KR101707618B1 - Air conditioner and method for controlling the same - Google Patents

Abstract

An indoor unit of an air conditioner according to an embodiment of the present invention includes a housing having a suction port and a discharge port, a heat exchanger provided inside the housing, a blowing fan for sucking air from the suction port and exchanging the sucked air with the heat exchanger, And an air flow control device for sucking air around the discharge port to control the discharge airflow discharged from the discharge port. Therefore, the direction of the discharge airflow can be controlled without the conventional blade structure, the discharge amount is increased, the flow noise is reduced, and design differentiation is possible.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an air conditioner,

The present invention relates to an air conditioner for controlling a discharge airflow without a blade structure and a control method thereof.

The air conditioner is equipped with a compressor, a condenser, an expansion valve, an evaporator, a blowing fan, and the like, and controls the temperature, humidity, air flow and the like of the room by using a refrigeration cycle. The air conditioner can be classified into a separate type having an indoor unit disposed in an indoor space and an outdoor unit disposed in an outdoor space, and an integral type in which both an indoor unit and an outdoor unit are disposed in a single housing.

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

The indoor unit of the air conditioner may have discharge airflow control means for discharging the air cooled or heated through the heat exchanger in various directions. Generally, such a discharge airflow control means is constituted by a vertical or horizontal blade provided at a discharge port and a drive device for rotating the vertical blade or the horizontal blade. That is, the indoor unit of the air conditioner controls the direction of the discharge airflow by adjusting the rotation angle of the blades.

According to the discharge airflow control structure using such a blade, the air flow is interrupted by the blades, so that the amount of air discharged is reduced, and the flow noise can be increased due to the turbulence generated around the blades. Further, since the rotation axis 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 airflow 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 sucked back into the suction port.

Another aspect of the present invention provides an air conditioner capable of preventing the air discharged from the discharge port from being sucked back into the suction port, thereby preventing dew formation inside.

Another aspect of the present invention provides an air conditioner capable of preventing the air discharged from the discharge port from being sucked back into the suction port, thereby increasing the distance over which the discharged air can reach, thereby improving the bodily sensation performance.

Another aspect of the present invention provides an air conditioner capable of preventing the air discharged from the discharge port from being sucked back into the suction port, thereby increasing the cooling and heating efficiency.

Another aspect of the present invention discloses an air conditioner including a suction guide or a control box that smoothes 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 suction port and at least one discharge port; a main fan for sucking air from the at least one suction port and discharging the air to the at least one discharge port; At least one auxiliary fan sucking air around the discharge port of the at least one discharge port to change the direction of the discharge airflow discharged from the at least one discharge port; And a guide passage for guiding air sucked by the at least one auxiliary fan; .

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

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

The at least one inlet may be located radially outward of the at least one outlet, and the at least one outlet may be located circumferentially outside of the at least one outlet.

At least one first flow path provided radially outward of the discharge port and guiding air in a circumferential direction and at least one second flow path guiding air radially inwardly from the at least one first flow path, .

The at least one discharge port may include a plurality of discharge ports spaced from each other along the circumferential direction, and the at least one second flow path may be formed between the plurality of discharge ports.

Wherein the at least one first flow path and the at least one second flow path each include a plurality of first flow paths corresponding to the plurality of auxiliary fans and a plurality of second flow paths corresponding to the plurality of auxiliary fans, And may include a flow path.

The housing may include at least one partition dividing the plurality of first flow paths.

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

Wherein the housing comprises at least one first flow path and at least one second flow path provided at a location where the at least one second flow path meets the at least one second flow path to switch the direction of air flowing in the at least one first flow path to the at least one second flow path And may include one guide portion.

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

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

The at least one outlet and the at least one inlet may each have an arc shape.

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

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 extending radially to correspond to the second discharge guide rib.

According to another aspect of the present invention, there is provided an air conditioner comprising: a housing having an inlet and a discharge port; a heat exchanger provided inside the housing; and an air inlet for sucking air from the inlet, A drain pan having an opening through which air sucked into the suction port passes, the main fan being configured to collect condensed water generated in the heat exchanger and to discharge air to the discharge port; And a control box provided on a radially outer side of the opening to receive the electric component, the control box having a curved surface portion corresponding to the opening; .

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

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

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

According to the idea of the present invention, since the indoor unit of the air conditioner controls the discharge airflow without the blades, the decrease in the discharge amount due to the interference by the blades can be reduced.

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

According to the idea 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, apart from the conventional linear shape.

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

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

According to the idea of the present invention, the air conditioner can increase the distance that the discharged air can reach, thereby improving the sensation performance.

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

According to the idea of the present invention, the air conditioner improves the flow path of the air sucked into the suction guide, thereby increasing the flow rate of the air and reducing the noise.

According to the idea of the present invention, the air conditioner includes a control box for improving the flow of air, thereby increasing the flow rate of air and reducing the noise.

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 sectional view of the indoor unit of the air conditioner of Fig. 1; Fig.
3 is an enlarged view of a portion 'O' in FIG. 2;
4 is a plan sectional view taken along a line I-I in Fig.
5 is a plan sectional view taken along the line II-II in Fig.
6 is a block diagram showing a control system of an air conditioner according to a first embodiment of the present invention;
FIG. 7 is a side sectional view showing an indoor unit of an air conditioner according to a second embodiment of the present invention. FIG.
FIG. 8 is a side sectional view of an indoor unit of an air conditioner according to a third embodiment of the present invention; FIG.
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.
12 is a side sectional view of the indoor unit of the air conditioner of Fig.
FIG. 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 sectional view showing a part of the indoor unit of the air conditioner of Fig.
Fig. 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 multi-hole. Fig.
Fig. 16 and Fig. 17 are views showing another example of the inlet of the airflow control device of the present invention in comparison with Fig. 4, in which the width of the inlet is variable. Fig.
FIG. 18 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 extending in the radial direction.
Fig. 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.
Fig. 20 is a cross-sectional view showing the essential part of the indoor unit of the air conditioner according to the eighth embodiment of the present invention compared with Fig.
FIG. 21 is a cross-sectional view illustrating a substantial 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 sectional view showing a substantial part of an indoor unit of an air conditioner according to a tenth embodiment of the present invention compared with FIG. 20;
FIG. 23 is a cross-sectional view illustrating a substantial part of an indoor unit of an air conditioner according to an eleventh embodiment of the present invention, as compared with FIG. 20;
FIG. 24 is a sectional view showing a substantial part of an indoor unit of an air conditioner according to a twelfth embodiment of the present invention, compared with FIG. 21. FIG.
FIG. 25 is a cross-sectional view illustrating a substantial part of an indoor unit of an air conditioner according to a thirteenth embodiment of the present invention, compared with FIG. 21. FIG.
26 is a perspective view of an air conditioner according to another embodiment of the present invention.
FIG. 27 is a bottom view of the air conditioner shown in FIG. 26; FIG.
28 is an exploded perspective view of the air conditioner shown in Fig.
29 is a side sectional view along the line I-I shown in Fig.
30 is a view showing another embodiment of the air conditioner shown in Fig.
FIG. 31 is a view showing still another embodiment of the air conditioner shown in FIG. 26;
Fig. 32 is a view showing still another embodiment of the air conditioner shown in Fig. 26;
33 is a perspective view of the drain tray shown in Fig.
34 is an enlarged view of the discharge guide rib shown in Fig.
35 is a view showing another embodiment of the discharge guide rib shown in FIG.
36 is a view showing another embodiment of the discharge guide rib shown in Fig.
37 is an enlarged view of the portion 'O' shown in FIG.
FIG. 38 is an exploded perspective view showing the intermediate housing and the lower housing shown in FIG. 28; FIG.
FIG. 39 is a view showing the flow of air by the airflow control device of the air conditioner shown in FIG. 26;
Fig. 40 is a sectional view showing a portion of the air conditioner shown in Fig. 26 provided with a display unit.
Fig. 41 is a view showing an outlet of the air conditioner shown in Fig. 26;
Fig. 42 is a view of another embodiment of the outlet port shown in Fig. 41, viewed from the radial direction of the discharge port.
FIG. 43 is a view showing another embodiment of the outlet port shown in FIG. 41 in the radial direction of the discharge port.
44 is a perspective view showing still another embodiment of the outlet port shown in Fig.
45 is a perspective view showing still another embodiment of the outlet port shown in Fig.
FIG. 46 is a bottom view of the air conditioner with the grill removed shown in FIG. 26; FIG.
47 is an oblique view of the portion 'A' shown in FIG. 46 from the lower side.
48 is an oblique view of the portion 'B' shown in FIG. 46 from the lower side.
49 is a view showing another embodiment of the lower housing shown in Fig.
50 is a view showing still another embodiment of the lower housing shown in FIG.
51 is a cross-sectional view taken along the line II-II shown in Fig.
FIG. 52 is a bottom view of the intermediate housing shown in FIG. 28; FIG.
53 is a view showing another embodiment of the intermediate housing shown in Fig.
54 is a view showing still another embodiment of the intermediate housing shown in Fig.
55 is a view showing still another embodiment of the intermediate housing shown in Fig.
56 is a view showing still another embodiment of the lower housing shown in FIG.
FIG. 57 is a view showing still another embodiment of the air conditioner shown in FIG. 26; FIG.
FIG. 58 is a view showing still another embodiment of the air conditioner shown in FIG. 26; FIG.
59 is a perspective view illustrating an indoor unit of an air conditioner according to another embodiment of the present invention.
60 is a side sectional view taken along the line II shown in Fig.
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 an air conditioner according to another embodiment of the present invention;
63 is a rear view of the air conditioner in a state where the second lower housing is removed according to another embodiment of the present invention.
Fig. 64 is an enlarged view of a portion of Fig. 60; Fig.
65 is a rear perspective view of the air conditioner according to another embodiment of the present invention in a state in which the suction panel is separated;
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 part of the structure 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 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 according to an embodiment of the present invention assembled in a lower case of a control box;
72 to 75 are views showing a state where a wire is mounted on a wire mounting portion 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. 2 is a side sectional view of the indoor unit of the air conditioner of FIG. 3 is an enlarged view of the portion 'O' in FIG. 4 is a plan sectional view taken along a line I-I in Fig. 5 is a plan sectional view taken along the line II-II in Fig. The side sectional view of FIG. 2 is strictly a rotational sectional view taken along the line III-III of FIG.

1 to 5, an indoor unit of an air conditioner according to a first embodiment of the present invention will be described.

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

The indoor unit 1 of the air conditioner includes a housing 10 having a suction port 20 and a discharge port 21, a heat exchanger 30 provided inside the housing 10, a blowing fan 40 ).

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

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

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

The lower housing 13 may have a curved inner curved surface portion 14 for guiding air discharged through the discharge port 21. [ The curved surface portion 14 of the curtain can guide the airflow discharged through the discharge port 21 to closely contact with the curved surface portion 14 of the curtain.

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

The heat exchanger 30 may be composed of a tube 32 through which refrigerant flows (FIG. 5) and a header 31 (FIG. 5) which is heated with the external refrigerant tube to supply or recover the refrigerant to the tube 32. The tube 32 may be provided with a heat exchange fin to increase the heat dissipation area.

The heat exchanger 30 may have a substantially circular shape when viewed in the 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 the condensed water generated in the heat exchanger 30 can be collected in the drain tray 16.

The blowing fan 40 may be provided inside the heat exchanger 30 in the radial direction. The blowing fan 40 may be a centrifugal fan that sucks air in the axial direction and discharges the air in the radial direction. The indoor unit (1) of the air conditioner may be provided with a blowing motor (41) for driving the blowing fan (40). 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 can be discharged into the room after sucking the air in the room, cooling the room, or heating the room by sucking the air in the room.

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

The airflow control device 50 can control the direction of the discharge air stream by sucking the air around the discharge port 21 and changing the pressure. Also, the airflow control device 50 can control the amount of air sucked around the discharge port 21. That is, the airflow control device 50 can control the direction of the discharge airflow by controlling the amount of air sucked around the discharge port 21.

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

The airflow control device (50) can suck air from one side of the advancing direction of the discharge air stream when sucking the air around the discharge port (21).

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

At this time, the angle to be switched according to the suction amount can be adjusted. That is, when the suction amount is made smaller, the angle is changed to a smaller angle, and when the suction amount is increased, the traveling direction can be changed to a larger angle.

The airflow control device 50 can discharge the sucked air to one side of the advancing direction A1 of the discharging airflow (D). Particularly, the airflow control device 50 can discharge air in a direction opposite to the direction in which it is sucked. Thereby, the angle of the discharge airflow can be further increased, and the airflow control can be performed more smoothly.

The airflow control device 50 can suck air at the radially outer side of the discharge port 21 (or at the upper side of the discharge airflow). Since the airflow control device 50 sucks air from the radially outer side of the discharge port 21 as described above, the discharge airflow can spread widely radially outward from the radial center portion of the discharge port 21. [

The airflow control device 50 includes an airflow control fan 60 for generating a suction force for sucking air around the discharge port 21, an airflow control motor 61 for driving the airflow control fan 60, And a guide passage 70 for guiding the air sucked by the suction passage 60.

The airflow control fan 60 can be accommodated in the fan case 62. In this 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 this embodiment, the centrifugal fan is used as the airflow control fan 60. However, the present invention is not limited to this, and various fans such as an axial flow fan, a cross flow fan, and a sultry fan may be used according to design specifications.

The guide passage 70 connects an inlet 71 for sucking air around the discharge port 21 and an 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, the guide flow path 70 is formed to be branched from the main flow path.

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

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 port 72 may be formed in the fan case 62.

With this configuration, as described above, the airflow control device 50 can discharge the sucked air to one side in the moving direction A1 of the discharging airflow. Particularly, the airflow control device 50 can discharge air in the direction opposite to the direction in which the airflow is sucked, whereby the angle of the discharge airflow can be further increased, and the airflow control can be made more smooth.

The guide passage 70 includes a first passage 70a formed in the circumferential direction outside the housing 10 and communicating with the inlet 71 and a second passage 70b extending radially inwardly from the first passage 70a And a third flow path 70c formed in the fan case 62. [ The second flow path 70b may be formed inside the bridge 70d across the discharge port 21. [

Therefore, the air sucked through the inlet port 71 can be discharged through the outlet port 72 through the first flow path 70a, the second flow path 70b, and the third flow path 70c.

The structure of the guide passage 70 is only one example. The guide passage 70 is sufficient to connect the inlet 71 and the outlet 72, and the structure, shape, and arrangement of the guide passage 70 are not limited.

With this configuration, the indoor unit of the air conditioner according to the embodiment of the present invention can control the discharge airflow without the blade structure, as compared with the conventional structure in which the blades are provided at the discharge port and the discharge airflow is controlled by the rotation of the blades. Accordingly, since there is no interference by the blades, 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 has a linear shape in order to rotate the blades. However, the discharge port of the indoor unit of the air conditioner according to the embodiment of the present invention may be circular, The housing and the heat exchanger can also be provided in a circular shape so that the aesthetics can be improved by the differentiated design and the flow of the airflow is natural and the pressure loss is reduced As a result, the cooling or heating performance of the air conditioner can be improved.

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

The air conditioner includes a control unit 92 for controlling the overall operation, an input unit 90 for receiving an operation command, an outdoor temperature sensor 91a for sensing the outdoor temperature, a room temperature sensor 91b for sensing the indoor temperature, An evaporator temperature sensor 91c for detecting the evaporator temperature, a display unit 83 for displaying various information on the outside, a compressor driving unit 94 for driving the compressor 95, an electronic expansion valve 96, A blowing 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, The blower fan driving unit 97 and the airflow control fan driving unit 98. The air flow control fan drive unit 98 controls the air blowing fan 93, the compressor driving unit 94, the electronic expansion valve 96,

The airflow control fan drive unit 98 can control whether the airflow control motor 61 is driven or not according to a control command of the control unit 92. [ Thereby, the suction amount of the air around the discharge port 21 can be controlled and the direction of the discharge airflow can be controlled.

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

The airflow control device 250 of the indoor unit 200 of the air conditioner sucks the air around the discharge port 21 and discharges the sucked air into the housing 10.

In this embodiment, the airflow control device 250 discharges the air sucked around the discharge port 21 to the upstream side of the heat exchanger 30 along the airflow direction. The air thus discharged is cooled or heated again through the heat exchanger 30, and finally discharged through the discharge port 21 to the room.

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

The guide passage 270 is formed to connect the inlet 271 and the outlet 272. The guide passage 270 includes a first passage 270a formed in the circumferential direction and communicated with the inlet 271, a second passage 270b extending radially inwardly from the first passage 270a, And a fourth flow path 270d extending from the third flow path 270c to the inside of the housing 10 and communicating with the outflow port 272. [

Therefore, the air sucked through the inlet 271 can be discharged through the outlet 272 through the first flow path 270a, the second flow path 270b, the third flow path 270c, and the fourth flow path 270d have.

However, the structure of the guide passage 270 is only an example, and the guide passage 270 is sufficient to connect the inlet 271 and the outlet 272, and the structure, shape, and arrangement of the guide passage 270 are not limited.

8 is a side sectional view showing an indoor unit of an air conditioner according to a third embodiment of the present invention. Referring to FIG. 8, the indoor unit of the air conditioner according to the third embodiment of the present invention will be described. The same reference numerals are assigned to the same components as those of the above-described embodiments, and description thereof may be omitted.

The airflow control device 350 of the indoor unit 300 of the air conditioner is capable of controlling the airflow in the radially outer side of the discharge port 21 (or in the upper side of the discharge airflow) (From the lower side of the discharge air stream). For this purpose, an inlet port 371 for sucking air around the discharge port 21 may be provided radially inward of the discharge port 21.

The air sucked through the inlet 371 can be discharged to the outlet 372 through the guide passage 370 (D).

Since the airflow control device 350 sucks air in the radial direction of the discharge port 21 in this manner (S), the discharge airflow can be concentrated radially outward of the discharge port 21 toward the radial center side.

9 is a plan sectional view showing 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. The same reference numerals are assigned to the same components as those of the above-described embodiments, and description thereof may be omitted.

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

The housing 410 may have a substantially rectangular shape when viewed in the vertical direction. A suction port through which air is sucked is formed at the center of the bottom surface of the housing 410, and a discharge port 421 through which air is sucked is formed outside the bottom surface of the suction port.

The discharge port 421 has a substantially rectangular shape when viewed in the vertical direction, and the corner portion 421a may be rounded. The discharge port of the indoor unit of the conventional air conditioner has a linear 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 Lt; / RTI >

Unlike the present embodiment, the discharge port 421 may have various polygonal shapes such as a triangular shape, a pentagonal shape, and a hexagonal shape in addition to a rectangular shape.

The heat exchanger 430 may include a tube 432 through which refrigerant flows and a header 431 through which refrigerant is supplied to and recovered from the tube 432 by the external refrigerant tube. And a blowing fan 440 may be provided inside the direction.

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

The indoor unit 500 of the air conditioner includes a housing 510 having a suction port and a discharge port 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 the vertical direction. A suction port through which air is sucked is formed at the center of the bottom surface of the housing 510 and a discharge port 521 through which air is sucked may be formed outside the bottom surface of the housing 510.

When the discharge port 521 is viewed in the vertical direction, the discharge port 521 has a substantially rectangular shape as a whole, and each side may be formed in a curved shape instead of a straight shape. The discharge port of the indoor unit of the conventional air conditioner has a linear 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 and thus can be formed in a curved shape .

The heat exchanger 530 may include a tube 532 through which refrigerant flows and a header 531 through which refrigerant is supplied to and recovered from the tube 532 by the external refrigerant tube. And 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 sectional view of the indoor unit of the air conditioner of FIG.

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

The indoor unit 600 of the air conditioner can be installed on the wall W. The indoor unit 600 of the air conditioner includes a housing 610 having a suction port 620 and a discharge port 621, a heat exchanger 630 provided inside the housing 610, a blowing fan 640 ).

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 for sucking air is formed on a front surface and an upper surface of the front housing 611 and a discharge port 621 for discharging air may be formed on a lower portion of the front housing 611. Accordingly, the indoor unit 600 of the air conditioner can suck air from the front and the upper side, and after cooling and heating, can be discharged downward.

As in 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 curved surface portion 614 for guiding air discharged through the discharge port 621. The curved inner surface portion 614 can guide the airflow discharged through the discharge opening 621 to closely contact with the curved inner surface 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 for controlling the direction of the discharge air stream by sucking air around the discharge port 21 to change the pressure.

The airflow control device 650 includes an airflow control fan 660 for generating a suction force for sucking air around the discharge port 621, an airflow control motor 661 for driving the airflow control fan 660, And a guide passage 670 for guiding the air sucked by the suction passage 660.

The guide passage 70 connects an inlet port 671 for sucking air around the discharge port 621 and an outlet port 672 for discharging the sucked air. The inlet 671 may be formed in the curved inner surface 614 of the housing 610.

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

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

The indoor unit 700 of the air conditioner may be provided to stand on the floor F. [ The indoor unit 700 of the air conditioner includes a housing 710 having a suction port 720 and a discharge port 721, a heat exchanger 730 provided inside the housing 710, a blowing fan 740 ).

The housing 710 may include a front housing 711, an intermediate housing 712, and a rear housing 713. A suction port 720 for sucking is formed on the upper surface, a side surface and a rear surface of the rear housing 713 and a discharge port 721 for discharging air is formed on the front surface of the front housing 611. Accordingly, the indoor unit 700 of the air conditioner can suck air from the upper side, the side, and the rear to discharge air forward after cooling and heating.

As in 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 curved inner surface portion 714 for guiding the air discharged through the discharge opening 721. The curved inner surface portion 714 can guide the airflow discharged through the discharge port 7621 to flow closely to the curved inner surface portion 714 of the nose. The blowing fan 740 may be either a mixed-flow fan or an axial flow fan.

The indoor unit 700 of the air conditioner further includes an air flow control device 750 for controlling the direction of the air discharge flow by sucking air around the air outlet 721 to change the pressure.

The airflow control device 750 includes an airflow control fan 760 for generating a suction force for sucking air around the discharge port 621, an airflow control motor 761 for driving the airflow control fan 760, And a guide passage 770 for guiding the air sucked by the suction passage 760.

The guide passage 770 connects an inlet port 771 for sucking air around the discharge port 721 and an outlet port 772 for discharging the sucked air. The inlet 671 may be formed in the curved inner surface 714 of the housing 610.

Fig. 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 a multi-hole.

Referring to FIG. 15, the inlet 171 of the airflow control device may be formed by collecting a plurality of small holes 172. That is, a plurality of small holes 172 form a group to form an arc-shaped slit, and the at least one slit can be gathered to form an inlet 171. [

Thus, the inflow port 171 is formed of a plurality of small holes 172, so that dust, foreign matter, and the like can be prevented from being sucked through the inflow port 171.

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

16 and 17, the inlet 173 of the airflow control device includes at least one arc-shaped slit 174, and the width W of the slit 174 can be varied . That is, the opening of the slit 174 can be adjusted.

To this end, the airflow control device may have a closure plate 175 that is expanded and contracted to adjust the opening of the slit 174. 16, the width Wmax of the slit 174 is maximized when the closure plate 175 is minimized, and when the closure plate 175 is maximally expanded as shown in Fig. 17, 174 can be minimized.

By adjusting the opening degree of the inlet port 173, the suction flow rate through the inlet port 173 can be adjusted and thus the direction of the discharge air flow can be controlled.

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

Referring to FIG. 18, the inlet 176 of the airflow control device may include a plurality of slits 177 formed to extend in the radial direction. The plurality of slits 177 may be arranged to be spaced apart from one another along the circumferential direction.

With this configuration, the resistance can be reduced at the time of sucking air around the discharge port 21, so that the power required for sucking, that is, the number of revolutions of the fan can be reduced.

Fig. 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.

As shown in Fig. 19, the inlet 178 of the airflow control device may be composed of a plurality of slits 179a, 179b having an arc shape.

The plurality of slits 179a and 179b may be composed of an inner slit 179a disposed in a relatively radially inward direction and an outer slit 179b disposed in a relatively radially outward direction. The inner slit 179a and the outer slit 179b may be spaced apart from each other by a predetermined distance.

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

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

That is, the number of the plurality of slits 179a, 179b, the respective widths, intervals, and the like can be variously designed as needed.

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

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

Unlike the above-described embodiments, the airflow control device 450 can control the direction of the discharge airflow by blowing 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 controls the direction of the discharge airflow The direction of the discharge airflow can be controlled.

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

Here, the control of the direction of the discharge airflow means to control the angle of the discharge airflow. In other words, it means to control whether to concentrate discharge air or spread it widely.

The airflow control device 450 can blow air from one side of the advancing direction of the discharge airflow when air around the discharge port 21 is blown.

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

The airflow control device 450 can blow air from the inside of the radial direction of the discharge port 21 (or from the lower side of the discharge airflow). That is, when the airflow control device 450 is not operated, and the discharge airflow is discharged relatively intensively, the discharge airflow can be spread out relatively widely radially outwardly when the airflow control device 450 is operated.

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

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

Referring to Fig. 21, the indoor unit of the air conditioner according to the ninth embodiment of the present invention will be described. The same reference numerals are assigned to the same components as those of the above-described embodiments, and description thereof may be omitted.

The airflow control device 550 can control the direction of the discharge airflow by changing the pressure by blowing air around the discharge port 21 as in the eighth embodiment described above. However, unlike the eighth embodiment described above, the airflow control device 550 can blow air outward in the radial direction of the discharge port 21 (or on the upper side of the discharge airflow).

That is, when the airflow control device 550 is not operated, if the discharge airflow is widely spread radially outwardly and discharged, when the airflow control device 550 is operated, the discharge airflow is intensively discharged in the relatively radially inward direction .

The airflow control device 550 includes an airflow control fan 560 for generating a blowing force for blowing air around the discharge port 21, an airflow control motor 561 for driving the airflow control fan 560, And a guide passage 570 for guiding air flowing by the fan 560. The guide passage 570 connects a blowing port 572 for blowing air around the discharge port 21 and an inlet port 571 for sucking air.

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

Referring to FIG. 22, the indoor unit of the air conditioner according to the tenth embodiment of the present invention will be described. The same reference numerals are assigned to the same components as those of the above-described embodiments, and description thereof may be omitted.

The airflow control device 650 can control the direction of the discharge airflow by blowing air around the discharge port 21 and changing the pressure. However, unlike the airflow control device of Figs. 20 and 21, which controls the discharge airflow by pushing the discharge airflow, the airflow control device 650 can control the discharge airflow by pulling out the discharge airflow.

A curved inner curved surface portion 614 is formed around the discharge port 21 and the airflow control device 650 can discharge the auxiliary air flow X in the tangential direction of the curved inner curved surface portion 614.

The curved inner surface portion 614 can guide the auxiliary airflow X discharged through the outlet 672 to closely contact with the surface of the curved inner surface portion 614 due to the Coanda effect. The corona curved surface portion 614 may be formed integrally with the housing 10 such as the lower housing 13.

The curved surface portion 614 may have a convex shape toward the discharge port 21. Therefore, the auxiliary airflow X flowing along the Coanda curved surface portion 614 is accelerated and the pressure can be reduced. Therefore, the main airflow discharged to the discharge port 21 is drawn toward the auxiliary airflow X side so that the direction can be switched from the A1 direction to the A2 direction.

The direction of the auxiliary airflow X discharged through the outlet 672 may be the same as the tangential direction of the nose curved surface portion 614 and substantially the same as the direction of the main airflow.

The guide passage 670 for guiding the auxiliary airflow X connects the inlet 671 for sucking in 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, the guide flow path 70 is formed to be branched from the main flow path.

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

The airflow control device 650 can blow the auxiliary airflow X radially outward (or above the main airflow) of the discharge port 21. That is, if the main discharge airflow is discharged relatively intensively when the airflow control device 650 is not operated, the main discharge airflow can be discharged with a relatively wide spread 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 a plurality of airflow control fans 660 may be provided if necessary.

The airflow control device 650 can increase the speed of the auxiliary airflow X in order to increase the force of attracting the auxiliary airflow X to the airflow. In other words, as the speed of the auxiliary airflow X becomes faster, the pressure decrease becomes greater and the pulling force of the main airflow can be increased. The velocity of the auxiliary airflow X may be at least higher than the main airflow.

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

FIG. 23 is a cross-sectional view showing a substantial part of an indoor unit of an air conditioner according to an eleventh embodiment of the present invention compared to FIG.

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

The airflow control device 750 can control the discharge airflow by blowing air around the discharge port 21 by pulling out the discharge airflow like the airflow control device 650 of FIG.

Unlike the airflow control device 650 in FIG. 22, the airflow control device 750 can blow the auxiliary airflow X radially inward (or below the main airflow) of the discharge port 21. That is, when the airflow control device 750 is not operated, if the main discharge airflow is spread relatively widely, the main discharge airflow can be discharged relatively intensively when the airflow control device 750 is operated.

A curved inner curved surface portion 714 is formed around the discharge port 21 and the airflow control device 750 can discharge the auxiliary airflow X in the tangential direction of the curved inner surface portion 714. [

The curved inner surface portion 714 can induce the auxiliary airflow X discharged through the outlet 772 to closely contact with the surface of the curved inner surface portion 714 by the Coanda effect.

The curved surface portion 714 may have a convex shape toward the discharge port 21. [ Therefore, the auxiliary airflow X flowing along the Coanda curved surface portion 714 is accelerated and the pressure can be reduced. Therefore, the main airflow discharged to the discharge port 21 is drawn toward the auxiliary airflow X side so that the direction can be switched from the A1 direction to the A2 direction.

The direction of the auxiliary airflow X discharged through the outlet 772 may be the same as the tangential direction of the curved inner surface portion 714 and at the same time the direction of the main airflow.

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

The outflow port 772 is formed in the vicinity of the curved inner surface portion 714 so that the auxiliary airflow X is discharged in the tangential direction of the curved inner surface portion 714. Concretely, the outlet 772 may be formed between the inner peripheral surface 22 of the discharge port 21 and the curved inner surface 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 a plurality of airflow control fans 760 may be provided if necessary.

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

Referring to Fig. 24, the indoor unit of the air conditioner according to the twelfth embodiment of the present invention will be described. The same reference numerals are assigned to the same components as those of the above-described embodiments, and description thereof may be omitted.

The airflow control device 850 can control the discharge airflow by drawing air around the discharge port 21 like the airflow control device 650 in FIG.

Unlike the airflow control device 650 in FIG. 22, the airflow control device 850 does not generate the auxiliary airflow X by sucking air around the air outlet 21, So that the auxiliary airflow X can be generated.

That is, a part of the air cooled through the heat exchanger 30 is discharged to the outlet port 872 through the guide passage 870 to form the auxiliary air flow X and the remaining part of the air is discharged to the discharge port 21, Can be formed.

A curved inner curved surface portion 814 is formed around the discharge port 21 so that the airflow control device 850 can discharge the auxiliary airflow X in the tangential direction of the curved inner surface portion 814.

The guide passage 870 for guiding the auxiliary airflow X connects an inlet 871 for sucking in air and an 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 the auxiliary airflow X and an airflow control motor 861 for driving the airflow control fan 860. [

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

Referring to Fig. 25, the indoor unit of the air conditioner according to the thirteenth embodiment of the present invention will be described. The same reference numerals are assigned to the same components as those of the above-described embodiments, and description thereof may be omitted.

The airflow control device 950 can control the discharge airflow by blowing air around the discharge port 21 by pulling out the discharge airflow like the airflow control device 750 of FIG.

Unlike the airflow control device 750 in FIG. 23, the airflow control device 950 does not generate the auxiliary airflow X by sucking air around the air outlet 21, So that the auxiliary airflow X can be generated.

Part of the air on the upstream side of the heat exchanger 30 is discharged to the outlet port 972 through the guide passage 970 to form the auxiliary air flow X and the remaining part of the air is discharged to the discharge port 21, .

A curved inner curved surface portion 914 is formed around the discharge port 21 and the airflow control device 950 can discharge the auxiliary airflow X in the tangential direction of the curved inner surface portion 914.

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

The airflow control device 950 may further include an airflow control fan 960 for blowing air to generate the 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 bottom view of the air conditioner shown in FIG. 26; FIG. 28 is an exploded perspective view of the air conditioner shown in Fig. 29 is a side sectional view along the line I-I shown in Fig.

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

The air conditioner 1001 may be installed in the ceiling C of the vehicle. At least a part of the air conditioner 1001 can be embedded in the ceiling C.

The air conditioner 1001 includes a housing 1010 having a suction port 1020 and a discharge port 1021, a heat exchanger 1030 provided inside the housing 1010, and a blowing fan 1040 for flowing air .

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

A suction port 1020 through which air is sucked is formed at the center of the lower housing 1013 and a discharge port 1021 through which air is sucked may be formed outside the suction port 1020 in the radial direction. The discharge port 1021 may have a substantially circular shape when viewed in the vertical direction.

With this structure, the air conditioner 1001 can suck air from the lower side to cool and heat the air, and then discharge air to the lower side again.

The lower housing 1013 may have a first guide surface 1014a and a second guide surface 1014b which form a discharge port 1021. [ The first guide surface 1014a may be provided adjacent to the inlet port 1020 and the second guide surface 1014b may be spaced from the inlet port 1020 more than the first guide surface 1014a. The first guide surface 1014a and / or the second guide surface 1014b may include a curved surface portion for guiding air discharged through the discharge port 1021. The curved surface portion of the nose can guide the airflow discharged through the discharge port 1021 to flow close to the curved surface portion of the nose.

A grill 1015 may be coupled to the bottom of the lower housing 1013 to filter dust from the air drawn into the inlet 1020.

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

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

The blowing fan 1040 may be provided radially inward of the heat exchanger 1030. The blowing fan 1040 may be a centrifugal fan that sucks air in the axial direction and discharges the air in the radial direction. The air conditioner 1001 may be provided with a blowing motor 1041 for driving the blowing fan 1040.

With this configuration, the air conditioner 1001 can discharge air into the room after sucking the air in the room and discharging the air into the room or by sucking the air in the room.

The air conditioner 1001 may further include a heat exchanger pipe 1081 connected to the heat exchanger 1030 and a drain pump 1082 for discharging the condensed water collected in the drain tray 1016 to the outside . The heat exchanger pipe 1081 and the drain pump 1082 may be provided on an upper portion of a bridge 1100 to be described later so as not to block the inlet. Specifically, the heat exchanger pipe 1081 can be seated in a heat exchanger pipe seat portion 1016a provided in the drain tray 1016, and the drain pump 1082 can be seated in the drain pump seat portion 1016b provided in the drain tray 1016 (See FIG. 33).

Referring to FIG. 27, the air conditioner 1001 may further include a bridge 1100 provided adjacent to the discharge port 1021 and extending in a circumferential direction of the discharge port 1021 by a predetermined length. The bridges 1100 may be spaced apart from each other by a predetermined 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.

A relatively high pressure is formed around the discharge port 1021 and a relatively low pressure is formed around the suction port 1020 when the discharge port 1021 is provided in a circular shape and air is discharged from all directions. Air to be sucked through the suction port 1020 can not be supplied to the suction port 1020 because air is discharged from all directions of the discharge port 1021 and forms an air curtain. In this situation, the air discharged from the discharge port 1021 is again sucked through the suction port 1020, and the re-sucked air causes dew condensation inside the housing 1010, and the discharged air is lost, .

The bridge 1100 according to an embodiment of the present invention is provided on the discharge port 1021 to block the discharge port 1021 by a predetermined length. Accordingly, the discharge port 1021 is divided into a first section S1 where air is discharged and a second section S2 which is blocked by the bridge 1100 and in which almost no air is discharged. That is, the bridge 1100 may form a second section S2 for supplying air to be sucked through the suction port 1020. [ The bridge 1100 can reduce the pressure difference between the low pressure around the suction port 1020 and the high pressure around the discharge port 1021 so that the air can be smoothly supplied to the suction port 1020.

The bridge 1100 may include a pair of discharge guide surfaces 1101 that are closer to the direction in which air is discharged so as 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 can be spread and discharged from the discharge port 1021 more widely.

The air conditioner 1001 shown in FIG. 27 has three bridges 1100 arranged at equal intervals, that is, at an angle of 120 degrees. However, the present invention is not limited to this, and as shown in FIG. 30 Only one bridge 1100a may be provided. 31, two bridges 1100b may be provided at an angle of 180 °, and four bridges 1100c may be provided at an angle of 90 °, as shown in FIG. 32 . The plurality of bridges 1100, 1100b, and 1100c may be disposed at different angles along the circumferential direction of the discharge port 1021. [ It is also possible that five or more bridges are provided although not shown. That is, the number of bridges is not limited.

However, the total length of the bridges 1100, 1100a, 1100b, and 1100c is preferably 5% or more of the circumferential length of the entire discharge port in order to smoothly supply the air to be sucked through the suction port 1020 by forming the second section S2 40% or less. 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.

When a plurality of bridges 1100, 1100b and 1100c are provided, display units 1120, 1120b and 1120c are provided under one of the bridges 1100, 1100b and 1100c of the plurality of bridges 1100, 1100b and 1100c, Can be provided.

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

33, the air conditioner may further include a discharge guide rib 1110 provided on the discharge opening 1021a and extending in the vertical direction along the discharge direction of the air. Specifically, the discharge guide ribs 1110 may be provided in 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 a discharge guide rib 1110 is provided on the drain tray discharge port 1021a, The flow rate of the air discharged through the drain tray outlet 1021a can be increased. The discharge guide ribs 1110 can guide air to be discharged so that the air spreads from the drain tray discharge port 1021a and can be discharged. The discharge guide rib 1110 may be provided to correspond to the first section S1 of the discharge port 1021 where the bridge 1100 is not formed.

In addition, the discharge guide ribs 1110 are 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 along the circumferential direction of the drain tray discharge port 1021a and a second discharge guide rib 1112 extending along the radial direction of the drain tray discharge port 1021a, . ≪ / RTI >

The first discharge guide ribs 1111 are formed along the circumferential direction of the drain tray discharge port 1021a and the second discharge guide ribs 1112 are formed along the radial direction of the drain tray discharge port 1021a to form drain tray discharge ports 1021a Can be reduced 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 part of the discharge guide rib 1110 shown in Fig.

34, the second discharge guide ribs 1112a may be arranged to be inclined downward toward the bridge 1100 as they are disposed adjacent to the bridges 1100 when viewed from the radial direction of the drain tray discharge port 1021a. That is, the second discharge guide ribs 1112a can be coupled with the first discharge guide ribs 1111a such that the air discharged from the central portion toward both sides is inclined in a direction of spreading. Accordingly, the second discharge guide rib 1112a can spread the air discharged from the drain tray discharge port 1021a toward the bridge 1100 to be discharged, thereby minimizing the second section S2. That is, air can be discharged in all directions as much as possible in the air conditioner 1001.

35, the second discharge guide rib 1112b is inclined downward in a direction away from the bridge 1100 as it is disposed adjacent to the bridge 1100 when viewed from the radial direction of the drain tray discharge port 1021a . That is, the second discharge guide ribs 1112b can be coupled with the first discharge guide ribs 1111b so that the air discharged toward the both sides from the central portion is inclined. Accordingly, the second discharge guide ribs 1112b may collect air discharged from the drain tray discharge port 1021a to form a strong air flow.

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

The first discharge guide rib 1111 may be inclined so as to be 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 flows to the drain tray And may be spread and discharged from the suction port 1020 along the radial direction of the discharge port 1021a.

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

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

Referring to Figs. 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 can control the direction of the discharge airflow by sucking the air around the discharge port 1021 and changing the pressure. Further, the airflow control device 1050 can control the amount of air sucked around the discharge port 1021. [ In other words, the airflow control device 1050 can control the direction of the discharge airflow by controlling the amount of air sucked around the discharge port 1021.

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

The airflow control device 1050 can suck air from one side of the direction of advance of the discharge air stream when sucking the air around the discharge port 1021. [

37, if the advancing direction of the discharge airflow when the airflow control device 1050 is not in operation is the A1 direction, the airflow control device 1050 operates to suck air from one side in the direction A1 So that the advancing direction of the discharge airflow can be switched to the direction A2.

At this time, the angle to be switched according to the suction amount can be adjusted. That is, when the suction amount is made smaller, the angle is changed to a smaller angle, and when the suction amount is increased, the traveling direction can be changed to a larger angle.

The airflow control device 1050 can suck air from the radially outer side of the discharge port 1021. [ Since the airflow control device 1050 sucks air from the outside of the discharge port 1021 in the radial direction, the discharge airflow can spread widely radially outward from the radial center of the discharge port 1021. [

The airflow control device 1050 includes an airflow control fan 1060 for generating a suction force for sucking air around the discharge port 1021, an airflow control motor 1061 for driving the airflow control fan 1060, And a guide passage 1070 for guiding the air sucked by the suction passage 1060.

The airflow control fan 1060 may be accommodated in a fan case 1062 provided at one end adjacent to the intake 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 the present invention is not limited thereto, and the number and arrangement of the airflow control fans 1060 may be determined by the number of bridges 1100, And can be variously designed as a layout.

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

The guide passage 1070 connects an inlet 1071 for sucking air around the outlet 1021 and an 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 on 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 advancing direction A1 of the discharging airflow, can further increase the angle of the discharging airflow, It can be made more smoothly.

37 and 38, the guide passage 1070 includes a first passage 1070a formed in a circumferential direction outside the housing 1010 and communicating with the inlet port 1071, and a second passage 1070b formed in the first passage 1070a, A second flow path 1070b extending inward in a direction and a third flow path 1070c formed in the inside of the fan case 1062. [ Here, the second flow path 1070b may be formed in the bridge 1100.

Accordingly, the air sucked through the inlet port 1071 can be discharged through the outlet port 1072 through the first flow path 1070a, the second flow path 1070b, and the third flow path 1070c.

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

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 on the lower side of the bridge 1100.

In the case where the air introduced through the inlet port 1071 is cooled air, when the cooled air passes through the bridge 1100, the temperature difference between the inside and the outside of the bridge 1100 through which the cooled air passes, That is, dew formation may occur on the lower surface 1103 of the bridge 1100.

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

27 and 40, the air conditioner 1001 may further include a display unit 1120 on the lower side of one of the plurality of bridges 1100.

The display unit 1120 can 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 airflow, displays whether the air conditioner 1001 is being driven in the current cooling mode or in the heating mode The present invention is not limited thereto and various information related to the air conditioner 1001 can be displayed.

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 where the display unit 1120 is provided can also be spread and discharged from the discharge port 1021.

A communication unit (not shown) for communicating with a remote control receiver (not shown), an input unit (not shown) of the air conditioner 1001, and an external device, in addition to the display unit 1120, It is also possible that at least one of them is provided.

When the display unit 1120 is provided below the bridge 1100, the outlet 1072 can not discharge air toward the lower surface 1103 of the bridge 1100. Therefore, a heat insulating material 1121 is provided between the display unit 1120 and the bridge 1100 to prevent a dew forming problem that may occur on the display unit 1120 side.

39 and 41, the outlet 1072 may further include an outlet rib 1073 extending along the direction in which air is discharged from the outlet 1072. [ That is, the outlet ribs 1073 may extend in the radial direction of the discharge port 1021. The outlet ribs 1073 may extend in the horizontal and vertical directions of the outlet 1072. 41 shows one outlet rib 1073 extending in the vertical direction and four outlet ribs 1073 extending in the horizontal direction. However, the number of the outlet ribs 1073 is not limited thereto.

The outlet ribs 1073 are connected to the lower surface 1103 of the bridge 1100 so that the air discharged from the outlet 1072 can be discharged in substantially the same direction as the discharge air flow discharged from the discharge port 1021, As shown in Fig.

The outlet ribs 1073 are connected to the discharge port 1021 so as to discharge the air from the discharge port 1021 when the airflow control device 1050 is not driven, that is, when a part of the air discharged from the discharge port 1021 does not flow through the inlet port 1071 It is possible to prevent a part of the air from flowing into the outlet 1072. [

Fig. 42 is a view of another embodiment of the outlet port shown in Fig. 41, viewed from the radial direction of the discharge port. FIG. 43 is a view showing another embodiment of the outlet port shown in FIG. 41 in the radial direction of the discharge port. 44 is a perspective view showing still another embodiment of the outlet port shown in Fig. 45 is a perspective view showing still another embodiment of the outlet port shown in 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.

44, the outlet ribs 1073c of the outflow ports 1072 extending in the vertical direction are arranged so that the air discharged from the outflow ports 1072 spreads toward both sides of the outflow ports 1072, And can be disposed at an inclination by a predetermined angle.

45, the outlet rib 1073d of the outflow port 1072 extending in the horizontal direction is formed so that the air discharged from the outlet port 1072 has an inclination substantially equal to the inclination of the lower surface 1103 of the bridge 1100, And may be provided so as to be inclined downward toward the direction in which air is discharged from the discharge port 1072. The air discharged from the outlet 1072 can be discharged naturally on the lower surface 1103 of the bridge 1100 and the loss due to collision with the lower surface 1103 of the bridge 1100 can be reduced .

FIG. 46 is a bottom view of the air conditioner with the grill removed shown in FIG. 26; FIG. 47 is an oblique view of the portion 'A' shown in FIG. 46 from the lower side. 48 is an oblique view of the portion 'B' shown in FIG. 46 from the lower side. 49 is a view showing another embodiment of the lower housing shown in Fig. 50 is a view showing still another embodiment of the lower housing shown in FIG.

46 and 47, the airflow control fan 1060 of the air conditioner 1001 is provided at a lower portion of the bridge 1100, and the air sucked from the inlet port 1071 is radially outward of the discharge port 1021 Through the outlet 1072. [0156] Fig. The outlet 1072 may be provided on the opposite side of the outlet 1021 where the inlet 1071 is formed.

46 and 48, when the display unit 1120 is provided below the bridge 1100, the airflow control fan 1060a is connected to the inlet 1020 of the bridge 1100 disposed above the display unit 1120 And the display unit 1120 is provided inside the discharge port 1021 in the radial direction.

The outlet 1072a through which the 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. [ More 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 without the display unit 1120 from the airflow control fan 1060a An opening 1063a through which the air is discharged is provided in the left direction of the display unit 1120 and an extension 1063a connecting the opening 1063a of the airflow control fan 1060a and the outlet 1072a provided on the first guide surface 1014a The duct 1064a can be disposed. The air sucked through the inlet 1071 can be discharged through the outlet 1072a formed on the left side of the display unit 1120 without interfering 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. Fig. In this case, the fan case 1062b in which the airflow control fan 1060b is accommodated is provided with the opening 1063b through which the air is discharged from the airflow control fan 1060b in the right direction of the display unit 1120, An extension duct 1064b connecting the opening 1063b of the first guide surface 1060b and the outlet port 1072b provided on the first guide surface 1014a can be disposed. The air sucked through the inlet 1071 can be discharged through the outlet 1072b formed on the right side of the display unit 1120 without interfering with the display unit 1120. [

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

Specifically, the fan case 1062c, in which the airflow control fan 1060c is accommodated, opens the opening 1063c through which the air is discharged from the airflow control fan 1060c toward the rear of the display unit 1120, And a fourth flow path (not shown) may be provided to connect the opening 1063c of the airflow control fan 1060c and the outlet formed in the housing 1010. [ Accordingly, the air introduced through the inlet 1071 can flow out through the outlet after passing sequentially through the airflow control fan 1060c, the opening 1063c of the airflow control fan 1060c, and the fourth flow path.

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

Referring to FIGS. 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 that defines a first flow path 1070a communicating with the inlet 1071. [ The partition 1012a may be provided to correspond to the number of bridges 1100. The partition 1012a is provided at a midpoint between the plurality of bridges 1100 on the first flow path 1070a and can be partitioned to symmetrically define the first flow path 1070a around the respective bridges 1100. [ The partition 1012a can partition the guide passage 1070 formed between the plurality of airflow control fans 1060.

That is, when three bridges 1100 ', 1100', 1100 '' 'are provided as shown in FIG. 51, the partition 1012a is connected to each of the bridges 1100', 1100 '', 1100 '' '). Accordingly, the first flow path 1070a is divided into a first portion P1, a second portion P2, and a third portion P3, and the first portion 1070a of the bridge 1100 ', 1100' ', 1100' The air flowing 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 air in a portion corresponding to the first portion P1 of the air discharged through the discharge port 1021 And 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 of the air discharged through the discharge port 1021 flows through the inlet port 1021, And flows into the first flow path 1070a through the first flow path 1071. When the airflow control fan 1060 disposed at one end of the third bridge 1100 '' 'is driven, only air in a portion corresponding to the third portion P3 of the air discharged through the discharge port 1021 And then flows into the first flow path 1070a through the inlet 1071. [ Here, the airflow control fans 1060 arranged adjacent to the respective bridges 1100 ', 1100' ', 1100' '' can be driven independently of each other. Accordingly, in the case of the air conditioner shown in FIG. 26, independent discharge airflows can be formed in three directions around the bridge 1100.

51, airflows different from each other can be formed by a predetermined section 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 the one end of the bridge 1100 where the airflow control fan 1060 is provided. The guide portion 1017 may be provided at the other end of the bridge 1100 into which the air sucked in the vicinity of the discharge port 1021 flows. The guide portion 1017 may be provided at a position where the first flow path 1070a and the second flow path 1070b meet. The guide unit 1017 guides the air flowing from the first flow path 1070a provided on the left and right sides of the bridge 1100 to the first flow path 1070a To the bridge 1100. As shown in Fig. That is, the guide portion 1017 can guide air so that the air introduced through the inlet 1071 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 left-right symmetrical curved surface.

Referring to FIG. 53, the partition 1012b may be provided at a predetermined distance from the intermediate point on the first flow path 1070a between the bridges 1100. FIG. In other words, the partition 1012b may be disposed adjacent to any one of the bridges 1100.

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

In the case of the embodiment shown in Fig. 54, different airflows can be formed based on the ejection openings 1021 between the plurality of bridges 1100.

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

In the case of the embodiment shown in FIG. 55, different airflows can be formed based on the ejection openings 1021 between the plurality of bridges 1100.

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

Fig. 57 is a view showing still another embodiment of the air conditioner 1001 shown in Fig. In describing the embodiment shown in Fig. 57, the same components as those of the air conditioner 1001 shown in Fig. 26 are denoted by the same reference numerals and the description thereof may be omitted.

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

FIG. 58 is a view showing still another embodiment of the air conditioner shown in FIG. 26; FIG. 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 description thereof may be omitted.

The air conditioner 1003 shown in Fig. 58 may further include an auxiliary intake port 1083 for sucking outdoor air in addition to the inlet port 1020. [ The auxiliary suction port 1083 may be provided on the outer circumferential surface of the upper housing 1011. The auxiliary intake port 1083 can be embedded in the ceiling C. The auxiliary intake port 1083 may be provided outside the ceiling C. The outdoor air introduced through the auxiliary intake port 1083 may be discharged through the discharge port 1021 after passing through the heat exchanger 1030 in 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 sucked back to the suction port 1020, thereby preventing the occurrence of dew condensation inside the housing 1010 It is possible to reduce the loss of the discharge airflow and improve the user's bodily sensation performance.

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

59 to 64, a schematic configuration of an air conditioner according to an embodiment of the present invention will be described.

The indoor unit 2001 of the air conditioner can be installed in the ceiling C At least a part of the indoor unit 2001 of the air conditioner can be embedded in the ceiling C.

The indoor unit 2001 of the air conditioner includes a housing 2010 having an inlet 2011 and a discharge opening 2033, a heat exchanger 2080 provided inside the housing 2010, a blowing fan 2040 ).

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

The lower housing 2030 includes a first lower outer housing 2031a disposed on the lower side along the periphery of the intermediate housing 2021 and including an annular shape and a second lower outer housing 2031a disposed radially inward of the first lower outer housing 2031a, And a second lower housing 2032 which is coupled to the lower side of the first lower inner housing 2031b and covers the lower side of the first lower inner housing 2031b. The first lower inner housing 2031b includes: (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.

A suction opening 2011 may be provided at the center of the lower housing 2030 so as to communicate with the air blowing fan 2040 from outside to suck outside air. That is, the center portion of the second lower housing 2032 is opened, and the space from the opening of the second lower housing 2032 to the blowing fan 2040 is communicated, so that the outside air can be introduced into the inside of the housing 2010 .

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

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

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

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

The inner peripheral surface of the first lower outer housing 2031a may be formed with a curved surface portion for guiding the air discharged through the discharge port 2033. The curved surface portion 2034 of Coanda can guide the airflow discharged through the discharge port 2033 to closely contact with the curved surface portion 2034 of Coanda.

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

A suction guide 2100 may be provided at the center of the second lower housing 2032 to guide air flowing through the suction panel 2015 to the blowing fan 2040. An opening is formed in the central portion of the second lower housing 2032 and the suction guide 2100 is guided to the second lower housing 2032 to guide air flowing into the opening and flowing to the blowing fan 2040. [ ). ≪ / RTI >

The heat exchanger 2080 may have a substantially circular shape when viewed in the vertical direction.

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

The blowing fan 2040 may be provided radially inward of the heat exchanger 2080. The blowing fan 2040 may be a centrifugal fan that sucks air in the axial direction and discharges the air in the radial direction. The indoor unit 2001 of the air conditioner may be provided with a blowing motor 2041 for driving the blowing fan 2040. And may include a blowing fan inlet 2042 through which the air sucked in the inlet 2011 flows into the blowing fan 2040.

With such a configuration, the indoor unit 2001 of the air conditioner can discharge the indoor air after sucking and cooling the indoor air, or after sucking indoor air by heating the indoor air.

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 can control the direction of the discharge airflow by sucking the air around the discharge port 2033 and changing the pressure. Further, the airflow control device 2050 can control the amount of air sucked around the discharge port 2033. [ That is, the airflow control device 2050 can control the direction of the discharge airflow by controlling the suction amount of the air around the discharge port 2033.

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

The airflow control device 2050 can suck air from one side of the advancing direction of the discharging airflow when sucking the air around the discharging port 2033. [

That is, as shown in Fig. 64, when the direction of the discharge airflow when the airflow control device 2050 is not in operation is the direction A1, the airflow control device 2050 operates to suck air from one side in the direction A1 So that the advancing direction of the discharge airflow can be switched to the direction A2.

At this time, the angle to be switched according to the suction amount can be adjusted. That is, when the suction amount is made smaller, the angle is changed to a smaller angle, and when the suction amount is increased, the traveling direction can be changed to a larger angle.

The airflow control device 2050 can discharge the sucked air to the side opposite to the traveling direction A1 of the discharge airflow. Thereby, the angle of the discharge airflow can be further increased, and the airflow control can be performed more smoothly.

The airflow control device 2050 can suck air from the radially outer side of the discharge port 2033. [ Since the airflow control device 2050 sucks air from the radially outer side of the discharge port 2033, the discharge airflow can spread widely radially outward from the radial center portion of the discharge port 2033. [

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

The airflow control fan 2060 can be received 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 to this, and the airflow control fan 60 may be disposed inside the lower housing 2030, and it may include the first lower inner housing 2031b or the second lower inner housing 2031b as well as the first lower outer housing 2031a. Or may be disposed in a space provided by the second arm 2032.

In this 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 can be variously designed.

In the present embodiment, a centrifugal fan is used as the airflow control fan 2060, but the present invention is not limited thereto. Various fans such as an axial flow fan, a cross flow fan, and a sultry fan may be used according to design specifications.

The guide passage 2070 connects an inlet 2071 for sucking air around the discharge port 2033 and an outlet 2072 for discharging the sucked air.

The inlet 2071 may be formed in the curved inner surface 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 advancing direction A1 of the discharging airflow, and can further increase the angle of the discharging airflow, It can be made more smoothly.

The guide passage 2070 includes a first passage 2070a formed in the housing 2010 in the circumferential direction and communicating with the inlet 2071 and a second passage 2070b extending radially inwardly from the first passage 2070a. And a third flow path 2070c formed in a region where the airflow control fan 2060 is seated.

Accordingly, the air sucked through the inlet 2071 can be discharged through the outlet 2072 through the first flow path 2070a, the second flow path 2070b, and the third flow path 2070c.

The guide passage 2070 may be formed by the intermediate housing 2021, the first lower housing 2031a, 2031b, and the second lower housing 2032. [ The first flow path 2070a and the second flow path 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 path 2070c is formed in the inner space formed by the second And an internal 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. The guide passage 2070 suffices to connect the inlet 2071 and the outlet 2072, and the structure, shape, and arrangement of the guide passage 2070 are not limited.

The first lower outer housing 2031a may be provided with a bridge 2074 which defines a discharge port 2033 and forms a second flow path 2070b. 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 airflow without the blade structure, as compared with the conventional structure in which the blades are provided at the discharge port and the discharge airflow is controlled by the rotation of the blades. Accordingly, since there is no interference by the blades, 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 has a linear shape in order to rotate the blades. However, the discharge port of the indoor unit of the air conditioner according to the embodiment of the present invention may be circular, The housing and the heat exchanger can also be provided in a circular shape so that the aesthetics can be improved by the differentiated design and the flow of the airflow is natural and the pressure loss is reduced The cooling air or the heating performance of the air conditioner can be improved. [0053] Hereinafter, the suction guide 2100 for guiding the air sucked into the indoor unit 2001 of the air conditioner will be described in detail.

65 is a rear perspective view of a suction panel of an air conditioner according to another embodiment of the present invention. 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 part of an air conditioner according to another embodiment of the present invention.

As shown in FIG. 65, a suction guide 2100 may be provided between the suction inlet 2011 and the blowing fan inlet 2042 to guide the outside air introduced into the housing 2010.

The suction guide 2100 extends from the suction inlet 2011 to the blowing fan inlet 2042 and is connected to the inlet 2011 and the blowing fan 2040 so that external air can pass through the inlet 2011 and enter the blowing fan 2040. [ As shown in Fig.

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

The guide surface 2110 may be formed as an annular surface that surrounds the outer circumferential surface of the suction inlet 2011 and extends to the blowing fan inlet 2042 as a part of the inner circumferential surface of the suction guide 2100. The guide surface 2110 may extend from the inlet 2011 to the blower fan inlet 2042 through an opening 2091 provided at the center of the drain tray 2090.

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

The suction guide 2100 may include a round portion 2111 formed of a curved surface rounded between the suction inlet 2011 and the blowing fan inlet 2042. 65, the round portion 2111 may be rounded from the inlet 2011 to the inside of the housing 2010 between the drain tray 2090. In addition,

The guide surface 2110 described above may include the round portion 2111 and may extend to the side adjacent to the blowing fan inlet 2042. In detail, the guide surface 2110 can be defined as the inner circumferential surface of the suction guide 2100 from the round portion 2111 to the blowing fan inlet port 2042 side.

The suction passage 2120 is formed in a streamlined shape by the round portion 2111 so that air can smoothly flow from the suction inlet 2011 to the blowing fan inlet 2042. [

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

That is, the radius of the guide surface 2110 formed on the side adjacent to the blowing fan inlet 2042 is smaller than the radius of the guide surface 2110 formed on the side adjacent to the suction portion 2011, The rounding portion 2111 may include a curved surface that is convex inward of the housing 2010 with respect to the rotational axis of the blowing fan 2040. [

The round part 2111 is not limited to the embodiment of the present invention and may be provided in a round shape extending from the inlet 2011 to the direction in which the blowing fan inlet 2042 is located, And may include a curved surface concaved inward of the housing 2100.

The round portion 2111 begins to curve from the side adjacent to the inlet 2011 and the curvature between the inlet 2011 and the drain tray 2090 can be terminated.

That is, one side of the round portion 2111 is disposed in a region located above the inlet 2011 and the other side of the round portion 2111 is disposed between the inlet 2011 and the drain tray 2090. The round portion 2111, The other side of the round portion 2111 may be curved so as to be rotated by about 90 degrees with respect to one side of the round portion 2111.

However, the present invention is not limited to this embodiment, and the round part 2111 may start to bend at the inlet 2011 and the other side of the round part 2111 may penetrate the drain tray 2090 and be connected to the blowing fan inlet 2042 So that the curvature can be extended from the suction inlet 2011 to the blowing fan inlet 2042.

According to the round portion 2111, the guide surface 2110 is not provided with a surface disposed perpendicularly to the rotational axis of the blowing fan 2040, so that air can smoothly flow.

The suction guide 2100 extends from the suction inlet 2011 to the blower fan inlet 2042 through the drain tray 2090 so that the drain tray 2090 is covered by the suction guide 2100 so as not to be exposed to the outside .

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 communicated from the outside to the blowing fan 2040 And may be exposed to the outside. Therefore, 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 peripheral surface of the suction guide 2100. That is, the guide surface 2110 may be provided so as to separate the suction passage 2120 and the drain tray 2090 from each other.

In the conventional air conditioner, a part of the drain tray is disposed on the suction flow path to interfere with the flow of air. Particularly, in the case of a part of the drain tray disposed perpendicularly to the rotational axis of the blowing fan, the flow of the inhaled air is blocked to reduce the amount of air flowing into the blowing fan, and there is a problem that a large noise is generated by colliding with the drain tray.

However, according to the embodiment of the present invention, the suction guide 2100 separates the drain tray 2090 from the suction passage 2120, thereby solving the problem that has occurred in the past.

Particularly, when the drain tray 2090 is detached, the round section 2111 is disposed in the section where the drain tray 2090 is covered, so that the air can flow smoothly into the blowing fan 2040 without interfering with the flow of air. It was.

As will be described later, internal components of the indoor unit 2001 of the air conditioner such as the control box 2200 can be disposed on the rim of the opening 2091 and are disposed on the suction passage 2120 covered by the suction guide 2100 .

The suction guide 2100 covers internal parts such as the drain tray 2090 and the control box 2200 and is arranged on the suction passage 2120 by the round portion 2111 in a direction perpendicular to the rotation axis of the blowing fan 2040 So that the fluidity of the air can be enhanced and the noise caused by the friction can be minimized.

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

The suction guide 2100 includes a first suction port 2042a and a second suction port 2042b. The first suction port 2042a is provided at a side of the blowing fan 2040 in which air is sucked into the blowing fan 2040, The opening provided in the housing 2010 is referred to as a third inlet 2011a and the opening provided in the drain tray 2090 through the third inlet 211a to pass through the drain tray 2090 is referred to as a second inlet (2091a).

At this time, the suction guide 2100 is extended from the first suction port 2042a to the third suction port 2011a, and has a second suction port (not shown) provided between the first suction port 2042a and the third suction port 2011a 2091a. (See FIG. 61)

As the suction guide 2100 passes through the second suction port 2091a, the suction guide 2100 is rotated in a direction in which the drain tray 2090 disposed outside the outer circumferential surface of the suction guide 2100 is inhaled by the suction guide 2100, Thereby separating it from the flow path 2120.

The third suction port 2011a may be formed to have a larger radius than the first suction port 2042a by the round portion 2111 and the second suction port 2091a disposed therebetween may have a radius larger than the third suction port 2011a small.

Hereinafter, a suction guide 2100 'according to another embodiment of the present invention will be described. Structures other than the structure of the suction guide 2100 'and the drain tray 2090' described below are the same as those of the above-described embodiment, and the description thereof is omitted.

68 is a sectional view of a suction guide part of an air conditioner according to another embodiment of the present invention.

 The suction guide 2100 'extends from one side where the suction inlet 2011 is provided to the other side where the drain tray 2090' is located so that external air is sucked through the suction guide 2100 'and the drain tray 2090' May be provided between the suction port 2011 and the drain tray 2090 'so as to be introduced into the blowing fan 2040 through the suction holes 2011 and 2090'.

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

That is, the suction passage 2120 'may be formed by a part of the suction guide 2100' and the drain tray 2090 ', unlike the suction passage 2120' according to the embodiment of the present invention. In detail, since the guide surface 2110 'extends from the round portion 2111 to one side of the inner circumferential surface of the opening 2091' of the drain tray 2090 ', the suction passage 2120' extends along the guide surface 2110 ' And extends to the other side of the inner circumferential 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 '. The air can be guided from the suction inlet 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 surface 2110' without any separation, the side of the guide surface 2110 'in contact with the opening 2091' and the inner circumferential surface of the opening 2091 ' Lt; / RTI > Accordingly, the suction flow path 2120 'is not formed in a direction perpendicular to the rotation axis of the air blowing fan 2040, so that the air can flow into the air blowing fan 2040 without being restricted in flow.

The other side of the inner circumferential surface of the opening 2091 'may extend to the blowing fan inlet 2042 side to guide air to the blowing fan 2040.

Accordingly, unlike the embodiment of the present invention, even if a part of the drain tray 2090 'is exposed on the suction passage 2120', the air can be guided to the blowing fan without limiting the flow of air.

That is, in the conventional air conditioner, a part of the drain tray is disposed on the suction flow path to obstruct the flow of air. According to another embodiment of the present invention, the drain tray 2090 ' And the suction flow path 2120 'including a streamlined shape is formed to restrict the flow of air, thereby solving the problem that has occurred in the past.

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 according to an embodiment of the present invention assembled in a lower case of a control box. 72 to 75 are views showing a state where a wire is mounted on a wire fixing part according to an embodiment of the present invention.

As shown in FIGS. 66 to 69, the control box 2200 can be disposed on the edge side of the opening 2091 of the drain tray 2090.

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

That is, the curved surface portion 2250 of the control box 2200 is disposed corresponding to the edge side of the opening 2091, and the control box 2200 is arranged outside the drain tray 2090, particularly, inside the opening 2091 . ≪ / RTI >

In a conventional air conditioner, a control box may be disposed in a drain tray similar to an embodiment of the present invention, but a 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, ), Thereby limiting the flow of air, generating noise and reducing the flow rate.

However, since the control box 2200 is not exposed to the outside of the drain tray 2090 by the curved surface portion 2250 as in the embodiment of the present invention, the control box 2200 is not disposed on the suction passage 2120, Can be solved.

Also, the control box 2200 may be covered by the suction guide 2100 as it includes the curved portion 2250. In detail, the curved surface portion 2250 is 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.

The outer circumferential surface of the suction guide 2100 has a radius of curvature corresponding to the inner circumferential surface of the opening 2091 and penetrates the opening 2091. The curved surface portion 2250 has a curved surface having a radius of curvature corresponding to the outer circumferential surface of the opening 2091, The outer circumferential surface of the suction guide 2100 and the curved surface portion 2250 may include curved surfaces of corresponding shapes.

The curved surface portion 2250 prevents the control box 2200 from protruding to the inside of the suction guide 2100 so that the suction guide 2100 can be formed to include a streamlined inner peripheral surface as a whole without any change in the external shape.

The control box 2200 is provided radially outward of the opening 2091 and is provided on the drain tray 2090 and has a suction port 2011 and a drain tray 2090 with respect to the vertical direction of the indoor unit 2001 of the air conditioner. Respectively.

Since the round portion 2111 of the suction guide 2100 is formed between the suction port 2011 and the drain tray 2090 as described above, the control box 2200 has the curved surface portion 2111 corresponding to the round portion 2111 in the vertical direction, (2250).

Specifically, when the curved surface portion 2250 corresponding to the opening 2091 is referred to as a first curved surface portion 2251, the control box 2200 includes a second curved surface portion 2211 including a curved surface corresponding to the rounded portion 2111 in the vertical direction, (2252).

The control box 2200 can be covered with the suction guide 2100 by the second curved surface portion 2252. [ Since the second curved surface portion 2252 has a curved surface corresponding to the rounded portion 2111, the control box 2200 can be disposed adjacent to the outer circumferential surface of the suction guide 2100.

Accordingly, the suction guide 2100 may be provided so as to include a streamlined inner circumferential surface as a whole without a change in the outer shape of the suction guide 2100 because the control box 2200 does not protrude inwardly of the suction guide 2100 even in the vertical direction.

69, the control box 2200 includes an upper case 2210 including a first curved surface portion 2251 and a second curved surface portion 2252, and a lower case 2210 including a first curved surface 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, it is necessary to maintain the shape of the control box 2200 as a whole.

Unlike the embodiment of the present invention, the printed circuit board 2230 has a smaller area than the case 2210 and 2220, and the printed circuit board 2230 is disposed only on a part of the internal area of the case 2210 and 2220, And may not include the first curved surface portion 2251.

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

The printed circuit board 2230 can be electrically connected to the internal structure of the indoor unit 2001 of the air conditioner by the wire 2231 to control the internal structures. The wire 2231 may be broken when the wire 2231 is disposed inside the cases 2210 and 2220 so that the wire 2230 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 where the printed circuit board 2230 is disposed in the lower case 2220. A wire 2231 extending to both sides of the printed circuit board 2230 can be partially mounted on the wire mounting portion 2260 and extended outside the case 2210 and 2220.

The wire mounting portion 2260 may be formed by three hooks 2261, 2262, 2263 arranged in a triangular shape. However, the present invention is not limited to the embodiment of the present invention, but may be formed of two hooks and four or more hooks.

The first hook 2261 disposed on the upper side with respect to the arrangement of the triangular shape, the second hook 2262 disposed on the lower left side, and the third hook 2263 disposed on the lower right side, 2262 and 2263 may be arranged to face the center side of the triangular arrangement.

Between the hooks 2261, 2262, 2263, passage regions 2264, 2265, 2266 through which the wire 2231 passes may be respectively provided.

A first passage area 2264 is provided between the first hook 2261 and the second hook 2262 and a second passage area 2265 is provided between the second hook 2262 and the third hook 2263, 2263 and the first hook 2261 is defined as a third passage area 2266, the wire 2231 is provided with at least two different passing areas of the three passage areas 2264, 2265, And may extend inside the cases 2210 and 2220.

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 as shown in Figs. 72 to 75, the wire 2231 is connected to the first pass area 2264 And the second passage region 2265 and 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 part of the wire 2231 can be extended to the third passage area 2266 to adjust the length.

The wires 2231 may extend outside the cases 2210 and 2220 through the first pass area 2264 and the third pass area 2266 when extending above the printed circuit board 2230. [

Further, when the length of the wire 2231 is long and the length needs to be adjusted, a part of the wire 2231 can be extended to the second passage area 2265 to adjust the length.

Although the technical idea of the present invention has been described above with reference to specific embodiments, the scope of rights of the present invention is not limited to these embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents.

1,200,300,400,500,600,700: indoor unit of air conditioner
10: Housing 14: Coanda curved portion
15: Grill 16: Drain tray
20: inlet 21: outlet
30: heat exchanger 40: blowing fan (main fan)
41: blower motor 50: air flow control device
60: airflow control fan (auxiliary fan) 61: airflow control motor
62: Fan case 70: Guide channel
70a, 70b, 70c: first, second and third flow paths 71: inlet
72: outlet 90: input
A1, A2: Discharge airflow

Claims (20)

A housing having at least one inlet and at least one outlet;
A main fan for sucking air from the at least one suction port and discharging the air to the at least one discharge port;
At least one auxiliary fan sucking air around the at least one discharge port and changing the direction of the discharge air flow discharged from the at least one discharge port; And
A guide passage provided to guide the air sucked by the at least one auxiliary fan; Lt; / RTI >
Wherein the housing includes an inlet through which air is sucked by the guide passage and an outlet through which the air in the guide passage is discharged,
Wherein the at least one auxiliary fan sucks air around the at least one discharge port so as to draw the discharge airflow toward the inlet side. The method according to claim 1,
Wherein the housing includes a lower housing having the at least one suction port and the at least one discharge port, and an intermediate housing coupled to the upper side of the lower housing,
Wherein the guide passage is formed between the intermediate housing and the lower housing. delete The method according to claim 1,
Wherein said at least one inlet is located radially outwardly of said at least one outlet and said at least one outlet is located circumferentially outside said at least one outlet. The method according to claim 1,
At least one first flow path provided radially outward of the discharge port and guiding air in a circumferential direction and at least one second flow path guiding air radially inwardly from the at least one first flow path, Included air conditioners. 6. The method of claim 5,
Wherein the at least one discharge port includes a plurality of discharge ports spaced from each other along the circumferential direction,
Wherein the at least one second flow path is formed between the plurality of discharge ports. 6. The method of claim 5,
Wherein the at least one auxiliary fan includes a plurality of auxiliary fans,
Wherein the at least one first flow path and the at least one second flow path each include a plurality of first flow paths and a plurality of second flow paths corresponding to the plurality of auxiliary fans. 8. The method of claim 7,
Wherein the housing includes at least one partition dividing the plurality of first flow paths. 8. The method of claim 7,
Wherein each of the plurality of first flow paths is symmetrical in a circumferential direction about a corresponding auxiliary fan. 6. The method of claim 5,
Wherein the housing comprises at least one first flow path and at least one second flow path provided at a location where the at least one second flow path meets the at least one second flow path to switch the direction of air flowing in the at least one first flow path to the at least one second flow path An air conditioner comprising a guide part. The method according to claim 6,
Wherein the housing includes at least one bridge formed between the plurality of discharge ports to form the at least one second flow path. 12. The method of claim 11,
At least one fan case for receiving said at least one auxiliary fan,
Wherein the at least one fan case is provided in the at least one bridge. 12. The method of claim 11,
And a display unit for displaying information,
Wherein the display unit is mounted to the at least one bridge. The method according to claim 1,
Wherein the at least one outlet and the at least one inlet each have an arc shape. delete delete delete delete delete delete

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