JPH0634197A - Air outlet device for air conditioner - Google Patents

Abstract

PURPOSE:To permit the regulation of arriving degree of air stream by arranging a member for changing air speed in a ventilating passage, in an air outlet device for an air conditioner. CONSTITUTION:A ventilating passage dividing member (guide vane) 20, extending from a base part opposed to the position of a rotary shaft toward the upstream side of a ventilating passage 4, is provided at a position near the air outlet port 3 of the ventilating passage 4 so as to be pivotable about the rotary shaft orthogonal to the ventilating passage 4. The guide vane 20 is pivoted by a pivoting mechanism whereby the ratio of divisions of the ventilating passage 4 at the tip end thereof is changed, the speed of air stream in a choked passage is increased, the reduction of amount of air is restrained and the arriving degree of the air stream is regulated while keeping good appearance. An airflow direction changing mechanism (guide plate) 10 is provided whereby the outlet direction of the air stream, changed by the pivoting position of the guide vane 20, can be made constant.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air blowing device of an air conditioner for blowing conditioned air into an conditioned space, and more particularly to an improvement of the conditioned air having a variable reach.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Laid-Open No. 3-37354.
As disclosed in the publication, a pair of substantially semi-cylindrical guide members are arranged in parallel at both ends of the air outlet so as to be orthogonal to the air passage, and each guide member is rotated around a rotation axis orthogonal to the air passage. It is a known technique to change the opening angle by moving the air passage to expand or narrow the ventilation passage to change the wind speed to change the reaching distance of the air flow.

[0003]

However, in the above-mentioned prior art, since the guide member is semi-cylindrical, the flow resistance along the side wall of the ventilation passage is large in the cylindrical portion inside the guide portion. As a result, although the effect of restricting the air flow can be obtained, there is a risk that the effect of reducing the air volume will be large as a whole.

Further, since the guide member has a shape projecting from the air outlet, the movement thereof can be seen from the inside of the room, which may impair the appearance.

The present invention has been made in view of the above points, and an object thereof is to make it look attractive by dividing a ventilation passage inside the ventilation passage and providing a means for changing the wind speed of each divided ventilation passage. To maintain the air flow well and to suppress the reduction of the air volume as much as possible, while allowing the reach of the air flow to be adjusted.

[0006]

Means for Solving the Problems To achieve the above object, the means of the present invention as defined in claim 1 blows conditioned air supplied through a ventilation passage (4) as shown in FIG. The target is an air blowing device of an air conditioner that blows out from an outlet (3) into an air-conditioned space.

The air outlet (3) of the ventilation passage (4)
At one site in the vicinity, the air passage (4) extends rotatably around a rotation axis orthogonal to the air passage (4) and extends toward the upstream side of the air passage (4) from the base corresponding to the rotation axis position. And a ventilation passage dividing member (20) for dividing the passage into an expansion-side passage that expands from the tip toward the base and a throttle-side passage that narrows from the tip toward the base, and the ventilation passage division member (20) around the rotation axis. And a rotation mechanism (21) for rotating it.

According to a second aspect of the present invention, in the first aspect of the invention, the wind direction changing mechanism (10) for changing the direction of the blown air is provided.

According to a third aspect of the present invention, in the above first aspect of the invention, the conditioned air blowing direction of the air outlet (3) is set so that the air flow becomes a wall adhering flow.

[0010]

With the above construction, in the first aspect of the invention, when the ventilation passage dividing member (20) is rotated by the rotation mechanism (21), the ventilation passage (4) at the base portion corresponding to the position of the rotation axis is formed. The division ratio of the ventilation passage (4) at the tip thereof changes with respect to the division ratio of), and the air flow is throttled in the throttle side ventilation passage whose passage area is narrowed toward the tip-shaped base. And
This throttling action increases the airflow velocity in the throttling side passage, and as a result, the momentum of the entire airflow is increased and the reach of the airflow is increased. Therefore, the degree of throttling is changed by the rotating operation of the ventilation passage dividing member (20) arranged inside the ventilation passage (4), the appearance is not impaired and the reduction of the air volume is suppressed as much as possible. It is possible to adjust the reach of the air flow.

According to the second aspect of the present invention, in the operation of the first aspect of the invention, not only the arrival degree of the air flow but also the blowing direction of the air flow is changed according to the rotation of the ventilation passage dividing member (20). By adjusting the position of the wind direction changing mechanism (10), the blowing direction is maintained at a constant direction.

According to the third aspect of the present invention, since the air flow blown out from the air outlet (3) becomes a flow that leaves once along the ceiling surface or the side wall of the indoor space, the ventilation passage dividing member (20) rotates. The reach of the airflow can be adjusted without causing a change in the blowing direction depending on the position.

[0013]

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

2 to 4 show the structure of an air blowing device (A) of an air conditioner according to an embodiment of the present invention, (1) is a chamber which is a casing of the air blowing device (A),
(2) is a duct attachment portion for attaching a blower duct from a blower fan (not shown) to the chamber (1), (3)
Is an air outlet opening in a rectangular shape, and in the chamber (1), as will be described later, an air passage () through which conditioned air flows from the duct mounting portion (2) to the air outlet (3). 4) is formed. Further, (10) is a guide blade for variably adjusting the wind direction of the conditioned air, (11) is a drive motor for driving the guide blade (10), and (20) is in the long side direction of the ventilation passage (4). A guide vane as a ventilation passage dividing member that extends to equally divide the ventilation passage, and (21) is a drive motor as a rotating mechanism for rotating the guide vane (20).

FIG. 1 shows a cross section of the air blowing device (A) installed on the ceiling surface (6). The guide vanes are attached to the air outlet member (5) forming the air outlet (3). (20) is attached. Guide vanes (20)
Is a pair of shaft members (20a), (20a) which are supported by two short side walls of the air outlet member (5) at both ends thereof.
And has a substantially semi-cylindrical shape of the shaft members (20a), (20a) and is rotatably provided around the rotary shaft orthogonal to the air flow through the shaft members (20a), (20a). And a gas flow guide portion (20c) extending in a wedge shape from the base portion (20b) toward the upstream side of the conditioned air so that both side surfaces intersect at their tips. That is, the air passage (4) is equally divided into two by the base portion (20b) of the guide vane (20), and when rotated by the drive motor (21), the division ratio of the air passage (4) at the tip and the base portion (4). 20b) in which the division ratio of the ventilation passage (4) is changed to narrow the passage area from the tip toward the base,
It is divided into an enlarged side passage in which the passage area increases from the tip end toward the base portion (20b), and the air flow in the throttle side passage is guided by the air flow guide portion (20c) while being narrowed by the shaft portion (20b). .

The guide vane (10) is formed in a substantially quarter cylindrical shape, and is provided so as to be retractable from the air outlet (3) along the inner surface of one long side wall of the air outlet member (5). At the projecting position (shown by the solid line), the air outlet (3) is bent to the left while squeezing, while at the buried position, the air outlet (3) is opened to the maximum and the direction of the blown air is vertically downward. It is designed to point.

Next, the relationship between the position of the guide vanes (20) and the air flow arrival degree D will be described with reference to FIG. As shown in FIG. 5A, when the guide vane (20) is tilted leftward in the drawing from the central position, the guide vane (2
The area of the left and right passages divided by 0) is A / 2
(A is the front cross-sectional area), but the wind speed vr on the right side is higher than the wind speed vl on the left side, so the wind speed is 0.25 m / sec.
The current wind velocity line, that is, the arrival position of the airflow that contributes to air conditioning is biased to the right as shown by the solid line in the figure. Figure 5
(B) is a change in the rotational position of the guide vane (20), that is, the blowing air velocity v with respect to the flow rate ratio R of the left and right passages, the momentum j of the air flow j (= Q ² / A (where Q is the amount of air blown from the blowing fan)) ), And a change characteristic of the air flow reachability D (maximum is “1”). When the guide vane (20) leans to the right in the figure, the wind speed vr on the right decreases to "0",
The left wind speed vl increases up to 2Q / A, and as a result,
The momentum jl of the air flow on the left also increases to 2Q ² / A. Similarly, when the guide vane (20) leans to the left in the figure, the right wind speed vr increases up to 2Q and the right air flow momentum jr increases up to 2Q ² / A. As a result, the momentum jt of the entire airflow increases when the guide vanes (20) are tilted to the left or right, rather than when they are in the center position.
The arrival degree D of the airflow increases.

Therefore, in the above embodiment, when the guide vane drive member (21) rotates the guide vane (20) from its central position to either the left or right side, the ventilation passage (4) in the base portion (20b). ) Split ratio R (= 1:
1), the division ratio R of the ventilation passage (4) at the tip is changed, and the tip of the guide vane (20) is changed to the base (20).
In the throttle side passage where the airflow is throttled toward b), the conditioned air is throttled along the airflow guide portion (20c) of the guide vane (20). Then, the airflow velocity vr in the throttle side passage
Is increased, and as a result, the momentum jt of the entire air flow is increased, and the degree of arrival D of the air flow is increased. At this time, since the conditioned air flows not only in the throttle side passage but also in the expansion side passage, it is possible to suppress the reduction of the air volume as a whole as much as possible and to arrange the air passage (4) inside. Also, since the degree of restriction of the air flow is changed by the rotating operation of the guide vane (20), the appearance is not spoiled.

In particular, when the air outlet (3) is provided with the guide vanes (10) for changing the wind direction of the blown air, the following advantages can be obtained. That is, as shown in FIG. 6, when the guide vane (20) is rotated to change the division ratio R of the ventilation passage (4) at its tip, the airflow arrival degree D changes, but the airflow also changes accordingly. The blowing direction (inclination angle θ with respect to the ceiling surface) also changes. Therefore, the guide vanes (1
By adjusting the position of 0), the blowing direction can be kept constant as shown in FIG. 7.

In the above embodiment, the guide vanes (1
0) to the maximum extent, as shown in FIG. 8, even if the blowing direction θ changes depending on the rotating position of the guide vane (20), the air flow causes a Coanda effect on the ceiling surface (6). , The airflow always flows along the ceiling surface (6), and only the position where the airflow moves downward from the ceiling surface (6) differs depending on the change in the wind speed, and it is necessary to consider the influence of the change in the blowing direction. There is no.

Therefore, by designing the structure of the air outlet member (5) so as to cause horizontal blowing, it is possible to adjust the turning position of the guide vane (20) without separately providing guide vanes. It is possible to change the arrival degree D of the airflow while keeping the blowing direction constant.

In the above embodiment, the guide vanes (2
0) is arranged at the position where the ventilation passage (4) is divided into two equal parts by the base portion (20b), but the present invention is not limited to this embodiment, and it is possible to divide it into any ratio. .

[0023]

As described above, according to the first aspect of the invention, the air blowing device of the air conditioner is configured to blow the conditioned air supplied through the ventilation passage from the air outlet to the air conditioned space. As a configuration, it is provided at a portion near the air outlet of the ventilation passage so as to be rotatable about a rotation axis orthogonal to the ventilation passage and to extend from the base portion corresponding to the rotation axis position toward the upstream side of the ventilation passage. Since the ventilation passage dividing member is arranged and the ventilation passage dividing member is rotated around the rotation axis, the change in the division ratio of the ventilation passage at the tip and the base of the ventilation passage dividing member is utilized to reduce the passage on the throttle side. The throttling effect of the air flow in (3) can change the degree of throttling of the air flow, so that it is possible to adjust the reach of the air flow while suppressing the reduction of the air volume as much as possible and maintaining a good appearance.

According to the invention of claim 2, in the invention of claim 1, since the wind direction changing mechanism for changing the blowing direction of the air flow at the air outlet is provided, it changes in accordance with the rotation of the ventilation passage dividing member. The blowing direction of the air flow can be kept constant.

According to the invention of claim 3, in the invention of claim 1, the structure of the air outlet is such that a flow adhering to the wall surface is generated. Therefore, even if there is no air flow direction changing mechanism, It is possible to adjust the degree of arrival of the airflow without causing a change in the blowing direction depending on the rotation position.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a configuration of a guide vane mounting portion of an air blowing device.

FIG. 2 is a front view of an air blowing device.

FIG. 3 is a right side view of the air blowing device.

FIG. 4 is a left side view of the air blowing device.

FIG. 5 is a diagram showing characteristics of changes in the wind speed, momentum, and reach of the air flow with respect to changes in the rotational position of the guide vanes.

FIG. 6 is a diagram showing a change state of a blowout direction due to a change in a rotational position of a guide vane.

FIG. 7 is a diagram showing adjustment of a blowing direction by guide vanes.

FIG. 8 is a diagram showing a state in which an adhesion flow of an air flow to the ceiling surface is generated.

[Explanation of symbols]

 3 Air Outlet 4 Ventilation Path 10 Guide Vane (Wind Direction Changing Mechanism) 20 Guide Vane (Ventilation Path Dividing Mechanism) 21 Drive Motor (Rotating Mechanism)

Claims (3)

[Claims] 1. An air blow-out device of an air conditioner for blowing conditioned air supplied through an air passage (4) from an air outlet (3) into an air-conditioned space, the air-conditioning device comprising: In a portion near the air outlet (3), the base extends in a rotatable manner around a rotation axis orthogonal to the ventilation passage (4), and extends from the base portion corresponding to the rotation axis position toward the upstream side of the ventilation passage (4). An air passage dividing member (20) that divides the air passage (4) into an expansion-side passage that expands from the tip toward the base and a throttle-side passage that narrows from the tip toward the base, and the air passage dividing member (20). ) Is provided around the rotation axis, and a rotation mechanism (21) is provided for the air conditioner. 2. The air blower for an air conditioner according to claim 1, further comprising a wind direction changing mechanism (10) for changing the direction of the blown air. 3. The air blow-out device for an air conditioner according to claim 1, wherein the air-conditioning air blow-out direction of the air blow-out port (3) is set so that the air flow becomes a wall-attached flow. Air conditioner air blower.