

On the other hand, the movable member 7 has a support shaft 73 provided on the mounting plate 72.
As shown in FIG. 4, it is swingably attached to the vicinity of the blowout opening 24 (FIG. 1), and the other end 63 of the blade 6 is attached to the edge frame at the bottom corner of the mounting plate 72. Mounted via 64. In addition, the blind plate 71 of the movable member 7 is configured to swing up and down about the support shaft 73 between above and below the inner wall 21 of the upper ventilation passage, and when it moves downward, the opening is opened. The protruding width of the blind plate 71 in the width direction of 24 becomes large, and when the screen moves upward, the opening 24
The protruding width of the blind plate 71 in the width direction of is reduced.

With the above configuration, when the movable member 7 is moved to increase the protruding width of the blind plate 71 in the width direction of the opening 24 as shown by the phantom line in FIG.
As the frontage area of 24 becomes smaller, the direction of the opening is changed to the downward state. On the contrary, as shown by the solid line in the figure, when the projected width of the blindfold plate 71 is reduced, the frontage area of the opening 24 is correspondingly increased and the direction of the opening is changed slightly upward. In any case, the position of the base end portion 61 of the blade 6 is maintained at a fixed position, and the overall shape thereof is maintained in a streamlined shape that is smoothly curved due to the flexibility of the blade 6 itself. In order to maintain the shape of the blade 6 in a streamlined shape, it is effective to make the blade 6 with a material having flexibility and a moderately strong waist.

In this manner, when the movable member 7 is swung in the width direction of the opening 24 to change the frontage area and the frontage direction, the blowing air velocity and the wind direction from the opening 24 are changed accordingly. Further, in this case, since the shape of the blade 6 is maintained in a streamlined shape, the wind passing through the airflow passage of the airflow outlet 2 is blown out from the opening 24 after being guided by the smooth streamlined blade 6. As a result, a large pressure loss does not occur when the wind is deflected, and the reduction of the blown air volume and the generation of noise are suppressed.

2 and 3 are enlarged cross-sectional views of the main part of the second embodiment.

This embodiment is different from that shown in FIG. 1 in that the blade 6 and the movable member 7 are attached not only to the upper ventilation passage inner wall 21 but also to the lower ventilation passage inner wall 22. The configuration is similar to that of the embodiment shown in FIG. Reference numeral 9 is a support for keeping the shape of the blade 6 proper.

According to this embodiment, the airflow passing through the airflow outlet 2 is guided by the upper blade 6 and the lower blade 6 which are kept in a smooth streamline shape, and is then blown out from the opening 24, so that the wind is deflected. The pressure loss at that time is further smaller than that in the case of FIG. 1, and the effect of suppressing the reduction of the blown air volume and the generation of noise is more remarkably exhibited. In addition, in this embodiment, since the opening area and the wind direction can be changed independently, there is an advantage that the blowing air speed can be optimally set regardless of the set air volume of the fan 4. There is also an advantage that the deflection width in the wind direction can be increased. 2 shows the opening 24 of the upper movable member 7.
In the example in which the width of the opening of the movable member 7 on the lower side is increased and the width of the opening of the movable member 7 on the lower side is decreased to set the direction of the opening downward, this is suitable for indoor heating. The reverse of FIG. 3 is suitable for indoor cooling.

FIG. 5 is a time chart showing an example of control of the frontage area during heating operation. When the operation method according to this time chart is adopted, as shown in FIG. The rotating shaft 81 of the motor 8 is interlockingly connected, and the operation of the motor 8 is controlled by a signal from a TC temperature measuring sensor installed in the heat exchanger 3.

According to the control example of the figure, at the start of the heating operation, the fan 4 does not rotate and the air volume remains zero until the heat exchanger temperature, that is, the TC temperature reaches a constant value, and the opening 24 is opened by the blade 6 It is fully closed by (state 1). When the TC temperature reaches a certain value, the fan 4 rotates at a medium speed, and while the set air volume of the fan is small, the opening of the opening 24 by the blade 6 is set to about 1/4 of the fully opened speed to accelerate the blowing air speed ( State 2). In this state 2, the blowing air velocity becomes high for the set air volume of the fan 4, so that the indoor circulation of the heating airflow is favorably performed. When the TC temperature further rises and reaches the equilibrium value from around the equilibrium value, the fan 4 rotates at high speed and the set air volume is increased. When the air volume increases, the blade 6 opens the opening 24.
The opening degree of the air conditioner is set to about half open, and the increase of the blowing air speed is suppressed, and the blowing air speed is kept optimum, and comfortable air flow control is performed.

In each of the above embodiments, the base end portion 61 of the blade 6 is
The blade 6 is rotatably attached, but the base end of the blade 6
61 may be fixed to the inner wall 21 of the ventilation passage.

(Effect of the invention) According to the indoor unit of the air conditioner described in the first and second aspects, when the frontage area and the blowing direction of the airflow outlet are changed, ventilation of the airflow outlet is performed. The wind passing through the passage is blown out from the above-mentioned opening after being guided by the smooth streamlined blade, so that a large pressure loss does not occur when deflecting the wind, and the reduction of the blown air volume and the generation of noise are suppressed. And the comfort of use is improved.

Further, in the indoor unit of the air conditioner according to the second aspect, it is possible to control the wind direction and the opening area of the blowout opening independently, but as a result, the blown wind speed is changed by changing the wind direction. Unlike the above case, the wind direction control and the wind speed control can be performed independently of each other, and more comfortable air flow control can be performed.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view of an essential part of a first embodiment of an indoor unit of an air conditioner according to the present invention, and FIGS. 2 and 3 are enlarged sectional views of an essential part of a second embodiment. The figure is an exploded perspective view showing the movable member and the blade, and FIG. 5 is a time chart showing an example of controlling the frontage area during the heating operation. A: Indoor unit of air conditioner, 2 ... Airflow outlet,
6 ... Blade, 7 ... Movable member, 21, 22 ... Ventilation passage inner wall, 24 ... Blowout opening of airflow outlet, 61 ... Blade end portion, 63 ... Blade other end portion.

Claims (2)

[Claims] 1. A base end portion (61) of a flexible blade (6) is attached to an inner wall (21) of a ventilation passage forming an airflow outlet (2), and the other end of the blade (6) is attached. Edge side (6
An air conditioner indoor unit characterized in that 3) is attached to a movable member (7) that can reciprocate in the width direction on the air outlet (2) side of the air outlet (2). 2. A base end portion (61) of a blade (6) (6) having flexibility on each of the ventilation passage inner walls (21) (22) sandwiching the airflow outlet (2) and facing each other. (61) are attached to each other, and the other ends (63) (63) of the respective blades (6) (6) are arranged in the width direction on the side of the outlet opening (24) of the airflow outlet (2). Reciprocating movable members (7)
An indoor unit of an air conditioner, which is attached to (7).