JPH04158154A - Indoor unit of air conditioner - Google Patents

Abstract

PURPOSE:To enable a smooth adjustment of wind direction from a diffuser and to prohibit noise and dropdown of diffused wind volume by a method wherein a blade is mounted at a base end part on a wind passage inner wall and at the other end side on a movable member which can reciprocate on a diffusing opening side of an airstream diffuser. CONSTITUTION:When a movable member 7 is moved to increase a protruding width of a blind plate 71 with respect to a width direction of an opening 24, for example, as shown by an imaginary line, an opening area of the opening 24 is decreased corresponding to the protruding width and a direction of the opening is changed toward a downward direction. On the contrary, when the protruding width of the blind plate 71 is decreased as shown by a solid line, the opening area of the opening 24 is increased and the direction of the opening is changed to a rather upward direction. In either case, a base end part 61 of a blade 6 is held at a constant position and a whole figure of the blade 6 is maintained in a smoothly curved streamline shape because of the flexibility of the blade 6. To maintain the figure of the blade 6 in a streamline shape, it is effective to make the blade 6 of a material which is flexible and properly firm.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an indoor unit of an air conditioner.

(Prior art) In the indoor unit of a conventional air conditioner, for example,
As described in Japanese Patent No. 2-201333, the airflow from the air outlet is changed by changing the attitude of a wind direction adjusting blade provided at the air outlet.

(Problem to be solved by the invention) However, in a conventional air conditioner indoor unit that changes the direction of the wind by colliding the wind with the blades, not only does the collision generate large noise, but also the There was a problem that the pressure loss increased.

This invention was made to solve the above-mentioned conventional drawbacks, and its purpose is to be able to smoothly adjust the direction of air from the outlet without causing a large pressure drop unlike the conventional method, and to reduce noise and An object of the present invention is to provide an indoor unit of an air conditioner that can suppress a decrease in the amount of air blown out.

(Means for solving the problem) Therefore, the indoor unit of the air conditioner according to the first claim is as follows:
A proximal end 61 of a flexible blade 6 is attached to the inner wall 21 of the airflow passage forming the airflow outlet 2, and the other end 63 of the blade 6 is connected to the airflow outlet 24 side of the airflow outlet 2. It is characterized in that it is attached to a movable member 7 that can reciprocate in the width direction.

Further, the indoor unit throat of the air conditioner according to the second claim is:
Inner walls 21 and 22 of the ventilation passage facing each other across the airflow outlet 2
A proximal end 61.61 of a flexible blade 6.6 is separately attached to each of the blades 6.6, and the other end 63.63 of each blade 6.6 is connected to the air outlet 2. Separate movable members 7 that can reciprocate in the width direction on the side of the opening 24
．． It is characterized by being attached to 7.

(Function) Indoor unit 9 of the air conditioner according to the first claim. According to the above, when the movable member 6 moves in the width direction on the side of the air outlet 24 of the airflow outlet 2, the other end 63 of the blade 6 whose base end 61 is attached to the inner wall 21 of the air passage moves together with the movable member 7. As the opening 24 moves, the frontage area and opening direction of the opening 24 change.

In this case, no matter which position the other end 63 of the blade 6 is moved, the shape of the blade 6 is maintained in a smooth streamlined shape due to its own flexibility.

Note that the function of the indoor unit of the air conditioner described in the second claim is also the same as that in the first claim, but in the case of the second claim, the wind direction and the opening area of the outlet opening 24 are independent of each other. It is possible to control the

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

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

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

Reference numeral 6 denotes a blade, which is made of soft synthetic resin, rubber, or other flexible flat plate material.

Reference numeral 7 designates a movable member, and as shown in FIG. 4, this movable member 7 is provided with substantially isosceles triangular mounting plates 72 at both ends of a curved blind plate 71.

As shown in FIG. 1, a base end 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.
(FIG. 4), the blade 6 is swingably attached near the blow-off opening 24 (FIG. 1), and the other end 63 of the blade 6 is attached to the bottom corner of the mounting plate 72. 64.

Moreover, the blind plate 71 of the movable member 7 is connected to the upper ventilation passage inner wall 21.
The blind plate 71 is configured to swing up and down between the upper and lower sides around the support shaft 73, and when it moves downward, the width of the peak of the blind plate 71 in the width direction of the opening 24 becomes larger. When moving upward, the opening 24
The peak width of the blind plate 71 in the width direction becomes smaller.

With the above configuration, when the movable member 7 is moved to increase the peak width of the blind plate 71 in the width direction of the opening 24, for example, as shown by the imaginary line in FIG. As the area becomes smaller, the direction of the opening is changed to face downward. Conversely, if the width of the peak of the blind plate 71 is made smaller as shown by the solid line in the same figure, the frontage area of the opening 24 becomes correspondingly larger and the direction of the opening is changed slightly upward. In either case, the position of the proximal end 61 of the blade 6 is maintained at a constant position, and the overall shape is maintained in a smoothly curved streamline shape due to the flexibility of the blade 6 itself. In order to maintain the streamlined shape of the blade 6, it is effective to make the blade 6 from a material that is flexible and has a moderately strong stiffness.

In this way, 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 opening 24
The speed and direction of the blowing wind change accordingly. In this case, since the blade 6 is kept in a streamlined shape, the wind passing through the ventilation path of the airflow outlet 2 is guided by the smooth streamlined blade 6 and then blown out from the opening 24. Therefore, a large pressure loss does not occur when the wind is deflected, and a decrease in the amount of air blown out and generation of noise are suppressed.

FIGS. 2 and 3 are enlarged sectional views of main parts of the second embodiment.

This embodiment differs from the one in FIG. 1 only in that the blade 6 and the movable member 7 are attached not only to the upper ventilation duct inner wall 21 but also to the lower ventilation duct inner wall 22. The configuration is similar to the embodiment shown in FIG. 9 is blade 6
It is a support to maintain the proper shape.

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 then blown out from the opening 24, so that the airflow is deflected. The pressure loss during this time is further reduced than in the case shown in FIG. 1, and the effect of suppressing the reduction in the amount of air blown and the generation of noise is exhibited even more markedly. Further, in this embodiment, since the opening area and the wind direction can be changed independently, there is an advantage that the blowing wind speed can be optimally set without depending on the set air volume of the fan 4. It also has the advantage of allowing a wide range of wind deflection. Note that FIG. 2 shows the opening 2 of the upper movable member 7.
The opening 2 of the lower movable member 7 is
This is an example in which the width of the peak relative to 4 is made smaller and the frontage is set to face downward, making it suitable for indoor heating. Figure 3 is the opposite and is suitable for indoor cooling.

FIG. 5 is a time chart showing an example of controlling the frontage area during heating operation, and when an operating method based on this time chart is adopted, the movable member 7 as shown in FIG.
A rotating shaft 81 of a motor 8 is interlocked with the support shaft 73 of the motor 8, 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 shown in the figure, at the start of heating operation, the fan 4 does not rotate and the air volume remains at zero until the heat exchanger temperature, that is, the TC temperature reaches a certain value, and the opening 24 is closed to the blade. 6 (state 1). When the TC temperature reaches a certain value, the fan 4 rotates at a medium speed, and the blade 6 opens the opening 24 while the set air volume of the fan is low.
The opening degree of the opening is set to about 1/4 of the full opening, and the blowing air speed is increased (state 2). In this state 2, the blowing air velocity becomes faster than the set air volume of the fan 4, so that the indoor circulation of the heating airflow is performed satisfactorily. When the TC temperature further increases 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 amount of air increases, the opening degree of the opening 24 by the blade 6 is set to about half open to suppress an increase in the blowing air speed, and the blowing air speed is maintained at an optimum level, thereby providing comfortable airflow control.

Note that in each of the above embodiments, the base end 61 of the blade 6
Although the blade 6 is rotatably attached, the base end 61 of the blade 6 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 claim and the second claim, when the frontage area and the blowing direction of the airflow outlet are changed, the ventilation of the airflow outlet is changed. The wind passing through the channel is guided by the clean, streamlined blades and then blown out from the opening, so no large pressure loss occurs when the wind is deflected, and the reduction in air volume and noise generation are suppressed. This improves the comfort of use.

Further, in the indoor unit of the air conditioner according to the second claim,
Although it is possible to control the wind direction and the opening area of the outlet opening independently, as a result, unlike the conventional case where the outlet air speed changes depending on the change in the wind direction, the wind direction control and the wind speed control can be controlled mutually. This allows airflow to be controlled independently, making airflow control much more comfortable.

[Brief explanation of the drawing]

FIG. 1 is an enlarged sectional view of a main part of a first embodiment of an indoor unit 7) of an air conditioner according to the present invention, FIGS. 2 and 3 are enlarged sectional views of main parts of a second embodiment, FIG. 4 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 heating operation. A... Indoor unit of air conditioner, 2... Airflow outlet, 6... Blade, 7... Movable member, 2I, 22
...Inner wall of ventilation duct, 24...Blowout opening of airflow outlet,
61... Proximal end of the blade, 63... Other end of the blade. Patent applicant: Daikin Industries, Ltd. Figure 2 Figure 3

Claims (1)

[Claims] 1. The proximal end (61) of a flexible blade (6) is attached to the inner wall (21) of the ventilation passage forming the airflow outlet (2). ), the other end side (63) is
An indoor unit for an air conditioner, characterized in that it is attached to a movable member (7) that can reciprocate in the width direction on the side of the air outlet (24) of the air outlet (2). 2. The inner walls of the ventilation duct facing each other across the airflow outlet (2)
The proximal ends (61) (61) of flexible blades (6) (6) are attached to each of the blades (6) (6) (21) (22), respectively, and Other end side (
63) (63) is the air outlet (24) of the air outlet (2).
) sides that can reciprocate in the width direction (7)
(7) An indoor unit of an air conditioner, characterized in that it is attached to.