JP3077584B2 - Ceiling-mounted air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-mounted air conditioner.

[0002]

2. Description of the Related Art A conventional ceiling-mounted air conditioner (for example, JP-A-6-307666) will be described with reference to FIG. FIG. 3 is a longitudinal sectional view of a peripheral portion of an indoor unit of a ceiling embedded type of an air conditioner. In the figure, 51 is a casing embedded in the ceiling surface T,
An outlet 53 is formed in a lower surface panel 52 of the casing 51. The outlet 53 is provided with a horizontal flap 54 for deflecting the blown air so as to be rotatable around a horizontal axis 55.

[0003]

However, in such a ceiling-mounted type air conditioner, the horizontal axis 55 supports the horizontal flap 54 near its deep end (right end in FIG. 3) due to the layout near the outlet. Therefore, when the horizontal flap 54 is fully opened as shown by a two-dot chain line in the figure, the tip P projects greatly downward from the ceiling surface T (L in the figure).
Therefore, when this ceiling-embedded air conditioner is installed in a kitchen to which a hanging cabinet 56 is attached as shown in FIG. 4, for example, the horizontal flap 54 may interfere with the opening / closing door 57. In order to avoid this, the air conditioner must be installed away from the hanging cabinet 56, but this will weaken the air conditioning effect on the cooking space K immediately below the hanging cabinet 56. In addition, there is a demand that hot air or the like be blown to the feet when working in the cooking space K. As described above, the airflow from the air outlet near the ceiling reaches the vicinity of the floor sufficiently to direct the air flow. It is necessary to impart the airflow to the spot airflow, which is difficult with the conventional ceiling-mounted air conditioner.

[0004] To further explain the movement of the horizontal flap 54 shown in FIG. 3, the center of gravity (the black circle at the base end of the downward arrow) crosses the horizontal axis 55 from left to right in the figure as the horizontal flap 54 rotates. In the meantime, the rotational moment generated by the weight of the horizontal flap 54 during that time is reversed from the counterclockwise direction to the clockwise direction. Therefore, at the time of this reversal, the movement of the horizontal flap 54 is temporarily stopped due to backlash or the like of the rotating system, and there is a disadvantage that a smooth movement cannot be obtained.

In order to prevent the horizontal flap 54 from projecting and changing the rotational moment, for example, FIG.
It is conceivable to dispose the support shaft 55 at the point O at the center of the horizontal flap 54, that is, almost immediately in the width direction of the horizontal flap 54, and immediately above the center of gravity of the closed state of the flap. (Approximately 60 °) near the full open position, the back of the horizontal flap 54 (right side in the figure).
However, there is a disadvantage that the amount of air passing through the airflow increases and the wind direction controllability deteriorates. Further, in the vicinity of 60 ° in the swing range, the gap between the tongue Z and the horizontal flap 54 becomes narrow, the static pressure inside the apparatus becomes large, and there is a disadvantage that the amount of blown air becomes extremely small.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and has as its object to reduce the amount of protrusion of the horizontal flap from the ceiling surface by reducing the turning radius of the horizontal flap, thereby enabling free installation. It is an object of the present invention to provide a ceiling-embedded air conditioner capable of improving air conditioning and improving wind direction control. It is another object of the present invention to prevent the rotation moment generated by the weight of the horizontal flap from being reversed and to make the movement of the horizontal flap smooth.

[0007]

According to the first aspect of the present invention, there is provided a ceiling-embedded air conditioner in which an air outlet is formed in a lower surface of a casing, and a horizontal flap for deflecting air blown from the air outlet is provided around a horizontal axis. In the rotatable ceiling-mounted air conditioner, the horizontal flap 4 is divided in the width direction, and the horizontal flaps 4a and 4b are positioned above the horizontal flaps 4a and 4b in the fully closed position.
Around each horizontal axis 6a, 6b placed, each water
Rotate the flat flaps 4a and 4b between the fully closed position and the fully open position.
The horizontal shafts 6a and 6b and the horizontal flags
Horizontal flaps 4a, 4b
While rotating over the fully closed position and the fully open position,
The trajectories of the centers of gravity of the horizontal flaps 4a and 4b are represented by the horizontal axes 6a and 6b.
The horizontal axis so that it does not cross the vertical plane
6a and 6b are positioned . Here, the length direction of the horizontal flap refers to a direction parallel to the horizontal axis, and the width direction refers to a direction orthogonal to the horizontal axis on the plane of the horizontal flap.

In this ceiling-embedded air conditioner, the horizontal flaps 4 are divided in the width direction, so that each horizontal flap 4a,
4b becomes shorter. Therefore, even if the air conditioner is installed close to the hanging cabinet 56, the horizontal flaps 4a, 4b
However, there is little possibility of interference with the door 57. Further, since the blowing airflow is deflected by the plurality of horizontal flaps 4a and 4b, the wind direction control is improved, the directivity of the blowing airflow is improved, a strong spot airflow is obtained, and the blowing airflow can reach near the floor. Moreover, in this ceiling-mounted air conditioner,
Rotational moment caused by the weight of the horizontal flaps 4a and 4b
Is not turned over, the backlash of the rotating system
The horizontal flaps 4a, 4b
Works smoothly.

Furthermore ceiling embedded type air conditioner according to claim 2, Oite to claim 1, horizontal flap 4a, 4b of the horizontal axis 6a, links 11a for connecting respectively to 6b, 11b
And a link rod 13 connecting the links 11a and 11b at a position offset from the center of the horizontal axis.
One of the links 11a and 11b is connected to the rotary drive device 14.

In the ceiling-mounted type air conditioner, the rotation driving force of the rotation drive device 14 is transmitted to the plurality of horizontal shafts 6a, 6b via the links 11a, 11b and the link rod 13, and the horizontal flaps 4a, 4b rotates in conjunction with it.

The ceiling-mounted air conditioner according to claim 3 is:
The horizontal flaps (4a, 4a ) according to claim 1 or claim 2 .
b is formed so as to close the air outlet 3 when fully closed and to close between the horizontal flaps 4a and 4b.

In this ceiling-mounted type air conditioner, the horizontal flaps 4a and 4b close the air outlet 3 when the air conditioner is fully closed, and the gap between the horizontal flaps 4a and 4b is small.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a specific embodiment of the ceiling-mounted air conditioner of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an embodiment of the present invention,
It is a longitudinal cross-sectional view of the periphery in the ceiling embedded type indoor unit.

In FIG. 1, reference numeral 1 denotes a casing embedded in a ceiling surface T, and an outlet 3 is formed in a lower panel 2 of the casing 1. The outlet 3 is provided with a horizontal flap 4 for deflecting the blown air. This horizontal flap 4 has two sheets 4a, 4b in the width direction.
The horizontal flaps 4a and 4b are provided with arms 5a and 5b attached at appropriate intervals in the length direction.
Are connected to the horizontal shafts 6a and 6b, respectively. The horizontal shafts 6a and 6b are rotatably supported by support pieces 7a and 7b provided at appropriate intervals in the casing 1. Each horizontal axis 6a, 6b is positioned substantially at the center in the width direction of the corresponding horizontal flap 4a, 4b, and is located at the fully closed position of each horizontal flap 4a, 4b.
Above it.

The horizontal flaps 4a and 4b are moved between a fully closed position shown by a solid line and a fully opened position shown by a dashed line in FIG.
The center of gravity (the black circle at the base of the downward arrow) is positioned so that the center of gravity (black circle at the base end of the downward arrow) is always located on the right side of the horizontal axes 6a and 6b.
The rotational moments generated by the weights of the horizontal axes 6a and 6b always act clockwise on the horizontal axes 6a and 6b. You
That is, the horizontal flaps 4a and 4b are in the fully closed position and fully open.
The horizontal flaps 4a, 4a
The locus of the center of gravity of b extends along the axis of the horizontal axis 6a, 6b
The horizontal axes 6a and 6b are positioned so as not to cross the vertical plane.
Have been .

The outer horizontal flap 4a is positioned so as to be close to the outer edge 3a of the outlet 3 when fully closed, and the inner horizontal flap 4b is positioned so as not to interfere during rotation while the inner edge 3b of the outlet 3 is fully closed. The horizontal flaps 4a and 4b close the outlet 3 when fully closed. Also the outer horizontal flap 4
The inner edge of a and the outer edge of the inner horizontal flap 4b are cut obliquely, and the edges overlap each other when fully closed, so that the gap between the horizontal flaps is closed.

FIG. 2 is an exploded perspective view showing a rotation driving mechanism of the horizontal flaps 4a and 4b. In the figure, 11a, 1
1b is a link connected to the horizontal axes 6a and 6b of the horizontal flaps 4a and 4b, respectively.
Are formed with connecting holes 12a and 12b offset by predetermined dimensions from the horizontal axes 6a and 6b. Reference numeral 13 denotes a link rod having pins 13a and 13b at both ends, and a pin 13 is provided in the connection holes 12a and 12b of each link 11a and 11b.
The links 11a and 11b are connected by rotatably fitting the links 11a and 13b. Further, a stepping motor 14 which is a rotation driving device is connected to one link 11b. Therefore, the stepping motor 14
Is transmitted from the link 11b to the horizontal shaft 6b,
Further, the light is transmitted to the other horizontal shaft 6a via the links 11a and 11b and the link rod 13 which form the parallel link, whereby the horizontal flaps 4a and 4b rotate in conjunction with each other.

In the ceiling-embedded air conditioner of the above construction, the horizontal flaps 4 are divided into two in the width direction, so that the width of each of the horizontal flaps 4a, 4b is reduced, and in addition, each of the horizontal shafts 6
Since a and 6b are located substantially in the middle of the width direction of the corresponding horizontal flaps 4a and 4b, the turning radius becomes substantially minimum, and the protrusion amount L of the tip of the horizontal flap from the ceiling surface T decreases. Therefore, even when the air conditioner is installed close to the hanging cabinet 56 or the like, the horizontal flaps 4a and 4b are less likely to interfere with the opening / closing door 57, and the installation restrictions are reduced. Therefore, for example, if the air conditioner is installed close to the hanging cabinet 56 of the kitchen, a powerful air conditioning effect can be provided to the cooking space immediately below. Further, since the blowing airflow is deflected by the plurality of horizontal flaps 4a and 4b, the wind direction control is improved, the directivity of the blowing airflow is improved, a strong spot airflow is obtained, and the blowing airflow can reach near the floor. Therefore, for example, warm air can be sent to the feet in the kitchen, and comfort can be improved.

Further, since the rotational moment generated by the weight of the horizontal flaps 4a and 4b always acts clockwise in FIG. 1 and does not reverse, there is no temporary stop due to the backlash of the rotating system, and the horizontal flaps 4a and 4b Operates smoothly, and wind direction control can be performed stably.

Furthermore, since only one stepping motor 14 is required, the cost is reduced, and the two horizontal flaps 4a and 4b rotate in conjunction with each other, so that the wind direction control is improved. Moreover, since the horizontal flaps 4a and 4b close the outlet 3 when fully closed and there is no gap between the horizontal flaps, the appearance of the ceiling-embedded air conditioner when the horizontal flap is fully closed is enhanced in appearance. Can be.

In the above embodiment, the horizontal flap 4 is
Although it is divided, it may be divided into three or more.

[0022]

As described above, in the ceiling-embedded air conditioner of the first aspect, since the amount of protrusion of the horizontal flap tip from the ceiling surface is reduced, restrictions on installation are reduced, and the air conditioner is hung. It can be installed close to a cabinet, etc., for example, and can provide a powerful air conditioning effect to the cooking space directly below the hanging cabinet in the kitchen, and can improve the wind direction control and improve the directivity of the blown air flow. In addition, a strong spot airflow can be obtained, and for example, foot heating in a kitchen can be performed, and comfort can be improved. Moreover, the horizontal flash
The air conditioner operates smoothly, so the wind direction can be controlled stably.
You.

Further, according to the second aspect of the present invention, a common rotary driving device can be used, so that the cost is reduced, and the plurality of horizontal flaps rotate in conjunction with each other, so that the wind direction control is improved.

According to the third aspect of the present invention, the aesthetic appearance of the ceiling-mounted air conditioner when the horizontal flap is fully closed can be enhanced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a peripheral portion of an indoor unit of an embodiment of a ceiling-embedded air conditioner of the present invention.

FIG. 2 is an exploded perspective view showing the rotation drive mechanism of the embodiment.

FIG. 3 is a longitudinal sectional view corresponding to FIG. 1 for explaining a conventional example.

FIG. 4 is a side view of a room for explaining problems in a conventional example.

[Explanation of symbols]

 Reference Signs List 1 casing 3 outlet 4 horizontal flap 4a horizontal flap (outside) 4b horizontal flap (inside) 6a horizontal axis 6b horizontal axis 11a link 11b link 13 link rod 14 stepping motor (rotary drive device) L Projection amount T ceiling surface K cooking Space-more-

────────────────────────────────────────────────── ─── Continuation of the front page (72) Mitsuyo Uchida 1000-2 Oya, Okamoto-cho, Kusatsu-shi, Shiga Prefecture Daikin Industries, Ltd. Shiga Works (56) References JP-A-3-5661 (JP, A) ( 58) Field surveyed (Int.Cl. ⁷ , DB name) F24F 13/14

Claims (3)

(57) [Claims] In a ceiling-embedded air conditioner, an air outlet is formed on a lower surface of a casing, and a horizontal flap for deflecting air blown from the air outlet is provided rotatably around a horizontal axis. 4) dividing the width direction, in the fully closed position of the horizontal flap (4a) (4b), the upper
Each horizontal axis (6a) (6b)
In addition, the horizontal flaps (4a) and (4b) are
It is provided rotatably between the open position and each horizontal axis (6
a) (6b) and each horizontal flap (4a) (4b)
The horizontal flaps (4a) and (4b) are in the fully closed position.
Between the horizontal flap and
The trajectories of the centers of gravity of (4a) and (4b) are on the horizontal axis (6a) (6b)
The horizontal axis so that it does not cross the vertical plane
(6a) The ceiling-mounted type air conditioner wherein (6b) is positioned . 2. A link (11a) connected to the horizontal axis (6a) (6b) of the horizontal flap (4a) (4b).
(11b) and a link rod (13) for connecting the links (11a) and (11b) at a position offset from the center of the horizontal axis, and one of the links (11a) (1
2. An air conditioner according to claim 1, wherein 1b) is connected to a rotary drive (14). 3. The horizontal flaps (4a) and (4b) close the air outlet (3) when fully closed, and the horizontal flaps (4a) and (4b).
The ceiling-embedded air conditioner according to claim 1 or 2 , wherein the space between a) and (4b) is formed to be closed.