KR102445160B1 - Air conditioner and method for controlling the same - Google Patents

Abstract

An indoor unit of an air conditioner according to the present invention includes a housing having an inlet and an outlet, a heat exchanger provided inside the housing, and a blower fan that sucks air from the inlet and heat-exchanges the sucked air with the heat exchanger and discharges it to the outlet; and an airflow control device for controlling a discharge airflow discharged from the discharge port by sucking air around the discharge port. Therefore, it is possible to control the direction of the discharge air flow without a conventional blade structure, the discharge amount is increased, the flow noise is reduced, and design differentiation is possible.

Description

Air conditioner and its control method

The present invention relates to an air conditioner for controlling a discharge air flow without a blade structure and a method for controlling the same.

An air conditioner is a device that includes a compressor, a condenser, an expansion valve, an evaporator, a blower fan, and the like, and controls indoor temperature, humidity, airflow, etc. using a refrigeration cycle. The air conditioner may be classified into a separate type having an indoor unit disposed indoors and an outdoor unit disposed outdoors, and an integral type in which both the indoor unit and the outdoor unit are disposed in one housing.

The indoor unit of the air conditioner includes a heat exchanger for exchanging refrigerant and air, a blower fan for flowing air, and a motor for driving the blower fan to cool or heat the room.

The indoor unit of the air conditioner may have a discharge air flow control means for discharging cooled or heated air in various directions through the heat exchanger. In general, such a discharge airflow control means is composed of a vertical or horizontal blade provided at the discharge port, and a driving device for rotationally driving the same. That is, the indoor unit of the air conditioner controls the direction of the discharge airflow by adjusting the rotation angle of the blade.

According to the discharge airflow control structure using such a blade, the amount of discharged air is reduced because the air flow is obstructed by the blades, and the flow noise may be increased due to the turbulence generated around the blades. In addition, since the rotation shaft of the blade is provided in a straight line, the shape of the discharge port is also limited to a straight line.

One aspect of the present invention discloses an indoor unit of an air conditioner capable of controlling a discharge air flow without a blade structure.

Another aspect of the present invention provides an air conditioner capable of preventing the air discharged from the discharge port from being re-sucked into the suction port.

Another aspect of the present invention provides an air conditioner capable of preventing dew from forming inside by preventing the air discharged from the discharge port from being re-sucked into the suction port.

Another aspect of the present invention provides an air conditioner capable of improving the sensible performance by preventing the air discharged from the discharge port from being re-sucked into the suction port, thereby increasing the distance that the discharged air can reach.

Another aspect of the present invention provides an air conditioner capable of increasing air conditioning efficiency by preventing air discharged from a discharge port from being re-sucked into an intake port.

Another aspect of the present invention discloses an air conditioner including a suction guide or a control box for smoothing the flow of air toward the inside of the air conditioner.

According to an aspect of the present invention, an air conditioner includes a housing having at least one inlet and at least one outlet; and a main fan that sucks air from the at least one inlet and discharges it to the at least one outlet; at least one auxiliary fan provided to change the direction of the discharge air flow discharged from the at least one discharge port by sucking air around the discharge port; and a guide passage for guiding the air sucked by the at least one auxiliary fan. includes

The housing includes a lower housing having the at least one intake port and the at least one discharge port, and an intermediate housing coupled to an upper side of the lower housing, and the guide passage is formed between the intermediate housing and the lower housing. can

The housing may include at least one inlet for sucking air around the at least one outlet into the guide passage, and at least one outlet for discharging air from the guide passage.

The at least one inlet may be positioned outside the at least one outlet in a radial direction, and the at least one outlet may be positioned outside the at least one outlet in a circumferential direction.

The guide flow path includes at least one first flow path provided on the radially outer side of the discharge port for guiding air in a circumferential direction, and at least one second flow path for guiding air radially inward from the at least one first flow path. may include

The at least one outlet may include a plurality of outlets arranged to be spaced apart from each other in a circumferential direction, and the at least one second flow path may be formed between the plurality of outlets.

The at least one auxiliary fan includes a plurality of auxiliary fans, and the at least one first flow path and the at least one second flow path have a plurality of first flow paths and a plurality of second flow paths corresponding to the plurality of auxiliary fans, respectively. Euros may be included.

The housing may include at least one partition for partitioning the plurality of first flow paths from each other.

Each of the plurality of first flow paths may be symmetrical in a circumferential direction with respect to a corresponding auxiliary fan.

The housing is at least provided at a point where the at least one first flow path and the at least one second flow path meet to convert a direction of air flowing in the at least one first flow path to the at least one second flow path. It may include one guide part.

The housing may include at least one bridge formed between the plurality of outlets to form the at least one second flow path.

The air conditioner may include at least one fan case accommodating the at least one auxiliary fan, and the at least one fan case may be provided on the at least one bridge.

The air conditioner may include a display unit for displaying information, and the display unit may be mounted on the at least one bridge.

Each of the at least one outlet and the at least one inlet may have an arc shape.

According to another aspect of the present invention, an air conditioner includes a housing having an inlet and an outlet; and a heat exchanger provided inside the housing; and by sucking air from the inlet and exchanging the sucked air with the heat exchanger, a main fan for discharging to the outlet; and a drain tray provided to collect condensed water generated in the heat exchanger. The drain tray may include a drain tray outlet through which air discharged to the outlet passes, and a discharge guide rib provided at the drain tray outlet.

The discharge guide rib may include at least one of a first discharge guide rib extending in a circumferential direction and a second discharge guide rib extending in a radial direction.

The housing may include a housing discharge guide rib provided to extend in a radial direction to correspond to the second discharge guide rib.

According to another aspect of the present invention, an air conditioner includes a housing having an inlet and an outlet; and a heat exchanger provided inside the housing; and sucking air from the inlet and transferring the sucked air to the heat exchanger. a main fan for discharging heat through the outlet; and a drain tray provided to collect condensed water generated in the heat exchanger and having an opening through which the air sucked into the inlet passes; and a control box provided on a radially outer side of the opening to accommodate the electrical components and having a curved surface to correspond to the opening. includes

The air conditioner may include a suction guide coupled to the suction port having a suction passage for guiding air sucked through the suction port to the main fan.

The control box may be disposed between the drain tray and the suction guide.

According to the spirit of the present invention, the indoor unit of the air conditioner may control the discharge airflow by sucking air around the discharge port without a blade.

According to the spirit of the present invention, since the indoor unit of the air conditioner controls the discharge air flow without blades, the reduction in the discharge amount due to the obstruction by the blades can be reduced.

According to the spirit of the present invention, since the indoor unit of the air conditioner controls the discharge air flow without blades, flow noise can be reduced.

According to the spirit of the present invention, the discharge port of the indoor unit of the air conditioner may have various shapes, such as a circular shape and a curved shape, instead of a conventional straight shape.

According to the spirit of the present invention, the air conditioner can prevent the air discharged from the discharge port from being re-sucked into the suction port.

According to the spirit of the present invention, the air conditioner prevents the air discharged from the discharge port from being re-sucked into the suction port, thereby preventing dew from forming inside.

According to the spirit of the present invention, the air conditioner can improve the sensible performance by increasing the distance that the discharged air can reach.

According to the spirit of the present invention, the air conditioner can increase heating and cooling efficiency.

According to the spirit of the present invention, in the air conditioner, the flow path of the air sucked into the suction guide is improved, so that the flow rate of the air is increased and the noise can be reduced.

According to the spirit of the present invention, the air conditioner includes a control box for improving the air flow, so that the air flow rate is increased and the noise is reduced.

1 is a perspective view illustrating an indoor unit of an air conditioner according to a first embodiment of the present invention;
Fig. 2 is a side cross-sectional view of an indoor unit of the air conditioner of Fig. 1;
FIG. 3 is an enlarged view of part 'O' of FIG. 2;
Fig. 4 is a plan sectional view taken along line I-I of Fig. 2;
5 is a plan cross-sectional view taken along the line II-II of FIG.
6 is a block diagram illustrating a control system of the air conditioner according to the first embodiment of the present invention.
7 is a side cross-sectional view showing an indoor unit of the air conditioner according to the second embodiment of the present invention;
8 is a side cross-sectional view illustrating an indoor unit of an air conditioner according to a third embodiment of the present invention;
9 is a plan sectional view showing an indoor unit of an air conditioner according to a fourth embodiment of the present invention;
10 is a plan sectional view showing an indoor unit of an air conditioner according to a fifth embodiment of the present invention;
11 is a perspective view illustrating an indoor unit of an air conditioner according to a sixth embodiment of the present invention;
Fig. 12 is a side cross-sectional view of an indoor unit of the air conditioner of Fig. 11;
13 is a perspective view illustrating an indoor unit of an air conditioner according to a seventh embodiment of the present invention;
Fig. 14 is a side cross-sectional view showing a part of an indoor unit of the air conditioner of Fig. 13;
15 is a view showing another example of the inlet of the airflow control device of the present invention in comparison with FIG. 4, and shows an example in which the inlet is configured with a multi-hole.
16 and 17 are views showing another example of the inlet of the airflow control device of the present invention in comparison with FIG. 4, showing an example in which the width of the inlet is variable.
FIG. 18 is a view showing another example of an inlet of the airflow control device of the present invention in comparison with FIG. 4, and shows an example in which the inlet is composed of a plurality of slits extending in the radial direction.
19 is a view showing another example of the inlet of the airflow control device of the present invention in comparison with FIG. 4, and shows an example in which the inlet is composed of a plurality of slits.
FIG. 20 is a cross-sectional view illustrating a main part of an indoor unit of the air conditioner according to the eighth embodiment of the present invention in comparison with FIG. 7;
FIG. 21 is a cross-sectional view illustrating a main part of an indoor unit of an air conditioner according to a ninth embodiment of the present invention compared with FIG. 20;
FIG. 22 is a cross-sectional view illustrating a main part of an indoor unit of an air conditioner according to a tenth embodiment of the present invention in comparison with FIG. 20;
FIG. 23 is a cross-sectional view illustrating a main part of an indoor unit of an air conditioner according to an eleventh embodiment of the present invention in comparison with FIG. 20;
FIG. 24 is a cross-sectional view illustrating a main part of an indoor unit of an air conditioner according to a twelfth embodiment of the present invention compared with FIG. 21;
FIG. 25 is a cross-sectional view illustrating a main part of an indoor unit of an air conditioner according to a thirteenth embodiment of the present invention in comparison with FIG. 21;
26 is a perspective view of an air conditioner according to another embodiment of the present invention.
FIG. 27 is a view of the air conditioner shown in FIG. 26 as viewed from the bottom;
28 is an exploded perspective view of the air conditioner shown in FIG. 26 .
29 is a side cross-sectional view taken along line I-I shown in FIG. 27;
30 is a view showing another embodiment of the air conditioner shown in FIG.
FIG. 31 is a view showing another embodiment of the air conditioner shown in FIG. 26 .
FIG. 32 is a view showing another embodiment of the air conditioner shown in FIG. 26 .
Fig. 33 is a perspective view of the drain tray shown in Fig. 28;
34 is a view showing the discharge guide rib shown in FIG. 33 unfolded.
35 is a view showing another embodiment of the discharge guide rib shown in FIG.
FIG. 36 is a view showing another embodiment of the discharge guide rib shown in FIG. 33 .
FIG. 37 is an enlarged view of a portion 'O' shown in FIG. 29 .
38 is an exploded perspective view showing the middle housing and the lower housing shown in FIG. 28 .
FIG. 39 is a view showing the flow of air by the airflow control device of the air conditioner shown in FIG. 26 .
40 is a cross-sectional view illustrating a portion in which the display unit of the air conditioner shown in FIG. 26 is provided.
FIG. 41 is a view showing an outlet of the air conditioner shown in FIG. 26 .
42 is a view of another embodiment of the outlet shown in FIG. 41 as viewed from the radial direction of the outlet.
FIG. 43 is a view of another embodiment of the outlet shown in FIG. 41 as viewed from the radial direction of the outlet.
44 is a perspective view showing another embodiment of the outlet shown in FIG.
45 is a perspective view showing another embodiment of the outlet shown in FIG.
46 is a view from the bottom of the air conditioner with the grill shown in FIG. 26 removed.
FIG. 47 is a view obliquely looking from the lower side of part 'A' shown in FIG. 46 .
FIG. 48 is a view obliquely looking from the lower side of part 'B' shown in FIG. 46 .
49 is a view showing another embodiment of the lower housing shown in FIG. 48 .
FIG. 50 is a view showing another embodiment of the lower housing shown in FIG. 48 .
51 is a cross-sectional view taken along the line II-II shown in FIG. 29 .
FIG. 52 is a view of the intermediate housing shown in FIG. 28 as viewed from the bottom;
53 is a view showing another embodiment of the intermediate housing shown in FIG. 51 .
Fig. 54 is a view showing another embodiment of the intermediate housing shown in Fig. 51;
FIG. 55 is a view showing another embodiment of the intermediate housing shown in FIG. 51 .
FIG. 56 is a view showing another embodiment of the lower housing shown in FIG. 51 .
57 is a view showing another embodiment of the air conditioner shown in FIG.
58 is a view showing another embodiment of the air conditioner shown in FIG. 26 .
59 is a perspective view illustrating an indoor unit of an air conditioner according to another embodiment of the present invention;
Fig. 60 is a side cross-sectional view taken along line II shown in Fig. 59;
61 is an exploded perspective view of an air conditioner according to another embodiment of the present invention;
62 is an exploded perspective view of a lower housing of the air conditioner according to another embodiment of the present invention;
63 is a rear view illustrating a state in which the second lower housing of the air conditioner according to another embodiment of the present invention is removed.
FIG. 64 is an enlarged view of a portion of FIG. 60;
65 is a rear perspective view in a state in which the suction panel of the air conditioner according to another embodiment of the present invention is removed;
66 is a partial cross-sectional view of a suction guide of the air conditioner according to still another embodiment of the present invention.
67 is an exploded perspective view of a partial configuration of an air conditioner according to another embodiment of the present invention;
68 is a partial cross-sectional view of a suction guide of an air conditioner according to still another embodiment of the present invention.
69 is an exploded perspective view of a control box according to an embodiment of the present invention.
70 is a plan view of a printed circuit board according to an embodiment of the present invention;
71 is a plan view of a printed circuit board assembled to a lower case of a control box according to an embodiment of the present invention;
72 to 75 are views illustrating a state in which a wire is mounted on a wire holder according to an embodiment of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail.

1 is a perspective view illustrating an indoor unit of an air conditioner according to a first embodiment of the present invention. FIG. 2 is a side cross-sectional view of an indoor unit of the air conditioner of FIG. 1 . FIG. 3 is an enlarged view of part 'O' of FIG. 2 . FIG. 4 is a plan sectional view taken along line I-I of FIG. 2 . FIG. 5 is a plan sectional view taken along line II-II of FIG. 2 . The side cross-sectional view of FIG. 2 is strictly a rotational cross-section taken along the line III-III of FIG. 3 .

An indoor unit of the air conditioner according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 5 .

The indoor unit 1 of the air conditioner may be installed on the ceiling (C). At least a portion of the indoor unit 1 of the air conditioner may be embedded in the ceiling (C).

The indoor unit 1 of the air conditioner includes a housing 10 having an inlet 20 and an outlet 21 , a heat exchanger 30 provided inside the housing 10 , and a blowing fan 40 for flowing air. ) is included.

The housing 10 may have an approximately circular shape when viewed in a vertical direction. The housing 10 may include an upper housing 11 , an intermediate housing 12 coupled to a lower portion of the upper housing 11 , and a lower housing 13 coupled to a lower portion of the intermediate housing 12 . At least a portion of the upper housing 11 and the intermediate housing 12 may be embedded in the ceiling (C).

A suction port 20 through which air is sucked may be formed in the central portion of the lower housing 13 , and a discharge port 21 through which air is discharged may be formed on the radially outer side of the suction port 20 . The discharge port 21 may have a substantially circular shape when viewed in a vertical direction. Specifically, when viewed in the vertical direction, the discharge port 21 may include a plurality of arc shapes spaced apart from each other by a bridge 70d to be described later.

With this structure, the indoor unit 100 of the air conditioner may suck in air from the lower side, cool and heat it, and then discharge it to the lower side again.

The lower housing 13 may have a Coanda curved portion 14 for guiding the air discharged through the discharge port 21 . The Coanda curved portion 14 may induce the airflow discharged through the outlet 21 to flow in close contact with the Coanda curved portion 14 .

A grill 15 may be coupled to the lower surface of the lower housing 13 to filter dust from the air sucked into the suction port 20 .

The heat exchanger 30 may include a tube 32 ( FIG. 5 ) through which the refrigerant flows, and a header 31 ( FIG. 5 ) that is connected to an external refrigerant pipe to supply or recover the refrigerant to the tube 32 . A heat exchange fin may be provided in the tube 32 to enlarge a heat dissipation area.

The heat exchanger 30 may have an approximately circular shape when viewed in a vertical direction. Specifically, the tube 32 of the heat exchanger 30 may have a circular shape. The heat exchanger 30 is placed on the drain tray 16 so that condensed water generated in the heat exchanger 30 may be collected in the drain tray 16 .

The blowing fan 40 may be provided inside the heat exchanger 30 in a radial direction. The blowing fan 40 may be a centrifugal fan that sucks air in an axial direction and discharges it in a radial direction. A blowing motor 41 for driving the blowing fan 40 may be provided in the indoor unit 1 of the air conditioner. The blowing fan 30 may be referred to as a main fan, and the airflow control fan 60 to be described later may be referred to as an auxiliary fan.

With this configuration, the indoor unit 1 of the air conditioner may suck in air from the room, cool it, and then discharge it to the room, or it may suck in air and heat it and then discharge it into the room.

The indoor unit 1 of the air conditioner further includes an airflow control device 50 for controlling the discharge airflow.

The airflow control device 50 may control the direction of the discharge airflow by changing the pressure by sucking air around the discharge port 21 . In addition, the airflow control device 50 may control the intake amount of air around the discharge port 21 . That is, the airflow control device 50 may control the direction of the discharge airflow by controlling the intake amount of air around the discharge port 21 .

Here, controlling the direction of the discharge airflow means controlling the angle of the discharge airflow.

When the airflow control device 50 sucks air around the discharge port 21 , the airflow control device 50 may suction air from one side of the traveling direction of the discharge airflow.

That is, as shown in FIG. 3 , if the traveling direction of the discharge airflow when the airflow control device 50 is not operated is in the A1 direction, the airflow control device 50 operates to suck air from one side of the A1 direction. By doing (S), the advancing direction of the discharge airflow can be switched to the A2 direction.

At this time, the switching angle may be adjusted according to the suction amount. In other words, if the suction amount is small, it is converted to a small angle, and if the suction amount is increased, the traveling direction may be switched to a large angle.

The airflow control device 50 may discharge the sucked air in one side of the advancing direction A1 of the discharge airflow (D). In particular, the airflow control device 50 may discharge air in a direction opposite to the suction direction. Accordingly, the angle of the discharge airflow can be made larger, and the airflow control can be performed more smoothly.

The airflow control device 50 may suck in air from the radially outer side of the discharge port 21 (or from the upper side of the discharge airflow). As described above, since the airflow control device 50 sucks air from the radially outer side of the discharge port 21 , the discharge airflow may spread widely from the radially central portion of the discharge port 21 to the radially outer side.

The airflow control device 50 includes an airflow control fan 60 generating suction force for sucking air around the outlet 21 , an airflow control motor 61 for driving the airflow control fan 60 , and the airflow control fan Includes a guide flow path 70 for guiding the air sucked by (60).

The airflow control fan 60 may be accommodated in the fan case 62 . In the present embodiment, three airflow control fans 60 are provided at an angle of 120 degrees, but the present invention is not limited thereto, and the number and arrangement of the airflow control fans 60 may be variously designed.

In addition, although a centrifugal fan is used as the airflow control fan 60 in the present embodiment, the present invention is not limited thereto, and various fans such as an axial fan, a cross-flow fan, and a mixed-flow fan may be used according to design specifications.

The guide flow path 70 connects the inlet 71 for sucking air around the outlet 21 and the outlet 72 for discharging the sucked air. If the flow path connecting the suction port 20 and the discharge port 21 is referred to as a main flow path, it can be said that the guide flow path 70 is branched from the main flow path.

The inlet 71 may be formed in the Coanda curved portion 14 of the lower housing 13 . Accordingly, the discharge airflow bent toward the inlet 71 of the lower housing 13 by the suction force of the control fan 60 may flow along the surface of the Coanda curved portion 14 .

The inlet 71 may be composed of a plurality of slits having an arc shape. The plurality of slits may be arranged to be spaced apart from each other by a predetermined distance along the circumferential direction.

The outlet 72 may be located around the outlet 21 on the opposite side of the inlet 71 . Specifically, the outlet 72 may be formed in the fan case 62 .

With this configuration, as described above, the airflow control device 50 may discharge the sucked air in one side of the advancing direction A1 of the discharge airflow. In particular, the airflow control device 50 may discharge air in a direction opposite to the suction direction, thereby increasing the angle of the discharge airflow and further smoothing the airflow control.

The guide flow path 70 is formed in a circumferential direction on the outside of the housing 10 and includes a first flow path 70a communicating with the inlet 71, and a second flow path extending radially inward from the first flow path 70a ( 70b) and a third flow path 70c formed inside the fan case 62 may be included. The second flow path 70b may be formed inside the bridge 70d crossing the discharge port 21 .

Accordingly, the air sucked in through the inlet 71 may be discharged through the outlet 72 through the first passage 70a, the second passage 70b, and the third passage 70c.

However, the structure of the guide passage 70 is only one example, and the guide passage 70 is sufficient only to connect the inlet 71 and the outlet 72 , and there is no limitation in the structure, shape, and arrangement of the guide passage 70 .

With this configuration, the indoor unit of the air conditioner according to the embodiment of the present invention can control the discharge air flow without the blade structure, compared to the conventional structure in which a blade is provided at the discharge port and the discharge air flow is controlled by the rotation of the blade. Accordingly, since there is no obstruction by the blade, the discharge amount can be increased and the flow noise can be reduced.

In addition, the discharge port of the indoor unit of the conventional air conditioner had to have a straight shape in order to rotate the blade, but the discharge port of the indoor unit of the air conditioner according to the embodiment of the present invention may be provided in a circular shape. Since the housing and heat exchanger can also be provided in a circular shape, not only can the aesthetics be improved with a differentiated design, but also, considering that the blower fan has a circular shape in general, the flow of air flow occurs naturally and pressure loss is reduced As a result, the cooling or heating performance of the air conditioner may be improved.

6 is a block diagram illustrating a control system of the air conditioner according to the first embodiment of the present invention.

The air conditioner includes a control unit 92 for controlling overall operation, an input unit 90 for receiving an operation command, an outdoor temperature sensor 91a for detecting an outdoor temperature, and an indoor temperature sensor 91b for detecting an indoor temperature. And, an evaporator temperature sensor 91c for detecting the evaporator temperature, a display unit 83 for externally displaying various information, a compressor driving unit 94 for driving the compressor 95, an electromagnetic expansion valve 96, It may include a blower fan driving unit 97 for driving the blowing fan 40 , and an airflow control fan driving unit 98 for driving the airflow control fan 60 .

The control unit 92 receives various operation commands and temperature information from the input unit 90, the outdoor temperature sensor 91a, the indoor temperature sensor 92b, and the evaporator temperature sensor 91c, and based on this, the display unit ( 93 , the compressor driving unit 94 , the electromagnetic expansion valve 96 , the blower fan driving unit 97 , and the airflow control fan driving unit 98 may transmit a control command.

The airflow control fan driving unit 98 may control whether the airflow control motor 61 is driven and the speed according to a control command from the control unit 92 . Accordingly, it is possible to control the intake amount of air around the discharge port 21 and control the direction of the discharge air flow.

7 is a side cross-sectional view illustrating an indoor unit of an air conditioner according to a second exemplary embodiment of the present invention. An indoor unit of an air conditioner according to a second embodiment of the present invention will be described with reference to FIG. 7 . The same reference numerals are assigned to the same components as those of the first embodiment, and descriptions thereof may be omitted.

The airflow control device 250 of the indoor unit 200 of the air conditioner may suck in air around the discharge port 21 (S) and discharge the sucked air into the housing 10 (D).

In the present embodiment, the airflow control device 250 discharges the air sucked in from the vicinity of the discharge port 21 to the upstream side of the heat exchanger 30 in the airflow direction. The discharged air is finally discharged into the room through the discharge port 21 after being cooled or heated again through the heat exchanger 30 .

As described above, the inlet 271 for sucking air around the outlet 21 is formed in the lower housing 13 so as to discharge the air sucked from the vicinity of the outlet 21 into the inside of the housing 10, The outlet 272 for discharging is formed in the housing 10 .

The guide passage 270 is formed to connect the inlet 271 and the outlet 272 . The guide flow path 270 includes a first flow path 270a formed in a circumferential direction and communicating with the inlet 271, a second flow path 270b extending radially inward from the first flow path 270a, and a fan case ( It may include a third flow path 270c formed inside the 62 , and a fourth flow path 270d extending from the third flow path 270c to the inside of the housing 10 and communicating with the outlet 272 .

Accordingly, the air sucked in through the inlet 271 may be discharged through the outlet 272 through the first passage 270a, the second passage 270b, the third passage 270c, and the fourth passage 270d. have.

However, the structure of the guide passage 270 is only one example, and the guide passage 270 is sufficient only to connect the inlet 271 and the outlet 272 , and there is no limitation in the structure, shape, and arrangement of the guide passage 270 .

8 is a side cross-sectional view illustrating an indoor unit of an air conditioner according to a third embodiment of the present invention. An indoor unit of an air conditioner according to a third embodiment of the present invention will be described with reference to FIG. 8 . The same reference numerals may be assigned to the same components as in the above-described embodiments, and descriptions thereof may be omitted.

The airflow control device 350 of the indoor unit 300 of the air conditioner does not suck air from the outside in the radial direction of the discharge port 21 (or from the upper side of the discharge airflow), but rather inside the discharge port 21 (or It may be provided to suck in air) from the lower side of the discharge airflow. To this end, the inlet 371 for sucking air around the outlet 21 may be provided radially inside the outlet 21 .

Air sucked in through the inlet 371 may be discharged to the outlet 372 through the guide passage 370 (D).

As described above, since the airflow control device 350 sucks air from the radially inner side of the discharge port 21 (S), the discharge airflow may be concentrated from the radially outer side of the discharge port 21 to the radially central side.

9 is a plan sectional view illustrating an indoor unit of an air conditioner according to a fourth embodiment of the present invention. An indoor unit of an air conditioner according to a fourth embodiment of the present invention will be described with reference to FIG. 9 . The same reference numerals are assigned to the same components as in the above-described embodiments, and descriptions thereof may be omitted.

The indoor unit 400 of the air conditioner includes a housing 410 having an inlet and an outlet 421 , a heat exchanger 430 provided inside the housing 410 , and a blowing fan 440 for flowing air. do.

The housing 410 may have a substantially rectangular shape when viewed in a vertical direction. A suction port through which air is sucked may be formed in the central portion of the bottom surface of the housing 410 , and a discharge port 421 through which air is discharged may be formed at a radially outer side of the bottom surface of the suction port.

The discharge port 421 may have a substantially rectangular shape when viewed in a vertical direction, and the corner portion 421a may be rounded. The discharge port of the indoor unit of the conventional air conditioner has no choice but to have a straight shape to rotate the blade. However, since the discharge port 421 according to the embodiment of the present invention does not have a blade structure, the rounded corner portion 421a is formed in this way. can have

Unlike the present embodiment, the outlet 421 may have various polygonal shapes, such as a triangle, a pentagon, and a hexagon, in addition to a rectangular shape.

The heat exchanger 430 may include a tube 432 through which the refrigerant flows, and a header 431 that is connected to an external refrigerant pipe to supply or recover refrigerant to the tube 432 , and the radius of the heat exchanger 430 . A blowing fan 440 may be provided inside the direction.

10 is a plan sectional view illustrating an indoor unit of an air conditioner according to a fifth embodiment of the present invention. An indoor unit of an air conditioner according to a fifth embodiment of the present invention will be described with reference to FIG. 10 . The same reference numerals are assigned to the same components as in the above-described embodiments, and descriptions thereof may be omitted.

The indoor unit 500 of the air conditioner includes a housing 510 having an inlet and an outlet 521 , a heat exchanger 530 provided inside the housing 510 , and a blowing fan 540 for flowing air. do.

The housing 510 may have a substantially rectangular shape when viewed in a vertical direction. A suction port through which air is sucked may be formed in the central portion of the bottom surface of the housing 510 , and a discharge port 521 through which air is discharged may be formed at a radially outer side of the bottom surface of the housing 510 .

The discharge port 521 has a generally rectangular shape when viewed in a vertical direction, and each side may be formed in a curved shape instead of a straight line. The discharge port of the indoor unit of the conventional air conditioner has no choice but to have a straight shape in order to rotate the blade, but the discharge port 521 according to the embodiment of the present invention does not have a blade structure, so it can be formed in a curved shape as described above. .

The heat exchanger 530 may include a tube 532 through which the refrigerant flows, and a header 531 that is connected to an external refrigerant pipe to supply or recover refrigerant to the tube 532 , and the radius of the heat exchanger 530 . A blowing fan 540 may be provided inside the direction.

11 is a perspective view illustrating an indoor unit of an air conditioner according to a sixth embodiment of the present invention. 12 is a side cross-sectional view of an indoor unit of the air conditioner of FIG. 11 .

An indoor unit of an air conditioner according to a sixth embodiment of the present invention will be described with reference to FIGS. 11 and 12 . The same reference numerals are assigned to the same components as in the above-described embodiments, and descriptions thereof may be omitted.

The indoor unit 600 of the air conditioner may be installed on the wall (W). The indoor unit 600 of the air conditioner includes a housing 610 having an inlet 620 and an outlet 621 , a heat exchanger 630 provided inside the housing 610 , and a blowing fan 640 for flowing air. ) is included.

The housing 610 may include a rear housing 612 coupled to the wall W, and a front housing 611 coupled to the front of the rear housing 612 .

A suction port 620 through which air is sucked may be formed on the front and upper surfaces of the front housing 611 , and a discharge port 621 through which air is discharged may be formed at a lower portion of the front housing 611 . Accordingly, the indoor unit 600 of the air conditioner may suck in air from the front and the upper side, cool and heat it, and then discharge it to the lower side.

Like the above-described embodiments, the discharge port 621 may have various shapes, such as a circular shape, a polygonal shape, and a curved shape. The housing 610 may have a Coanda curved portion 614 for guiding the air discharged through the discharge port 621 . The Coanda curved portion 614 may induce the airflow discharged through the outlet 621 to flow in close contact with the Coanda curved portion 614 . The blowing fan 640 may be a cross flow fan.

The indoor unit 600 of the air conditioner further includes an airflow control device 650 that controls the direction of the discharge airflow by changing the pressure by sucking air around the discharge port 21 .

The airflow control device 650 includes an airflow control fan 660 generating suction force for sucking air around the outlet 621 , an airflow control motor 661 for driving the airflow control fan 660 , and the airflow control fan A guide flow path 670 for guiding the air sucked by the 660 may be included.

The guide flow path 70 connects the inlet 671 for sucking air around the outlet 621 and the outlet 672 for discharging the sucked air. The inlet 671 may be formed in the Coanda curved portion 614 of the housing 610 .

13 is a perspective view illustrating an indoor unit of an air conditioner according to a seventh exemplary embodiment of the present invention. 14 is a side cross-sectional view illustrating a part of an indoor unit of the air conditioner of FIG. 13 .

An indoor unit of an air conditioner according to a seventh embodiment of the present invention will be described with reference to FIGS. 13 and 14 . The same reference numerals are assigned to the same components as in the above-described embodiments, and descriptions thereof may be omitted.

The indoor unit 700 of the air conditioner may be provided to stand on the floor surface F. The indoor unit 700 of the air conditioner includes a housing 710 having an inlet 720 and an outlet 721 , a heat exchanger 730 provided inside the housing 710 , and a blowing fan 740 for flowing air. ) is included.

The housing 710 may include a front housing 711 , an intermediate housing 712 , and a rear housing 713 . A suction port 720 to be sucked in may be formed on an upper surface, a side surface, and a rear surface of the rear housing 713 , and an outlet 721 through which air is discharged may be formed on the front surface of the front housing 611 . Accordingly, the indoor unit 700 of the air conditioner may suck in air from the upper side, the side, and the rear, cool and heat it, and then discharge the air to the front.

Like the above-described embodiments, the discharge port 721 may have various shapes, such as a circular shape, a polygonal shape, and a curved shape. The housing 710 may have a Coanda curved portion 714 for guiding the air discharged through the discharge port 721 . The Coanda curved portion 714 may induce the airflow discharged through the outlet 7621 to flow in close contact with the Coanda curved portion 714 . The blowing fan 740 may be a four-flow fan or an axial fan.

The indoor unit 700 of the air conditioner further includes an airflow control device 750 for controlling the direction of the discharge airflow by changing the pressure by sucking air around the discharge port 721 .

The airflow control device 750 includes an airflow control fan 760 that generates a suction force for sucking air around the outlet 621 , an airflow control motor 761 for driving the airflow control fan 760 , and an airflow control fan A guide flow path 770 for guiding the air sucked by the 760 may be included.

The guide flow path 770 connects the inlet 771 for sucking air around the outlet 721 and the outlet 772 for discharging the sucked air. The inlet 671 may be formed in the Coanda curved portion 714 of the housing 610 .

15 is a view showing another example of the inlet of the airflow control device of the present invention in comparison with FIG. 4, and is a view showing an example in which the inlet is configured with a multi-hole.

Referring to FIG. 15 , the inlet 171 of the airflow control device may be formed by forming a group of a plurality of small holes 172 . That is, a plurality of small holes 172 form a group to form a single arc-shaped slit, and at least one of these slits may gather to form an inlet 171 .

In this way, since the inlet 171 is formed of a plurality of small holes 172 , it is possible to prevent dust, foreign matter, etc. from being sucked through the inlet 171 .

16 and 17 are views showing another example of the inlet of the airflow control device of the present invention in comparison with FIG. 4 and showing an example in which the inlet has a variable width. 16 is a state in which the width of the inlet is relatively widened, and FIG. 17 is a state in which the width of the inlet is relatively narrowed.

16 and 17 , the inlet 173 of the airflow control device may include at least one arc-shaped slit 174, and the width W of the slit 174 may be variable. . That is, the opening degree of the slit 174 may be adjusted.

To this end, the airflow control device may have a shielding plate 175 that expands and contracts to adjust the opening degree of the slit 174 . As shown in FIG. 16, when the shielding plate 175 is reduced to the minimum, the width Wmax of the slit 174 becomes the maximum, and as shown in FIG. 17, when the shielding plate 175 is expanded to the maximum, the slit ( 174) can be minimized.

With the above configuration, the suction flow rate through the inlet 173 may be adjusted by adjusting the opening degree of the inlet 173 , and accordingly, the direction of the discharge airflow may be controlled.

FIG. 18 is a view showing another example of an inlet of the airflow control device of the present invention in comparison with FIG. 4, and shows an example in which the inlet is configured with a plurality of slits extending in the radial direction.

Referring to FIG. 18 , the inlet 176 of the airflow control device may be formed by gathering a plurality of slits 177 formed to extend in a radial direction. The plurality of slits 177 may be arranged to be spaced apart from each other by a predetermined distance along the circumferential direction.

With this configuration, resistance when sucking air around the outlet 21 can be reduced, and accordingly, the power required for suction, that is, the number of rotations of the fan can be reduced.

19 is a view showing another example of the inlet of the airflow control device of the present invention in comparison with FIG. 4, and is a view showing an example in which the inlet is composed of a plurality of slits.

As shown in FIG. 19 , the inlet 178 of the airflow control device may include a plurality of slits 179a and 179b having an arc shape.

The plurality of slits 179a and 179b may include an inner slit 179a disposed relatively radially inside and an outer slit 179b relatively disposed radially outside. The inner slit 179a and the outer slit 179b may be spaced apart from each other by a predetermined interval.

With this configuration, it can help to precisely control or control the suction flow rate stably.

The plurality of slits 179a and 179b may have the same width or different widths. Also, unlike the present embodiment, the plurality of slits may be composed of three or more slits.

That is, the number, width, and spacing of the plurality of slits 179a and 179b may be variously designed as needed.

FIG. 20 is a cross-sectional view illustrating a main part of an indoor unit of an air conditioner according to an eighth embodiment of the present invention in comparison with FIG. 7 .

An indoor unit of an air conditioner according to an eighth embodiment of the present invention will be described with reference to FIG. 20 . The same reference numerals may be assigned to the same components as in the above-described embodiments, and descriptions thereof may be omitted.

Unlike the above-described embodiments, the airflow control device 450 may control the direction of the discharge airflow by blowing the air around the discharge port 21 to change the pressure. That is, the airflow control device 450 of the above-described embodiments controls the direction of the discharge airflow by forming a negative pressure around the discharge port 21 , whereas the airflow control device 450 of this embodiment has a positive pressure around the discharge port 21 . It is possible to control the direction of the discharge air flow by forming

The airflow control device 450 may control the amount of air blown around the outlet 21 . That is, the airflow control device 450 may control the direction of the discharge airflow by controlling the amount of air blowing around the discharge port 21 .

Here, the control of the direction of the discharge airflow means controlling the angle of the discharge airflow. That is, it means to control whether the discharge airflow is concentrated or spread widely.

When blowing air around the discharge port 21 , the airflow control device 450 may blow air from one side of the traveling direction of the discharge airflow.

That is, as shown in FIG. 20 , if the traveling direction of the discharge airflow when the airflow control device 450 is not operated is in the A1 direction, the airflow control device 450 operates to blow air to one side of the A1 direction. By doing (B), the advancing direction of the discharge airflow can be switched to the A2 direction.

The airflow control device 450 may blow air from a radially inner side of the discharge port 21 (or from a lower side of the discharge airflow). That is, if the discharge airflow is relatively intensively discharged when the airflow control device 450 is not operated, the discharge airflow may be discharged relatively widely spread outwardly in the radial direction when the airflow control device 450 is operated.

The airflow control device 450 includes an airflow control fan 460 generating a blowing force for blowing air around the outlet 21 , an airflow control motor 461 for driving the airflow control fan 460 , and airflow control and a guide flow path 470 for guiding air flowing by the fan 460 . The guide flow path 470 connects the air outlet 472 for blowing air around the discharge port 21 and the inlet port 471 for sucking air.

21 is a cross-sectional view illustrating a main part of an indoor unit of an air conditioner according to a ninth embodiment of the present invention compared with FIG. 20 .

An indoor unit of an air conditioner according to a ninth embodiment of the present invention will be described with reference to FIG. 21 . The same reference numerals may be assigned to the same components as in the above-described embodiments, and descriptions thereof may be omitted.

The airflow control device 550 may control the direction of the discharge airflow by changing the pressure by blowing the air around the discharge port 21 as in the eighth embodiment described above. However, unlike the above-described eighth embodiment, the airflow control device 550 may blow air from the radially outer side of the discharge port 21 (or above the discharge airflow).

That is, when the airflow control device 550 is not operated, the discharge airflow is relatively widely spread out radially outward, and when the airflow control device 550 is operated, the discharge airflow is intensively discharged relatively radially inward can be

The airflow control device 550 includes an airflow control fan 560 that generates a blowing force for blowing air around the outlet 21 , an airflow control motor 561 for driving the airflow control fan 560 , and airflow control and a guide flow path 570 for guiding air flowing by the fan 560 . The guide flow path 570 connects the air outlet 572 for blowing air around the outlet 21 and the inlet 571 for sucking air.

22 is a cross-sectional view illustrating a main part of an indoor unit of an air conditioner according to a tenth embodiment of the present invention compared with FIG. 20 .

An indoor unit of an air conditioner according to a tenth embodiment of the present invention will be described with reference to FIG. 22 . The same reference numerals may be assigned to the same components as in the above-described embodiments, and descriptions thereof may be omitted.

The airflow control device 650 may control the direction of the discharge airflow by blowing air around the discharge port 21 to change the pressure. However, unlike the airflow control device of FIGS. 20 and 21 that controls the discharge airflow by pushing the discharge airflow, the airflow control device 650 may control the discharge airflow by pulling the discharge airflow.

To this end, a Coanda curved portion 614 is formed around the discharge port 21 , and the airflow control device 650 may discharge the auxiliary airflow X in a tangential direction of the Coanda curved portion 614 .

The Coanda curved part 614 may induce the auxiliary airflow X discharged through the outlet 672 to flow along the surface of the Coanda curved part 614 by the Coanda effect. The Coanda curved portion 614 may be integrally formed with the housing 10 such as the lower housing 13 .

The Coanda curved portion 614 may have a substantially convex shape toward the discharge port 21 . Accordingly, the auxiliary airflow X flowing along the Coanda curved portion 614 may increase in speed and decrease in pressure. Accordingly, the main airflow discharged to the discharge port 21 may be drawn toward the auxiliary airflow X, so that the direction may be switched from the A1 direction to the A2 direction.

The direction of the auxiliary airflow X discharged through the outlet 672 may be a tangential direction of the Coanda curved portion 614 and approximately the same direction as the direction of the main airflow.

The guide flow path 670 for guiding the auxiliary airflow X connects the inlet 671 for sucking air and the outlet 672 for discharging the sucked air. If the flow path connecting the suction port 20 and the discharge port 21 is referred to as a main flow path, it can be said that the guide flow path 70 is branched from the main flow path.

The outlet 672 is formed in the vicinity of the Coanda curved portion 614 so that the auxiliary airflow X is discharged in the tangential direction of the Coanda curved portion 614 . Specifically, the outlet 672 may be formed between the inner peripheral surface 22 of the outlet 21 and the Coanda curved portion 614 .

The airflow control device 650 may blow the auxiliary airflow X from the radially outer side of the discharge port 21 (or above the main airflow). That is, if the main discharge airflow is relatively intensively discharged when the airflow control device 650 is not operated, the main discharge airflow may be discharged relatively widely when the airflow control device 650 is operated.

The airflow control device 650 may further include an airflow control fan 660 for blowing air to generate the auxiliary airflow X, and an airflow control motor 661 for driving the airflow control fan 660 . The airflow control fan 660 is provided separately from the main blowing fan 40, and may be provided in plurality if necessary.

The airflow control device 650 may increase the speed of the auxiliary airflow X in order to increase the force at which the auxiliary airflow X attracts the main airflow. That is, the faster the speed of the auxiliary airflow X is, the greater the pressure reduction may be, and thus the force of attracting the main airflow may be increased. The speed of the auxiliary airflow X may be at least higher than the main airflow.

The inlet 671 of the guide flow path 670 may be provided around the outlet 21 . Accordingly, the airflow control device 650 may generate the auxiliary airflow X by sucking air around the discharge port 21 .

FIG. 23 is a cross-sectional view illustrating a main part of an indoor unit of an air conditioner according to an eleventh embodiment of the present invention in comparison with FIG. 20 .

Referring to FIG. 23 , an indoor unit of an air conditioner according to an eleventh embodiment of the present invention will be described. The same reference numerals may be assigned to the same components as in the above-described embodiments, and descriptions thereof may be omitted.

Like the airflow control device 650 of FIG. 22 , the airflow control device 750 may control the discharge airflow by blowing air around the discharge port 21 to draw the discharge airflow.

However, unlike the airflow control device 650 of FIG. 22 , the airflow control device 750 may blow the auxiliary airflow X from the radially inner side of the outlet 21 (or from the lower side of the main airflow). That is, if the main discharge airflow is relatively wide and discharged when the airflow control device 750 is not operating, the main discharge airflow may be discharged relatively intensively when the airflow control device 750 is activated.

A Coanda curved portion 714 is formed around the discharge port 21 , and the airflow control device 750 may discharge the auxiliary airflow X in a tangential direction of the Coanda curved portion 714 .

The Coanda curved portion 714 may induce the auxiliary airflow X discharged through the outlet 772 to flow along the surface of the Coanda curved portion 714 in close contact with the Coanda effect due to the Coanda effect.

The Coanda curved portion 714 may have a substantially convex shape toward the discharge port 21 . Accordingly, the auxiliary airflow X flowing along the Coanda curved portion 714 may increase in speed and decrease in pressure. Accordingly, the main airflow discharged to the discharge port 21 may be drawn toward the auxiliary airflow X, so that the direction may be switched from the A1 direction to the A2 direction.

The direction of the auxiliary airflow X discharged through the outlet 772 may be a tangential direction of the Coanda curved portion 714 and approximately the same direction as the direction of the main airflow.

The guide flow path 770 for guiding the auxiliary airflow X connects the inlet 771 for sucking air and the outlet 772 for discharging the sucked air.

The outlet 772 is formed in the vicinity of the Coanda curved portion 714 so that the auxiliary airflow X is discharged in the tangential direction of the Coanda curved portion 714 . Specifically, the outlet 772 may be formed between the inner peripheral surface 22 of the outlet 21 and the Coanda curved portion 714 .

The airflow control device 750 may further include an airflow control fan 760 for blowing air to generate the auxiliary airflow X, and an airflow control motor 761 for driving the airflow control fan 760 . The airflow control fan 760 is provided separately from the main blowing fan 40, and may be provided in plurality if necessary.

FIG. 24 is a cross-sectional view illustrating a main part of an indoor unit of an air conditioner according to a twelfth embodiment of the present invention compared with FIG. 21 .

An indoor unit of an air conditioner according to a twelfth embodiment of the present invention will be described with reference to FIG. 24 . The same reference numerals may be assigned to the same components as in the above-described embodiments, and descriptions thereof may be omitted.

Like the airflow control device 650 of FIG. 22 , the airflow control device 850 may control the discharge airflow by blowing air around the discharge port 21 to draw the discharge airflow.

However, unlike the airflow control device 650 of FIG. 22 , the airflow control device 850 does not generate the auxiliary airflow X by sucking air around the outlet 21 , but air inside the housing 10 . can be sucked in to create an auxiliary airflow (X).

That is, part of the air cooled through the heat exchanger 30 is discharged to the outlet 872 through the guide flow path 870 to form the auxiliary airflow X, and the remaining part is discharged to the discharge port 21 to the main airflow can form.

A Coanda curved portion 814 is formed around the discharge port 21 , and the airflow control device 850 may discharge the auxiliary airflow X in a tangential direction of the Coanda curved portion 814 .

The guide flow path 870 for guiding the auxiliary airflow X connects the inlet 871 for sucking air and the outlet 872 for discharging the sucked air.

The airflow control device 850 may further include an airflow control fan 860 for blowing air to generate an auxiliary airflow X, and an airflow control motor 861 for driving the airflow control fan 860 .

25 is a cross-sectional view illustrating a main part of an indoor unit of an air conditioner according to a thirteenth exemplary embodiment of the present invention compared with FIG. 21 .

An indoor unit of an air conditioner according to a thirteenth embodiment of the present invention will be described with reference to FIG. 25 . The same reference numerals may be assigned to the same components as in the above-described embodiments, and descriptions thereof may be omitted.

The airflow control device 950 may control the discharge airflow by blowing air around the discharge port 21 to draw the discharge airflow like the airflow control device 750 of FIG. 23 .

However, unlike the airflow control device 750 of FIG. 23 , the airflow control device 950 does not generate the auxiliary airflow X by sucking air around the discharge port 21 , but air inside the housing 10 . can be sucked in to create an auxiliary airflow (X).

That is, part of the air on the upstream side of the heat exchanger 30 is discharged to the outlet 972 through the guide flow path 970 to form the auxiliary airflow X, and the remaining part is discharged to the discharge port 21 to form the main airflow. can be formed

A Coanda curved portion 914 is formed around the discharge port 21 , and the airflow control device 950 may discharge the auxiliary airflow X in a tangential direction of the Coanda curved portion 914 .

The guide flow path 970 for guiding the auxiliary airflow X connects the inlet 971 for sucking in air and the outlet 972 for discharging the sucked air.

The airflow control device 950 may further include an airflow control fan 960 for blowing air to generate an auxiliary airflow X, and an airflow control motor 961 for driving the airflow control fan 960 .

26 is a perspective view of an air conditioner according to another embodiment of the present invention. FIG. 27 is a view of the air conditioner shown in FIG. 26 as viewed from the bottom; 28 is an exploded perspective view of the air conditioner shown in FIG. 26 . 29 is a side cross-sectional view taken along line I-I shown in FIG. 27;

26 to 29, the air conditioner 1 according to an embodiment of the present invention will be described.

The air conditioner 1001 may be installed on the ceiling (C). At least a portion of the air conditioner 1001 may be embedded in the ceiling (C).

The air conditioner 1001 includes a housing 1010 having an inlet 1020 and an outlet 1021 , a heat exchanger 1030 provided inside the housing 1010 , and a blowing fan 1040 for flowing air. may include

The housing 1010 may have an approximately circular shape when viewed in a vertical direction. The housing 1010 includes an upper housing 1011 disposed inside the ceiling C, an intermediate housing 1012 coupled under the upper housing 1011 , and a lower housing coupled below the intermediate housing 1012 . (1013).

A suction port 1020 through which air is sucked may be formed in a central portion of the lower housing 1013 , and a discharge port 1021 through which air is discharged may be formed at a radially outer side of the suction port 1020 . The discharge port 1021 may have a substantially circular shape when viewed in a vertical direction.

With this structure, the air conditioner 1001 sucks air from the lower side, cools and heats it, and then discharges the air to the lower side again.

The lower housing 1013 may have a first guide surface 1014a and a second guide surface 1014b that form the discharge port 1021 . The first guide surface 1014a may be provided adjacent to the suction port 1020 , and the second guide surface 1014b may be provided to be spaced apart from the suction port 1020 than the first guide surface 1014a. The first guide surface 1014a and/or the second guide surface 1014b may include a Coanda curved portion guiding air discharged through the discharge port 1021 . The Coanda curved portion may induce the airflow discharged through the outlet 1021 to flow in close contact with the Coanda curved portion.

A grill 1015 may be coupled to a bottom surface of the lower housing 1013 to filter dust from the air sucked into the suction port 1020 .

The heat exchanger 1030 is provided inside the housing and may be disposed on an air flow path between the inlet 1020 and the outlet 1021 . The heat exchanger 1030 may include a tube (not shown) through which a refrigerant flows, and a header (not shown) connected to an external refrigerant pipe to supply or recover the refrigerant to the tube. The tube may be provided with heat exchange fins to expand the heat dissipation area.

The heat exchanger 1030 may have an approximately circular shape when viewed in a vertical direction. The heat exchanger 1030 is placed on the drain tray 1016 so that condensed water generated in the heat exchanger 1030 may be collected in the drain tray 1016 .

The blowing fan 1040 may be provided radially inside the heat exchanger 1030 . The blowing fan 1040 may be a centrifugal fan that sucks air in an axial direction and discharges it in a radial direction. A blower motor 1041 for driving the blower fan 1040 may be provided in the air conditioner 1001 .

With this configuration, the air conditioner 1001 may suck in air from the room, cool it, and then discharge it to the room, or it may suck in air and heat it and then discharge it into the room.

The air conditioner 1001 may further include a drain pump 1082 connected to the heat exchanger 1030 and discharging the condensed water collected in the heat exchanger pipe 1081 through which the refrigerant flows and the drain tray 1016 to the outside. . The heat exchanger pipe 1081 and the drain pump 1082 may be provided above the bridge 1100 to be described later so as not to cover the suction port. Specifically, the heat exchanger pipe 1081 may be seated on the heat exchanger pipe seat 1016a provided in the drain tray 1016 , and the drain pump 1082 may be seated on the drain pump seat 1016b provided in the drain tray 1016 . ) can be seated (see FIG. 33).

Referring to FIG. 27 , the air conditioner 1001 may further include a bridge 1100 provided adjacent to the outlet 1021 and extending by a preset length in the circumferential direction of the outlet 1021 . The bridge 1100 is spaced apart from each other by a preset interval along the circumferential direction, and three bridges may be provided. The bridge 1100 may be provided to connect the first guide surface 1014a and the second guide surface 1014b.

When the discharge port 1021 is provided in a circular shape and air is discharged from all directions, a relatively high pressure is formed around the discharge port 1021 and a relatively low pressure is formed around the suction port 1020 . In addition, since air is discharged from all directions of the discharge port 1021 and an air curtain is formed, air to be suctioned through the suction port 1020 cannot be supplied to the suction port 1020 side. In this situation, the air discharged from the discharge port 1021 is again sucked through the suction port 1020 , and the re-inhaled air causes dew formation inside the housing 1010 , and the discharged air is lost and the sensible performance is lowered. became

The bridge 1100 according to an embodiment of the present invention is provided on the outlet 1021 to block the outlet 1021 by a preset length. Accordingly, the discharge port 1021 is divided into a first section S1 through which air is discharged and a second section S2 through which air is hardly discharged because it is blocked by the bridge 1100 . That is, the bridge 1100 may form a second section S2 for supplying air to be sucked through the suction port 1020 . In addition, the bridge 1100 may reduce the pressure difference between the low pressure around the suction port 1020 and the high pressure around the discharge port 1021 so that air can be smoothly supplied to the suction port 1020 .

The bridge 1100 may include a pair of discharge guide surfaces 1101 that become closer in a direction in which air is discharged to minimize the second section S2 formed by the bridge 1100 . The air discharged from the discharge port 1021 by the discharge guide surface 1101 may spread more widely from the discharge port 1021 and may be discharged.

Although the air conditioner 1001 shown in FIG. 27 shows that the three bridges 1100 are provided at the same distance from each other, that is, at an angle of 120°, the present invention is not limited thereto, and as shown in FIG. Only one bridge 1100a may be provided. In addition, as shown in FIG. 31, two bridges 1100b may be provided at an angle of 180°, and as shown in FIG. 32, four bridges 1100c may be provided at an angle of 90°. . The plurality of bridges 1100 , 1100b , and 1100c may be disposed at different angles along the circumferential direction of the discharge port 1021 . In addition, although not shown, five or more bridges may be provided. That is, the number of bridges is not limited.

However, in order to form the second section S2 and smoothly supply air to be sucked through the suction port 1020, the total length of the bridges 1100, 1100a, 1100b, 1100c is 5% or more of the total circumference length of the discharge port 40% or less may be provided. That is, the ratio of the length of the second section S2 to the sum of the length of the first section S1 and the length of the second section S2 may be 5% or more and 40% or less.

In addition, when a plurality of bridges 1100, 1100b, and 1100c are provided, the display units 1120, 1120b, and 1120c are located below one of the plurality of bridges 1100, 1100b, and 1100c. This can be provided.

The air discharged from the discharge port 1021 by the bridges 1100, 1100a, 1100b, and 1100c may spread and be discharged to cool or heat the room without being re-suctioned into the suction port 1020 .

Referring to FIG. 33 , the air conditioner is provided on the discharge port 1021a and may further include a discharge guide rib 1110 extending in the vertical direction along the air discharge direction. Specifically, the discharge guide rib 1110 may be provided on the drain tray 1016 . The drain tray 1016 includes a drain tray discharge port 1021a corresponding to the discharge port 1021 of the housing 1010 , and the discharge guide rib 1110 is provided at the drain tray discharge port 1021a, and the drain tray discharge port 1021a It is possible to increase the flow rate of the air discharged through the drain tray outlet 1021a by reducing the area of the . The discharge guide rib 1110 may guide the air discharged from the drain tray discharge port 1021a so that the air is widely spread and discharged. The discharge guide rib 1110 may be provided to correspond to the first section S1 of the discharge port 1021 in which the bridge 1100 is not formed.

In addition, the discharge guide rib 1110 may be provided on the drain tray discharge port 1021a to reinforce the strength of the housing 1010 .

The discharge guide rib 1110 includes a first discharge guide rib 1111 extending in a circumferential direction of the drain tray discharge hole 1021a and a second discharge guide rib 1112 extending in a radial direction of the drain tray discharge hole 1021a. may include

The first discharge guide rib 1111 is formed along the circumferential direction of the drain tray discharge port 1021a, and the second discharge guide rib 1112 is formed along the radial direction of the drain tray discharge port 1021a, and the drain tray discharge port 1021a ), it is possible to increase the flow rate of air passing through the drain tray outlet 1021a. A plurality of second discharge guide ribs 1112 may be provided.

34 and 35 are views showing a portion of the discharge guide rib 1110 shown in FIG. 33 in which it is unfolded.

Referring to FIG. 34 , the second discharge guide rib 1112a may be disposed to be inclined downward toward the bridge 1100 as it is disposed closer to the bridge 1100 when viewed from the radial direction of the drain tray discharge hole 1021a. That is, the second discharge guide rib 1112a may be coupled to the first discharge guide rib 1111a so that the air discharged from the central portion toward both sides is inclined in a spreading direction. Accordingly, the second discharge guide rib 1112a may minimize the second section S2 by discharging the air discharged from the drain tray discharge port 1021a while spreading it toward the bridge 1100 . That is, the air may be discharged in all directions of the air conditioner 1001 as much as possible.

Referring to FIG. 35 , when viewed from the radial direction of the drain tray outlet 1021a, the second discharge guide rib 1112b is disposed closer to the bridge 1100 to be inclined downward in a direction away from the bridge 1100. can be That is, the second discharge guide rib 1112b may be coupled to the first discharge guide rib 1111b to be inclined in a direction in which the discharged air is concentrated from the central portion toward both sides. Accordingly, the second discharge guide rib 1112b may collect the air discharged from the drain tray discharge port 1021a to form a strong airflow.

Referring to FIG. 36 , the housing 1010 may omit the first discharge guide rib 1111 and include only the second discharge guide rib 1112c.

In addition, although not shown, the first discharge guide rib 1111 is inclined away from the suction port 1020 along the radial direction of the drain tray discharge port 1021a so that the air discharged from the drain tray discharge port 1021a is removed from the drain tray. It may be discharged from the suction port 1020 along the radial direction of the discharge port 1021a.

38, the intermediate housing 1012 includes an intermediate housing outlet 1021b corresponding to the outlet 1021 of the lower housing 1013 and the drain tray outlet 1021a of the drain tray 1016, A housing discharge guide rib 1113 corresponding to the second discharge guide rib 1112 of the drain tray 1016 may be provided in the intermediate housing discharge port 1012b. The housing discharge guide rib 1113 may be provided on the same plane as the second discharge guide rib 1112 and may be coupled to the second discharge guide rib 1112 .

FIG. 37 is an enlarged view of a portion 'O' shown in FIG. 29 . 38 is an exploded perspective view showing the middle housing and the lower housing shown in FIG. 28 . FIG. 39 is a view showing the flow of air by the airflow control device of the air conditioner shown in FIG. 26 .

37 to 39 , the air conditioner 1001 may further include an airflow control device 1050 for controlling the discharge airflow.

The airflow control device 1050 may control the direction of the discharge airflow by changing the pressure by sucking air around the discharge port 1021 . In addition, the airflow control device 1050 may control an intake amount of air around the discharge port 1021 . That is, the airflow control device 1050 may control the direction of the discharge airflow by controlling the intake amount of air around the discharge port 1021 .

Here, controlling the direction of the discharge air flow means controlling the angle of the discharge air flow.

When the air flow control device 1050 sucks air around the discharge port 1021 , the air flow control device 1050 may suck air from one side of the flow direction of the discharge air flow.

That is, as shown in FIG. 37 , if the traveling direction of the discharge air flow when the air flow control device 1050 is not operated is in the A1 direction, the air flow control device 1050 operates to suck air from one side of the A1 direction. By doing so, the advancing direction of the discharge air flow can be switched to the A2 direction.

At this time, the switching angle may be adjusted according to the suction amount. In other words, if the suction amount is small, it is converted to a small angle, and if the suction amount is increased, the traveling direction may be switched to a large angle.

The airflow control device 1050 may suck in air from the radially outer side of the discharge port 1021 . As described above, since the airflow control device 1050 sucks air from the radially outer side of the discharge port 1021 , the discharge airflow may spread widely from the radial center of the discharge port 1021 to the outside in the radial direction.

The airflow control device 1050 includes an airflow control fan 1060 that generates a suction force for sucking air around the outlet 1021 , an airflow control motor 1061 for driving the airflow control fan 1060 , and the airflow control fan It may include a guide flow path 1070 for guiding the air sucked by the 1060.

The airflow control fan 1060 may be accommodated in a fan case 1062 provided at one end adjacent to the suction port 1020 of the bridge 1100 . In this embodiment, three airflow control fans 1060 are provided to correspond to the number of bridges 1100, but are not limited thereto, and the number and arrangement of airflow control fans 1060 depends on the number of bridges 1100 and It can be designed in various ways such as arrangement.

In addition, although a centrifugal fan is used as the airflow control fan 1060 in the embodiment shown in FIG. 37 , the present invention is not limited thereto, and various fans such as an axial fan, a cross-flow fan, and a mixed-flow fan may be used according to design specifications.

The guide passage 1070 connects the inlet 1071 for sucking air around the outlet 1021 and the outlet 1072 for discharging the sucked air. A part of the guide passage 1070 may be formed in the bridge 1100 .

The inlet 1071 may be formed in the second guide surface 1014b of the lower housing 1013 . The outlet 1072 may be formed adjacent to the outlet 1021 on the opposite side of the inlet 1071 . Specifically, the outlet 1072 may be formed in the fan case 1062 provided under the bridge 1100 .

With this configuration, as described above, the airflow control device 1050 can discharge the sucked air to the side opposite to the traveling direction A1 of the discharge airflow, increase the angle of the discharge airflow, and control the airflow. can do it more smoothly.

37 and 38 , the guide flow path 1070 has a first flow path 1070a formed in a circumferential direction on the outside of the housing 1010 and communicating with the inlet 1071, and a radius from the first flow path 1070a. It may include a second flow path 1070b extending inward in the direction and a third flow path 1070c formed inside the fan case 1062 . Here, the second flow path 1070b may be formed in the bridge 1100 .

Accordingly, the air sucked in through the inlet 1071 may be discharged through the outlet 1072 through the first passage 1070a, the second passage 1070b, and the third passage 1070c.

However, the structure of the guide passage 1070 is only one example, and the guide passage 1070 is sufficient only to connect the inlet 1071 and the outlet 1072, and the structure, shape and arrangement thereof are not limited.

In addition, referring to FIGS. 37 and 39 , the outlet 1072 may be provided to discharge air toward the lower surface 1103 of the bridge 1100 . That is, the outlet 1072 may be provided under the bridge 1100 .

When the air introduced through the inlet 1071 is cooled air, when the cooled air passes through the bridge 1100, the outside surface by the temperature difference between the inside and the outside of the bridge 1100 through which the cooled air passes, That is, dew condensation may occur on the lower surface 1103 of the bridge 1100 .

However, in the case of the air conditioner 1001 according to an embodiment of the present invention, the cooled air introduced through the inlet 1071 is the bridge 1100 through the outlet 1072 provided at the lower side of the bridge 1100. Since air is discharged to the lower surface 1103 , the temperature difference between the inside and the outside of the bridge 1100 can be reduced. Accordingly, dew formation can be prevented.

Referring to FIGS. 27 and 40 , the air conditioner 1001 may further include a display unit 1120 below one of the plurality of bridges 1100 .

The display unit 1120 may display the operating state of the air conditioner 1001 to the user. Specifically, the display unit 1120 displays whether the air conditioner 1001 is operating, displays the direction of the discharge air flow, or displays whether the air conditioner 1001 is currently being driven in the cooling mode or the heating mode. and various information related to the air conditioner 1001 may be displayed without being limited thereto.

The display unit 1120 may include a discharge guide surface 1122 having substantially the same shape as the discharge guide surface 1101 of the bridge 1100 described above. Accordingly, the air discharged from the discharge port 1021 adjacent to the portion in which the display unit 1120 is provided may also spread and be discharged from the discharge port 1021 .

Although not shown, on the lower side of the bridge 1100, in addition to the display unit 1120, a remote control receiver (not shown), an input unit (not shown) of the air conditioner 1001, and a communication unit (not shown) enabling communication with an external device It is also possible that at least one of them is provided.

When the display unit 1120 is provided under the bridge 1100 , the outlet 1072 cannot discharge air toward the lower surface 1103 of the bridge 1100 . Accordingly, a thermal insulation material 1121 may be provided between the display unit 1120 and the bridge 1100 to prevent a problem of dew formation occurring on the display unit 1120 side.

39 and 41 , the outlet 1072 may further include an outlet rib 1073 extending in a direction in which air is discharged from the outlet 1072 . That is, the outlet rib 1073 may be formed to extend in the radial direction of the outlet 1021 . The outlet rib 1073 may extend in a horizontal direction and a vertical direction of the outlet 1072 . Although one outlet rib 1073 extending in a vertical direction and four outlet ribs 1073 extending in a horizontal direction are provided in FIG. 41 , the number of outlet ribs 1073 is not limited thereto.

The outlet rib 1073 has the outlet 1072 so that the air discharged from the outlet 1072 can be discharged in approximately the same direction as the air flow discharged from the outlet 1021 after contacting the lower surface 1103 of the bridge 1100 . ) guides the air discharged from

In addition, the outlet rib 1073 is discharged from the outlet 1021 when the airflow control device 1050 is not driven, that is, when a part of the air discharged from the outlet 1021 does not flow in through the inlet 1071 . It is possible to prevent a portion of the air from being introduced into the outlet 1072 .

42 is a view of another embodiment of the outlet shown in FIG. 41 as viewed from the radial direction of the outlet. FIG. 43 is a view of another embodiment of the outlet shown in FIG. 41 as viewed from the radial direction of the outlet. 44 is a perspective view showing another embodiment of the outlet shown in FIG. 45 is a perspective view showing another embodiment of the outlet shown in FIG.

Referring to FIG. 42 , the outlet rib 1073a of the outlet 1072 may extend only in the vertical direction.

Referring to FIG. 43 , the outlet rib 1073b of the outlet 1072 may extend only in the horizontal direction.

Referring to FIG. 44 , the outlet rib 1073c of the outlet 1072 extending in the vertical direction spreads the air discharged from the outlet 1072 to both sides of the outlet 1072 and is discharged with respect to the direction of the air. It may be disposed to be inclined by a preset angle.

Referring to FIG. 45 , the outlet rib 1073d of the outlet 1072 extending in the horizontal direction allows the air discharged from the outlet 1072 to have an inclination approximately equal to the inclination of the lower surface 1103 of the bridge 1100. In 1072, it may be provided to be inclined downward toward the direction in which the air is discharged. Accordingly, the air discharged from the outlet 1072 can be naturally discharged along the lower surface 1103 of the bridge 1100, thereby reducing the loss due to collision with the lower surface 1103 of the bridge 1100. .

46 is a view from the bottom of the air conditioner with the grill shown in FIG. 26 removed. FIG. 47 is a view obliquely looking from the lower side of part 'A' shown in FIG. 46 . FIG. 48 is a view obliquely looking from the lower side of part 'B' shown in FIG. 46 . 49 is a view showing another embodiment of the lower housing shown in FIG. 48 . FIG. 50 is a view showing another embodiment of the lower housing shown in FIG. 48 .

46 and 47 , the airflow control fan 1060 of the air conditioner 1001 is provided under the bridge 1100 and sucks air sucked from the inlet 1071 radially outward of the outlet 1021 . It can be discharged through the outlet 1072 to the. The outlet 1072 may be provided on the opposite side of the outlet 1021 in which the inlet 1071 is formed.

46 and 48 , when the display unit 1120 is provided under the bridge 1100 , the airflow control fan 1060a is the inlet 1020 of the bridge 1100 disposed above the display unit 1120 . ) is provided at one end adjacent to the display unit 1120 , and is provided radially inside the discharge port 1021 for the display unit 1120 .

In addition, the outlet 1072a through which air is discharged from the airflow control fan 1060a may be provided on the first guide surface 1014a on the left side of the display unit 1120 . Specifically, the fan case 1062a in which the airflow control fan 1060a is accommodated is different from the fan case 1062 disposed adjacent to the bridge 1100 in which the display unit 1120 is not provided. An opening 1063a through which air is discharged is provided in the left direction of the display unit 1120, and an extension connecting the opening 1063a of the airflow control fan 1060a and the outlet 1072a provided on the first guide surface 1014a A duct 1064a may be disposed. Accordingly, the air sucked in through the inlet 1071 may be discharged through the outlet 1072a formed on the left side of the display unit 1120 without interference with the display unit 1120 .

On the other hand, as shown in FIG. 49 , the outlet 1072b may be provided on the right side of the display unit 1120 . In this case, the fan case 1062b in which the airflow control fan 1060b is accommodated provides an opening 1063b through which air is discharged from the airflow control fan 1060b in the right direction of the display unit 1120, and the airflow control fan ( An extension duct 1064b connecting the opening 1063b of 1060b and the outlet 1072b provided on the first guide surface 1014a may be disposed. Accordingly, the air sucked in through the inlet 1071 may be discharged through the outlet 1072b formed on the right side of the display unit 1120 without interference with the display unit 1120 .

On the other hand, as shown in FIG. 50 , an outlet (not shown) may be provided at the rear of the display unit 1120 . In this case, the air introduced from the inlet 1071 may be discharged into the housing 1010 .

Specifically, the fan case 1062c in which the airflow control fan 1060c is accommodated has an opening 1063c through which air is discharged from the airflow control fan 1060c at the rear of the display unit 1120 , that is, inside the housing 1010 . direction, and a fourth flow path (not shown) connecting the opening 1063c of the airflow control fan 1060c and the outlet formed in the housing 1010 may be provided. Accordingly, the air introduced through the inlet 1071 may sequentially pass through the airflow control fan 1060c, the opening 1063c of the airflow control fan 1060c, and the fourth flow path, and then flow out through the outlet.

51 is a cross-sectional view taken along the line II-II shown in FIG. 29 . FIG. 52 is a view of the intermediate housing shown in FIG. 28 as viewed from the bottom; 53 is a view showing another embodiment of the intermediate housing shown in FIG. 51 . Fig. 54 is a view showing another embodiment of the intermediate housing shown in Fig. 51; FIG. 55 is a view showing another embodiment of the intermediate housing shown in FIG. 51 . FIG. 56 is a view showing another embodiment of the lower housing shown in FIG. 51 .

51 and 52 , the intermediate housing 1012 may further include a partition 1012a for partitioning the guide passage 1070 .

Specifically, the intermediate housing 1012 may include a partition 1012a dividing the first flow path 1070a communicating with the inlet 1071 . The partitions 1012a may be provided to correspond to the number of bridges 1100 . The partition 1012a may be provided at a midpoint between the plurality of bridges 1100 on the first flow path 1070a to divide the first flow path 1070a symmetrically with respect to each of the bridges 1100 . The partition 1012a may partition the guide flow path 1070 formed between the plurality of airflow control fans 1060 .

That is, as shown in FIG. 51 , when three bridges 1100', 1100'', and 1100''' are provided, the partition 1012a is formed on each bridge 1100', 1100 on the first flow path 1070a. '', 1100''') may be provided at an intermediate point. Accordingly, the first flow path 1070a is divided into a first part P1, a second part P2, and a third part P3, so that the bridges 1100', 1100'', 1100''' The air introduced through the inlet 1071 flows according to whether the airflow control fan 1060 disposed at one end is driven.

Specifically, when the airflow control fan 1060 disposed at one end of the first bridge 1100 ′ is driven, only the air of the portion corresponding to the first portion P1 among the air discharged through the discharge port 1021 is It flows into the first flow path 1070a through the inlet 1071 . When the airflow control fan 1060 disposed at one end of the second bridge 1100 ″ is driven, only the air in the portion corresponding to the second portion P2 among the air discharged through the outlet 1021 is the inlet. It flows into the first flow path 1070a through 1071 . When the airflow control fan 1060 disposed at one end of the third bridge 1100 ″″ is driven, only the air in the portion corresponding to the third portion P3 among the air discharged through the outlet 1021 is It flows into the first flow path 1070a through the inlet 1071 . Here, the airflow control fans 1060 disposed adjacent to each of the bridges 1100', 1100'' and 1100''' can be driven independently of each other. Accordingly, in the case of the air conditioner shown in FIG. 26 , independent discharge airflows may be formed in three directions around the bridge 1100 .

As such, in the case of the embodiment illustrated in FIG. 51 , different airflows may be formed by sections divided in advance based on the bridges 1100', 1100'', and 1100'''.

The intermediate housing 1012 may include a guide portion 1017 formed at the other end opposite to one end at which the air flow control fan 1060 of the bridge 1100 is provided. The guide part 1017 may be provided at the other end of the bridge 1100 through which air sucked in from the vicinity of the discharge port 1021 is introduced. The guide part 1017 may be provided at a point where the first flow path 1070a and the second flow path 1070b meet. The guide portion 1017 is configured such that the air flowing in from the first flow passages 1070a provided on the left and right sides of the bridge 1100 joins in the bridge 1100 and collides so that no loss occurs, the first flow passage 1070a ) to guide the air moving from the bridge (1100). That is, the guide part 1017 may guide the air introduced through the inlet 1071 so that the air flows naturally from the first flow path 1070a to the second flow path 1070b. The guide portion 1017 protrudes from the lower outer circumferential surface of the intermediate housing 1012 to form a curved surface of a left-right symmetrical shape.

Referring to FIG. 53 , the partition 1012b may be provided to be spaced apart from the midpoint by a preset distance on the first flow path 1070a between the bridges 1100 . That is, the partition 1012b may be disposed more adjacent to any one of the bridges 1100 .

Referring to FIG. 54 , the partition 1012c may be provided at a point where the bridge 1100 and the first flow path 1070a meet. Specifically, the partition 1012c may be provided at the other end of the right side of the bridge 1100 . In this case, the guide part 1017c protrudes to form a curved surface at the other right end of the bridge 1100 to guide the air flowing in from the first flow path 1070a formed on the left side of the bridge 1100 to the bridge 1100 . do.

54 , different airflows may be formed based on the outlets 1021 between the plurality of bridges 1100 .

Referring to FIG. 55 , the partition 1012d may be provided at the other left end of the bridge 1100 . In this case, the guide part 1017d protrudes to form a curved surface at the other left end of the bridge 1100 to guide the air flowing in from the first flow path 1070a formed on the right side of the bridge 1100 to the bridge 1100 . do.

55 , different airflows may be formed based on the outlets 1021 between the plurality of bridges 1100 .

Referring to FIG. 56 , the partition 1012e and the guide part 1017e may be provided in the lower housing 1013 . In this case, the position of the partition 1012e and the shape of the guide part 1017e may be provided as shown in FIGS. 51 to 55 described above.

FIG. 57 is a view showing another embodiment of the air conditioner 1001 shown in FIG. 26 . In describing the embodiment shown in FIG. 57 , the same reference numerals are assigned to the same components as those of the air conditioner 1001 shown in FIG. 26 , and descriptions thereof may be omitted.

In the air conditioner 1002 illustrated in FIG. 57 , the airflow control device 1050 for controlling the airflow of the discharged air by sucking the air discharged from the discharge port 1021 may be omitted. Accordingly, in the air conditioner 1002 shown in FIG. 57 , the inlet 1071 and the outlet 1072 may be omitted.

58 is a view showing another embodiment of the air conditioner shown in FIG. 26 . In describing the embodiment shown in FIG. 58 , the same reference numerals are assigned to the same components as those of the air conditioner 1001 shown in FIG. 26 , and descriptions thereof may be omitted.

The air conditioner 1003 shown in FIG. 58 may further include an auxiliary suction port 1083 for sucking outdoor air in addition to the suction port 1020 . This auxiliary suction port 1083 may be provided on the outer peripheral surface of the upper housing (1011). The auxiliary suction port 1083 may be embedded in the interior of the ceiling (C). The auxiliary suction port 1083 may be provided on the outside of the ceiling (C). The outdoor air introduced through the auxiliary suction port 1083 may be discharged through the discharge port 1021 after passing through the heat exchanger 1030 inside the housing 1010 .

As described above, the air conditioner 1001 according to the present invention can prevent the air discharged from the discharge port 1021 from being re-sucked into the suction port 1020, so that dew condensation occurs inside the housing 1010. can be prevented, and the loss of the discharge air flow can be reduced, thereby improving the user's sensible performance.

59 is a perspective view illustrating an indoor unit of an air conditioner according to another embodiment of the present invention. FIG. 60 is a side cross-sectional view taken along line I-I shown in FIG. 59; 61 is an exploded perspective view of an air conditioner according to another embodiment of the present invention. 62 is an exploded perspective view of a lower housing of the air conditioner according to another embodiment of the present invention. 63 is a rear view illustrating a state in which the second lower housing of the air conditioner according to another embodiment of the present invention is removed. FIG. 64 is an enlarged view of a portion of FIG. 60 .

A schematic configuration of an air conditioner according to an embodiment of the present invention will be described with reference to FIGS. 59 to 64 .

The indoor unit 2001 of the air conditioner may be installed on the ceiling (C). At least a portion of the indoor unit 2001 of the air conditioner may be embedded in the ceiling (C).

The indoor unit 2001 of the air conditioner includes a housing 2010 having an intake port 2011 and an outlet port 2033 , a heat exchanger 2080 provided inside the housing 2010 , and a blowing fan 2040 for flowing air. ) is included.

The housing 2010 may have an approximately circular shape when viewed in a vertical direction. The housing 2010 includes an upper housing 2020 disposed inside the ceiling C, an intermediate housing 2021 coupled below the upper housing 2020, and a lower housing coupled below the intermediate housing 2021. (2030).

The lower housing 2030 is disposed on the lower side along the periphery of the intermediate housing 2021 and includes a first lower outer housing 2031a having an annular shape, and a radially inner side of the first lower outer housing 2031a and disposed in an annular shape. A first lower inner housing 2031b provided in a shape, and a second lower housing 2032 coupled to the lower side of the first lower inner housing 2031b to cover the lower side of the first lower inner housing 2031b. can be (see FIG. 62). However, unlike the embodiment of the present invention, the first lower inner housing 2031b and the second lower housing 2032 may be integrally formed.

In the central portion of the lower housing 2030 , a suction port 2011 having an opening shape through which external air is sucked through communication from the outside to the blowing fan 2040 may be provided. That is, the center of the second lower housing 2032 is opened, and the space from the opening of the second lower housing 2032 to the blower fan 2040 is communicated, so that external air can be introduced into the housing 2010. .

A suction panel 2015 including a suction grill 2016 provided in the shape of a plurality of holes to cover the suction port 2011 and to suck air into the suction port 2011 is provided on the lower side of the suction port 2011, and the suction panel A discharge port 2033 through which air is discharged may be formed at a radially outer side of (2015). The discharge port 2033 may have a substantially circular shape when viewed in a vertical direction.

The discharge port 2033 may be formed in a space formed between the first lower outer housing 2031a and the first lower inner housing 2031b, that is, in the radial direction of the first lower outer and inner housings 2031a and 2031b. can That is, the discharge port 2033 may be defined as a space formed between the inner peripheral surface of the first lower outer housing 2031a and the outer peripheral surface of the first lower inner housing 2031b from the opening of the intermediate housing 2021 .

However, the discharge port 2033 is an opening formed in the lower housing 2030 and is a space communicating with the outside so that the air heat-exchanged in the heat exchanger 2080 is discharged to the outside of the lower housing 2030 , and is not limited to the above definition.

With this structure, the indoor unit 2001 of the air conditioner may suck in air from the lower side, cool and heat it, and then discharge it to the lower side again.

A Coanda curved portion for guiding the air discharged through the discharge port 2033 may be formed on the inner circumferential surface of the first lower outer housing 2031a. The Coanda curved portion 2034 may induce the airflow discharged through the outlet 2033 to flow in close contact with the Coanda curved portion 2034 .

A filter 2017 may be coupled to the upper surface of the suction panel 2015 to filter dust from the air sucked into the suction grill 2016 .

A suction guide 2100 for guiding air passing through the suction panel 2015 to flow to the blower fan 2040 may be provided at the center of the second lower housing 2032 . As described above, an opening is formed in the center of the second lower housing 2032 , and the suction guide 2100 is provided with the second lower housing 2032 to guide air flowing into the opening and flowing to the blowing fan 2040 . ) can be placed in the opening of the

The heat exchanger 2080 may have an approximately circular shape when viewed in a vertical direction.

The heat exchanger 2030 is placed on the drain tray 2090 so that condensed water generated in the heat exchanger 2080 may be collected in the drain tray 2090 .

The blowing fan 2040 may be provided radially inside the heat exchanger 2080 . The blowing fan 2040 may be a centrifugal fan that sucks air in an axial direction and discharges it in a radial direction. A blowing motor 2041 for driving the blowing fan 2040 may be provided in the indoor unit 2001 of the air conditioner. It may also include a blower fan inlet 2042 through which air sucked in from the suction port 2011 is introduced into the blower fan 2040 .

With this configuration, the indoor unit 2001 of the air conditioner may suck in air from the room, cool it, and then discharge it to the room, or it may suck in air and heat it and then discharge it into the room.

The indoor unit 2001 of the air conditioner further includes an airflow control device 2050 for controlling the discharge airflow.

The airflow control device 2050 may control the direction of the discharge airflow by changing the pressure by sucking air around the discharge port 2033 . In addition, the airflow control device 2050 may control an intake amount of air around the discharge port 2033 . That is, the airflow control device 2050 may control the direction of the discharge airflow by controlling the intake amount of air around the discharge port 2033 .

Here, controlling the direction of the discharge airflow means controlling the angle of the discharge airflow.

When the air flow control device 2050 sucks air around the discharge port 2033 , the air flow control device 2050 may suck air from one side of the flow direction of the discharge air flow.

That is, as shown in FIG. 64 , if the traveling direction of the discharge airflow when the airflow control device 2050 is not operated is in the A1 direction, the airflow control device 2050 operates to suck air from one side of the A1 direction. By doing so, the advancing direction of the discharge airflow can be switched to the A2 direction.

At this time, the switching angle may be adjusted according to the suction amount. In other words, if the suction amount is small, it is converted to a small angle, and if the suction amount is increased, the traveling direction may be switched to a large angle.

The airflow control device 2050 may discharge the sucked air in a side opposite to the traveling direction A1 of the discharge airflow. Accordingly, the angle of the discharge airflow can be made larger, and the airflow control can be performed more smoothly.

The airflow control device 2050 may suck in air from the radially outer side of the discharge port 2033 . As described above, since the airflow control device 2050 sucks air from the radially outer side of the discharge port 2033 , the discharge airflow may spread widely from the radial center of the discharge port 2033 to the outside in the radial direction.

The airflow control device 2050 includes an airflow control fan 2060 that generates a suction force for sucking air around the outlet 2033 , an airflow control motor 2061 for driving the airflow control fan 2060 , and the airflow control fan 60 and an airflow control fan case 2062 covering the airflow control motor 61 , and a guide flow path 2070 for guiding air sucked by the airflow control fan 2060 .

The airflow control fan 2060 may be accommodated inside the lower housing 2030 . In detail, the airflow control fan case 2062 may be provided in a space formed in the first lower outer case 2031a. However, the present invention is not limited thereto, and the airflow control fan 60 may be disposed inside the lower housing 2030 , which not only the first lower outer housing 2031a but also the first lower inner housing 2031b or the second lower housing. It may be arranged in a space provided by 2032 .

In the present embodiment, three airflow control fans 2060 are provided at an angle of 120 degrees, but the present invention is not limited thereto, and the number and arrangement of the airflow control fans 2060 may be variously designed.

In addition, although a centrifugal fan is used as the airflow control fan 2060 in the present embodiment, the present invention is not limited thereto, and various fans such as an axial fan, a cross-flow fan, and a mixed-flow fan may be used according to design specifications.

The guide flow path 2070 connects the inlet 2071 for sucking air around the outlet 2033 and the outlet 2072 for discharging the sucked air.

The inlet 2071 may be formed in the Coanda curved portion 2034 of the first lower housing 2031 .

The outlet 2072 may be located around the outlet 2033 on the opposite side of the inlet 2071 . Specifically, the outlet 2072 may be provided in the second lower housing 2032 .

With this configuration, as described above, the airflow control device 2050 can discharge the sucked air to the side opposite to the traveling direction A1 of the discharge airflow, and can make the angle of the discharge airflow larger, and control the airflow. can do it more smoothly.

The guide flow path 2070 includes a first flow path 2070a formed in the circumferential direction of the housing 2010 and communicating with the inlet 2071, and a second flow path 2070b extending radially inward from the first flow path 2070a. and a third flow path 2070c formed in an area where the airflow control fan 2060 is seated.

Accordingly, the air sucked in through the inlet 2071 may be discharged through the outlet 2072 through the first passage 2070a, the second passage 2070b, and the third passage 2070c.

The guide passage 2070 may be formed by the intermediate housing 2021 , the first lower housings 2031a and 2031b , and the second lower housing 2032 . In detail, the first flow passage 2070a and the second flow passage 2070b are formed in the inner space formed by the intermediate housing 2021 and the first lower housings 2031a and 2031b, and the third flow passage 2070c is the second It may be formed by an inner space formed by the lower housing 2032 and the airflow control fan case 2062 .

However, the structure of the guide passage 2070 is only one example, and the guide passage 2070 is sufficient only to connect the inlet 2071 and the outlet 2072, and there is no limitation in the structure, shape, and arrangement thereof.

A bridge 2074 that partitions the discharge port 2033 and forms a second flow path 2070b may be provided in the first lower outer housing 2031a. In this embodiment, three bridges 2075 are provided.

With this configuration, the indoor unit of the air conditioner according to the embodiment of the present invention can control the discharge air flow without the blade structure, compared to the conventional structure in which a blade is provided at the discharge port and the discharge air flow is controlled by the rotation of the blade. Accordingly, since there is no obstruction by the blade, the discharge amount can be increased and the flow noise can be reduced.

In addition, the discharge port of the indoor unit of the conventional air conditioner had to have a straight shape in order to rotate the blade, but the discharge port of the indoor unit of the air conditioner according to the embodiment of the present invention may be provided in a circular shape. Since the housing and heat exchanger can also be provided in a circular shape, not only can the aesthetics be improved with a differentiated design, but also, considering that the blower fan has a circular shape in general, the flow of air flow occurs naturally and pressure loss is reduced As a result, the cooling or heating performance of the air conditioner may be improved. Hereinafter, the suction guide 2100 for guiding air sucked into the indoor unit 2001 of the air conditioner will be described in detail.

65 is a rear perspective view in a state in which the suction panel of the air conditioner according to another embodiment of the present invention is removed. 66 is a partial cross-sectional view of a suction guide of an air conditioner according to another embodiment of the present invention. 67 is an exploded perspective view of a partial configuration of an air conditioner according to another embodiment of the present invention.

As shown in FIG. 65 , a suction guide 2100 for guiding external air flowing into the housing 2010 may be provided between the suction port 2011 and the blower fan inlet 2042 .

The suction guide 2100 extends from the suction port 2011 to the blowing fan inlet 2042 so that external air passes through the suction port 2011 and is introduced into the blowing fan 2040. The suction port 2011 and the blowing fan 2040 ) may be provided in a tubular shape between.

The suction guide 2100 may include a guide surface 2110 extending from the suction port 2011 to the blowing fan guide 2042 of the blower 2040 and having a curved shape.

The guide surface 2110 is a part of the inner circumferential surface of the suction guide 2100 and surrounds the outer circumferential surface of the suction port 2011 and may be provided as an annular surface extending to the blower fan inlet 2042 . In addition, the guide surface 2110 may extend from the suction port 2011 to the blower fan inlet 2042 through the opening 2091 provided at the center of the drain tray 2090 .

The air sucked in through the suction port 2011 may be guided to the blower fan 2040 by the guide surface 2110 , may be introduced into the blower fan 2040 , and may exchange heat with the heat exchanger 2080 . That is, the space formed by the guide surface 2110 may be the suction flow path 2120 through which air flows.

The suction guide 2100 may include a round part 2111 formed as a curved surface rounded between the suction port 2011 and the blower fan inlet 2042 . In detail, as shown in FIG. 65 , the round part 2111 may be provided to be rounded toward the inside of the housing 2010 between the suction port 2011 and the drain tray 2090 .

The above-described guide surface 2110 may include a round portion 2111 and extend to a side adjacent to the blower fan inlet 2042 . In detail, the guide surface 2110 may be defined as an inner peripheral surface of the suction guide 2100 from the round part 2111 to the blower fan inlet 2042 side.

The suction flow path 2120 is formed in a streamlined shape by the round part 2111 so that air can flow smoothly from the suction port 2011 to the blower fan inlet 2042 .

The round part 2111 may be formed such that a cross-sectional area of the suction passage 2120 formed on the side adjacent to the suction port 2011 is larger than that of the suction passage 2120 formed on the drain tray 2090 side.

That is, the suction flow path 2120 extends so that the radius of the guide surface 2110 formed on the side adjacent to the blower fan inlet 2042 is smaller than the radius of the guide surface 2110 formed on the side adjacent to the suction part 2011 . The rounding part 2111 may include a curved surface convex in the inner direction of the housing 2010 with respect to the rotation axis of the blower fan 2040 .

The round part 2111 is not limited to one embodiment of the present invention and may be provided in a round shape extending from the suction port 2011 to the direction in which the blowing fan inlet 2042 is located, and based on the rotation axis of the blowing fan 2040 . As such, the housing 2100 may include a curved surface concave in the inner direction.

The round part 2111 may start to be curved from the side adjacent to the suction port 2011 , and the curve may end between the suction port 2011 and the drain tray 2090 .

That is, one side of the round part 2111 is disposed in an area located above the suction port 2011, and the other side of the round part 2111 is disposed between the suction port 2011 and the drain tray 2090, the round part 2111. The other side of the round part 2111 may be curved to be rotated by approximately 90 degrees with respect to one side of the round part 2111 .

However, it is not limited to one embodiment of the present invention, and the round part 2111 may start to curve at the inlet 2011, and the other side of the round part 2111 passes through the drain tray 2090 to the blower fan inlet 2042. It can be provided so that the curve can be continued from the intake port 2011 to the blower fan inlet 2042 .

According to the round portion 2111 , the guide surface 2110 is not provided with a surface disposed perpendicular to the rotation axis of the blower fan 2040 , so that the air may flow smoothly.

As the suction guide 2100 passes through the drain tray 2090 and extends from the suction port 2011 to the blower fan inlet 2042, the drain tray 2090 is covered by the suction guide 2100 so as not to be exposed to the outside. can be

That is, the outer circumferential surface of the suction guide 2100 is formed in a direction facing the inner circumferential surface of the housing 2010 and is not exposed to the outside, and the inner circumferential surface of the suction guide 2100 is provided in a shape that communicates from the outside to the blowing fan 2040. It may be provided to be exposed to the outside. Accordingly, the drain tray 2090 may be provided outside the outer circumferential surface of the suction guide 2100 so as not to be exposed to the outside.

In other words, the drain tray 2090 may not be disposed on the suction passage 2120 formed by the guide surface 2110 provided on the inner circumferential surface of the suction guide 2100 . That is, the guide surface 2110 may be provided to separate the suction passage 2120 and the drain tray 2090 .

In the case of the conventional air conditioner, a part of the drain tray is disposed on the suction passage to obstruct the flow of air. In particular, in the case of a part of the drain tray disposed to be perpendicular to the rotation axis of the blower fan, the amount of air introduced into the blower fan is reduced by blocking the flow of sucked air, and a large noise is generated by colliding with the drain tray.

However, according to an embodiment of the present invention, as the suction guide 2100 separates the drain tray 2090 from the suction passage 2120, it is possible to solve the problem that has occurred in the prior art.

In particular, a round part 2111 is disposed in the section where the drain tray 2090 is covered at the same time as the drain tray 2090 is separated, so that air can be smoothly introduced into the blower fan 2040 without interfering with the flow of air. there has been

In addition, as will be described later, internal components of the indoor unit 2001 of the air conditioner such as the control box 2200 may be disposed on the edge of the opening 2091 , which is covered by the suction guide 2100 and disposed on the suction flow path 2120 . It may be arranged not to.

Built-in components such as the drain tray 2090 and the control box 2200 are covered by the suction guide 2100 and disposed perpendicular to the rotation axis of the blower fan 2040 on the suction passage 2120 by the round part 2111 Since there is no surface to be used, it is possible to increase the fluidity of the air and minimize the noise caused by friction.

In particular, when the indoor unit 2001 of the air conditioner is driven with the suction guide 2100 removed according to an embodiment of the present invention, the indoor unit 2001 of the air conditioner with the suction guide 2100 assembled than when the indoor unit 2001 is driven. The noise generated in the suction passage 2120 when driving may be reduced by about 1.5 dB.

To describe the suction guide 2100 from the other side, the opening on the side of the blowing fan 2040, which is provided to suck air into the blowing fan 2040, the first suction port 2042a, the lower jig (2010). The opening provided in the housing 2010 to flow in is the third suction port 2011a, and the opening provided in the drain tray 2090 so that the air sucked in from the third suction port 2011a passes through the drain tray 2090 is the second suction port (2091a) can be defined.

At this time, the suction guide 2100 is provided to extend from the first suction port 2042a side to the third suction port 2011a side, and a second suction port ( 2091a) may be provided to pass through (see FIG. 61).

As the suction guide 2100 passes through the second suction port 2091a, the suction guide 2100 is formed by the suction guide 2100, the drain tray 2090 disposed outside the outer circumferential surface of the suction guide 2100, the suction formed by the inner circumferential surface. to be separated from the flow path 2120 .

In addition, by the round portion 2111, the third inlet (2011a) may be provided with a larger radius than the first inlet (2042a), and the second inlet (2091a) disposed therebetween has a radius greater than that of the third inlet (2011a). small.

Hereinafter, the suction guide 2100' according to another embodiment of the present invention will be described. Configurations other than the configuration of the suction guide 2100 ′ and the drain tray 2090 ′ described below are the same as those of the above-described embodiment, and thus descriptions thereof will be omitted.

68 is a cross-sectional view of a portion of the suction guide of the air conditioner according to another embodiment of the present invention.

The suction guide 2100 ′ extends from one side where the suction port 2011 is provided to the other side where the drain tray 2090 ′ is located, so that external air passes through the suction port 2011 to the suction guide 2100 ′ and the drain tray 2090 . ') and may be provided in a tubular shape between the suction port 2011 and the drain tray 2090' to be introduced into the blowing fan 2040.

The other side of the suction guide 2100' is connected to the opening 2091' of the drain tray 2090', and a tube shape leading to the guide surface 2110' and the opening 2091' may be provided inside the housing 2010. have.

That is, the suction passage 2120 ′ may be formed by a portion of the suction guide 2100 ′ and the drain tray 2090 ′, unlike the suction passage 2120 ′ according to an embodiment of the present invention. In detail, since the guide surface 2110' extends from the round part 2111 to one side of the inner peripheral surface of the opening 2091' of the drain tray 2090', the suction flow path 2120' follows the guide surface 2110'. It may be formed in a section extending to the other side of the inner peripheral surface of the opening 2091' of the drain tray 2090'.

The suction guide 2100 ′ may be provided so as to be in contact with one side of the inner circumferential surface of the opening 2091 ′ of the drain tray 2090 ′ without being spaced apart. Accordingly, air may be guided and flowed from the suction port 2011 to the blowing fan 2040 through the suction passage 2120 ′.

Since one side of the inner circumferential surface of the opening 2091' is in contact with the guide face 2110' without being spaced apart, the side of the guide face 2110' in contact with the opening 2091' and the inner circumferential side of the opening 2091' have the same radius. can have Accordingly, there is no configuration formed in the vertical direction with respect to the rotation axis of the blowing fan 2040 on the suction flow path 2120 ′, so that the flow is not limited and the air may be introduced into the blowing fan 2040 .

In addition, the other side of the inner peripheral surface of the opening 2091 ′ may extend to the blowing fan inlet 2042 side to guide air to be introduced to the blowing fan 2040 .

Accordingly, unlike the exemplary embodiment of the present invention, even when a part of the drain tray 2090 ′ is exposed on the suction passage 2120 ′, the air may be guided by the blower fan without restricting the flow of air.

That is, in the case of the conventional air conditioner, a part of the drain tray is disposed on the suction passage to obstruct the flow of air. According to another embodiment of the present invention, the drain tray 2090' is the suction guide 2100'. ) together with a streamlined suction flow path 2120 ′ is not limited to limit the flow of air, so it is possible to solve the problem that has occurred in the prior art.

Hereinafter, the control box 200 will be described in detail.

69 is an exploded perspective view of a control box according to an embodiment of the present invention. 70 is a plan view of a printed circuit board according to an embodiment of the present invention. 71 is a plan view of a printed circuit board assembled to a lower case of a control box according to an embodiment of the present invention. 72 to 75 are views illustrating a state in which a wire is mounted on a wire holder according to an embodiment of the present invention.

66 to 69 , the control box 2200 may be disposed on the edge of the opening 2091 of the drain tray 2090 .

The control box 2200 may include a curved portion 2250 corresponding to the outer peripheral surface of the opening 2091 . This is to prevent the control box 2200 from being disposed on the outer circumferential surface of the opening 2091 and not being disposed between the suction passage 2120 .

That is, the curved portion 2250 of the control box 2200 is disposed to correspond to the edge of the opening 2091 , so that the control box 2200 is disposed outside the drain tray 2090 , in particular, disposed inside the opening 2091 . may not include

In the case of a conventional air conditioner, the control box may be disposed on the drain tray similarly to the embodiment of the present invention, but the control box is provided in a rectangular box shape so that a part of the control box is exposed to the outside of the drain tray, so that the suction passage 2120 ), which restricts the flow of air, causing noise and reducing the flow rate.

However, as in an embodiment of the present invention, the control box 2200 is not exposed to the outside of the drain tray 2090 by the curved portion 2250, so that the control box 2200 is not disposed on the suction passage 2120, so that the conventional control box 2200 is not disposed. problem can be solved.

Also, as the control box 2200 includes the curved portion 2250 , it may be covered by the suction guide 2100 . In detail, the curved portion 2250 may be provided in a shape corresponding to the outer circumferential surface of the opening 2091 , and may be provided in a shape corresponding to the outer circumferential surface of the suction guide 2100 .

Since the outer circumferential surface of the suction guide 2100 passes through the opening 2091 , it has a radius of curvature corresponding to the inner circumferential surface of the opening 2091 , and the curved portion 2250 is a curved surface having a radius of curvature corresponding to the outer circumferential surface of the opening 2091 . Since it includes, the outer circumferential surface of the suction guide 2100 and the curved portion 2250 may include a curved surface of a corresponding shape.

The suction guide 2100 by the curved portion 2250 has no portion in which the control box 2200 protrudes to the inside of the suction guide 2100, so that it may be provided to include a streamlined inner circumferential surface as a whole without an additional change in the external appearance.

The control box 2200 is provided radially outside the opening 2091 and is provided on the drain tray 2090 , and the suction port 2011 and the drain tray 2090 are provided based on the vertical direction of the indoor unit 2001 of the air conditioner. can be provided in between.

As described above, since the round portion 2111 of the suction guide 2100 is formed between the suction port 2011 and the drain tray 2090 , the control box 2200 has a curved portion corresponding to the round portion 2111 in the vertical direction. (2250) may be further included.

In detail, when the curved portion 2250 corresponding to the opening 2091 is referred to as the first curved portion 2251 , the control box 2200 is a second curved portion including a curved surface corresponding to the round portion 2111 in the vertical direction. (2252).

The control box 2200 may be covered by the suction guide 2100 by the second curved portion 2252 . Since the second curved portion 2252 has a curved surface corresponding to the round portion 2111 , the control box 2200 may be disposed adjacent to the outer peripheral surface of the suction guide 2100 .

Accordingly, the suction guide 2100 may be provided to include a streamlined inner circumferential surface as a whole without an additional change in the external shape because the control box 2200 does not have a portion protruding to the inside of the suction guide 2100 even in the vertical direction.

69, the control box 2200 includes an upper case 2210 including a first curved portion 2251 and a second curved portion 2252 and a lower case including a first curved portion 2251 ( 2220 , and a printed circuit board 2230 provided between the upper case 2210 and the lower case 2220 .

As shown in FIG. 70 , the printed circuit board 2230 may include a first curved portion 2251 . Since the printed circuit board 2230 is assembled inside the cases 2210 and 2220 , the overall shape of the control box 2200 is maintained.

However, when the printed circuit board 2230 has a smaller area than the cases 2210 and 2220 and is disposed only in a part of the inner area of the cases 2210 and 2220, unlike the exemplary embodiment of the present invention, the printed circuit board 2230 is The first curved portion 2251 may not be included.

As shown in FIG. 71 , a wire holder 2260 on which a wire 2231 extending from the printed circuit board 2230 is mounted may be formed in the lower case 2220 .

The printed circuit board 2230 may be electrically connected to the internal configuration of the indoor unit 2001 of the air conditioner by wires 2231 to control internal configurations. At this time, when the wire 2231 is complicatedly disposed inside the cases 2210 and 2220 , the wire 2231 may be damaged, so that the wire holder 2260 may be provided to easily arrange the wire 2231 .

The wire holder 2260 may be provided on one side or both sides of the space in which the printed circuit board 2230 is disposed in the lower case 2220 . A portion of the wire 2231 extending from the printed circuit board 2230 to both sides is mounted on the wire holder 2260 and may extend to the outside of the cases 2210 and 2220 .

The wire holder 2260 may be formed by three hooks 2261,262,2263 arranged in a triangular shape. However, the present invention is not limited to one embodiment and may be formed of two hooks and may be provided with four or more hooks.

Based on the arrangement of the triangular shape, each hook 2261, The protrusions 2262 and 2263 may be disposed toward the center side of the triangular arrangement.

Passing regions 2264, 2265, and 2266 through which the wire 2231 passes may be provided between each of the hooks 2261,262,2263, respectively.

A first passage area 2264 between the first hook 2261 and the second hook 2262, a second passage area 2265 between the second hook 2262 and the third hook 2263, and the third hook ( When defining the space between 2263) and the first hook 2261 as the third passage region 2266, the wire 2231 passes through at least two different passage regions among the three passage regions 2264, 2265, and 2266 described above. It may pass through and extend into the cases 2210 and 2220 .

72 to 75 , when the wire 2231 extends from the lower side of the printed circuit board 2230 with respect to the plane of the lower case 2220 , the wire 2231 is the first passing area 2264 . ) and the second passing area 2265 may extend to the outside of the cases 2210 and 2220.

In addition, when the length of the wire 2231 is long and it is necessary to adjust the length, a part of the wire 2231 may be extended to the third passage region 2266 to adjust the length.

When extending from the upper side of the printed circuit board 2230 , the wire 2231 may pass through the first passing area 2264 and the third passing area 2266 to extend outside the cases 2210 and 2220 .

In addition, when the length of the wire 2231 is long and it is necessary to adjust the length, a portion of the wire 2231 may be extended to the second passage region 2265 to adjust the length.

Although the technical idea of the present invention has been described with reference to specific embodiments, the scope of the present invention is not limited to these embodiments. Various embodiments that can be modified or modified by those of ordinary skill in the art within the scope that do not deviate from the gist of the present invention specified in the claims will also fall within the scope of the present invention.

1,200,300,400,500,600,700 : Indoor unit of air conditioner
10: housing 14: Coanda curved part
15: grill 16: drain tray
20: inlet 21: outlet
30: heat exchanger 40: blowing fan (main fan)
41: blow motor 50: air flow control device
60: air flow control fan (auxiliary fan) 61: air flow control motor
62: fan case 70: guide euro
70a, 70b, 70c: 1st, 2nd, 3rd Euro 71: Inlet
72: outlet 90: input unit
A1, A2 : Discharge airflow

Claims (19)

a housing having an inlet and an outlet;
a main flow path formed inside the housing to connect the suction port and the discharge port;
a main fan provided in the main flow path to suck air into the housing through the inlet and discharge air from the housing through the outlet; and
an auxiliary fan provided to change the direction of air discharged through the discharge port by the main fan by sucking air in the main flow path and discharging the air sucked in the main flow path to the vicinity of the discharge port; An air conditioner comprising a. According to claim 1,
The air conditioner further comprising a guide passage branched from the main passage to guide the air sucked by the auxiliary fan. The method of claim 1,
The air discharged to the vicinity of the outlet by the auxiliary fan drags the air discharged from the housing through the outlet to change the direction of the air discharged from the housing through the outlet. According to claim 1,
The air conditioner further comprising a heat exchanger provided in the main flow path. 5. The method of claim 4,
The auxiliary fan is an air conditioner that sucks air between the suction port and the heat exchanger. 5. The method of claim 4,
The auxiliary fan is an air conditioner that sucks air between the heat exchanger and the outlet. 4. The method of claim 3,
The air conditioner further comprising: an inlet through which air is introduced into the guide passage from the main passage; and a tuyere through which air is discharged from the guide passage to the vicinity of the discharge port. 8. The method of claim 7,
The air outlet is formed in the housing. 3. The method of claim 2,
The auxiliary fan is an air conditioner provided in the guide passage. 4. The method of claim 3,
The guide passage is an air conditioner formed inside the housing. 4. The method of claim 3,
The guide passage is formed outside the housing. a housing having an inlet and an outlet;
a main fan provided to suck air into the housing through the inlet and discharge air from the housing through the outlet; and
The main fan sucks some of the air sucked into the housing through the inlet, and blows the air in a direction corresponding to the direction of the air discharged from the housing through the outlet by the main fan. auxiliary fan provided; including,
Air blown by the auxiliary fan draws air discharged from the housing through the outlet by the main fan, thereby changing the direction of air discharged from the housing through the outlet by the main fan. energy. 13. The method of claim 12,
The speed of the air blown by the auxiliary fan is faster than the speed of the air discharged from the housing through the outlet. 13. The method of claim 12,
and the housing includes a Coanda curved portion formed around the outlet to induce air blown by the auxiliary fan by a Coanda effect. 15. The method of claim 14,
The direction of the air blown by the auxiliary fan corresponds to a tangential direction of the Coanda curved portion of the air conditioner. 15. The method of claim 14,
The air conditioner in which the Coanda curved portion is convex toward the outlet. 15. The method of claim 14,
The air conditioner further comprising a guide passage for guiding the air sucked by the auxiliary fan. 18. The method of claim 17,
The air conditioner further comprising an inlet for sucking air into the guide passage and an outlet for discharging air from the guide passage. 15. The method of claim 14,
The outlet is an air conditioner formed between an inner peripheral surface of the outlet and the Coanda curved portion.

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