JP2004053196A - Wind direction controller and air conditioner using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a wind direction controller in which a decrease in an air capacity for changing a wind direction of a vertical direction of air diffused from an air duct or a vibration/noise is suppressed while a stream line resistance is suppressed. <P>SOLUTION: In the wind direction controller provided in the air duct and having a wind direction board for changing direction of the vertical direction of an air flow diffused from the duct, the wind direction board includes a plurality of substantially one row state of wind direction plates, in such a manner that a direction of the air flow is changed gradually in a target direction by controlling an inclining angle of the vertical direction of the respective wind direction plates of this one row state. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a wind direction control device that adjusts streamline resistance of a wind direction plate in response to a change in air flow in a vertical direction, and an air conditioner using the same.
[0002]
[Prior art]
Conventional air-direction control device, in the wind direction plate 3 provided on the air outlet of the air passage, when changing the flow of an angle theta ₁ of the air blown out from the air outlet in the horizontal direction, as shown in FIG. 11, the wind direction The shape of the upstream side of the plate 3 is adjusted to the angle θ ₁ of the blowing air path, and the shape of the downstream side is made substantially horizontal, and the upstream and downstream wind direction plates are set to a certain curvature, that is, with respect to the wind direction plate. A wind direction plate is formed by connecting at a curvature surface such that the stream line resistance of the wind is equal to or less than a preset stream line resistance, and the wind violently collides with the wind direction plate 3 so that the wind speed drops rapidly, or The shape was designed to minimize eddy current generation and separation phenomena, which cause vibration and noise caused by sudden changes in direction.
[0003]
However, when the direction of the wind blown out of the blow-out air passage 2 is changed from the horizontal direction to the obliquely downward direction or the vertical direction by using the wind direction plate 3 thus formed, the wind direction plate 3 is rotated. Therefore, the angle on the upstream side of the wind direction control plate 3 that has been adjusted to the blow angle of the wind path does not match the blow angle of the wind path by this rotation as shown in FIG. Since it collides violently with the surface of the wind direction control plate 3 and the flow velocity changes abruptly, or the direction of the wind changes abruptly, the streamline resistance increases and the air volume decreases, or the surface or Vibration and noise have been caused by the eddy current or separation phenomenon generated due to the negative pressure phenomenon on the back surface.
[0004]
As described above, in the conventional wind direction control device, when the wind direction is changed from the horizontal direction to the vertical direction, the wind direction plate 3 is rotated by 90 degrees in the vertical direction to change the wind direction. The downstream side of the wind direction plate 3 is changed from horizontal to vertical, and the air is blown downward. However, at this time, the upstream side of the wind direction control plate 3 adjusted to the angle θ ₁ of the blow air path 2 also rotates 90 degrees. As a result, as shown in FIG. 12, the upstream side of the wind direction control plate 3 which has been adjusted to the angle θ ₁ of the blow-out air path is no longer aligned with the blow-out air path angle θ ₁ by 90 degrees, and only as much as the amount of no longer fit. When the wind violently collides with the surface of the wind direction control plate 3, the streamline resistance increases, or a negative pressure phenomenon occurs on the surface or the back surface, and the negative pressure phenomenon causes a vortex or a separation phenomenon, and the air volume decreases. Noise or vibration / noise I was walking.
[0005]
Moreover, even when changing diagonally the direction of the wind from the horizontal direction, similarly, by the amount of rotated from the horizontal direction in an oblique direction, the upstream side of the air direction control plate 3 is no longer match the angle theta ₁ of the air passage, streamlines The resistance has increased, and a vortex or a separation phenomenon has occurred, causing vibration and noise, or reducing the air volume.
[0006]
[Problems to be solved by the invention]
As described above, in the conventional wind direction control device, when the direction of the wind in the vertical direction is changed by the wind direction plate, the flow velocity changes rapidly, the streamline resistance increases, and the air volume decreases, or There is a problem that vibration and noise increase due to eddy current or separation phenomenon generated due to the negative pressure phenomenon on the surface or the back surface.
[0007]
The present invention has been made in order to solve such a problem, and suppresses a decrease in airflow and an increase in vibration and noise while suppressing streamline resistance even when the direction of air blown out from an air path is changed in the vertical direction. It is an object to obtain a wind direction control device and an air conditioner using the same.
[0008]
[Means for Solving the Problems]
In the wind direction control device and the air conditioner using the same according to the present invention,
In a wind direction control device provided in an air passage and having a wind direction plate for changing a vertical direction of an air flow blown out from the air passage, the wind direction plate comprises a plurality of wind direction plates substantially in a row, The direction of the air flow is gradually changed to the target direction by controlling the vertical inclination angle of each wind direction plate.
[0009]
In addition, when the direction of the airflow is changed to the target direction, when the target direction is larger than the inclination angle of the air path, the inclination angle of each airflow direction plate is set to the inclination angle of the airflow. It is controlled so that the upstream side becomes smaller.
[0010]
In addition, when the direction of the airflow is changed to a target direction, when the target direction is smaller than the inclination angle of the air path, the inclination angle of each airflow direction plate is set to the inclination angle of the airflow. It is controlled so that the upstream side becomes larger.
[0011]
Further, the one row of wind direction plates is constituted by three or more wind direction plates.
[0012]
A gap is provided between each row of the wind direction plates, and the air flow of the upstream wind direction plate is bypassed to the opposite side of the downstream wind direction plate.
[0013]
In addition, an upward suppression wind direction plate is provided between each of the row-shaped wind direction plates and an upper side wall surface of the air passage, and the flow of air above the wind path is formed by each of the row-shaped wind direction plates. The control is performed so as to substantially follow the flow of the air flow.
[0014]
The indoor unit of the air conditioner is equipped with the wind direction control device according to any one of the first to sixth aspects.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1 FIG.
The first embodiment will be described with reference to FIGS.
In these figures, 1 is an indoor unit such as an air conditioner, 2 is provided in the indoor unit, and an air outlet for blowing air such as cold air or warm air is provided in the air outlet 2. A wind direction plate 4 for controlling the vertical direction of the wind such as cold air or warm air blown out of the air path, 4 is provided in the air flow path 2 and a left and right wind direction plate for controlling the left and right blow directions, and 5 is a wind direction plate for these. Driving devices (not shown) for driving the operations of 3 and 4 are provided in the indoor unit 1, a heat exchanger for cooling or warming the air, and 7 is provided in the air passage 2 to remove the air. The blower 8 for blowing air is provided in the cabinet 1a of the indoor unit 1 and is a suction port for sucking air.
[0016]
The wind direction plate 3 is substantially the same as the upstream wind direction plate 3b and the downstream wind direction plate 3a, and the upstream wind direction plate 3b or the downstream wind direction plate 3a is rotationally driven by the drive device 5 via the respective shafts 9b and 9a. Configuration.
[0017]
Next, the operation of the wind direction control device thus configured will be described.
First, when the air discharged from the outlet air passage 2 so blown by the wind direction plate 3 in the horizontal direction, in roughly a horizontal downstream louvers 3a that determines the outlet angle theta ₂ in the drive device 5 In addition, the angle θ ₃ of the upstream wind direction plate 3b is made smaller than the blow angle θ _{1 of} the blow air passage, and the air blown out from the blow air passage 2 is gradually horizontally oriented mainly by the upstream wind direction plate 3b. While changing the direction, the air is gently blown to the downstream wind direction plate 3a so as to form a smooth horizontal flow.
[0018]
In other words, the air gradually changing the orientation of the wind in the horizontal direction by blowing angle theta ₁ upstream louvers 3b which is tilted to the following blowout air passage, to form a smooth flow, is blown from the blow-out air duct 2 Violently hits the upstream and downstream wind direction plates 3a, while suppressing the air volume from decreasing, or increasing the vibration and noise due to the vortex or separation phenomenon generated due to the negative pressure phenomenon on the surface or the back surface. Shed.
[0019]
At this time, if the downstream wind direction plate 3a is slightly inclined from horizontal, the collision force against the downstream wind direction plate 3a is further reduced, so that a smoother flow of the wind is formed. Further, noise is suppressed by preventing a decrease in air volume.
[0020]
Next, when the air blown from the blow-out air passage 2 is to be blown vertically downward, as shown in FIG. ), The angle θ ₃ of the upstream wind direction plate 3b is set to be larger than the blow angle θ _{1 of} the blow air path, and the air blown from the blow air path 2 is gradually changed to the vertical direction by the upstream wind direction plate 3b to smoothly. So as to form a smooth flow.
[0021]
In other words, so as to form a smooth flow varied by the upstream louvers 3b which is tilted to the blow-out angle theta ₁ or more outlet air passage gradually to vertical orientation of the wind, blowing air violently upstream and downstream When the air flow is directed to the wind direction plate 3a, the air flow is reduced and the vibration / noise is prevented from increasing due to a vortex or a separation phenomenon generated due to a Coanda phenomenon or a negative pressure phenomenon on the surface or the back surface. become.
[0022]
At this time, if the downstream wind direction plate 3a is inclined slightly more horizontally than substantially vertically, the collision force against the downstream wind direction plate 3a is further reduced, so that the flow of the wind in the vertical direction is smoother. As a result, the airflow is prevented from lowering and noise is suppressed.
[0023]
Then, when the flow of air blown in an oblique direction, and the inclination angle theta ₂ to be the downstream louvers 3a in its oblique direction by the drive unit 5, the outlet air path angle theta ₃ of the upstream louvers 3b made to be approximately half of the angle between the outlet angle theta ₁ and the inclination angle theta ₂ of the.
In this case, the air blown out from the blowing air path 2 flows along the upstream wind direction plate 3b and the downstream wind direction plate 3a, and is smoothly blown while being gradually changed to the target inclination angle. Therefore, the flow is such that the noise is suppressed by preventing a decrease in the air volume.
[0024]
Further, at this time, when as angled slightly target tilt angle than the blowout angle theta ₁ of the outlet air duct downstream louvers 3a, further, since to form a flow of smooth wind, further, the air volume reduction And noise is suppressed.
[0025]
As described above, the wind direction plate 3 is divided into the upstream wind direction plate 3b and the downstream wind direction plate 3a along the flow of air, and the angle of inclination of the divided upstream wind direction plate 3b and downstream wind direction plate 3a is blown out. The air flow is controlled in accordance with the air blowing direction (angle) with respect to the blowing angle θ ₁ of the air path, so that the air flow is changed. Is changed so as to smoothly reach the target blowing angle, so that a wind direction control device that controls the vertical wind direction with small air volume reduction and quiet sound can be obtained.
[0026]
Embodiment 2 FIG.
Second Embodiment A second embodiment of the present invention will be described with reference to FIGS.
In the second embodiment, the wind direction plate 3 of the first embodiment is divided into three or more divided along the flow of air, for blowing the angle theta ₁ of the outlet air passage to the inclined angle of each louver that this division The air flow is adjusted in accordance with the direction (angle) of air blowing to change the air flow.
The other configuration is almost the same as that of the first embodiment, and a detailed description is omitted.
[0027]
Next, the operation of the thus configured wind direction control plate will be described.
First, when the air blown from the blow-out air passage 2 is blown out in the horizontal direction by the wind direction plate 3, the driving device 5 makes the wind direction plate 3a on the most downstream side substantially horizontal, and the upstream side thereof As shown in FIG. 6, a smooth horizontal flow is formed as shown in FIG. 6 so that the angles θ _3, θ ₄ of the divided wind direction plates 3b, 3c satisfy θ ₁ ≧ θ ₄ ≧ θ ₃ ≧ θ ₂ . In addition, a reduction in air volume, vibration and noise due to eddy current or separation phenomenon is suppressed.
[0028]
At this time, the wind direction plate 3a of the most downstream side at an angle from the horizontal direction, the sum of each louver including a wind direction plate 3a on the most downstream side was the obliquely blowout angle theta ₁ or more outlet air passage In such a case, the air flows more smoothly, so that the reduction of the air volume and the vibration / noise due to the eddy current or the separation phenomenon are further suppressed.
Moreover, at this time, the wind direction plates 3a, 3b, equally share the inclination angle theta ₁ of the air passage at 3c, _{i.e., θ 4 = 3 / 4θ 1} , θ 3 = 2 / 4θ 1, θ 2 = 1 / 4θ _{When it is set to 1} , since it can be changed more gently, it becomes possible to further suppress a decrease in air volume and vibration / noise.
[0029]
Also, when air is blown out in other oblique directions or vertical directions, as shown in FIG. 7, in the same way as described above, the angle configuration of each divided wind direction plate is used to cause eddy current or separation phenomenon. Suppress air volume reduction and vibration / noise.
That is, the angle θ ₂ of the wind direction plate 3a on the most downstream side is set as the target blowing angle, and the angles of the other divided wind direction plates are set so that θ ₁ ≦ θ ₄ ≦ θ ₃ ≦ θ ₂ . As shown in (2), the flow is made to flow smoothly by gradually inclining.
[0030]
As described above, the wind direction plate 3 is divided into three or more along the flow of the air, and the angle of inclination of each of the divided wind direction plates is defined as the air blowing direction (angle) with respect to the blowing angle θ ₁ of the blowing air path. The air flow is changed according to the air flow, so that the air flow from the blow-out air passage is changed smoothly to the target blow angle while suppressing the increase in streamline resistance due to the wind direction plate. As a result, a wind direction control device that controls the flow of air in the vertical direction with less air flow and quieter sound can be obtained.
[0031]
Embodiment 3 FIG.
Third Embodiment A third embodiment of the present invention will be described with reference to FIGS.
In the third embodiment, as shown in these figures, an upward suppression wind direction plate 10 is provided above the wind direction plate 3 in the first or second embodiment, and the flow of air above the wind path is controlled by the wind direction plate 3. Is suppressed so as to be almost the same as the flow of the air formed by the air flow.
Note that other configurations are almost the same as those of the first or second embodiment, and a detailed description thereof will be omitted.
[0032]
Next, the operation thus configured will be described.
First, when the upward suppression wind direction plate 10 is not provided, the air blown out of the air path is smoothly blown out by the wind direction plate 3 described in the first or second embodiment, but as shown in FIG. Since the air on the upper side of the passage 2 flows along the upper side wall surface 2a of the air passage 2, when the shape of the upper side wall surface does not match the shape of the wind direction plate 3, the flow becomes turbulent. Therefore, a vortex is generated on the upper side wall surface, which causes noise and a decrease in air volume.
[0033]
In addition, when the upward suppression wind direction plate 10 is not provided, most of the air above the wind direction plate 3 is not blown downward at the time of vertical downward blowing as shown in FIG. Since the air is blown obliquely along the slope of the wall surface 2a, and at the time of horizontal blowing, most of the air below the wind direction plate 3 is blown downward without blowing in the horizontal direction. Although the suppression of the line resistance can be achieved, a loss occurs in the target direction.
[0034]
Therefore, as shown in FIGS. 8 and 9, the wind direction of the wind direction plate 3 (horizontal or horizontal) is located above the wind direction plate 3, that is, near the wall surface between the wind direction plate 3 and the upper side wall surface 2 a of the blow-out air passage 2. The airflow control plate 10 is provided with an upward suppression wind direction plate 10 that moves in conjunction with the vertical direction), and suppresses the flow of air on the upper side of the air path to be substantially the same as the flow of air formed by the wind direction plate 3.
[0035]
In this case, most of the air blown out from the blow-out air passage 2 becomes substantially the same as the flow of the air formed by the wind direction plate 3, and the streamline resistance of the wind to the wind direction plate 3 is suppressed, so that the target direction is reduced. As a result, a wind direction control device that controls the vertical wind direction with less noise and less noise can be obtained.
[0036]
Embodiment 4 FIG.
In the fourth embodiment, a gap is provided between the plurality of wind direction plates, and the air flow of the upstream wind direction plate is bypassed to the opposite side of the downstream wind direction plate by the gap. It was done.
Note that other configurations are almost the same as those of the other embodiments, and a detailed description thereof will be omitted.
[0037]
Next, this operation will be described with reference to FIG.
First, the air blown out from the blowing air passage 2 flows along the wind direction plate 3. At this time, as shown in FIG. 3 or FIG. 4, the air flowing on the lower surface side of the wind direction plate 3 is blown out at the inclination angle of the blow-out air passage 2, so that the lower surface side becomes negative pressure, vortex is generated and noise Etc. will occur.
[0038]
However, at this time, as shown in FIG. 10, the airflow of the upstream wind direction plate flows from the gap 3d provided between the wind direction plates to the opposite side of the downstream wind direction plate, and acts to eliminate the negative pressure. Therefore, noise and the like are eliminated.
[0039]
In addition, when the wind direction plate 3 of the wind direction control device configured as described above is used for the blow air path of an indoor unit of an air conditioner that blows cool air, the wind direction plate 3 in the blow air path cooled by the cool air is used. Prevents intrusion of high-temperature and high-humidity indoor air into the negative pressure vortex generated on the back surface (lower surface) and facilitates contact with high-temperature and high-humidity indoor air. As a result, it is possible to prevent the dew condensation water from falling into the room due to the dew condensation phenomenon of the wind direction plate 3.
[0040]
【The invention's effect】
As described above, according to the present invention, in the wind direction control device having the wind direction plate provided in the wind path and changing the vertical direction of the airflow blown out from the wind path, the wind direction plates are substantially aligned with each other. It is composed of a plurality of wind direction plates, and the direction of the air flow is gradually changed to the target direction by controlling the vertical inclination angle of each row of the wind direction plates, so that the stream line resistance is suppressed. Since the vertical direction of the air blown from the air path is changed, a wind direction control device that suppresses a decrease in air volume and vibration and noise can be obtained.
[0041]
In addition, when the direction of the airflow is changed to the target direction, when the target direction is larger than the inclination angle of the air path, the inclination angle of each airflow direction plate is set to the inclination angle of the airflow. Since the upstream side is controlled to be smaller, the direction of the airflow blown out of the air path is gradually increased from the upstream side to the downstream side, so that the direction of the air flow is changed to the target direction. Even if the direction is changed to a direction larger than the inclination angle, a stream direction resistance can be suppressed, and a wind direction control device can be obtained which suppresses a decrease in air volume and vibration and noise.
[0042]
In addition, when the direction of the airflow is changed to a target direction, when the target direction is smaller than the inclination angle of the air path, the inclination angle of each airflow direction plate is set to the inclination angle of the airflow. Since the upstream side is controlled to be larger, the direction of the airflow blown out of the air path is gradually reduced from the upstream side to the downstream side, so that the direction of the air flow is changed to the target direction. Even if the direction is changed to a direction smaller than the inclination angle, the wind direction control device can be obtained in which the streamline resistance is suppressed and the decrease in the air volume and the vibration / noise are suppressed.
[0043]
In addition, since the one row of wind direction plates is composed of three or more wind direction plates, the direction of the air blown out from the air path is gradually changed, so that the streamline resistance is suppressed. It is possible to obtain a wind direction control device that suppresses a decrease in air volume and vibration and noise.
[0044]
In addition, a gap is provided between each row of the wind direction plates, and the air flow of the upstream wind direction plate is bypassed to the opposite side of the downstream wind direction plate. Since the air flows to the opposite side of the side wind direction plate and acts to eliminate the negative pressure, a wind direction control device that further eliminates noise and the like is obtained.
[0045]
In addition, an upward suppression wind direction plate is provided between each of the row-shaped wind direction plates and an upper side wall surface of the air passage, and the flow of air above the wind path is formed by each of the row-shaped wind direction plates. Since the airflow is controlled to follow the flow of the airflow, the air above the air path is almost the same as the airflow formed by the airflow direction plate, and the streamline resistance of most of the airflow is suppressed and the airflow in the target direction is suppressed. Since the air is blown out, a more excellent air volume reduction is obtained, and a wind direction control device with quiet sound can be obtained.
[0046]
In addition, since the indoor unit of the air conditioner is equipped with the wind direction control device according to any one of claims 1 to 6, the air volume is small and the sound is quiet. A highly reliable air conditioner that prevents high-temperature and high-humidity indoor air from entering the negative pressure part generated on the lower surface) and the back surface of the most downstream wind direction plate, preventing the condensation water from falling into the room Can be
[Brief description of the drawings]
FIG. 1 is a schematic installation configuration diagram of an indoor unit of an air conditioner according to the present invention.
FIG. 2 is a schematic vertical sectional view of an indoor unit of the air conditioner according to the present invention.
FIG. 3 is a diagram in which a wind direction control device according to Embodiment 1 of the present invention controls a flow of air in a horizontal direction.
FIG. 4 is a diagram in which a wind direction control device according to Embodiment 1 of the present invention controls the flow of air in a vertical direction.
FIG. 5 is a diagram in which a wind direction control device according to Embodiment 1 of the present invention controls the flow of air in an oblique direction.
FIG. 6 is a diagram in which a wind direction control device according to Embodiment 2 of the present invention controls the flow of air in a horizontal direction.
FIG. 7 is a diagram in which a wind direction control device according to Embodiment 2 of the present invention controls a flow of air in a vertical direction.
FIG. 8 is a diagram in which a wind direction control device according to Embodiment 3 of the present invention controls the flow of air in a horizontal direction.
FIG. 9 is a diagram in which a wind direction control device according to Embodiment 3 of the present invention controls air flow in a vertical direction. FIG. 10 is a diagram in which a wind direction control device according to Embodiment 4 of the present invention controls air flow in a horizontal direction. FIG.
FIG. 11 is a view for controlling an airflow in a conventional wind direction control device in a horizontal direction.
FIG. 12 is a control diagram for making an air flow in a vertical direction in a conventional wind direction control device.
FIG. 13 is a diagram for controlling an air flow in an oblique direction in a conventional wind direction control device.
[Explanation of symbols]
Reference Signs List 1 indoor unit of air conditioner, 1a cabinet, 2 outlet air path, 2a upper side wall surface, 2b lower side wall surface, 2c outlet, 3 vertical wind direction plate, 3a downstream wind direction plate, 3b, 3c upstream wind direction plate, 4 Left and right wind direction board, 5 drive device, 6 heat exchanger, 7 blower, 8 suction port, 10 upper restraint wind direction board,
14 Streamline 15 Eddy current.

Claims (7)

In a wind direction control device provided in an air passage and having a wind direction plate for changing a vertical direction of an air flow blown out from the air passage, the wind direction plate includes a plurality of wind direction plates substantially in a row, Wherein the direction of the airflow is gradually changed to a target direction by controlling the vertical inclination angle of each wind direction plate. When the direction of the airflow is changed to a target direction, when the target direction is larger than the inclination angle of the air passage, the inclination angle of each airflow direction plate is set to the upstream side of the airflow. The wind direction control device according to claim 1, wherein the wind direction control device is controlled to be smaller as the wind direction becomes smaller. When the direction of the airflow is changed to the target direction, when the target direction is smaller than the inclination angle of the air path, the inclination angle of each airflow direction plate is set to the upstream side of the airflow. The wind direction control device according to claim 1, wherein the wind direction control device is controlled so as to be larger as the wind direction is larger. The wind direction control device according to any one of claims 1 to 3, wherein the one row of wind direction plates includes three or more wind direction plates. A gap is provided between each row of the wind direction plates, and the airflow of the upstream wind direction plate is bypassed to the opposite side of the downstream wind direction plate. The wind direction control device according to item 1. The air flow in which an upward restraining wind direction plate is provided between each of the row-shaped wind direction plates and an upper side wall surface of the air passage, and the flow of air above the wind path is formed by each of the row-shaped wind direction plates. The wind direction control device according to any one of claims 1 to 5, wherein control is performed so as to substantially follow the flow of the wind. An air conditioner, wherein an indoor unit of the air conditioner is equipped with the wind direction control device according to any one of claims 1 to 6.

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