JP2017215091A - Indoor machine of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress occurrence of short-circuit that air fed out from a blowout port provided on a decorative panel is suctioned from a suction grille provided on the decorative panel.SOLUTION: An indoor machine of an air conditioner includes a housing, a heat exchanger provided in the housing, an air blower configured to feed indoor air to the heat exchanger, a decorative panel installed on a ceiling surface so as to cover a lower surface of the housing, and a suction grille and a blowout port provided on the decorative panel. Also, a plurality of blowout ports are aligned independently on one side of the decorative panel, and at each blowout port, provided is a wind direction plate extending from one end side to the other end side in a longitudinal direction of the blowout port.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an indoor unit of an air conditioner, and in particular, after sucking indoor air with a blower provided in a housing and cooling or heating the air with a heat exchanger provided on the blowout side of the blower, This is suitable for an indoor unit that blows out toward the room.

  The air conditioner is a compressor that compresses the refrigerant in the refrigerant circulation channel in which the refrigerant is sealed, an indoor heat exchanger that exchanges heat between the refrigerant and the indoor air, an expansion valve that decompresses the refrigerant, and exchanges heat between the refrigerant and the outside air. The refrigeration cycle is configured by sequentially connecting outdoor heat exchangers to be connected by refrigerant piping.

  The outdoor heat exchanger is stored in a casing of an outdoor unit together with a blower that sends outside air to the outdoor heat exchanger, and the indoor heat exchanger is an indoor unit together with a blower that sends room air to the indoor heat exchanger. Stored in the housing.

  There are various types of indoor units corresponding to the installation location. Recently, particularly in the field of commercial air conditioners, the interior of the indoor unit is embedded in the ceiling, and a decorative panel installed on the ceiling surface is installed. The so-called ceiling-embedded cassette type, in which air is sucked and blown through, is the mainstream.

An example of the indoor unit of this ceiling-embedded cassette type conventional air conditioner is shown in FIGS. 6 is a longitudinal sectional view of a conventional indoor unit, and FIG. 7 is a plan view of the indoor unit of FIG. 6 viewed from below. The configuration of a conventional indoor unit will be described with reference to these drawings.
In FIG. 6, the indoor unit 1 is configured to send indoor air to the housing 2 embedded in the ceiling, the heat exchanger (indoor heat exchanger) 3 provided in the housing 2, and the heat exchanger 3. The centrifugal blower (blower) 4 and the decorative panel 5 installed on the ceiling so as to cover the lower surface of the casing are configured as main components.

  The decorative panel 5 includes a suction grill 6 at the center, and air outlets 8 including a wind direction plate 7 are provided on four sides around the suction grill 6. Reference numeral 9 denotes a filter installed on the back surface (inner housing side) of the suction grill 6. The suction grill 6 is configured to be detachable from the decorative panel 5 together with the filter 9 so that the filter 9 can be easily cleaned.

  The centrifugal blower 4 provided in the housing 2 includes a centrifugal fan 4a and a motor 4b for rotating the centrifugal fan 4a via a shaft. Further, in the casing 2, a bell mouth 10 provided on the inlet side of the centrifugal fan 4a for guiding the intake air, provided on the outer peripheral side of the lower surface of the bell mouth 10, and the indoor unit such as the control of the centrifugal fan 4 is provided. There are also provided an electrical component box 11 containing a control board necessary for controlling the operation of 1, a drain pan 12 installed so as to cover the lower surface of the heat exchanger 3, and the like.

The drain pan 12 is for receiving condensed water generated in the heat exchanger 3 during cooling.
The electrical component box 11 has a structure that allows easy maintenance by opening the suction grill 6.

  Since the bell mouth 10 is attached to the inner peripheral portion of the drain pan 12 from below, maintenance such as replacement of the centrifugal fan 4a and the motor 4b is performed by opening the suction grill 6 and removing the bell mouth 10. It is a structure that can be easily.

  By operating the motor 4b, the centrifugal fan 4a rotates, and the indoor air enters the suction grill 6, the filter 9, and the housing 2 as shown by an air flow 13 indicated by arrows in FIG. It passes through the installed bell mouth 10 and is sucked from the suction port of the centrifugal fan 4a and discharged from the discharge port of the centrifugal fan 4a as shown by the air flow 14 indicated by the arrow.

  The heat exchanger 3 is disposed so as to surround the centrifugal fan 4, and the air discharged from the centrifugal fan 4 a passes through the indoor heat exchanger 3 and flows through the heat exchanger. After the heat exchange, and the air flow 15 indicated by the arrows, the upper and outer sides are blown into the room from the outlet 8 after passing through the outlet passage 16 formed by the inner surface of the housing 2. It has become.

Next, the flow of the air (air-conditioned air heat-exchanged with the refrigerant) blown out from the air outlet 8 of the decorative panel 5 will be described with reference to FIG. In addition, the part which attached | subjected the same code | symbol as FIG. 6 is the same part.
In FIG. 7, the casing 2 of the indoor unit 1 is hidden behind the decorative panel 5, and its outer shape is indicated by a broken line. The suction grill 6 is provided in the center of the decorative panel 5, and an air outlet 8 (8 a to 8 d) provided with wind direction plates 7 (7 a to 7 d) is provided around the suction grill 6. As shown in FIG. 7, the indoor unit 1 is a four-way blowing type, and the wind direction plate 7 and the outlet 8 are arranged one by one on the four sides of the decorative panel 5 around the suction grill 6. ing.

When the indoor unit 1 is operated, the pressure of the air that has passed through the heat exchanger 3 is increased at the corner in the housing 2 where the air outlet 8 does not exist, so that the air flows toward the air outlet 8. Therefore, the wind speed distribution of the blown air blown out from each of the outlets 8a to 8d increases the speed of the central portion in each of the outlets 8a to 8d, as indicated by 17a to 17d, The speed distribution is such that the speed at both ends of each outlet becomes smaller.
For this reason, the air-conditioning air heat-exchanged with the refrigerant | coolant flowed in the center direction of each side of the decorative panel 5, and there existed a subject that it was difficult to flow around the corner part of the decorative panel 5.

  As a prior art for solving such a problem, for example, there is one described in Japanese Patent Application Laid-Open No. 2011-69593 (Patent Document 1). In this patent document 1, two air outlets each provided with a wind direction plate are provided on each side of the decorative panel, and the air direction plates of the two air outlets provided on each side are made to have different angles. It is made to stir.

JP 2011-69593 A

  However, in the air conditioner described in Patent Document 1, each air outlet has a shape bent at an outer end portion in the longitudinal direction, and the wind direction plate extends from the inner end portion in the longitudinal direction of the air outlet. Only the bent portion of the outer end portion is provided, and the wind direction plate is not provided on the outer side from the bent portion. For this reason, it is impossible to change the wind direction of the outer end, and in particular, when the air volume is low, the occurrence of a so-called short circuit in which the air blown from the outer end is sucked from the suction grille. There was a problem that it could not be suppressed.

  An object of the present invention is to provide an air conditioner capable of suppressing the occurrence of a short circuit in which air blown from a blowout port provided in a decorative panel is sucked from a suction grill provided in the decorative panel. To get an indoor unit.

  To achieve the above object, the present invention covers a casing, a heat exchanger provided in the casing, a blower for blowing indoor air to the heat exchanger, and a lower surface of the casing. An indoor unit of an air conditioner comprising a decorative panel installed on a ceiling surface, and a suction grill and an air outlet provided on the decorative panel, wherein the air outlet is independent of one side of the decorative panel. A plurality of the air outlets are arranged side by side, and each of the air outlets is provided with a wind direction plate extending from one end side in the longitudinal direction to the other end side.

  ADVANTAGE OF THE INVENTION According to this invention, the air conditioner which can suppress generation | occurrence | production of the short circuit from which the air which blows off from the blower outlet provided in the decorative panel is inhaled from the suction grill provided in the decorative panel. There is an effect that an indoor unit can be obtained.

The top view of the indoor unit of the air conditioner which shows Example 1 of this invention. The top view of the indoor unit of the air conditioner which shows Example 2 of this invention. The top view of the indoor unit of the air conditioner which shows Example 3 of this invention. FIG. 4 is a cross-sectional view taken along line IV-IV in the indoor unit shown in FIG. 3. The VV arrow directional cross-sectional view in the indoor unit shown in FIG. The longitudinal cross-sectional view which shows an example of the indoor unit of the conventional air conditioner. The top view of the indoor unit shown in FIG.

  Hereinafter, specific examples of the indoor unit of the air conditioner of the present invention will be described with reference to the drawings. In each figure, the part which attached | subjected the same code | symbol is the part which is the same or corresponds.

  A first embodiment of an indoor unit of an air conditioner of the present invention will be described with reference to FIG. FIG. 1 is a plan view of an indoor unit of an air conditioner according to the first embodiment as viewed from below. In FIG. 1, the parts denoted by the same reference numerals as those in FIGS. 6 and 7 are the same or corresponding parts. Yes, description of the same part is omitted. Therefore, in the explanation of the indoor unit of the first embodiment, the parts that are not explained have the same configuration as that shown in FIG. 6 and FIG.

  The indoor unit of the air conditioner of the first embodiment shown in FIG. 1 is different from the conventional indoor unit shown in FIGS. 6 and 7 except for the configuration of the air outlet and the wind direction plate provided at the air outlet. Since the configuration is almost the same, in the description of the first embodiment, the configuration of the air outlet and the wind direction plate will be mainly described.

  In the present embodiment, two air outlets 8 are provided on each side (four sides) around the suction grille 6 provided in the center of the decorative panel 5 and arranged in the longitudinal direction of each side. The two outlets 8 (8a1 and 8a2, 8b1 and 8b2, 8c1 and 8c2, 8d1 and 8d2) provided on each side are independently arranged at predetermined intervals and are in contact with each other. Is not configured. Each air outlet 8 has a wind direction plate 7 (7a1, 7a2, 7b1, 7b2, 7c1, 7c2, 7d1, 7d2) extending in the entire longitudinal direction (extending from one end side to the other end side). Is provided.

In the present Example 1, the shape of each said blower outlet 8 is formed in the substantially rectangular shape, and the shape of each said wind direction board 7 is also formed in the substantially rectangular shape.
Further, in the present embodiment, the distance (distance A) between two air outlets (for example, air outlets 8a1 and 8a2) on each of the four sides of the indoor unit is set to be equal to the adjacent air outlets (for example, air outlets) on two adjacent sides. The distance between the outlets 8a1 and 8d2) is equal to or greater than the distance (distance B). By sufficiently securing the distance A in this way, it is possible to sufficiently secure a suction flow path for the air sucked into the suction grill 6 and thereby suppress a short circuit. Further, by sufficiently securing the distance A and disposing the two outlets 8 on each side closer to the corner of the decorative panel 5, the air can be blown out more widely and uniformly.

  In addition, since the area (blower area) of the blower outlet 8 will become small if the said distance A is enlarged too much, it is preferable to make the said distance A as small as possible in the range which can suppress a short circuit. Further, in order to ensure a sufficient suction flow path for air sucked into the suction grille 6 from the four corners of the decorative panel, the distance B is preferably configured not to be too small.

  A broken line 2 in FIG. 1 indicates the outer shape of the housing 2 hidden behind the decorative panel 5. In FIG. 1, as described above, the air outlet 8 and the wind direction plate 7 are distinguished from each other by attaching the symbols a, b, c, and d to the four sides, respectively. In order to distinguish between the two air outlets provided in parallel and the two wind direction plates provided in each air outlet, as a reference numeral further attached with a symbol of 1, 2 at the end of each reference sign, Each air outlet and each wind direction plate are distinguished.

  In the indoor unit 1 of the air conditioner according to the first embodiment configured as shown in FIG. 1, when the air conditioner is operated, the inside of the housing 2 in the outer portion in the longitudinal direction of each of the outlets 8 a 1 to 8 d 2. Then, since the air which passed the heat exchanger 3 (refer FIG. 6 etc.) cannot blow out directly from the decorative panel 5 to a room | chamber interior, a pressure rises. For this reason, the air which blows off from each blower outlet 8a1-8d2 is pushed toward the center of each blower outlet from the both sides of each said blower outlet 8a1-8d2. Accordingly, as in the wind speed distributions indicated by 17a1 to 17d2 in FIG. 1, the wind speed distribution becomes higher at the center side of each of the outlets 8a1 to 8d2, and the speed becomes lower at the end side of each outlet. That is, in each side of the indoor unit 1, there are two portions where the speed of the blown air increases at an interval, and a conventional indoor unit in which only one outlet is provided on each side. Compared to the above, air can be blown out more widely and uniformly.

In the present embodiment, each of the wind direction plates 7a1 to 7d2 is provided over the entire longitudinal direction of each of the air outlets 8a1 to 8d2, and for this reason, the end side of each of the air outlets 8a1 to 8d2 is provided. However, since the air blowing direction can be controlled by the air direction plates 7a1 to 7d2, the air blown from the end sides of the air outlets 8a1 to 8d2 flows directly to the suction grill 6. Short circuit can be prevented.
In the first embodiment, the two wind direction plates 7 (7a1 and 7a2, 7b1 and 7b2, 7c1 and 7c2, 7d1 and 7d2) provided on each side have the same inclination angle with one motor. To be controlled. Alternatively, a configuration may be adopted in which a motor is provided for each wind direction plate 7 so that the inclination angle of each wind direction plate 7 can be independently controlled. Alternatively, by connecting two wind direction plates 7 provided on each side via an electromagnetic clutch to one motor, the inclination angle of the two wind direction plates 7 can be controlled independently by one motor. It can also be configured to.

  Two motors for driving each wind direction plate 7 are provided between the outlets 8 (8a1 and 8a2, 8b1 and 8b2, 8c1 and 8c2, 8d1 and 8d2) provided on each side of the indoor unit 1. Are provided on the back of the decorative panel 5. Further, in order to control the inclination angle of each wind direction plate 7, a control device for controlling a motor or the like for driving each wind direction plate 8 is also provided in the electrical component box 11 (see FIG. 6). Yes. Other configurations are the same as those shown in FIGS. 6 and 7.

  Next, Example 2 of the indoor unit for an air conditioner of the present invention will be described with reference to FIG. FIG. 2 is a plan view of the indoor unit of the air conditioner according to the second embodiment as viewed from below. In FIG. 2, the parts denoted by the same reference numerals as those in FIGS. 1, 6, and 7 described above are the same or equivalent. The description of the same part will be omitted, and the part different from the first embodiment will be mainly described.

  The indoor unit of the air conditioner in the second embodiment is different from the first embodiment in that the shape of each outlet 8a1 to 8d2 is such that the two sides in the longitudinal direction are parallel and the outer side is more than the inner side. It is the point comprised in the trapezoid shape so that it may become long. The wind direction plates 7a1 to 7d2 are also configured in a trapezoidal shape in accordance with the shape of the outlets 8a1 to 8d2.

  In order to increase the air volume of the air conditioner, it is desirable to increase the area of the air outlet. When two air outlets are provided apart from each other as in this embodiment, each air outlet is secured in order to secure the area of the air outlet. It is preferable that the outer side of the outlet 8 is longer than the inner side and extends to the corner side of the decorative panel 5.

  However, if the distance B between two adjacent outlets (for example, 8a1 and 8d2) provided on two adjacent sides is reduced, conventionally, the suction grill 6 is sucked from this portion (four corners of the decorative panel 5). A sufficient air suction flow path cannot be secured, and the sucked-in air is obstructed by the blown-out air blown out from the blow-out port and is not easily sucked, and a short circuit is likely to occur.

  In the second embodiment, the shape of each of the outlets 8a1 to 8d2 is a trapezoid in which the sides in the longitudinal direction are parallel and the outer side is longer than the inner side. Since the inner sides of the outlets 8a1 to 8d2 are shorter than the outer sides, it is possible to secure a wider distance B between two adjacent outlets (for example, 8a1 and 8d2) provided on two adjacent sides. It becomes possible. Therefore, since the distance B can be secured more widely and a suction flow path for the air sucked into the suction grill 6 can be sufficiently secured, a short circuit can be suppressed.

Similarly, when the distance A between two air outlets (for example, 8a1 and 8a2) arranged on each side is too close, a short circuit is likely to occur. Therefore, the distance A between the air outlets on each side is also adjacent. It is preferable that the size be equal to or larger than the distance B between the air outlets adjacent on two sides (for example, 8a1 and 8d2).
In the example shown in FIG. 2, the air suction flow path to the suction grill 6 formed at the corner of the decorative panel 5 by two adjacent outlets (for example, 8a1 and 8d2) provided on two adjacent sides. Has a structure in which the flow path width is narrower toward the side closer to the suction grille 6, but by making the outer side of each of the outlets 8 formed in a trapezoidal shape longer than the inner side, the suction It is also possible to make the channel width of the channel constant. If comprised in this way, the area of the blower outlet 8 can also be expanded more, ensuring the required flow path width of the said suction flow path.

  In the second embodiment, the other configuration is the same as that of the first embodiment described above.

  Next, a third embodiment of the indoor unit for an air conditioner according to the present invention will be described with reference to FIGS. 3 is a plan view of the indoor unit of the air conditioner according to the third embodiment as viewed from below, FIG. 4 is a sectional view taken along the line IV-IV in the indoor unit shown in FIG. 3, and FIG. 5 is the indoor unit shown in FIG. FIG. 4 and FIG. 5 are sectional views in the vicinity of the air outlet 8b1 or 8b2 in FIG. 3 to 5, the same reference numerals as those in FIGS. 1, 6, and 7 described above are the same or corresponding parts, and the description of the same parts is omitted. The description will focus on the different parts.

  In the indoor unit 1 of the air conditioner in the third embodiment, one of the two outlets 8 on each side (the outlets 8a2, 8b1, 8c2, 8d1 shown in FIG. 3) is shown in FIG. As shown, the wind direction plate 7 (7b1 in the example of FIG. 4) is opened and air is blown out. For the other outlet (the outlets 8a1, 8b2, 8c1, 8d2 shown in FIG. 3), as shown in FIG. 5, the wind direction plate 7 (7b2 in the example of FIG. 5) is closed and the outlet 8 is closed. Close and control not to let air flow.

  That is, in this embodiment, as shown in FIG. 3, the wind direction plates (8a2 and 8b1, 8c2 and 8d1) adjacent to the two corners located at one diagonal corner of the decorative panel 5 are provided. 7a2 and 7b1, 7c2 and 7d1) are opened (for example, fully opened), and the wind direction plates (7a1 and 7d2, 7b2 and 7c1) are controlled by a control device provided in the electrical component box 11 (see FIG. 6) so as to be closed (for example, fully closed).

At this time, the pressure is high because the adjacent outlets 8a1, 8b2, 8c1, 8d2 are closed at the opposite corners of the opened outlets 8a2, 8b1, 8c2, 8d1. At the end on the corner side of the open outlet, the pressure is low because the adjacent outlet is open. Therefore, the air blown out from the outlets 8a2, 8b1, 8c2, and 8d1 is pushed outward (in the direction of the corner), and as a result, the wind speed distributions 17a2, 17b1, 17 shown in FIG. Like 17c2 and 17d1, it blows in the direction of the corner side of the decorative panel 5.
Thus, according to the present embodiment, it is possible to blow out the blown air also in the direction of the corner side of the decorative panel 5 where no blowout port is provided.

  In the above description, the wind direction plates of the air outlets 8a2, 8b1, 8c2, 8d1 adjacent to the two corners located at one diagonal in the four corners of the decorative panel 5 are opened and located at the other diagonal. The wind direction plates of the outlets 8a1, 8b2, 8c1, and 8d2 adjacent to the two corners are controlled to be closed, but one diagonal that controls to open the wind direction plate and control to close the wind direction plate It is preferable that the other diagonals to be switched alternately every predetermined time. If it does in this way, blowing air can be sent in the direction of each diagonal of decorative panel 5 in order.

  Furthermore, by adding a control for simultaneously opening two air outlets provided on each side of the indoor unit to the above control, “the air outlets 8a2 and 8b1 adjacent to two corners located at one diagonal are provided. , 8c2 and 8d1 are opened, and the airflow direction plates of the outlets 8a1, 8b2, 8c1 and 8d2 adjacent to the other two corners are closed. The wind direction plates of the air outlets 8a2, 8b1, 8c2, 8d1 adjacent to the two corners are closed, and the air direction plates of the air outlets 8a1, 8b2, 8c1, 8d2 adjacent to the other two corners are opened. Three types of control, “control” and “control to simultaneously open two outlets (8a1 and 8a2, 8b1 and 8b2, 8c1 and 8c2, 8d1 and 8d2) provided on each side of the indoor unit” Switch to alternate every hour It can be. By controlling in this way, the blown air can be blown around the entire circumference of the indoor unit 1 of the air conditioner, and the comfort can be further improved.

In the above-described control, when the control for fully closing at least one of the wind direction plates 7a1, 7a2, 7b1, 7b2, 7c1, 7c2, 7d1, and 7d2 is performed during the cooling operation, the wind direction plates are fully closed. On the upper side of the wind direction plate 7, air having a low temperature cooled by the heat exchanger 3 accumulates, and on the lower side of the closed wind direction plate 7, humid indoor air is in contact with the wind direction plate 7. By being cooled, dew condensation is likely to occur on the wind direction plate 7. Therefore, the control of closing the wind direction plate in the third embodiment is performed only during the heating operation, and during the cooling operation, the air directions of the plurality of outlets (that is, all the outlets) provided on each side of the indoor unit 1 are provided. It is preferable that only the control for opening the plates simultaneously is performed.
In the third embodiment, other configurations are the same as those of the first embodiment described above.

  According to each embodiment of the present invention described above, a plurality of air outlets are provided independently on one side of the decorative panel, and the air outlets are provided from one end side to the other end side in the longitudinal direction. Since the wind direction plate extending over the entire area is provided, it is possible to improve the wind speed distribution of the air blown out from the blowout port and blow out the air more widely and more uniformly. In addition, there is an effect that it is possible to obtain an indoor unit of an air conditioner that can suppress the occurrence of a short circuit in which blown air is sucked from a suction grill provided on the decorative panel.

In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, in the above-described embodiment, an example in which the present invention is applied to a four-way blowing type indoor unit has been described. However, the present invention is not limited to a four-way blowing type indoor unit, but two-way or one-way blowing. The present invention can be similarly applied to a type indoor unit.
Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described.

1: indoor unit, 2: housing, 3: heat exchanger (indoor heat exchanger),
4: Centrifugal blower (blower), 4a: centrifugal fan, 4b: motor,
5: Makeup panel, 6: Suction grill,
7, 7a-7d, 7a1, 7a2, 7b1, 7b2, 7c1, 7c2, 7d1, 7d2: wind direction plates,
8, 8a to 8d, 8a1, 8a2, 8b1, 8b2, 8c1, 8c2, 8d1, 8d2: outlets,
9: Filter, 10: Bellmouth, 11: Electrical box, 12: Drain pan,
13, 14, 15: air flow, 16: outlet channel,
17a-17d, 17a1, 17a2, 17b1, 17b2, 17c1, 17c2, 17d1, 17d2: Wind speed distribution of the blown air.

Claims (9)

A housing, a heat exchanger provided in the housing, a blower for blowing room air to the heat exchanger, a decorative panel installed on a ceiling surface so as to cover the lower surface of the housing, It is an indoor unit of an air conditioner including a suction grill and an air outlet provided on a decorative panel,
A plurality of the air outlets are independently arranged on one side of the decorative panel,
Each of the air outlets is provided with a wind direction plate extending from one end side in the longitudinal direction to the other end side.   It is an indoor unit of the air conditioner of Claim 1, Comprising: The shape of the said blower outlet and the said wind direction board is comprised by the substantially rectangular shape, The indoor unit of the air conditioner characterized by the above-mentioned.   2. The indoor unit of the air conditioner according to claim 1, wherein the decorative panel includes the suction grill at the center, and the two air outlets each include the wind direction plate on each of four sides around the suction grill. An air conditioner indoor unit characterized by being provided one by one.   It is an indoor unit of the air conditioner of Claim 3, Comprising: The said air blower is a centrifugal air blower, The said heat exchanger is arrange | positioned so that the circumference | surroundings of the said centrifugal air blower may be enclosed, and it was discharged from the said centrifugal air blower. After the air passes through the heat exchanger and exchanges heat with the refrigerant flowing in the heat exchanger, the upper and outer sides pass through a blow-off passage formed by the inner surface of the casing, and then around the suction grille. An indoor unit for an air conditioner, wherein the indoor unit is configured to be blown into the room from the air outlet provided on each of the four sides.   It is an indoor unit of the air conditioner of Claim 3, Comprising: As for the shape of the said blower outlet, two sides of a longitudinal direction are parallel, and an outer side is the inner side of two sides of the said longitudinal direction. An indoor unit of an air conditioner that is configured in a long trapezoidal shape, and that the wind direction plate is also configured in a trapezoidal shape in accordance with the shape of the air outlet.   It is an indoor unit of the air conditioner as described in any one of Claims 3-5, Comprising: The space | interval of the two blower outlets in each side of the said 4 sides is a space | interval with the adjacent blower outlets of two adjacent sides. An indoor unit of an air conditioner characterized by being configured to have a size equal to or greater than that of the air conditioner.   It is an indoor unit of the air conditioner as described in any one of Claims 3-5, Comprising: The wind direction board of the blower outlet which adjoins two corner parts located in one diagonal in the four corners of the said decorative panel An air conditioner indoor unit comprising: a control device that controls to open and close a wind direction plate of an air outlet adjacent to two corners located at other diagonals. The indoor unit for an air conditioner according to claim 7, wherein the control device includes:
Control of opening the wind direction plate of the outlet adjacent to the two corners located at one diagonal, and closing the wind direction plate of the outlet adjacent to the two corners located at the other diagonal;
Control of opening the wind direction plates of the outlets adjacent to the two corners located at one diagonal and closing the wind direction plates of the outlets adjacent to the two corners located at the other diagonals;
An indoor unit for an air conditioner, wherein three types of control for simultaneously opening two outlets provided on each side of the indoor unit are controlled so as to be switched alternately at predetermined time intervals.   8. The indoor unit of an air conditioner according to claim 7, wherein the control device closes the wind direction plate of the air outlet adjacent to the two corners located at one diagonal and performs the other pair during the heating operation. The wind direction plates of the air outlets adjacent to the two corners located at the corners are configured to be able to open, and the air direction plates of all the air outlets are controlled not to be fully closed during cooling operation. Air conditioner indoor unit.

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