JP3171786B2 - Air conditioner indoor unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor unit of an air conditioner having a plurality of upper and lower wind direction plates for changing the upper and lower blowing directions of conditioned air.

[0002]

2. Description of the Related Art An indoor unit of a conventional air conditioner shown in FIG. 9 has a front panel 3, an outlet 1 provided at the front lower side of the front panel 3 for blowing conditioned air into a room, and Blow-off passage 2 for flowing conditioned air forward and downward toward blow-out port 1
And The air outlet 1 has a vertical louver 120 that is rotatable around a rotation axis C1 to change the vertical blowing direction of the conditioned air, and is rotatable about a rotation axis C2. Are provided.

[0003] By the way, an indoor unit of an air conditioner is required to have not only high performance but also beautiful appearance. In particular, recently, when the operation of the air conditioner is stopped, that is, the upper and lower wind direction plates close the outlet 1. When in the position, a design is desired in which the upper and lower wind direction boards can be seen as if they were integrated with the front panel. For this reason, the upper and lower wind direction plates 120, 130
Is designed to have a cross section slightly curved so as to follow the outer shape of the front panel 3 when the air conditioner is stopped in order to maintain the aesthetic appearance of the indoor unit (see the solid line position in FIG. 9).

[0004] Here, the direction of blowing the conditioned air of the indoor unit is generally forward in cooling, and generally downward in heating. However, it can be set to an arbitrary blowing direction according to the user's preference and the like. It has become. When shifting from the stopped state to the operating state, the upper and lower wind direction plates 120 and 130 of the indoor unit are in only one direction (counterclockwise in FIG. 9) with respect to the stop position (solid line position in FIG. 9). When the air-conditioning air is directed substantially horizontally, the air-conditioned air is blown forward from the air outlet 1, and when the air-conditioning air is directed substantially vertically, the air-conditioned air is blown downward from the air outlet 1. It has become.

However, in order to obtain better blowing characteristics, it has been considered that the upper and lower wind direction plates can be rotated in both directions with reference to a stop position.

For example, the front vertical wind direction plate 130 is rotatable counterclockwise from a stop position to a predetermined angle, and the rear vertical wind direction plate 120 is rotated clockwise and counterclockwise from the stop position by a predetermined angle. When the air is blown forward, the upper and lower wind direction plates 120, 1
30 is rotated counterclockwise, and both upper and lower wind direction plates 120, 1
When the air blower 30 is directed substantially horizontally (see the solid line position in FIG. 10) and blows in a direction directly below, the rear vertical wind direction plate 120 is rotated clockwise from the stop position, and the front vertical wind direction plate 13 is rotated.
By rotating 0 large clockwise (see the position indicated by the two-dot chain line in FIG. 10), good blowing characteristics can be obtained in both upper and lower blowing directions.

However, the upper and lower wind direction plates 13 located at the rear
If 0 can be rotated clockwise and counterclockwise from the stop position by a predetermined angle, there occurs an area where both wind direction plates 120 and 130 collide during the rotation as shown in area A in FIG.

For this reason, when a structure as shown in FIG. 9 is adopted, when one of the upper and lower wind direction plates 120 or 130 is in a state outside the area A, the other upper or lower wind direction plate 120 or 130 is disposed. Must be turned.
Therefore, when the rotation of the upper and lower wind direction plates 120 and 130 is controlled by motors, it is necessary to control the rotation while confirming the positional relationship between the two upper and lower wind direction plates 120 and 130. Was extremely complicated. In addition, the user manually operates the upper and lower wind direction plates 12.
In the case where 0, 130 is rotated, the upper and lower wind direction plates 120 and 130 collide with each other, and the upper and lower wind direction plates 120, 13
0 and its support may be damaged.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of such a point, and is provided with a plurality of vertical wind direction plates, and at least one of the plurality of vertical wind direction plates closes an air outlet. Even in an air conditioner that rotates both clockwise and counterclockwise based on the position, both upper and lower wind panels can rotate freely without colliding with each other without using complicated control. The purpose is to make it possible. It is another object of the present invention to improve the appearance of the indoor unit when the indoor unit is stopped.

[0010]

The first means is an indoor unit of an air conditioner, comprising: a front panel; an outlet provided at a lower front portion of the front panel for blowing conditioned air into the room; An air outlet passage for flowing the air-conditioned air forward and downward toward the air outlet; and an air outlet provided in the air outlet, the air-conditioning air being rotatable about a rotation axis to change the upper and lower air blowing directions. A plurality of upper and lower wind panels,
At least one of the upper and lower wind direction plates comprises a plurality of upper and lower wind direction plates rotatable clockwise and counterclockwise from a position at which the outlet is closed, and the plurality of upper and lower wind direction plates is at a position at which the outlet is closed. In some cases, a gap is formed between the adjacent upper and lower wind direction plates so that the rotation trajectories of the upper and lower wind direction plates can rotate without intersecting.

According to the first means, a gap is formed between the upper and lower wind direction plates adjacent to each other so that the rotation trajectories of the respective upper and lower wind direction plates are rotatable without intersecting. The upper and lower wind direction plates can be freely rotated clockwise or counterclockwise with reference to the position where the outlet is closed. For this reason, an indoor unit having better blowing characteristics can be easily obtained.

[0012] The second means is that, when the plurality of vertical wind direction plates are located at positions closing the air outlet, a rear end edge of a front vertical wind direction plate among adjacent vertical wind direction plates is a rear vertical wind direction. It is characterized by being located below the front edge of the plate.

[0013] According to the second means, when the upper and lower wind direction plates are at the position where the air outlet is closed, and when the indoor unit is viewed from substantially the front, the gap formed between the upper and lower wind direction plates and the upper and lower wind direction plates. Can not be visually confirmed, so that an indoor unit with a beautiful appearance can be obtained.

[0014] A third means is that the frontmost one of the plurality of upper and lower wind direction plates rotates only in one direction with reference to a position at which the outlet is closed, and The vertical wind direction plate located rearward of the frontmost vertical wind direction plate is characterized by rotating in both directions with reference to the position at which the outlet is closed.

According to the third means, the foremost vertical wind direction plate out of the plurality of vertical wind direction plates rotates only in one direction with reference to the position at which the outlet is closed, so that it rotates in both directions. In comparison with the above, the foremost vertical wind direction plates can be arranged closer to the periphery of the outlet. For this reason, it is possible to set a small gap between the frontmost vertical wind direction plate and the front panel. For this reason, an indoor unit with a more beautiful appearance can be obtained. Further, since the rear upper and lower wind direction plates are closer to the blower, the influence on the wind direction of the blown wind is large, and the front vertical direction plate has little effect on the wind direction. For this reason, even if the rotation of the front vertical wind direction plate is limited to only one direction, the wind direction of the blown wind can be efficiently controlled by rotating the rear vertical wind direction plate in both directions.

The fourth means is that, when the plurality of upper and lower wind direction plates are located at positions closing the air outlets, the outer surface of the upper and lower air direction plates is a virtual cross-section of the outer surface of the front panel on the periphery of the air outlets. The feature is that it does not almost follow the extension surface.

According to the fourth means, when the upper and lower wind direction boards are at the position closing the air outlet, the upper and lower wind direction boards follow the outer shape of the front panel, so that the aesthetic appearance of the indoor unit can be further improved.

The fifth means is that, when the plurality of vertical wind direction plates are located at positions closing the air outlets, the upper and lower wind direction plates adjacent to the front upper edge of the air outlet and the peripheral edge of the air outlet in a cross section. And no gap is formed between them.

According to the fifth means, when the plurality of vertical wind direction plates are located at positions closing the air outlets, and when the indoor unit is viewed from substantially the front, a gap between the vertical wind direction plates and the front panel is provided. Can not be confirmed, so that the aesthetic appearance of the indoor unit can be further improved.

The sixth means is characterized in that the upper end side of the rear upper and lower wind direction plates is bent toward the rotation shaft in a cross section.

According to the sixth means, the interval between the upper and lower wind direction plates can be substantially widened by bending the upper and lower wind direction plates. For this reason, just before the air conditioner stopped,
Alternatively, as in the case immediately after the start of operation, when the vertical wind direction plate is in the stop position, that is, near the position where the air outlet is closed, and the indoor fan is in the operating state or not completely stopped, the conditioned air flows in the vertical wind direction. It is possible to prevent a surge phenomenon of a blowout flow generated by being dammed by the plate. Therefore, generation of noise due to the surging phenomenon can be prevented.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment An embodiment of the present invention will be described below with reference to the drawings. First, a first embodiment will be described. FIGS. 1, 2, 6 to 8 are views showing a first embodiment of the present invention.

As shown in FIGS. 6 and 7, the indoor unit of the air conditioner mounted on the upper wall surface of the room is provided at the front panel 3 and at the lower front portion of the front panel 3, so that the room has conditioned air (cooling). An air outlet 1 for blowing out air, dehumidified air, heating air, etc.), and an air outlet passage 2 through which the conditioned air flows forward and downward toward the air outlet 1. Outlet passage 2
Is sandwiched between the front wall 2a and the rear wall 2b in the cross section. Further, a suction port 4 for room air is formed on the front surface of the front panel 3, and a suction port 5 for room air is also formed on the upper surface of the front panel 3.

As shown in FIG. 7, inside the front panel 3, a first heat exchanger 6a corresponding to the suction port 4 and a second heat exchanger 6b corresponding to the suction port 5 are provided. An indoor heat exchanger 6 is provided. An auxiliary indoor heat exchanger (supercooling heat exchanger) 7 is provided between the suction port 5 and the second heat exchanger 6b. Further, inside the main indoor heat exchanger 6 (between the first heat exchanger 6a and the second heat exchanger 6b), a horizontal flow type indoor fan 8 is provided. In addition, what is shown by the code | symbol 9 in FIG. 7 is the left-right wind direction board provided in the upstream of the up-down wind direction board 10, and changing the left-right blowing direction of conditioned air.

The indoor unit sucks indoor air from the suction ports 4 and 5 by the rotation of the indoor fan 8. The indoor air sucked from the inlet 4 flows through the first heat exchanger 6a to the outlet passage 2, and the indoor air sucked from the inlet 5 is supplied to the auxiliary indoor heat exchanger 7 and the second heat exchanger. 6a and to the outlet passage 2.

Further, the indoor unit of the air conditioner has an outlet 1
And two upper and lower wind direction plates 20 and 30 rotatable about rotation axes C1 and C2 parallel to each other. The upper and lower wind direction plates 20 located on the rear wall 2b side of the blowout passage 2 have both ends curved in the cross section toward the rotation axis C1. The upper and lower wind direction plates 30 located on the side of the front wall 2a of the outlet passage 2 also have both ends curved in the cross section toward the rotation axis C2. The upper and lower wind direction plates 20, 30 are independently driven by upper and lower wind direction motors M1, M2 shown in FIG. Furthermore, the upper and lower upper and lower wind direction plates 20, 30
Can be rotated by the user manually pushing the upper and lower wind direction plates 20, 30.

As shown in FIG. 7, in the blow-out passage 2, upper and lower wind direction plates 20, 30 are provided with their rotation axes C1, C2.
Support member 1 for supporting in the middle part in the direction
5 are provided. The support member 15 has a base 16 having both ends supported by a front wall 2a and a rear wall 2b, respectively.
And the support portion 1 extending forward and downward from substantially the center of the base portion 16.
7 and a support portion 18 extending downward from the front wall 2a side of the base portion 16. Mounting plates 25, 35 are provided on the rotation axes C1, C2 side of the upper and lower wind direction plates 20, 30, respectively, corresponding to the support portions 17, 18 of the support member 15, respectively.
The ends of the mounting plates 25 and 35 and the ends of the support portions 17 and 18 of the support member 15 are rotatably connected at the positions of the rotation axes C1 and C2, respectively.

The rotation axis C1 is connected to the inner surface 21 of the vertical wind direction plate 20.
Side, and is displaced in the thickness direction with respect to the vertical wind direction plate 20. As shown in FIG. 2, the vertical wind direction plate 20 provided with such a positional relationship with the rotation axis C1 is at a stop position (solid line position in FIG. 2), that is, the vertical wind direction plate 2
0 rotates in both the clockwise direction and the counterclockwise direction in FIG. 2 with reference to the position where the air outlet 1 is closed (see the position indicated by the two-dot chain line in FIG. 2).

The rotation axis C2 is located on the inner surface 31 side of the vertical wind direction plate 30, and is shifted in the thickness direction with respect to the vertical wind direction plate 30. The vertical wind direction plate 30 provided in such a positional relationship with the rotation axis C2 is counterclockwise with respect to the stop position (see the solid line position in FIG. 2), that is, the position where the vertical wind direction plate 30 closes the outlet 1. It only rotates (see the position indicated by the two-dot chain line in FIG. 2).

Hereinafter, referring to FIG.
The method of arranging the upper and lower wind direction boards 20 and 30 and the positional relationship between the upper and lower wind direction boards 30 will be described in detail. FIG. 1 schematically shows the lower part of FIG. 6, and parts that are not directly related to the main parts of the present invention are simplified or omitted for simplification of the drawing (hereinafter, FIGS. The same applies to FIG. 6).

FIG. 1 shows a vertical wind direction plate 20, which has been rotated during operation (see the position indicated by the two-dot chain line in FIG. 2) as shown in FIG.
Reference numeral 30 denotes a state in which the air outlet 3 has returned to a position (see the solid line position in FIG. 2, hereinafter referred to as a "stop position") at the end of the operation (hereinafter referred to as "stop").

That is, when an operation stop command is input from a remote controller or the like, the drive motor M
After moving to the stop position, a signal is output to 1 and M2 to stop. The control circuit detects the position of the upper and lower wind direction boards, and controls the operation of the drive motors M1 and M2 based on the detected position. Thereby, the upper and lower wind direction plates 20 and 30 are moved and fixed at arbitrary positions according to the operation mode and the operation condition. In the present embodiment, the vertical wind direction plate 20 is rotatable clockwise and counterclockwise from the stop position, and the vertical wind direction plate 30 is configured to be rotatable only in one direction from the stop position.

When the upper and lower wind panels 20 and 30 are at the stop position, as shown in FIG.
A predetermined gap x is formed in the front-rear direction between the gap x and the zero. The gap x is defined by the vertical wind direction plate 20 and the vertical wind direction plate 30
Is set to a value as small as possible within a range where the vertical wind direction plate 20 and the vertical wind direction plate 30 do not collide with each other. Since the gap x is set in this manner, the upper and lower wind direction plates 20 and 30 can rotate as shown in FIG.

A predetermined gap y is formed between the upper and lower wind direction plates 20 and the rear wall 2b of the outlet passage 2. Gap y
Is set to a value as small as possible within a range where the vertical wind direction plate 20 does not collide with the rear wall 2b of the blowing passage 2 when the vertical wind direction plate 20 is rotated. This gap y is a vertical wind direction plate 2
Depending on the shape of 0, 30 and the mounting structure, it can be made extremely small. However, when it is set to 0, the vertical y-direction plate 20 cannot rotate, so that the gap y cannot be set to 0.

Also, as shown in FIG.
When stopped, the outer surface 32 substantially conforms to a virtual extension surface of the outer surface of the front panel 3 on the periphery of the outlet 1. That is, the outer surface 32 of the vertical wind direction plate 30 is curved so as to substantially follow the shape of a virtual extension surface S1 (indicated by a two-dot chain line in FIG. 1) obtained by extending the front outer surface 3a of the front panel 3 while maintaining its curvature. The outer surface 32 coincides with the virtual extension surface S1 when stopped.

No gap is provided between the vertical wind direction plate 30 and the front wall 2a of the outlet passage 2, and the front edge 33 of the vertical wind direction plate 30 and the front wall 2a are substantially in contact with each other. I have. That is, the front edge 33 of the vertical wind direction plate 30 is substantially in contact with the peripheral edge on the front of the outlet 1. This is because there is no need to provide an interval since the vertical wind direction plate 30 rotates only counterclockwise with respect to the stop position.

Also, as shown in FIG.
The vertical wind direction plate 20 which is relatively rear of 0 and 30, that is, the vertical wind direction plate 20 has its front edge 21 bent toward the rotation axis C1 and has a substantially "<"-shaped cross-sectional shape. I have.
Further, the rear end edge 24 side of the outer surface 22 of the vertical wind direction plate 20 substantially conforms to a virtual extension surface of the outer surface of the front panel 3 on the peripheral edge of the outlet 1 when stopped. That is, the rear end edge 24 side of the outer surface 22 of the vertical wind direction plate 20 is a virtual extension surface S that extends the lower outer surface 3b of the front panel 3 while maintaining its curvature.
2 (indicated by a two-dot chain line in FIG. 1), the outer surface 22 coincides with the virtual extension surface S2 when stopped, and a smooth curved surface is drawn.

At the time of stoppage, the upper and lower wind direction plates, ie, the rear end edge 34 of the upper and lower wind direction plates 30, are relatively rearward of the upper and lower wind direction plates, ie, the upper and lower wind direction plates 20. Is located below the front edge 23 of the front end. That is, the vertical wind direction plate 20 and the vertical wind direction plate 30
As shown in FIG. 1, they are arranged so as to overlap with a width e in the vertical direction. For this reason, when the indoor unit is viewed from substantially the front, it is not possible to visually check the gap formed between the vertical wind direction plate 20 and the vertical wind direction plate 30, and therefore, the vertical wind direction plate 20 is stopped at the stop position. Even if it is made to be able to rotate in both clockwise and counterclockwise directions with reference to the above, an indoor unit excellent in appearance can be obtained.

Further, by bending the vertical wind direction plate 20, the distance between the vertical wind direction plate 20 and the vertical wind direction plate 30 is substantially reduced as compared with the case where the vertical wind direction plate 20 is not bent (see FIG. 3). Can be widened. For this reason, just before stopping the air conditioner or immediately after starting operation,
When the vertical wind direction plates 20 and 30 are near the stop position and the indoor fan 8 is in operation or not completely stopped, the blowout flow generated when the conditioned air is blocked by the vertical wind direction plates 20 and 30 Can be prevented. Therefore, generation of noise due to the surging phenomenon can be prevented.

In the above-described first embodiment, the upper and lower airflow direction plates 20 are shown to have a substantially cross-shaped cross section, but the present invention is not limited to this. The shape of the vertical wind direction plate 20 may be changed as shown in FIG. That is, the entire outer surface 22 of the vertical wind direction plate 20 is
The virtual extension surface S2 may be curved so as to follow the shape of the virtual extension surface S2 (indicated by a two-dot chain line in FIG. 3) so that the entire surface of the outer surface 22 of the vertical wind direction plate 20 coincides with the virtual extension surface S2 when stopped. With this configuration, when stopped, the entire outer surface 22 of the vertical wind direction plate 20 and the entire outer surface 30 of the vertical wind direction plate 30 follow the outer shape of the front panel 3, so that the aesthetic appearance of the indoor unit can be further improved.

Further, as shown in FIG.
May be arranged at a position slightly behind the front outer surface 3 a of the front panel 3. Second Embodiment Next, a second embodiment will be described. FIG. 5 is a view showing a second embodiment of the present invention. The second embodiment differs from the first embodiment in the direction of rotation of the upper and lower wind direction plates 30, and is otherwise substantially the same as the first embodiment.
In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

As shown in FIG. 5, the front upper and lower wind direction plates 30 are provided.
Rotates clockwise (see the arrow in FIG. 5) with respect to the stop position (the solid line position in FIG. 5). Also,
At the lower end of the outer surface 3a at the front of the front panel 3, a projection 3c is formed. As shown in FIG. 6, the tip of the convex portion 3c enters inside the rotation trajectory R of the rear edge 34 of the vertical wind direction plate 30, and the vertical wind direction plate 30 reaches the position shown by the two-dot chain line in FIG. When rotated clockwise, it collides with the projection 3c. However, the driving motor M2 does not rotate the vertical wind direction plate 30 until it reaches a position where it collides with the convex portion 3c. Further, the front end edge 33 side of the outer surface 32 of the vertical wind direction plate 30 comes into contact with the inner surface of the convex portion 3c when stopped.

In the second embodiment having such a configuration, the same operation and effect as in the first embodiment can be obtained.

In the first and second embodiments described above, the indoor unit has two upper and lower wind direction plates 20 and 3.
0, but the vertical wind direction plate 2
An additional vertical wind direction plate having the same shape and function as the vertical wind direction plate 20 may be provided between the vertical wind direction plate 20 and the vertical wind direction plate 20 while widening the interval between 0 and 30.
In this case, the rear edge 34 of the vertical wind direction plate 30 is located below the front vertical edge of the rear vertical wind direction plate, that is, the front edge of the additional vertical wind direction plate. What is necessary is just to position it below the front edge 23 of the wind direction board, ie, the up-down direction board 20 ,.

Further, in the first and second embodiments, the upper and lower wind direction plates 20 and 30 are connected to the upper and lower wind direction motors M1 and M1, respectively.
Although the case of driving by M2 has been described, the present invention is not limited to this, and at least one of the vertical wind direction plates 20 and 30 may be manually rotated.

[0046]

As described above, according to the present invention, since the plurality of upper and lower wind direction plates are rotatable without intersecting their turning trajectories, the upper and lower wind direction plates are referenced with respect to the stop position. Can be rotated in any direction.
For this reason, an indoor unit having better blowing characteristics can be obtained. In addition, since there is no possibility that the upper and lower wind direction plates collide with each other, complicated control is not required when the respective upper and lower wind direction plates are rotated by the motor, and even when the user manually operates the upper and lower wind direction plates. There is no possibility that the upper and lower wind direction boards and their supporting portions are damaged.

Further, at the time of stoppage, the rear edge of the front vertical wind direction plate of the vertical wind direction plates adjacent to each other is located below the front edge of the rear vertical wind direction plate.
An indoor unit with a beautiful appearance can be obtained.

[Brief description of the drawings]

FIG. 1 is a diagram showing a cross section of a first embodiment of an indoor unit of an air conditioner according to the present invention.

FIG. 2 is a cross-sectional view showing the operation of the upper and lower wind direction boards in the first embodiment.

FIG. 3 is a cross-sectional view showing a modification of the first embodiment.

FIG. 4 is a cross-sectional view showing a modification of the first embodiment.

FIG. 5 is a diagram showing a cross section of a second embodiment of the indoor unit of the air conditioner according to the present invention.

FIG. 6 is a perspective view showing an appearance of an indoor unit of an air conditioner to which the present invention is applied.

FIG. 7 is a cross-sectional view showing the structure of the indoor unit of the air conditioner to which the present invention is applied.

FIG. 8 is a perspective view showing a state where a front panel of an indoor unit of the air conditioner to which the present invention is applied is removed.

FIG. 9 is a cross-sectional view showing the arrangement and operation of upper and lower wind direction plates of an indoor unit of a conventional air conditioner.

FIG. 10 is a cross-sectional view showing the operation of a vertical wind direction plate of an indoor unit of a conventional air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outlet 2 Outlet passage 3 Front panel 20, 30 Vertical panel 22 Outer surface 23 of vertical panel 20 Front edge 32 of panel 20 External surface 34 of panel 30 ) Trailing edge

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-159790 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 13/14

Claims (6)

(57) [Claims] 1. An indoor unit for an air conditioner, comprising: a front panel; an outlet provided at a lower front part of the front panel for blowing conditioned air into a room; and supplying the conditioned air toward the outlet. A plurality of upper and lower wind direction plates provided at the blow outlet, which are rotatable around a rotation axis in order to change the upper and lower blowing directions of the conditioned air, A plurality of upper and lower wind direction plates that are rotatable clockwise and counterclockwise from a position where one of the upper and lower wind direction plates closes the outlet; and a position where the plurality of upper and lower wind direction plates close the outlet. In some cases, an indoor unit is characterized in that a gap is formed between the upper and lower wind direction boards adjacent to each other so that the rotation trajectories of the upper and lower wind direction boards can rotate without intersecting. 2. When the plurality of upper and lower wind direction plates are at a position closing the air outlet, a rear end edge of a front upper and lower wind direction plate among adjacent vertical wind direction plates is a front end edge of a rear upper and lower wind direction plate. The indoor unit according to claim 1, wherein the indoor unit is located at a lower position. 3. A front most vertical wind direction plate of the plurality of vertical wind direction plates rotates only in one direction with reference to a position at which the outlet is closed, and a frontmost one of the plurality of vertical wind direction plates is provided. The vertical wind direction plate located rearward of the vertical wind direction plate rotates in both directions with reference to a position where the air outlet is closed.
Or the indoor unit according to 2. 4. In a case where the plurality of upper and lower wind direction plates are located at a position to close the air outlet, an outer surface of the upper and lower air direction plate substantially corresponds to a virtual extension surface of an outer surface of a front panel around a periphery of the air outlet in a cross section. 4. The method according to claim 1, wherein
The indoor unit according to any one of the above. 5. In a case where the plurality of vertical wind direction plates are located at a position to close the air outlet, a cross section between a front upper edge of the air outlet and a vertical wind direction plate adjacent to the peripheral edge of the air outlet is provided. The indoor unit according to any one of claims 1 to 4, wherein no gap is formed. 6. The indoor unit according to claim 1, wherein an upper end side of the rear upper and lower wind direction plates is bent toward the rotation shaft in a cross section.