KR100251812B1 - Indoor unit of airconditioner - Google Patents

Abstract

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 up and down wind direction plates for changing the up and down ejection direction of air conditioning air. The indoor unit is installed in the ejection opening (1), to change the ejection direction up and down of the air conditioning air. Each of the two up and down wind direction plates 20 and 30 is rotatable around the rotational shafts C1 and C2, and the top and down wind direction plates 20 are rotated in any direction on the basis of the stop position. When the conditioner stops driving, a gap x is formed between the upper and lower wind direction plates 20 and 30 adjacent to each other, and the gap x crosses the rotation trajectories of the upper and lower wind direction plates 20 and 30. The rear edge 34 of the upper and lower wind direction plates 30 of the upper and lower wind direction plates adjacent to each other is positioned below the front edge 23 of the rear upper and lower wind direction plates 20. It is characterized by.

Description

Indoor unit of air conditioner

The present invention relates to an indoor unit of an air conditioner having a plurality of up and down wind direction plates for changing the up and down blowing direction of air conditioning air.

The indoor unit of the conventional air conditioner shown in FIG. 9 is provided at the front panel 3 and in front of the front panel 3, and has a jet port 1 and a jet port 1 for ejecting air conditioning air into the room. The jet passage 2 which flows air conditioning air downward toward the front side is provided. In addition, the blower port 1 has an up-and-down wind direction plate (louver) 120 freely rotatable about the rotation axis C1 and a up-down wind direction plate 130 freely rotated around the rotation axis C2 in order to change the up-down direction of the air conditioning air. Is installed.

However, the indoor unit of the air conditioner requires not only high performance but also a beautiful appearance. In recent years, when the air conditioner stops operating, i.e., when the upper and lower wind direction plates are in a position to close the jet port 1, the upper and lower wind direction plates are similar to the front panel. A design that can be seen as is desirable. For this reason, the upper and lower wind direction plates 120 and 130 are designed to have a slightly curved cross-sectional shape so as to follow the outer shape of the front panel 3 at the time of stopping the air conditioner in order to maintain the aesthetics of the indoor unit (Fig. 9). Solid line position).

Here, the blowing direction of the air-conditioning air of the indoor unit is set to be substantially forward at the time of cooling and approximately downward at the time of heating, but can be set in any blowing direction according to the user's preference. The up-and-down wind direction plates 120 and 130 of the indoor unit are moved in one direction (counterclockwise in FIG. 9) on the basis of the stop position (solid line position in FIG. 9) when moving from the stop state to the operating state. Only if it moves continuously and rotates, and when it is in the substantially horizontal direction, it blows the air-conditioning air forward from the blower outlet 1, and if it is in the direction of the perpendicular direction, it blows air-conditioning air downward from the blower outlet 1 have.

However, in order to obtain better blowing characteristics, it has been devised to enable the up and down wind direction plates to be rotated in both directions with respect to the stop position.

For example, the front vertical wind direction plate 130 is rotatable counterclockwise from the stop position to a predetermined angle, and the vertical wind direction plate 120 located at the rear is clockwise and counterclockwise from the stop position. When it is possible to rotate by a predetermined angle, when the air is blown forward, the upper and lower wind direction plates 120 and 130 are rotated counterclockwise so that the upper and lower wind direction plates 120 and 130 face almost horizontally (Fig. 10 solid position). In the case of blowing in the downward direction, the rear vertical wind direction plate 120 is rotated clockwise from the stop position, and the front vertical wind direction plate 130 is rotated large clockwise (see the dashed-line position in FIG. 10). Good ejection characteristics can be obtained in the ejection direction in both the up and down directions.

However, when the upper and lower wind direction plates 130 positioned at the rear side are rotatable by a predetermined angle clockwise and counterclockwise from the stop position, as shown in the region A in FIG. 9, both wind direction plates 120 are rotated during the rotation. 130 creates an area where collisions can occur.

For this reason, in the structure shown in FIG. 9, when any one of the up-and-down wind direction plates 120 and 130 is in the state located in the area | region outside in the area | region A, the other up-and-down wind direction plates 120 and 130 are shown. ) Must be rotated. For this reason, when the rotation of the top and bottom wind direction plates 120 and 130 are respectively controlled by a motor, it is necessary to control the rotation while checking the positional relationship between the top and bottom wind direction plates 120 and 130, and this control is very complicated. There was a problem of getting lost. In addition, when the user manually rotates the upper and lower wind direction plates 120 and 130, the upper and lower wind direction plate 120 and the upper and lower wind direction plate 130 collide with each other, and the upper and lower wind direction plates 120 and 130 may be damaged. There was.

The present invention has been made in view of such a point, and a plurality of up and down wind direction plates are provided, and at least one of the plurality of up and down wind direction plates is rotated clockwise or counterclockwise based on the position of closing the jet port. It is an object of the present invention to allow both the upper and lower wind direction plates to rotate freely without colliding with each other without using complicated control. Moreover, an object of this invention is to improve the external appearance of the indoor unit at the time of stop.

BRIEF DESCRIPTION OF THE DRAWINGS The figure which shows the cross section of 1st Embodiment of the indoor unit of the air conditioner which concerns on this invention.

2 is a cross-sectional view showing the operation of the up-and-down wind direction plate in the first embodiment;

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

4 is a cross sectional view showing a modification of the first embodiment;

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

Figure 6 is a perspective view showing the appearance of the indoor unit of the air conditioner to which the present invention is applied;

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

8 is a perspective view showing a state in which the front panel of the indoor unit of the air conditioner to which the present invention is applied is removed;

9 is a cross-sectional view showing the arrangement and operation of the vertical wind direction plate of the indoor unit of the conventional air conditioner;

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

* Explanation of symbols for the main parts of the drawings

1: ejection opening 2: ejection passage

3: front panel 20, 30: vertical wind direction plate

22: outer surface (of the up-and-down wind direction plate 20)

23: Shear rim (of up and down wind direction plate 20)

32: outer surface (of the upper and lower wind direction plates 30)

34: Rear edge (of up-and-down wind direction board 30)

In the indoor unit of the air conditioner, the first means is provided in the front panel and the front lower portion of the front panel, a blowout port for ejecting the air conditioning air in the room and a blowout passage for flowing the air conditioning air forward and downward toward the blowout opening; And a plurality of up-and-down wind direction plates installed at the ejection openings and freely rotatable around a rotating shaft to change the ejecting direction of the air conditioning air, respectively, in a clockwise and counterclockwise direction at a position where at least one of the up and down wind direction plates closes the ejection openings. And a plurality of up and down wind direction plates rotatable in the direction, and when the plurality of up and down wind direction plates are in a position to close the jet port, the rotation trajectories of the up and down wind direction plates can be rotated without intersecting between the up and down wind direction plates adjacent to each other. A gap is formed.

According to the first means, since a gap is formed between the upper and lower wind direction plates adjacent to each other so that the rotation trajectories of the upper and lower wind direction plates do not intersect, at least one of the upper and lower wind direction plates of the plurality of upper and lower wind direction plates has a blowout port. It can rotate freely clockwise or counterclockwise with respect to the closing position. For this reason, the indoor unit which has more favorable blowing characteristic can be obtained easily.

The second means is that, when the plurality of vertical wind direction plates are in a position to close the jet port, the rear edge of the front vertical wind direction plate among the vertical wind direction plates adjacent to each other is located below the front edge of the rear vertical wind direction plate. Is doing.

According to the second means, when the upper and lower wind direction plates are in a position to close the jet port, when the indoor unit is viewed from the front, the gap formed between the upper and lower wind direction plates and the upper and lower wind direction plates cannot be confirmed by viewing, so that an indoor unit with a beautiful appearance can be obtained. .

The third means is that the upper and lower wind direction plate of the plurality of up and down wind direction plate is rotated in one direction only on the basis of the position of closing the ejection opening, and is located behind the front of the most up and down wind direction plate of the plurality of up and down wind direction plate. The up-and-down wind direction plate is characterized in that it rotates in both directions on the basis of the position of closing the jet port.

According to the third means, since the foremost up and down wind direction plate of the plurality of up and down wind direction plates rotates only in one direction on the basis of the position of closing the ejection port, the foremost up and down wind direction plate is rotated in both directions. Can be placed close to the rim. This makes it possible to set a small gap between the front windshield and the front windshield. Because of this, it is also possible to obtain an indoor unit with a beautiful appearance. In addition, since it is as close to the blower as the top and bottom wind direction plates on the rear side, the influence on the wind direction of the blown wind is large, and the influence on the wind direction by the front up and down wind direction plates is less. For this reason, the wind direction of the blown wind can be efficiently controlled by rotating the upper and lower wind direction plates in the rear in both directions even if the front upper and lower wind direction plates are rotated in one direction.

The fourth means is such that when the plurality of up and down wind direction plates are in a position to close the ejection openings, the outer surface of the up and down wind direction plates is substantially along the imaginary extension surface of the outer surface of the front panel of the circumferential edge of the ejection opening in a cross section. It is characterized by that.

According to the fourth means, when the up-and-down wind direction plate is in the position which closes the said blower opening, since the up-and-down wind direction plate follows the external shape of the front panel, the beauty of the indoor unit can be further improved.

In the fifth means, when the plurality of upper and lower wind direction plates are in a position to close the ejection opening, a gap is formed between the upper and lower wind direction plates adjacent to the upper edge of the ejection opening and the peripheral edge of the ejection opening in a cross section. It is characterized by not.

According to the fifth means, when the plurality of upper and lower wind direction plates are in a position to close the jet port, when the indoor unit is viewed from the front, the gap between the upper and lower wind direction plates and the front panel cannot be confirmed, thereby further improving the aesthetics of the indoor unit. Can be.

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

According to the sixth means, the space between the up and down wind direction plates can be substantially widened by bending the up and down wind direction plates. For this reason, when the air conditioner is in the vicinity of the stop position, i.e., the position where the blower is closed, just before the air conditioner stops or immediately after the start of operation, and when the indoor fan is in the operating state or not completely stopped, Surging of the jet flow caused by clogging by the wind direction plate can be prevented. For this reason, the generation of noise due to surging phenomenon can be prevented.

Embodiment of the Invention

1st Embodiment

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described with reference to drawings. First, the first embodiment will be described. 1, 2 and 6 to 8 are diagrams showing a first embodiment of the present invention.

As shown in Fig. 6 and Fig. 7, the indoor unit of the air conditioner attached to the upper wall of the room is installed in the front panel 3 and the front lower part of the front panel 3, and the air-conditioning air (cooling air, dehumidification) in the room A jet port 1 for jetting air, heating air, and the like, and a jet passage 2 through which air-conditioning air flows forward and downward toward the jet port 1. The blowing passage 2 is fitted to the front wall 2a and the rear wall 2b in the cross section. In addition, the inlet 4 of the indoor air is formed on the front surface of the front panel 3, and the inlet 5 of the indoor air is formed on the top surface of the front panel 3.

In addition, as shown in FIG. 7, inside the front panel 3, a main room including a first heat exchanger 6a corresponding to the intake port 4 and a second heat exchanger 6b corresponding to the intake port 5. The heat exchanger 6 is provided. Further, an auxiliary chamber heat exchanger (supercooled heat exchanger) 7 is provided between the suction port 5 and the second heat exchanger 6b. Moreover, the cross flow type indoor fan 8 is provided inside the main indoor heat exchanger 6 (between the 1st heat exchanger 6a and the 2nd heat exchanger 6b). In addition, in FIG. 7, what is shown with the code | symbol 9 is provided in the upstream of the up-and-down wind direction plate 10, and is a left-right wind direction plate for changing the left-right ejection direction of air conditioning air.

The indoor unit is configured to suck the indoor air at the suction ports 4 and 5 by the rotation of the indoor fan 8. The indoor air sucked by the suction port 4 passes through the first heat exchanger 6a and flows into the blowout passage 2, and the indoor air sucked by the suction port 5 passes through the second chamber heat exchanger 7 and the second heat exchanger. It is made to flow through the jet 6a to the jet passage 2.

In addition, the indoor unit of the air conditioner is provided in the blower port 1, and is provided with two up-and-down wind direction plates 20 and 30 which are respectively freely rotated around the rotation shafts C1 and C2 parallel to each other. The upper and lower wind direction plates 20 positioned on the rear wall 2b side of the jet passage 2 are curved at both ends toward the rotation shaft C1 side in the cross section. Moreover, the upper and lower wind direction plates 30 located on the front wall 2a side of the jet passage 2 are both curved in the cross section toward the rotation shaft C2 side. Each of the up and down wind direction plates 20 and 30 is driven independently by the up and down wind direction plate motors M1 and M2 shown in FIG. 8, respectively. In addition, each of the up and down wind direction plates 20 and 30 can be rotated also by a user pressing the up and down wind direction plates 20 and 30 manually.

In addition, as shown in FIG. 7, in the jet passage 2, the plate-shaped support member 15 for supporting the up-and-down wind direction plates 20 and 30 in the intermediate part of the rotation axis C1 and C2 direction is provided, have. The support member 15 has a base portion 16 supported at both ends by the front wall 2a and the rear wall 2b, and a support portion 17 extending downwardly from an approximately center of the base 16, and And a support 18 extending downward from the front wall 2a side of the base 16.

In addition, the mounting plates 25 and 35 are installed on the rotation shafts C1 and C2 of the upper and lower wind direction plates 20 and 30 to correspond to the support parts 17 and 18 of the support member 15, respectively. The tips of 25 and 35 and the tips of each of the support parts 17 and 18 of the support member 15 are rotatably connected at positions of the rotation shafts C1 and C2, respectively.

The rotating shaft C1 is located on the inner surface 21 side of the up-and-down wind direction plate 20, and is shifted in the thickness direction with respect to the up-and-down wind direction plate 20. As shown in FIG. 2, the up-and-down wind direction plate 20 provided in the positional relationship with the rotating shaft C1 is a stop position (solid line position of FIG. 2), ie, the position where the up-and-down wind direction plate 20 closes the ejection opening 1. As shown in FIG. It rotates in both clockwise and counterclockwise directions in FIG. 2 with reference to (see the dashed-dotted line position in FIG. 2).

Moreover, the rotating shaft C2 is located in the inner surface 31 side of the up-and-down wind direction plate 30, and is shifted with respect to the up-and-down wind direction plate 30 in the thickness direction. The up-and-down wind direction plate 30 installed in such a positional relationship with the rotation shaft C2 is half based on the stop position (see the solid line position in FIG. 2), that is, the position where the up-and-down wind direction plate 30 closes the jet port 1. It is only intended to rotate clockwise (see the dashed line position in FIG. 2).

Hereinafter, with reference to FIG. 1, the arrangement | positioning method of the up-and-down wind direction plates 20 and 30 in the blower outlet 1, and the positional relationship of the up-and-down wind direction plate 20 and the up-and-down wind direction plate 30 are demonstrated. 1 schematically shows the lower part of FIG. 6 and is simplified or omitted for parts not directly related to the main part of the present invention for the sake of simplicity of the drawings (hereinafter also the same in FIGS. 2 to 6).

As shown in FIG. 2 at the time of operation, the up-and-down wind direction plates 20 and 30 which rotate (refer to the dashed-dotted line position of FIG. 2) have the blower outlet 3 at the end of operation (henceforth "stopping"). The state which returned to the closing position (refer to the solid line position of FIG. 2, hereinafter called a "stop position") is shown.

That is, when a driving stop command is input by a remote controller or the like, a signal is output to move to a stop position with respect to the drive motors M1 and M2 from a control circuit (not shown) and then to stop. The control circuit detects the position of the up-and-down wind direction plate, and controls the operation stop of the drive motors M1 and M2 based on this. Thereby, each of the up-and-down wind direction plates 20 and 30 is fixed to move to arbitrary positions according to an operation mode or a driving condition. In this embodiment, the up-and-down wind direction plate 20 is rotatable clockwise and counterclockwise from a stop position, and the up-down wind direction plate 30 is comprised so that rotation is possible only in one direction from a stop position.

When the up-and-down wind direction plates 20 and 30 are in a stop position, as shown in FIG. 1, the predetermined gap x is formed in the front-back direction between the up-down wind direction plate 20 and the up-and-down wind direction plate 30. As shown in FIG. . The gap x is set to a value as small as possible so that the upper and lower wind direction plates 20 and the upper and lower wind direction plates 30 do not collide with each other when the upper and lower wind direction plates 20 and the upper and lower wind direction plates 30 are rotated. It is. Thus, since the clearance x is set, the up-and-down wind direction plates 20 and 30 are able to rotate, without mutually rotating trajectory as shown in FIG.

Further, a predetermined gap y is formed between the upper and lower wind direction plates 20 and the rear wall 2b of the jet passage 2. The gap y is set to a value as small as possible so that the upper and lower wind direction plates 20 do not collide with the rear wall 2b of the jet passage 2 when the upper and lower wind direction plates 20 are rotated. This clearance y can be made very small by the shape of the up-and-down wind direction boards 20 and 30, and an attachment structure. However, in the case of 0, the gap y cannot be made 0 because the up-and-down wind direction plate 20 cannot rotate.

In addition, as shown in FIG. 1, the outer surface 32 of the up-and-down wind direction board 30 will substantially follow the virtual extension surface of the outer surface of the front panel 3 of the circumferential edge of the blower outlet 1 at the time of stopping. have.

That is, the outer surface 32 of the up-and-down wind direction plate 30 maintains the curvature of the outer surface 3a of the front part of the front panel 3, and is shown by the dashed-dotted line in FIG. ), The outer surface 32 and the virtual extension surface S1 coincide with each other.

In addition, a gap is not provided between the upper and lower wind direction plates 30 and the front wall 2a of the blowing passage 2, and the front edge 33 and the front wall 2a of the upper and lower wind direction plates 30 are substantially. In contact.

That is, the front end edge 33 of the up-and-down wind direction board 30 is substantially in contact with the peripheral edge of the front upper part of the blower outlet 1. This is because the vertical wind direction plate 30 only rotates counterclockwise with respect to the stop position, and thus it is not necessary to provide a gap.

In addition, as shown in FIG. 1, the upper and lower wind direction plates of the upper and lower wind direction plates 20 and 30, that is, the upper and lower wind direction plates 20, the front edge 21 side thereof is bent toward the rotation axis C1 side. It has a substantially "<" shaped cross-sectional shape. In addition, the rear edge 24 side of the outer surface 22 of the up-and-down wind direction plate 20 substantially follows the virtual extension surface of the outer surface of the front panel 3 of the peripheral edge of the blower outlet 1 at the time of stop. . That is, the rear edge 24 side of the outer surface 22 of the up-and-down wind direction plate 20 extends the lower outer surface 3b of the front panel 3 while maintaining its curvature (S2) (FIG. 1). The outer surface 22 and the virtual extension surface S2 coincide with each other to draw a smooth curved surface.

In addition, at the time of stopping, the upper and lower wind direction plates of the upper and lower wind direction plates, that is, the rear edge 34 of the upper and lower wind direction plates 30 are relatively rearwards of the upper and lower wind direction plates, that is, the upper and lower wind direction plates 20. It is located below the edge 23. That is, the up-and-down wind direction plate 20 and the up-and-down wind direction plate 30 are provided so that it may overlap with each other with the width | variety e in an up-down direction. For this reason, when the indoor unit is viewed from the front, the gap formed between the upper and lower wind direction plates 20 and the upper and lower wind direction plates 30 cannot be visually confirmed, so that the upper and lower wind direction plates 20 are clockwise and Even when it can be rotated in both counterclockwise directions, an indoor unit excellent in appearance can be obtained.

In addition, by bending the upper and lower wind direction plate 20, the space between the upper and lower wind direction plate 20 and the upper and lower wind direction plate 30 is substantially wider than when the upper and lower wind direction plates 20 are not bent (see FIG. 3). can do. For this reason, air conditioning is performed when the upper and lower wind direction plates 20 and 30 are near the stop position, such as immediately before the air conditioner stops or immediately after the start of operation, and when the indoor fan 8 is in an operating state or not completely stopped. Surging phenomenon of the blowing flow which is generated by the air being blocked by the up-and-down wind direction plates 20 and 30 can be prevented. For this reason, the generation of noise due to surging phenomenon can be prevented.

In addition, although the upper and lower wind direction plates 20 were shown in substantially "<" shaped cross-sectional shape in 1st Embodiment demonstrated above, you may change the shape of the upper and lower wind direction plates 20 as shown in FIG. . That is, the whole surface of the outer surface 22 of the up-and-down wind direction plate 20 is curved so that it may follow the shape of the virtual extension surface S2 (shown by the dashed-dotted line in FIG. 3), and the up-and-down wind direction plate 20 will be stopped at the time of stopping. The entire surface of the outer surface 22 of the c) and the virtual extension surface S2 may coincide with each other. In this way, the aesthetic appearance of the indoor unit is stopped because the entire surface of the outer surface 22 of the up and down wind direction plate 20 and the entire surface of the outer surface 30 of the up and down wind direction plate 30 follow the external shape of the front panel 3 at the time of stopping. Can be further improved.

In addition, as shown in FIG. 4, the up-and-down wind direction board 30 may be arrange | positioned slightly back from the outer surface 3a of the front part of the front panel 3. As shown in FIG.

2nd Embodiment

Next, 2nd Embodiment is described. It is a figure which shows the 2nd Embodiment of this invention. 2nd Embodiment differs from the rotation direction of the up-and-down wind direction plate 30 with respect to 1st Embodiment, and is otherwise substantially the same as 1st Embodiment. In 2nd Embodiment, the same code | symbol is attached | subjected about the same part as 1st Embodiment, and detailed description is abbreviate | omitted.

As shown in FIG. 5, the front upper and lower wind direction plates 30 are rotated clockwise (refer to the arrow of FIG. 5) with respect to a stop position (solid line position of FIG. 5). Moreover, the convex part 3c is formed in the lower end of the outer surface 3a of the front part of the front panel 3. As shown in FIG. As shown in FIG. 6, the front end of this convex part 3c enters inside the rotation trace R of the rear edge 34 of the up-and-down wind direction board 30, and the up-and-down wind direction board 30 is shown in FIG. When it rotates clockwise until it reaches the position of a dashed line, it is made to collide with the convex part 3c. However, the motor M2 to drive does not rotate the up-and-down wind direction plate 30 to the position which collides with the convex part 3c. The front edge 33 side of the outer surface 32 of the up-and-down wind direction plate 30 is in contact with the inner surface of the convex portion 3c at the time of stop.

Also in 2nd Embodiment which has such a structure, the effect similar to 1st Embodiment can be acquired.

In addition, although the case where the indoor unit was equipped with the two upper and lower wind direction plates 20 and 30 was demonstrated in 1st and 2nd embodiment demonstrated above, the space | interval between the upper and lower wind direction plates 20 and 30 was expanded, Between the wind direction plate 20 and the up-and-down wind direction plate 30, the further up-down wind direction plate which has the same shape and function as the up-and-down wind direction plate 20 may be further provided. In this case, the rear edge 34 of the up-and-down wind direction plate 30 is positioned below the rear top and bottom wind direction plate, that is, the front edge of the additional up and down wind direction plate, and the rear edge of the additional up and down wind direction plate is the rear top and down wind direction plate. That is, it may be positioned below the front edge 23 of the up-and-down wind direction plate 20.

In the first and second embodiments, the upper and lower wind direction plates 20 and 30 are driven by the upper and lower wind direction motors M1 and M2, but the upper and lower wind direction plates 20 and 30 are not limited thereto. At least one of 30) may be rotated manually.

As described above, according to the present invention, the plurality of vertical wind direction plates provided can be rotated in any direction on the basis of the stop position because the rotational directions of the plurality of vertical wind direction plates do not intersect with each other. For this reason, the indoor unit which has a more favorable blowing characteristic 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 unnecessary when the upper and lower wind direction plates are rotated by a motor, so that the upper and lower wind direction plates and the supporting portion thereof may be used even when the user manually operates the upper and lower wind direction plates. There is no fear of breakage.

In addition, since the rear edge of the front vertical wind direction plate is located below the front edge of the rear vertical wind direction plate among the up and down wind direction plates adjacent to each other at the time of stopping, an indoor unit with a beautiful appearance can be obtained.

Claims (3)

In the indoor unit of the air conditioner, Front panel; An air outlet provided at a lower front of the front panel to eject air conditioning indoors; A jet passage for flowing the air conditioning air downward toward the jet port; and A first up-and-down wind direction plate installed at the front side to rotate in one direction on the basis of the position of closing the outlet port to change the up-down direction of the air-conditioning air; And a second up-and-down wind direction plate which is installed at the ejection port and installed to rotate in both directions on the basis of the position of closing the ejection port, behind the first up-down wind direction plate so as to change the up-down ejection direction of the air conditioning air. , When the first and second up and down wind direction plates are in a position to close the jet port, a gap is formed between the up and down wind direction plates adjacent to each other so that the rotation trajectories of the up and down wind direction plates do not intersect, and are rotatable. When the first and the second up and down wind direction plate is in the position to close the jet port, the rear edge of the first wind direction plate of the up and down wind direction plate adjacent to each other is located below the front edge of the second up and down wind direction plate, When the first and second up-and-down wind direction plates are in a position to close the ejection port, the front and upper edges of the ejection port and the front edge of the first up and down wind direction plate adjacent to the ejection port in cross section are contacted. Indoor unit characterized in that there is. The method of claim 1, When the first and second up-and-down wind direction plates are in a position to close the ejection port, the outer surface of the first up and down wind direction plate is substantially along the imaginary extension surface of the outer surface of the front panel of the peripheral edge of the ejection port in a cross section. Indoor unit characterized in that. The method of claim 1, The upper edge side of the said 2nd up-and-down wind direction plate is bent to the said rotating shaft side in a cross section, The indoor unit characterized by the above-mentioned.

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