AU2018334927B2

AU2018334927B2 - Ceiling-type indoor unit of air conditioner

Info

Publication number: AU2018334927B2
Application number: AU2018334927A
Authority: AU
Inventors: Minjin EOM; Hyeongnam Yun
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2017-09-20
Filing date: 2018-09-20
Publication date: 2022-04-21
Anticipated expiration: 2038-09-20
Also published as: KR20190033031A; CN111373209A; EP3686507A1; KR102090648B1; KR20190033033A; EP3686509B1; KR20190033032A; EP3686509A1; EP3686509A4; WO2019059682A1; EP3686507B1; KR102088828B1; EP3686506A4; KR20190033030A; AU2018337544A1; EP3686508A4; AU2018337546B2; AU2018337541B2; EP3686507A4; CN111373200A

Abstract

The present invention is advantageous in that when indoor load is determined, if the indoor load is high, a dynamic cooling step or dynamic heating step is provided to converge indoor temperature to a target temperature; and if the indoor load is low, indirect wind is provided, thereby improving satisfaction of a person in a room.

Description

INDOOR UNIT OF AIR CONDITIONER

[Technical Field]

The present disclosure relates to a method of

controlling a ceiling type indoor unit of an air

conditioner, and more particularly a method of controlling

a ceiling type indoor unit capable of controlling first,

second, third, and fourth vane module at the time of indoor

cooling or heating.

[Background]

In general, an air conditioner includes a compressor,

a condenser, an evaporator, and an expander, and supplies

cool air or hot air to a building or a room using an air

conditioning cycle.

Based on the structure thereof, the air conditioner is

classified as a separable air conditioner configured such

that a compressor is disposed outdoors or an integrated air

conditioner configured such that a compressor is integrally

manufactured.

In the separable air conditioner, an indoor heat

exchanger is installed in an indoor unit, an outdoor heat

exchanger and a compressor are installed in an outdoor unit,

and the two separated units are connected to each other via

a refrigerant pipe.

In the integrated air conditioner, an indoor heat

exchanger, an outdoor heat exchanger, and a compressor are

installed in a single case. Examples of the integrated air

conditioner include a window type air conditioner installed

at a window and a duct type air conditioner installed

outside a room in the state in which a suction duct and a

discharge duct are connected to each other.

The separable air conditioner is generally classified

depending on the form in which the indoor unit is installed.

D An air conditioner configured such that an indoor unit

is vertically installed in a room is called a stand type air

conditioner, an air conditioner configured such that an

indoor unit is installed at the wall of a room is called a

wall mounted air conditioner, and an air conditioner

configured such that an indoor unit is installed at the

ceiling of a room is called a ceiling type air conditioner.

In addition, there is a system air conditioner capable

of providing air-conditioned air to a plurality of spaces as

a kind of separable air conditioner.

The system air conditioner is classified as a type of

air conditioner including a plurality of indoor units in

order to air-condition rooms or a type of air conditioner

capable of supplying air-conditioned air to respective

spaces through ducts.

The plurality of indoor units provided in the system air conditioner may be stand type indoor units, wall mounted indoor units, or ceiling type indoor units.

A conventional ceiling type indoor unit includes a

case installed at a ceiling so as to be suspended therefrom

and a front panel configured to cover the lower surface of

the case, the front panel being installed at the same

surface as the ceiling.

A suction port is disposed at the center of the front

panel, and a plurality of discharge ports is disposed

D outside the suction port, and a discharge vane is installed

at each discharge port.

In the conventional ceiling type indoor unit, the

discharge vane is repeatedly rotated in a discharge vane

auto swing mode. Also, in the ceiling type indoor unit, the

discharge vane remains stationary at a specific position in

a discharge vane fixing mode.

In the conventional ceiling type indoor unit, the

discharge vane is simply controlled at the time of indoor

cooling, whereby it is difficult to satisfy desires of a

person in a room.

[Prior Art Document]

[Patent Document]

Korean Registered Patent No. 10-0679838 B1

[Summary]

It is desired to address or ameliorate one or more

disadvantages or limitations associated with the prior art,

provide a method of controlling a indoor unit of an air

conditioner, or to at least provide the public with a useful

alternative.

Another object of the present disclosure may be to

provide a method of controlling a ceiling type indoor unit

capable of rapidly air-conditioning a room or providing

indirect wind depending on an indoor load.

D Another object of the present disclosure may be to

provide a method of controlling a ceiling type indoor unit

capable of executing a dynamic mode in the case in which an

indoor load is large and providing indirect wind in the case

in which the indoor load is small.

Another object of the present disclosure may be to

provide a method of controlling a ceiling type indoor unit,

wherein opposite two of four vane modules constitute a first

discharge pair, the other two constitute a second discharge

pair, and the first discharge pair and the second discharge

pair discharge air at different angles to rapidly solve an

indoor load when the indoor load is large.

Another object of the present disclosure may be to

provide a method of controlling a ceiling type indoor unit,

wherein opposite two of four vane modules constitute a first

discharge pair, the other two constitute a second discharge pair, and the first discharge pair and the second discharge pair discharge air in different directions to rapidly solve an indoor load when the indoor load is large.

Another object of the present disclosure may be to

provide a method of controlling a ceiling type indoor unit,

wherein opposite two of four vane modules constitute a first

discharge pair, the other two constitute a second discharge

pair, one of the first discharge pair and the second

discharge pair provides indirect wind, and the other

J provides direct wind to rapidly solve an indoor load when

the indoor load is large.

A further object of the present disclosure may be to

provide a method of controlling a ceiling type indoor unit,

wherein opposite two of four vane modules constitute a first

discharge pair, the other two constitute a second discharge

pair, and the first discharge pair and the second discharge

pair alternately provide indirect wind and direct wind to

cool a room when an indoor load is large.

Objects of the present disclosure are not limited to

the aforementioned objects, and other unmentioned objects

will be clearly understood by those skilled in the art based

on the following description.

The present disclosure is capable of providing a

dynamic cooling step or a dynamic heating step such that an indoor temperature converges upon a target temperature when an indoor load is large and of providing indirect wind to improve satisfaction of a person in a room when the indoor load is small.

In the present disclosure, opposite two of four vane

modules constitute a first discharge pair, the other two

constitute a second discharge pair, and the first discharge

pair and the second discharge pair discharge air at

different angles to rapidly solve an indoor load when the

J indoor load is large.

In the present disclosure, opposite two of four vane

modules constitute a first discharge pair, the other two

constitute a second discharge pair, and the first discharge

pair and the second discharge pair discharge air in

different directions to rapidly solve an indoor load when

the indoor load is large.

In the present disclosure, opposite two of four vane

modules constitute a first discharge pair, the other two

constitute a second discharge pair, one of the first

discharge pair and the second discharge pair provides

indirect wind, and the other provides direct wind to rapidly

solve an indoor load when the indoor load is large.

In the present disclosure, opposite two of four vane

modules constitute a first discharge pair, the other two

constitute a second discharge pair, and the first discharge pair and the second discharge pair alternately provide indirect wind and direct wind when an indoor load is large.

According to a first aspect, the present disclosure may

broadly provide a method of controlling a indoor unit of an

air conditioner, the indoor unit comprising:

a suction port;

a case having a first discharge port, a second discharge

port, a third discharge port, and a fourth discharge port

being formed around a circumference of the suction port and

D sequentially spaced apart from each other in a vertical

direction;

a first vane being disposed at each of the first discharge

port, the second discharge port, the third discharge port,

and the fourth discharge port, and connected to the case

through a driving link and a first vane link; and

a second vane being disposed at each of the first discharge

port, the second discharge port, the third discharge port,

and the fourth discharge port, and connected to the driving

link by a second vane link, and

the method comprises:

a first dynamic wind step, in which if an indoor load of an

indoor space, in which the ceiling type indoor unit is

installed, is greater than a set load, the first vane and

the second vane, being disposed at each of the first

discharge port and the third discharge port, is disposed in a first position, and the first and the second vane, being disposed at each of the second discharge port and the fourth discharge port, is disposed in a second position; and a second dynamic wind step, in which if the indoor load is greater than the set load, the first vane and the second vane, being disposed at each of the first discharge port and the third discharge port, are disposed in the second position, and the first vane and the second vane, being disposed at each of the second discharge port and the fourth

J discharge port, are disposed in the first position, and

wherein when the first vane and the second vane are in the

first position, a rear end of the first vane is positioned

higher than a front end of the second vane,

wherein the distance between the front end of the second

vane and the rear end of the first vane in the second

position is formed wider than the distance between the front

end of the second vane and the rear end of the first vane in

the first position.

According to another aspect, the present disclosure

may broadly provide a method of controlling a ceiling type

indoor unit of an air conditioner, the ceiling type indoor

unit including:

a case installed at a ceiling of a room so as to be

suspended therefrom, the case having a suction port formed at the lower surface thereof, a first discharge port, a second discharge port, a third discharge port, and a fourth discharge port being formed at the edge of the suction port; and a first vane module disposed at the first discharge port, the first vane module being disposed in a 12 o'clock direction based on the suction port, the first vane module constituting one of a first discharge pair, the first vane module being configured to discharge air in a first

J discharge direction; a second vane module disposed at the

second discharge port, the second vane module being disposed

in a 3 o'clock direction based on the suction port, the

second vane module constituting one of a second discharge

pair, the second vane module being configured to discharge

air in a second discharge direction; a third vane module

disposed at the third discharge port, the third vane module

being disposed in a 6 o' clock direction based on the

suction port, the third vane module constituting the other

of the first discharge pair, the third vane module being

configured to discharge air in a third discharge direction;

and a fourth vane module disposed at the fourth discharge

port, the fourth vane module being disposed in a 9 o'clock

direction based on the suction port, the fourth vane module

constituting the other of the second discharge pair, the

fourth vane module being configured to discharge air in a fourth discharge direction, wherein each vane module includes: a module body installed at the case, at least a portion of the module body being exposed to the discharge port; a vane motor assembled to the module body, the vane motor being configured to provide driving force; a driving link assembled to the module body so as to be rotatable relative thereto, the driving link being coupled to the vane motor, the driving link being configured to be rotated by the driving force of the vane

J motor, the driving link including a first driving link body

and a second driving link body having a predetermined angle

therebetween; a first vane link located further forwards

than the driving link, the first vane link being assembled

to the module body so as to be rotatable relative thereto; a

second vane link assembled to the second driving link body

so as to be rotatable relative thereto; a first vane

disposed at each discharge port, the first vane being

disposed forwards in a discharge direction of air discharged

from the discharge port, the first vane being assembled to

each of the first driving link body and the first vane link

so as to be rotatable relative thereto; and a second vane

disposed at each discharge port, the second vane being

assembled to the module body so as to be rotatable relative

thereto by the second vane shaft, the second vane being

assembled to the second vane link so as to be rotatable relative thereto, the first vane module, the second vane module, the third vane module, and the fourth vane module are set to be operated in one of discharge steps P1 to P6, based on a horizon, the inclination of the first vane satisfies "0 degrees < inclination of the first vane in discharge step P1 < inclination of the first vane in discharge step P2 < inclination of the first vane in discharge step P3 < inclination of the first vane in

] discharge step P4 < inclination of the first vane in

discharge step P5 < inclination of the first vane in

discharge step P6 < 90 degrees,"

based on the horizon, the inclination of the second

vane satisfies "0 degrees < inclination of the second vane

in discharge step P1 < inclination of the second vane in

discharge step P2 < inclination of the second vane in

discharge step P3 < inclination of the second vane in

discharge step P4 < inclination of the second vane in

discharge step P5 < inclination of the second vane in

discharge step P6 < 90 degrees,"

in each discharge step, the inclination of the second

vane is set to always be greater than the inclination of the

first vane,

the method includes: a step (S12) of turning on a

rapid indirect wind mode; a load determination step (S15) of comparing an indoor load with a cooling setting load after step S12; a first dynamic cooling step (S40) of operating the first discharge pair in discharge step P2 and operating the second discharge pair in a power cooling discharge step in the case in which the indoor load is larger than cooling setting load in the load determination step (S15); a step

(S50) of determining whether the first dynamic cooling step

(S40) exceeds a first dynamic time; a second dynamic cooling

step (S80) of operating the first discharge pair in the

J power cooling discharge step and operating the second

discharge pair in discharge step P2 in the case in which

step S50 is satisfied; a step (S90) of determining whether

the second dynamic cooling step (S80) exceeds a second

dynamic time; a step (S120) of determining whether the rapid

indirect wind mode is turned off in the case in which step

S90 is satisfied; and a step of finishing the rapid indirect

wind mode in the case in which step S120 is satisfied, the

method includes: an indirect wind provision step (S200) of

operating the first discharge pair and the second discharge

pair in discharge step P2 in a case in which the indoor load

is smaller than the cooling setting load in the load

determination step (S15); and a step (S210) of determining

an indirect wind operation time after the indirect wind

provision step (S200), and step S120 is performed in the

case in which step S210 is satisfied.

Returning to the load determination step (S15) may be

performed in the case in which step S120 is not satisfied.

Returning to the first dynamic cooling step (S40) may

be performed in the case in which step S50 is not satisfied,

and returning to the second dynamic cooling step (S80) may

be performed in the case in which step S90 is not satisfied.

The first dynamic time and the second dynamic time may

be set to be equal to each other.

In the load determination step (S15), the indoor load

D may be a temperature difference between a target temperature

and an indoor temperature, and the cooling setting load may

be set to 3 degrees.

The method may further include: between step S50 and

the second dynamic cooling step (S80), a first auto swing

step (S60) of simultaneously operating the first discharge

pair and the second discharge pair and reciprocating the

first discharge pair and the second discharge pair within a

predetermined section in the case in which step S50 is

satisfied; and a step (S70) of determining whether the first

auto swing step (S60) exceeds a first auto time, wherein the

second dynamic cooling step (S80) may be performed in the

case in which step S70 is satisfied.

The method may further include: between step S90 and

step S120, a second auto swing step (SlO) of simultaneously

operating the first discharge pair and the second discharge pair and reciprocating the first discharge pair and the second discharge pair within a predetermined section in the case in which step S90 is satisfied; and a step (S110) of determining whether the second auto swing step (SlO) exceeds a second auto time, wherein step S120 may be performed in the case in which step S110 is satisfied.

In discharge step P2, the first vane may have an

inclination of 16 to 29 degrees and the second vane may have

an inclination of 57 to 67 degrees, and in the power cooling

] discharge step, the first vane may have an inclination of 35

to 44 degrees and the second vane may have an inclination of

about 70 to 72 degrees.

In discharge step P1, the rear end of the second vane

may be located higher than the discharge port, the front end

of the second vane may be located lower than the discharge

port, the rear end of the first vane may be located lower

than the front end of the second vane, and the front end of

the first vane may be located lower than the rear end of the

first vane .

When providing discharge step P2, the rear end of the

first vane may be located higher than the front end of the

second vane.

In discharge step P1, the upper surface of the second

vane may be located higher than the upper surface of the

first vane.

The present disclosure provides a method of

controlling a ceiling type indoor unit of an air

conditioner, the ceiling type indoor unit including:

a case installed at a ceiling of a room so as to be

suspended therefrom, the case having a suction port formed

at the lower surface thereof, a first discharge port, a

second discharge port, a third discharge port, and a fourth

discharge port being formed at the edge of the suction port;

and

D a first vane module disposed at the first discharge

port, the first vane module being disposed in a 12 o'clock

direction based on the suction port, the first vane module

constituting one of a first discharge pair, the first vane

module being configured to discharge air in a first

discharge direction; a second vane module disposed at the

second discharge port, the second vane module being disposed

in a 3 o'clock direction based on the suction port, the

second vane module constituting one of a second discharge

pair, the second vane module being configured to discharge

air in a second discharge direction; a third vane module

disposed at the third discharge port, the third vane module

being disposed in a 6 o' clock direction based on the

suction port, the third vane module constituting the other

of the first discharge pair, the third vane module being

configured to discharge air in a third discharge direction; and a fourth vane module disposed at the fourth discharge port, the fourth vane module being disposed in a 9 o'clock direction based on the suction port, the fourth vane module constituting the other of the second discharge pair, the fourth vane module being configured to discharge air in a fourth discharge direction, wherein each vane module includes: a module body installed at the case, at least a portion of the module body being exposed to the discharge port; a vane motor assembled to the

J module body, the vane motor being configured to provide

driving force; a driving link assembled to the module body

so as to be rotatable relative thereto, the driving link

being coupled to the vane motor, the driving link being

configured to be rotated by the driving force of the vane

motor, the driving link including a first driving link body

and a second driving link body having a predetermined angle

therebetween; a first vane link located further forwards

than the driving link, the first vane link being assembled

to the module body so as to be rotatable relative thereto; a

second vane link assembled to the second driving link body

so as to be rotatable relative thereto; a first vane

disposed at each discharge port, the first vane being

disposed forwards in a discharge direction of air discharged

from the discharge port, the first vane being assembled to

each of the first driving link body and the first vane link so as to be rotatable relative thereto; and a second vane disposed at each discharge port, the second vane being assembled to the module body so as to be rotatable relative thereto by the second vane shaft, the second vane being assembled to the second vane link so as to be rotatable relative thereto, the first vane module, the second vane module, the third vane module, and the fourth vane module are set to be operated in one of discharge steps P1 to P6,

D based on a horizon, the inclination of the first vane

satisfies "0 degrees < inclination of the first vane in

discharge step P1 < inclination of the first vane in

discharge step P2 < inclination of the first vane in

discharge step P3 < inclination of the first vane in

discharge step P4 < inclination of the first vane in

discharge step P5 < inclination of the first vane in

discharge step P6 < 90 degrees,"

based on the horizon, the inclination of the second

vane satisfies "0 degrees < inclination of the second vane

in discharge step P1 < inclination of the second vane in

discharge step P2 < inclination of the second vane in

discharge step P3 < inclination of the second vane in

discharge step P4 < inclination of the second vane in

discharge step P5 < inclination of the second vane in

discharge step P6 < 90 degrees," in each discharge step, the inclination of the second vane is set to always be greater than the inclination of the first vane, the method includes: a step (S12) of turning on a rapid indirect wind mode; a load determination step (S13) of comparing an indoor load with a heating setting load after step S12; a first dynamic heating step (S43) of operating the first discharge pair in discharge step P2 and operating the second discharge pair in a power heating discharge step

J in the case in which the indoor load is larger than heating

setting load in the load determination step (S13); a step

(S50) of determining whether the first dynamic heating step

(S43) exceeds a first dynamic time; a second dynamic heating

step (S83) of operating the first discharge pair in the

power heating discharge step and operating the second

discharge pair in discharge step P2 in the case in which

step S50 is satisfied; a step (S90) of determining whether

the second dynamic heating step (S83) exceeds a second

dynamic time; a step (S120) of determining whether the rapid

indirect wind mode is turned off in the case in which step

S90 is satisfied; and a step of finishing the rapid indirect

wind mode in the case in which step S120 is satisfied, the

method includes: an indirect wind provision step (S200) of

operating the first discharge pair and the second discharge

pair in discharge step P2 in the case in which the indoor load is smaller than the heating setting load in the load determination step (S13); and a step (S210) of determining an indirect wind operation time after the indirect wind provision step (S210), and step S120 is performed in a case in which step S210 is satisfied.

Returning to the load determination step (S13) may be

performed in the case in which step S120 is not satisfied.

Returning to the first dynamic cooling step (S43) may

be performed in the case in which step S50 is not satisfied,

D and returning to the second dynamic cooling step (S83) may

be performed in the case in which step S90 is not satisfied.

In the load determination step (S13), the indoor load

may be a temperature difference between a target temperature

and an indoor temperature, and the heating setting load may

be set to 3 degrees.

The method may further include: between step S50 and

the second dynamic cooling step (S83), a horizontal wind

unity step (S63) of operating the first discharge pair and

the second discharge pair in discharge step P2 in the case

in which step S50 is satisfied; and a step (S73) of

determining whether the horizontal wind unity step (S63)

exceeds a horizontal wind time, wherein the second dynamic

cooling step (S83) may be performed in the case in which

step S73 is satisfied.

In discharge step P2, the first vane may have an inclination of 16 to 29 degrees and the second vane may have an inclination of 57 to 67 degrees, and in the power cooling discharge step ,the first vane may have an inclination of 35 to 44 degrees and the second vane may have an inclination of about 70 to 72 degrees.

When providing discharge step P1, the rear end of the

second vane may be located higher than the discharge port,

the front end of the second vane may be located lower than

the discharge port, the rear end of the first vane may be

D located lower than the front end of the second vane, and the

front end of the first vane may be located lower than the

rear end of the first vane.

When providing discharge step P2, the rear end of the

first vane may be located higher than the front end of the

second vane.

In discharge step P1, the upper surface of the second

vane may be located higher than the upper surface of the

first vane.

The method of controlling the ceiling type indoor unit

according to the present disclosure may have one or more of

the following effects.

First, the present disclosure is capable of

determining an indoor load, providing a dynamic cooling

step or a dynamic heating step such that an indoor temperature converges upon a target temperature when the indoor load is large, and providing indirect wind to improve satisfaction of a person in a room when the indoor load is small.

Second, in the present disclosure, opposite two of

four vane modules constitute a first discharge pair, the

other two constitute a second discharge pair, and the first

discharge pair and the second discharge pair discharge air

at different angles and in different directions to rapidly

J solve an indoor load when the indoor load is large.

Third, in the present disclosure, the first discharge

pair and the second discharge pair alternately provide

indirect wind and direct wind to rapidly solve an indoor

load when the indoor load is large, and the first discharge

pair and the second discharge pair provide indirect wind to

reduce discomfort of a person in a room when the indoor load

is small.

Fourth, in the present disclosure, the first

discharge pair and the second discharge pair discharge air

in different directions, whereby it is possible to minimize

a dead zone that discharged air does not reach.

Fifth, in the present disclosure, one of the first

discharge pair and the second discharge pair provides

indirect wind and the other provides direct wind, whereby it

is possible to simultaneously supply discharged air over a long distance and a short distance based on the indoor unit.

The term "comprising" as used in the specification and

claims means "consisting at least in part of." When

interpreting each statement in this specification that

includes the term "comprising," features other than that or

those prefaced by the term may also be present. Related

terms "comprise" and "comprises" are to be interpreted in

the same manner.

The reference in this specification to any prior

J publication (or information derived from it), or to any

matter which is known, is not, and should not be taken as,

an acknowledgement or admission or any form of suggestion

that that prior publication (or information derived from it)

or known matter forms part of the common general knowledge

in the field of endeavour to which this specification

relates.

[Brief Description of the Drawings]

FIG. 1 is a perspective view showing an indoor unit

of an air conditioner according to an embodiment of the

present disclosure.

FIG. 2 is a sectional view of FIG. 1.

FIG. 3 is an exploded perspective view showing a

front panel of FIG. 1.

FIG. 4 is an exploded perspective view showing the upper part of the front panel of FIG. 1.

FIG. 5 is a perspective view of a vane module shown

in FIG. 3.

FIG. 6 is a perspective view of FIG. 5 when viewed in

another direction.

FIG. 7 is a perspective view of the vane module of

FIG. 5 when viewed from above.

FIG. 8 is a front view of the vane module shown in

FIG. 3.

FIG. 9 is a rear view of the vane module shown in

FIG. 3.

FIG. 10 is a plan view of the vane module shown in

FIG. 3.

FIG. 11 is a perspective view showing the operation

structure of the vane module shown in FIG. 5.

FIG. 12 is a front view of a driving link shown in

FIG. 11.

FIG. 13 is a front view of a first vane link shown in

FIG. 11.

FIG. 14 is a front view of a second vane link shown

in FIG. 11.

FIG. 15 is a bottom view of the front panel of FIG. 1

in the state in which a suction grill is separated from

the front panel.

FIG. 16 is a side sectional view of the vane module shown in FIG. 2.

FIG. 17 is an illustrative view of discharge step P1

according to a first embodiment of the present disclosure.

FIG. 18 is an illustrative view of discharge step P2

according to a first embodiment of the present disclosure.

FIG. 19 is an illustrative view of discharge step P3

according to a first embodiment of the present disclosure.

FIG. 20 is an illustrative view of discharge step P4

according to a first embodiment of the present disclosure.

FIG. 21 is an illustrative view of discharge step P5

according to a first embodiment of the present disclosure.

FIG. 22 is an illustrative view of discharge step P6

according to a first embodiment of the present disclosure.

FIG. 23 is a flowchart showing a control method at

the time of cooling according to a first embodiment of the

present disclosure.

FIG. 24 is a flowchart showing a control method at

the time of cooling according to a second embodiment of

the present disclosure.

FIG. 25 is a flowchart showing a control method at

the time of heating according to a third embodiment of the

present disclosure.

FIG. 26 is a flowchart showing a control method at

the time of heating according to a fourth embodiment of

the present disclosure.

[Detailed Description]

Advantages and features of the present disclosure and

a method of achieving the same will be more clearly

understood from embodiments described below with reference

to the accompanying drawings. However, the present

disclosure is not limited to the following embodiments and

may be implemented in various different forms. The

embodiments are provided merely to complete the present

J disclosure and to fully provide a person having ordinary

skill in the art to which the present disclosure pertains

with the category of the present disclosure. The present

disclosure is defined only by the category of the claims.

Wherever possible, the same reference numerals will be used

throughout the specification to refer to the same or like

elements.

Hereinafter, the present disclosure will be described

in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an indoor unit

of an air conditioner according to an embodiment of the

present disclosure. FIG. 2 is a sectional view of FIG. 1.

FIG. 3 is an exploded perspective view showing a front

panel of FIG. 1. FIG. 4 is an exploded perspective view

showing the upper part of the front panel of FIG. 1. FIG.

5 is a perspective view of a vane module shown in FIG. 3.

FIG. 6 is a perspective view of FIG. 5 when viewed in

another direction. FIG. 7 is a perspective view of the

vane module of FIG. 5 when viewed from above. FIG. 8 is a

front view of the vane module shown in FIG. 3. FIG. 9 is a

rear view of the vane module shown in FIG. 3. FIG. 10 is a

plan view of the vane module shown in FIG. 3. FIG. 11 is a

perspective view showing the operation structure of the

vane module shown in FIG. 5. FIG. 12 is a front view of a

driving link shown in FIG. 11. FIG. 13 is a front view of

D a first vane link shown in FIG. 11. FIG. 14 is a front

view of a second vane link shown in FIG. 11. FIG. 15 is a

bottom view of the front panel of FIG. 1 in the state in

which a suction grill is separated from the front panel.

FIG. 16 is a side sectional view of the vane module shown

in FIG. 2. FIG. 17 is an illustrative view of discharge

step P1 according to a first embodiment of the present

disclosure. FIG. 18 is an illustrative view of discharge

step P2 according to a first embodiment of the present

disclosure. FIG. 19 is an illustrative view of discharge

step P3 according to a first embodiment of the present

disclosure. FIG. 20 is an illustrative view of discharge

step P4 according to a first embodiment of the present

disclosure. FIG. 21 is an illustrative view of discharge

step P5 according to a first embodiment of the present

disclosure. FIG. 22 is an illustrative view of discharge step P6 according to a first embodiment of the present disclosure. FIG. 23 is a flowchart showing a control method at the time of cooling according to a first embodiment of the present disclosure.

The indoor unit of the air conditioner according to

this embodiment includes a case 100 having a suction port

101 and a discharge port 102, an indoor heat exchanger 130

disposed in the case 100, and an indoor blowing fan 140

D disposed in the case 100 to blow air to the suction port

101 and the discharge port 102.

In this embodiment, the case 100 includes a case

housing 110 and a front panel 300. The case housing 110 is

installed at the ceiling of a room via a hanger (not shown)

so as to be suspended therefrom, and the lower side of the

case housing is open. The front panel 300 covers the open

surface of the case housing 110, is disposed so as to face

the floor of the room, is exposed in the room, and has the

suction port 101 and the discharge port 102.

The case 100 may be variously realized depending on

the form of manufacture, and construction of the case 100

does not limit the idea of the present disclosure.

The suction port 101 is disposed in the center of the

front panel 300, and the discharge port 102 is disposed outside the suction port 101. The number of suction ports

101 or the number of discharge ports 102 is irrelevant to

idea of the present disclosure. In this embodiment, a

single suction port 101 is formed, and a plurality of

discharge ports 102 is disposed.

In this embodiment, the suction port 101 is formed so

as to have a quadrangular shape when viewed from below, and

four discharge ports 102 are disposed so as to be spaced

apart from edges of the suction port 101 by a predetermined

D distance.

The indoor heat exchanger 130 is disposed between the

suction port 101 and the discharge port 102, and the indoor

heat exchanger 130 partitions the interior of the case 100

into an inner interior and an outer interior. In this

embodiment, the indoor heat exchanger 130 is disposed

vertically.

The indoor blowing fan 140 is located inside the

indoor heat exchanger 130.

When viewed in a top view or a bottom view, the indoor

heat exchanger has an overall shape of "EL", a portion of

which may be separated.

The indoor heat exchanger 130 is disposed such that

air discharged from the indoor blowing fan 140

perpendicularly enters the indoor heat exchanger.

A drain pan 132 is installed in the case 100, and the

indoor heat exchanger 130 is held by the drain pan 132.

Condensate water generated in the indoor heat exchanger 130

may flow to the drain pan 132 and then be stored. A drain

pump (not shown) configured to discharge collected

condensate water to the outside is disposed in the drain pan

132.

The drain pan 132 may be provided with an inclined

surface having directivity in order to collect and store

D condensate water falling from the indoor heat exchanger 130

in one side.

The indoor blowing fan 140 is located in the case

100, and is disposed at the upper side of the suction port

101. A centrifugal blower configured to suction air to the

center thereof and discharging the air in the

circumferential direction is used as the indoor blowing

fan 140.

The indoor blowing fan 140 includes a bell mouth 142,

a fan 144, and a fan motor 146.

The bell mouth 142 is disposed at the upper side of a

suction grill 320, and is located at the lower side of the

fan 144. The bell mouth 142 guides air that has passed

through the suction grill 320 to the fan 144.

The fan motor 146 rotates the fan 144. The fan motor

146 is fixed to the case housing 110. The fan motor 146 is

disposed at the upper side of the fan 144. At least a

portion of the fan motor 146 is located higher than the

fan 144.

A motor shaft of the fan motor 146 is disposed so as

to face downwards, and the fan 144 is coupled to the motor

shaft.

The indoor heat exchanger 130 is located outside the

edge of the fan 144. The fan 144 and at least a portion of

J the indoor heat exchanger 130 are disposed on the same

horizontal line. At least a portion of the bell mouth 142

is inserted into the fan 144. In the upward-downward

direction, at least a portion of the bell mouth 142

overlaps the fan 144.

The indoor heat exchanger 130 is disposed in the case

hosing 110, and partitions the space in the case housing 110

into an inner space and an outer space.

The inner space surrounded by the indoor heat

exchanger 130 is defined as a suction channel 103, and the

outer space outside the indoor heat exchanger 130 is defined

as a discharge channel 104.

The indoor blowing fan 140 is disposed in the suction

channel 103. The discharge channel 104 is located between

the outside of the indoor heat exchanger 130 and the sidewall of the case housing 110.

When viewed in a top view or a bottom view, the

suction channel 103 is an inside surrounded by "EL" of the

indoor heat exchanger, and the discharge channel 104 is an

outside of "EL" of the indoor heat exchanger.

The suction channel 103 communicates with the suction

port 101, and the discharge channel 104 communicates with

the discharge port 103.

Air flows from the lower side to the upper side of the

J suction channel 103, and flows from the upper side to the

lower side of the discharge channel 104. The flow direction

of air is changed 180 degrees based on the indoor heat

exchanger 130.

The suction port 101 and the discharge port 102 are

formed in the same surface of the front panel 300.

The suction port 101 and the discharge port 102 are

disposed so as to face in the same direction. In this

embodiment, the suction port 101 and the discharge port 102

are disposed so as to face the floor of the room.

In the case in which the front panel 300 is bent, the

discharge port 102 may be formed so as to have a slight side

inclination; however, the discharge port 102 connected to

the discharge channel 104 is formed so as to face downwards.

A vane module 200 is disposed to control the direction

of air that is discharged through the discharge port 102.

The front panel 300 includes a front body 310 coupled

to the case housing 110, the front body having the suction

port 101 and the discharge port 102, a suction grill 320

having a plurality of grill holes 321, the suction grill

being configured to cover the suction port 101, a pre-filter

330 separably assembled to the suction grill 320, and a vane

module 200 installed at the front body 310, the vane module

being configured to control the air flow direction of the

J discharge port 102.

The suction grill 320 is installed so as to be

separable from the front body 310. The suction grill 320

may be elevated from the front body 310 in the upward

downward direction. The suction grill 320 covers the

entirety of the suction port 101.

In this embodiment, the suction grill 320 has a

plurality of grill holes 321 formed in the shape of a

lattice. The grill holes 321 communicate with the suction

port 101.

The pre-filter 330 is disposed at the upper side of

the suction grill 320. The pre-filter 330 filters air

suctioned into the case 100. The pre-filter 330 is located

at the upper side of grill holes 321, and filters air that

has passed through the suction grill 320.

The discharge port 102 is formed along the edge of the suction port 101 in the form of a long slit. The vane module 200 is located on the discharge port 102, and is coupled to the front body 310.

In this embodiment, the vane module 200 may be

separated downwards from the front body 310. That is, the

vane module 200 may be disposed irrespective of the coupling

structure of the front body 310, and may be separated

independently from the front body 310. The structure

thereof will be described in more detail.

J <Construction of front body>

The front body 310 is coupled to the lower side of the

case housing 110, and is disposed so as to face the room.

The front body 310 is installed at the ceiling of the room,

and is exposed in the room.

The front body 310 is coupled to the case housing 110,

and the case housing 110 supports load of the front body

310. The front body 310 supports load of the suction grill

320 and the pre-filter 330.

When viewed in a top view, the front body 310 is

formed so as to have a quadrangular shape. The shape of the

front body 310 may be varied.

The upper surface of the front body 310 may be formed

horizontally so as to be in tight contact with the ceiling,

and the edge of the lower surface of the front body may be

slightly curved.

A suction port 101 is disposed in the center of the

front body 310, and a plurality of discharge ports 102 is

disposed outside the edge of the suction port 101.

When viewed in a top view, the suction port 101 may be

formed in a square shape, and each discharge port 102 may be

formed in a rectangular shape. The discharge port 102 may

be formed in a slit shape having a greater length than the

width thereof.

The front body 310 includes a front frame 312, a side

D cover 314, and a corner cover 316.

The front frame 312 provides load and stiffness of the

front panel 300, and is fixed to the case housing 110 by

fastening. The suction port 101 and the four discharge

ports 102 are formed in the front frame 312.

In this embodiment, the front frame 312 includes a

side frame 311 and a corner frame 313.

The corner frame 313 is disposed at each corner of the

front panel 300. The side frame 311 is coupled to two

corner frames 313. The side frame 311 includes an inner

side frame 311a and an outer side frame 311b.

The inner side frame 311a is disposed between the

suction port 101 and the discharge port 102, and couples two

corner frames 313 to each other. The outer side frame 311b

is disposed outside the discharge port 102.

In this embodiment, four inner side frames 311a and four outer side frames 311b are provided.

The suction port 101 is located inside the four inner

side frames 311a. The discharge port 102 is formed so as to

be surrounded by two corner frames 313, the inner side frame

311a, and the outer side frame 311b.

The side cover 314 and the corner cover 316 are

coupled to the lower surface of the front frame 312. The

side cover 314 and the corner cover 316 are exposed to a

user, and the front frame 312 is not visible to the user.

J The side cover 314 is disposed at the edge of the

front frame 312, and the corner cover 316 is disposed at the

corner of the front frame 312.

The side cover 314 is made of a synthetic resin

material, and is fixed to the front frame 312 by fastening.

Specifically, the side cover 314 is coupled to the side

frame 311, and the corner cover 316 is coupled to the corner

frame 313.

In this embodiment, four side covers 314 and four

corner covers 316 are provided. The side covers 314 and the

corner covers 316 are coupled to the front frame 312 to form

a single structure. The four side covers 314 and the four

corner covers 316 form a single edge of the front panel 300.

The side cover 314 is disposed at the lower side of

the side frame 311, and the corner cover 316 is disposed at

the lower side of the corner frame 313.

The four side covers 314 and the four corner covers

316 are assembled to form a quadrangular frame. The four

side covers 314 and the four corner covers 316 connected to

each other are defined as a front decoration 350.

The front decoration 350 has a decoration outer border

351 and a decoration inner border 352.

When viewed in a top view or a bottom view, the

decoration outer border 351 is formed in a quadrangular

shape, and the decoration inner border 352 is generally

] formed in a quadrangular shape. However, the corner of the

decoration inner border has predetermined curvature.

The suction grill 320 and four vane modules 200 are

disposed inside the decoration inner border 352. The

suction grill 320 and four vane modules 200 abut the

decoration inner border 352.

In this embodiment, four side cover 314 are disposed,

and each side cover 314 is coupled to the front frame 312.

The outer edge of the side cover 314 defines a portion of

the decoration outer border 351, and the inner edge of the

side cover 314 defines a portion of the decoration inner

border 352.

In particular, the inner edge of the side cover 314

defines the outer border of the discharge port 102. The

inner edge of the side cover 314 is defined as a side

decoration inner border 315.

In this embodiment, four corner covers 316 are

disposed, and each corner cover 316 is coupled to the front

frame 312. The outer edge of the corner cover 316 defines a

portion of the decoration outer border 351, and the inner

edge of the corner cover 316 defines a portion of the

decoration inner border 352.

The inner edge of the corner cover 316 is defined as a

corner decoration inner border 317.

The corner decoration inner border 317 may be disposed

D so as to contact the suction grill 320. In this embodiment,

the inner edge of the corner cover 316 is disposed so as to

face the suction grill 320, and is spaced apart therefrom by

a predetermined distance to form a gap 317a.

The side decoration inner border 315 is also spaced

apart from the vane module 200 to form a gap 315a, and is

disposed so as to face the outer edge of the vane module

200.

Consequently, the decoration inner border 352 is

spaced apart from the outer edges of the four vane modules

200 and the suction grill 320 to form a continuous gap.

A continuous gap defined by four side decoration inner

border gaps 315a and four corner decoration inner border

gaps 317a is defined as a front decoration gap 350a.

The front decoration gap 350a is formed at the inner

edge of the front decoration 350. Specifically, the front decoration gap 350a is formed as the result of the outer edges of the vane module 200 and the suction grill 320 and the inner edge of the front decoration 350 being spaced apart from each other.

When the vane module 200 is not operated (when the

indoor unit is stopped), the front decoration gap 350a

allows the suction grill 320 and the vane module 200 to be

seen as a single structure.

J The suction grill 320 is located at the lower side of

the front body 310. The suction grill 320 may be moved

downwards in the state of being in tight contact with the

lower surface of the front body 310.

The suction grill 320 includes a grill body 322 and a

plurality of grill holes 321 formed through the grill body

322 in the upward-downward direction.

The suction grill 320 includes a grill body 322

disposed at the lower side of the suction port 101, the

grill body communicating with the suction port 101 through a

plurality of grill holes 321, the grill body being formed in

a quadrangular shape, and a grill corner portion 327 formed

at the corners of the grill body 322 so as to extend in the

diagonal direction.

The lower surface of the grill body 322 and the lower

surface of a first vane 210 may define a continuous surface.

In addition, the lower surface of the grill body 322 and the

lower surface of the corner cover 316 may define a

continuous surface.

A plurality of grills 323 is disposed inside the grill

body 322 in the shape of a lattice. The lattice-shaped

grills 323 define quadrangular grill holes 321. The portion

at which the grills 323 and the grill holes 321 are formed

is defined as a suction portion.

The grill body 322 includes a suction portion

D configured to communicate with air and a grill body portion

324 disposed so as to surround the suction portion. When

viewed in a top view or a bottom view, the suction portion

is generally formed in a quadrangular shape.

Each corner of the suction portion is disposed so as

to face a corresponding corner of the front panel 300, and

more specifically is disposed so as to face the corner cover

316.

When viewed in a bottom view, the grill body 322 is

formed in a quadrangular shape.

The outer edge of the grill body portion 324 is

disposed so as to face the discharge port 102 or the front

decoration 350.

The outer edge of the grill body portion 324 includes

a grill corner border 326 disposed so as to face the corner

cover 316 and a grill side border 325 defining the discharge port 102, the grill side border being disposed so as to face the side cover 314.

The grill corner border 326 may have curvature formed

about the inside of the suction grill 320, and the grill

side border 325 may have curvature formed about the outside

of the suction grill 320,

The grill body portion 324 further includes a grill

corner portion 327 surrounded by the grill corner border 326

and two grill side borders 325. The grill corner portion

J 327 is formed at the grill body portion 324 so as to

protrude toward the corner cover 316.

The grill corner portion 327 is disposed at each

corner of the grill body 322. The grill corner portion 327

extends toward each corner of the front panel 300.

In this embodiment, four grill corner portions 327 are

disposed. For convenience of description, the four grill

corner portions 327 are defined as a first grill corner

portion 327-1, a second grill corner portion 327-2, a third

grill corner portion 327-3, and a fourth grill corner

portion 327-4.

The grill side border 325 is formed so as to be

concave from the outside to the inside.

The discharge port 102 is formed between the side

cover 314 and the suction grill 320. More specifically, one

discharge port 102 is formed between the side decoration inner border 315 of the side cover 314 and the grill side border 325 of the grill body 322. Discharge ports 102 are formed between side decoration inner borders 315 and grill side borders 325 disposed in four directions of the suction grill 320.

In this embodiment, the length of the grill corner

border 326 is equal to the length of the corner decoration

inner border 317. That is, the width of the corner cover

316 is equal to the width of the grill corner portion 327.

J In addition, the width of the inside of the side cover

314 is equal to the width of the grill side border 325.

The grill side border 325 will be described in more

detail.

The grill side border 325 defines the inner border of

the discharge port 102. The side decoration inner border

315 and the corner decoration inner border 317 define the

outer border of the discharge port 102.

The grill side border 325 includes a long straight

section 325a extending long in the longitudinal direction of

the discharge port 102, the long straight section being

formed in a straight line, a first curved section 325b

connected to one side of the long straight section 325a, the

first curved section having the center of curvature outside

the suction grill 320, a second curved section 325c

connected to the other side of the long straight section

325a, the first curved section having the center of

curvature outside the suction grill 320, a first short

straight section 325d connected to the first curved section,

and a second short straight section 325e connected to the

second curved section 325c.

The vane module 200 is installed in the discharge

channel 104, and controls the flow direction of air that is

discharged through the discharge port 102.

J The vane module 200 includes a module body 400, a

first vane 210, a second vane 220, a vane motor 230, a

driving link 240, a first vane link 250, and a second vane

link 260. The first vane 210, the second vane 220, the vane

motor 230, the driving link 240, the first vane link 250,

and the second vane link 260 are all installed at the module

body 400. The module body 400 is installed integrally at

the front panel 300. That is, all of the components of the

vane module 200 are modularized and are installed at the

front panel 300 at once.

Since the vane module 200 is modularized, it is

possible to reduce assembly time and to achieve easy

replacement at the time of trouble.

In this embodiment, a stepper motor is used as the

vane motor 230.

The module body 400 may be constituted by a single

body. In this embodiment, the module body is manufactured

using two separate parts in order to minimize installation

space and to minimize manufacturing cost.

In this embodiment, the module body 400 includes a

first module body 410 and a second module body 420.

The first module body 410 and the second module body

420 are formed in horizontal symmetry. In this embodiment,

the first module body 410 is described by way of example.

Each of the first module body 410 and the second

module body 420 is fastened to the front body 310.

Specifically, each of the first module body 410 and the

second module body 420 is installed at the corner frame 313.

In the horizontal direction, the first module body 410

is installed at the corner frame 313 disposed at one side of

the discharge port 102, and the second module body 420 is

installed at the corner frame 313 disposed at the other side

of the discharge port 102.

In the vertical direction, each of the first module

body 410 and the second module body 420 is in tight contact

with the lower surface of the corner frame 313, and is

fastened thereto via a fastening member 401.

Consequently, the first module body 410 and the second

module body 420 are disposed at the lower side of the front

body 310. In the state in which the indoor unit is installed, the direction in which the first module body 410 and the corner frame 313 are fastened to each other is disposed so as to be directed from the lower side to the upper side, and the direction in which the second module body 420 and the corner frame 313 are fastened to each other is also disposed so as to be directed from the lower side to the upper side.

In the above structure, the entirety of the vane

module 200 may be easily separated from the front body 310

D during repair.

The vane module 200 includes a first module body 410

disposed at one side of the discharge port 102, the first

module body being located at the lower side of the front

body 310, the first module body being assembled to the front

body 310 so as to be separable downwards therefrom, a second

module body 420 disposed at the other side of the discharge

port 102, the second module body being located at the lower

side of the front body 310, the second module body being

assembled to the front body 310 so as to be separable

downwards therefrom, at least one vane 210 and 220 having

one side and the other side coupled to the first module body

410 and the second module body 420, respectively, the vane

being configured to be rotated relative to the first module

body 410 and the second module body 420, a vane motor 230

installed at at least one of the first module body 410 or the second module body 420, the vane motor being configured to provide driving force to the vane, a first fastening hole

403-1 disposed at the first module body 410, the first

fastening hole being disposed so as to face downwards, the

first fastening hole being formed through the first module

body 410, a first fastening member 401-1 fastened to the

front body 310 through the first fastening hole 403-1, a

second fastening hole 403-2 disposed at the second module

body 420, the second fastening hole being disposed so as to

D face downwards, the second fastening hole being formed

through the second module body 420, and a second fastening

member 401-2 fastened to the front body through the second

fastening hole 403-2.

In particular, since the first module body 410 and the

second module body 420 are located at the lower side of the

front body 310, only the main module 200 may be separated

from the front body 310 in the state in which the front body

310 is installed at the case housing 110. This is commonly

applied to all of the four vane modules 200.

In the case in which the module body 400 is separated

from the front body 310, the entirety of the vane module 200

is separated downwards from the front body 310.

The first module body 410 includes a module body

portion 402 coupled to the front body 310 and a link

installation portion 404 protruding upwards from the module body portion 402.

The module body portion 402 is fastened to the front

body 310 via a fastening member 401 (not shown). Unlike

this embodiment, the module body portion 402 may be coupled

to the front body 310 by hook coupling or interference

fitting.

In this embodiment, the module body portion 402 is

securely fastened to the front body 310 in order to minimize

generation of vibration or noise due to the first vane 210,

D the second vane 220, the vane motor 230, the driving link

240, the first vane link 250, and the second vane link 260.

The fastening member 401 provided to fix the module

body portion 402 is in the state of being fastened from the

lower side to the upper side, and may be separated from the

upper side to the lower side.

A fastening hole 403, through which the fastening

member 401 is inserted, is formed in the module body portion

402.

In the case in which it is necessary to distinguish

between the fastening hole formed in the first module body

410 and the fastening hole formed in the second module body

420 for convenience of description, the fastening hole

formed in the first module body 410 is referred to as a

first fastening hole 403-1, and the fastening hole formed in

the second module body 420 is referred to as a second fastening hole 403-1

. Also, in the case in which it is necessary to

distinguish between the fastening members 401, the fastening

member 401 installed in the first fastening hole 403-1 is

defined as a first fastening member 401-1, and the fastening

member 401 installed in the second fastening hole 403-1 is

defined as a second fastening member 401-2.

The first fastening member 401-1 is fastened to the

front body 310 through the first fastening hole. The second

D fastening member 401-2 is fastened to the front body 310

through the second fastening hole.

Before fixing the module body 400 by fastening, a

module hook 405 configured to temporarily fix the position

of the module body 400 is disposed.

The module hook 405 is coupled to the front panel 300,

specifically the front body 310. Specifically, the module

hook 405 and the front body 310 are caught by each other.

A plurality of module hooks 405 may be disposed at one

module body. In this embodiment, module hooks are disposed

at the outer edge and the front edge of the module body

portion 402. That is, module hooks 405 are disposed outside

the first module body 410 and the second module body 420,

and the module hooks 405 are symmetrical with each other in

the leftward-rightward direction.

The vane module 200 may be temporarily fixed to the frame body 310 by the module hook 405 of the first module body 410 and the module hook 405 of the second module body

420.

In the case of fixing using the module hooks 405, a

slight gap may be generated due to the coupling structure

thereof. The fastening member 401 securely fixes the

temporarily fixed module body 400 to the front body 310.

The fastening hole 403, in which the fastening member

401 is installed, may be located between the module hooks

J 405. The fastening hole 403 of the first module body 410

and the fastening hole 403 of the second module body 420 are

disposed between one module hook 405 and the other module

hook 405.

In this embodiment, the module hooks 405 and the

fastening holes 403 are disposed in a line.

Even when the fastening members 401 are removed, the

state in which the vane module 200 is coupled to the frame

body 310 may be maintained by the module hooks 405.

When it is necessary to separate the vane module at

the time of repair or trouble, the state in which the vane

module 200 is coupled to the frame panel 300 is maintained

even when the fastening member 401 is removed. As a result,

a worker does not need to separately support the vane module

200 at the time of removing the fastening member 401.

Since the vane module 200 is primarily fixed by the module hook 405 and is secondary fixed by the fastening member 401, it is possible to greatly improve work convenience at the time of repair.

The module body portion 402 is disposed horizontally,

and the link installation portion 404 is disposed

vertically. In particular, the link installation portion

404 protrudes upwards from the module body portion 402 in

the state of being installed.

The link installation portion 404 of the first module

J body 410 and the link installation portion 404 of the second

module body 420 are disposed so as to face each other. The

first vane 210, the second vane 220, the driving link 240,

the first vane link 250, and the second vane link 260 are

installed between the link installation portion 404 of the

first module body 410 and the link installation portion 404

of the second module body 420. The vane motor 230 is

disposed outside the link installation portion 404 of the

first module body 410 or the link installation portion 404

of the second module body 420.

The vane motor 230 may be installed at only one of the

first module body 410 and the second module body 420. In

this embodiment, the vane motor 230 may be installed at each

of the first module body 410 and the second module body 420.

The first vane 210, the second vane 220, the driving

link 240, the first vane link 250, and the second vane link

260 are coupled between the first module body 410 and the

second module body 420, whereby the vane module 200 is

integrated.

In order to install the vane motor 230, a vane motor

installation portion 406 protruding outside the link

installation portion 404 is disposed. The vane motor 230 is

fixed to the vane motor installation portion 406 by

fastening. The vane motor installation portion 406 is

formed in the shape of a boss, and the vane motor 230 is

D fixed to the vane motor installation portion 406. By the

provision of the vane motor installation portion 406, the

link installation portion 404 and the vane motor 230 are

spaced apart from each other by a predetermined distance.

A driving link coupling portion 407 to which the

driving link 240 is assembled and which provides the center

of rotation to the driving link 240, a first vane link

coupling portion 408 to which the first vane link 250 is

assembled and which provides the center of rotation to the

first vane link 250, and a second vane coupling portion 409

which is coupled with the second vane 220 and which provides

the center of rotation to the second vane 220 are disposed

at the link installation portion 404.

In this embodiment, each of the driving link coupling

portion 407, the first vane link coupling portion 408, and

the second vane coupling portion 409 is formed in the shape of a hole. Unlike this embodiment, the same may be formed in the shape of a boss, and may be realized as any of various forms that provide a rotary shaft.

Meanwhile, a stopper 270 configured to limit the

rotational angle of the driving link 240 is disposed at the

link installation portion 404. The stopper 270 is disposed

so as to protrude toward the opposite link installation

portion 404.

In this embodiment, the stopper 270 interferes with

J the driving link 240 at a specific position at the time of

rotation thereof, and limits rotation of the driving link

240. The stopper 270 is located within the radius of

rotation of the driving link 240.

In this embodiment, the stopper 270 is manufactured

integrally with the link installation portion 404. In this

embodiment, the stopper 270 defines the installation

position of the driving link 240, remains in contact with

the driving link 240 at the time of rotation thereof, and

inhibits vibration or free movement of the driving link 240.

In this embodiment, the stopper 270 is formed in the

shape of an arc.

The driving link 240 is directly connected to the vane

motor 230. A motor shaft (not shown) of the vane motor 230

is directly coupled to the driving link 240, and the rotation amount of the driving link 240 is determined based on the rotational angle of the rotary shaft of the vane motor 230.

The driving link 240 is assembled to the vane motor

230 through the link installation portion 404. In this

embodiment, the driving link 240 extends through the driving

link coupling portion 407.

The driving link 240 includes a driving link body 245,

a first driving link shaft 241 disposed at the driving link

J body 245, the first driving link shaft being rotatably

coupled to the first vane 210, a core link shaft 243

disposed at the driving link body 245, the core link shaft

being rotatably coupled to the link installation portion 404

(specifically, the driving link coupling portion 407), and a

second driving link shaft 242 disposed at the driving link

body 245, the second driving link shaft being rotatably

coupled to the second vane link 260.

The driving link body 245 includes a first driving

link body 246, a second driving link body 247, and a core

body 248.

The core link shaft 243 is disposed at the core body

248, the first driving link shaft 241 is disposed at the

first driving link body 246, and the core link shaft 243 is

disposed at the second driving link body 247.

The core body 248 connects the first driving link body

246 and the second driving link body 247 to each other. The

shape of each of the first driving link body 246 and the

second driving link body 247 is not particularly restricted.

In this embodiment, however, each of the first driving link

body 246 and the second driving link body 247 is generally

formed in the shape of a straight line.

The first driving link body 246 is longer than the

second driving link body 247.

The core link shaft 243 is rotatably assembled to the

J link installation portion 404. The core link shaft 243 is

assembled to the driving link coupling portion 407 formed at

the link installation portion 404. The core link shaft 243

may be rotated relative to the driving link coupling portion

407 in the state of being coupled thereto.

The first driving link shaft 241 is rotatably

assembled to the first vane 210. The second driving link

shaft 242 is rotatably assembled to the second vane link

260.

The first driving link shaft 241 and the second

driving link shaft 242 protrude in the same direction. The

core link shaft 243 protrudes in the direction opposite the

first driving link shaft 241 and the second driving link

shaft 242.

The first driving link body 246 and the second driving

link body 247 have a predetermined angle therebetween. An imaginary straight line joining the first driving link shaft

241 and the core link shaft 243 to each other and an

imaginary straight line joining the core link shaft 243 and

the second driving link shaft 242 to each other have a

predetermined angle E therebetween. The angle E is greater

than 0 degrees and less than 180 degrees.

The first driving link shaft 241 has a structure in

which the driving link body 245 and the first vane 210 can

be rotated relative thereto. In this embodiment, the first

J driving link shaft 241 is formed integrally with the driving

link body 245. Unlike this embodiment, the first driving

link shaft 241 may be manufactured integrally with the first

vane 210 or the joint rib 214.

The core link shaft 243 has a structure in which the

driving link body 245 and the module body (specifically, the

link installation portion 404) can be rotated relative

thereto. In this embodiment, the core link shaft 243 is

formed integrally with the driving link body 245.

The second driving link shaft 242 has a structure in

which the second vane link 260 and the driving link 240 can

be rotated relative thereto. In this embodiment, the second

driving link shaft 242 is formed integrally with the driving

link body 245. Unlike this embodiment, the second driving

link shaft 242 may be manufactured integrally with the

second vane link 260.

In this embodiment, the second driving link shaft 242

is disposed at the second driving link body 247. The second

driving link shaft 242 is disposed opposite the first

driving link shaft 241 on the basis of the core link shaft

243.

An imaginary straight line joining the first driving

link shaft 241 and the core link shaft 243 to each other and

an imaginary straight line joining the core link shaft 243

and the second driving link shaft 242 to each other have a

] predetermined angle E therebetween. The angle E is greater

than 0 degrees and less than 180 degrees.

In this embodiment, the first vane link 250 is made of

a strong material, and is formed in the shape of a straight

line. Unlike this embodiment, the first vane link 250 may

be curved.

The first vane link 250 includes a first vane link

body 255, a 1-1 vane link shaft 251 disposed at the first

vane link body 255, the 1-1 vane link shaft being assembled

to the first vane 210, the 1-1 vane link shaft being

configured to be rotated relative to the first vane 210, and

a 1-2 vane link shaft 252 disposed at the first vane link

body 255, the 1-2 vane link shaft being assembled to the

module body 400 (specifically, the link installation portion

404), the 1-2 vane link shaft being configured to be rotated relative to the module body 400.

The 1-1 vane link shaft 251 protrudes toward the first

vane 210. The 1-1 vane link shaft 251 may be assembled to

the first vane 210, and may be rotated relative to the first

vane 210.

The 1-2 vane link shaft 252 is assembled to the link

installation portion 404 of the module body 400.

Specifically, the 1-2 vane link shaft 252 may be assembled

to the first vane link coupling portion 408, and may be

D rotated relative to the first vane link coupling portion

408.

In this embodiment, the second vane link 260 is made

of a strong material, and is formed in the shape of a

straight line. Unlike this embodiment, the first vane link

250 may be curved.

The second vane link 260 includes a second vane link

body 265, a 2-1 vane link shaft 261 disposed at the second

vane link body 265, the 2-1 vane link shaft being assembled

to the second vane 220, the 2-1 vane link shaft being

configured to be rotated relative to the second vane 220,

and a 2-2 vane link journal 262 disposed at the second vane

link body 265, the 2-2 vane link journal being assembled to

the driving link 240 (specifically, the second driving link

shaft 242), the 2-2 vane link journal being configured to be rotated relative to the driving link 240.

In this embodiment, the 2-2 vane link journal 262 is

formed in the shape of a hole formed through the second vane

link body 265. Since the 2-2 vane link journal 262 and the

second driving link shaft 242 have relative structures, one

is formed in the shape of a shaft and the other is formed in

the shape of a hole having the center of rotation. Unlike

this embodiment, therefore, the 2-2 vane link journal 262

may be formed in the shape of a shaft, and the second

D driving link shaft may be formed in the shape of a hole.

In all constructions that can be coupled to the

driving link, the first vane link, and the second vane link

so as to be rotated relative thereto, substitution of the

above construction is possible, and therefore a description

of modifiable examples thereof will be omitted.

For description, the direction in which air is

discharged is defined as the front, and the direction

opposite thereto is defined as the rear. In addition, the

ceiling side is defined as the upper side, and the floor is

defined as the lower side.

In this embodiment, the first vane 210 and the second

vane 220 are disposed in order to control the flow direction

of air that is discharged from the discharge port 102. The

relative disposition and relative angle between the first vane 210 and the second vane 220 are changed according to steps of the vane motor 230. In this embodiment, the first vane 210 and the second vane 220 provide six discharge steps

P1, P2, P3, P4, P5, and P6 in pairs according to steps of

the vane motor 230.

The discharge steps P1, P2, P3, P4, P5, and P6 are

defined as states in which the first vane 210 and the second

vane 220 are stationary, rather than moved. In this

embodiment, on the other hand, moving steps may be provided.

D The moving steps result from a combination of the six

discharge steps P1, P2, P3, P4, P5, and P6, and are defined

as the current of air provided by the operation of the first

vane 210 and the second vane 220.

The first vane 210 is disposed between the link

installation portion 404 of the first module body 410 and

the link installation portion 404 of the second module body

420.

When the indoor unit is not operated, the first vane

210 covers most of the discharge port 210. Unlike this

embodiment, the first vane 210 may be manufactured so as to

cover the entirety of the discharge port 210.

The first vane 210 is coupled to the driving link 240

and the first vane link 250.

The driving link 240 and the first vane link 250 are disposed at one side and the other side of the first vane

210, respectively.

The first vane 210 is rotated relative to the driving

link 240 and the first vane link 250.

When it is necessary to distinguish between the

positions of the driving link 240 and the first vane link

250, the driving link 240 coupled to the first module body

410 is defined as a first driving link, and the first vane

link 250 coupled to the first module body 410 is defined as

D a 1-1 vane link. The driving link 240 coupled to the second

module body 420 is defined as a second driving link, and the

first vane link 250 coupled to the second module body 420 is

defined as a 1-2 vane link.

The first vane 210 includes a first vane body 212

formed so as to extend long in the longitudinal direction of

the discharge port 102 and a joint rib 214 protruding

upwards from the first vane body 212, the driving link 240

and the first vane link 250 being coupled to the joint rib.

The first vane body 212 may be formed so as to have a

gently curved surface.

The first vane body 212 controls the direction of air

that is discharged along the discharge channel 104. The

discharged air collides with the upper surface or the lower

surface of the first vane body 212, whereby the flow

direction thereof may be guided.

The flow direction of the discharged air and the

longitudinal direction of the first vane body 212 are

perpendicular to each other or intersect each other.

The joint rib 214 is an installation structure for

coupling between the driving link 240 and the first vane

link 250. The joint rib 214 is disposed at each of one side

and the other side of the first vane 210.

The joint rib 214 is formed so as to protrude upwards

from the upper surface of the first vane body 212. The

J joint rib 214 is formed in the flow direction of discharged

air, and minimizes resistance to the discharged air.

Consequently, the joint rib 214 is perpendicular to or

intersects the longitudinal direction of the first vane body

212.

The joint rib 214 is formed such that the air

discharge side (the front) of the joint rib is low and the

air entrance side (the rear) of the joint rib is high. In

this embodiment, the joint rib 214 is formed such that the

side of the joint rib to which the driving link 240 is

coupled is high and the side of the joint rib to which the

first vane link 250 is coupled is low.

The joint rib 214 has a second joint portion 217

rotatably coupled with the driving link 240 and a first

joint portion 216 rotatably coupled with the first vane link

250.

The joint rib 214 may be manufactured integrally with

the first vane body 212.

In this embodiment, each of the first joint portion

216 and the second joint portion 217 is formed in the shape

of a hole, and is formed through the joint rib 214.

Each of the first joint portion 216 and the second

joint portion 217 is a structure in which axial coupling or

hinge coupling is possible, and may be changed into any of

various forms.

D When viewed from the front, the second joint portion

217 is located higher than the first joint portion 216.

The second joint portion 217 is located further

rearwards than the first joint portion 216. The first

driving link shaft 241 is assembled to the second joint

portion 217. The second joint portion 217 and the first

driving link shaft 241 are assembled so as to be rotatable

relative to each other. In this embodiment, the first

driving link shaft 241 is assembled through the second joint

portion 217.

The 1-1 vane link shaft 251 is assembled to the first

joint portion 216.

The first joint portion 216 and the 1-1 vane link

shaft 251 are assembled so as to be rotatable relative to

each other. In this embodiment, the 1-1 vane link shaft 251

is assembled through the first joint portion 216.

When viewed in a top view, the driving link 250 and

the first vane link 250 are disposed between the joint rib

214 and the link installation portion 404.

In this embodiment, the distance between the first

joint portion 216 and the second joint portion 217 is less

than the distance between the core link shaft 243 and the 1

2 vane link shaft 252.

The second vane 220 includes a second vane body 222

J formed so as to extend long in the longitudinal direction of

the discharge port 102, a joint rib 224 protruding upwards

from the second vane body 222, the joint rib 224 being

coupled to the second vane link 260 so as to be rotatable

relative thereto, and a second vane shaft 221 formed at the

second vane body 222, the second vane shaft being rotatably

coupled to the link installation portion 404.

The joint rib 224 is a structure in which axial

coupling or hinge coupling is possible, and may be changed

into any of various forms. A hole formed in the second

joint rib 224 and coupled to the second vane link 220 so as

to be rotatable relative thereto is defined as a third joint

portion 226.

In this embodiment, the third joint portion 226 is

formed in the shape of a hole, and is formed through the

joint rib 224. The third joint portion 226 is a structure in which axial coupling or hinge coupling is possible, and may be changed into any of various forms.

In the case in which it is necessary to distinguish

between the joint rib 214 of the first vane and the joint

rib 224 of the second vane, the joint rib of the first vane

is defined as a first joint rib 214, and the joint rib of

the second vane is defined as a second joint rib 224.

The second vane 220 may be rotated about the second

joint rib 224, and may also be rotated about the second vane

D shaft 221. That is, the second vane 220 may be rotated

relative to each of the second joint rib 224 and the second

vane shaft 221.

When viewed in a top view, the second joint rib 224 is

located further forwards than the second vane shaft 221.

The second joint rib 224 is moved along a predetermined

orbit about the second vane shaft 221.

The second vane body 222 may be formed so as to be

gently curved.

The second vane body 222 controls the direction of air

that is discharged along the discharge channel 104. The

discharged air collides with the upper surface or the lower

surface of the second vane body 222, whereby the flow

direction thereof is guided.

The flow direction of the discharged air and the

longitudinal direction of the second vane body 222 are perpendicular to each other or intersect each other.

When viewed in a top view, at least a portion of the

second vane body 222 may be located between the first joint

portions 212 of the first vane 210.

This is necessary to prevent interference when the

second vane 220 is located at the upper side of the first

vane 210. The front end of the second vane body 222 is

located between the first joint portions 214. That is, the

front length of the second vane body 222 is less than the

J length between the first joint portions 214.

The second joint rib 224 is an installation structure

for assembly with the second vane link 260. The second

joint rib 224 is disposed at each of one side and the other

side of the second vane body 222.

The second joint rib 224 is coupled to the second vane

link 260 so as to be rotatable relative thereto. In this

embodiment, the third joint portion 226 and the second vane

link 260 are axially coupled to each other so as to be

rotatable relative thereto.

The second joint rib 224 is formed so as to protrude

upwards from the upper surface of the second vane body 222.

The second joint rib 224 is preferably formed in the flow

direction of discharged air. Consequently, the second joint

rib 224 is disposed so as to perpendicular to or intersect

the longitudinal direction of the second vane body 222.

The second vane 220 is rotated about the second vane

shaft 221. The second vane shaft 221 is formed at each of

one side and the other side of the second vane body 222.

One second vane shaft 221 protrudes toward the link

installation portion 404 disposed at one side, and the other

second vane shaft 221 protrudes toward the link installation

portion 404 disposed at the other side.

The second vane coupling portion 411 rotatably coupled

to the second vane shaft 221 is disposed at the module body

D 400. In this embodiment, the second vane coupling portion

411 is formed in the shape of a hole formed through the

module body 400.

The second vane shaft 221 is located further rearwards

than the second joint rib 224. The second vane link 260,

the driving link 240, and the first vane line 250 are

sequentially disposed in front of the second vane shaft 221.

In addition, the driving link coupling portion 407 and

the first vane link coupling portion 408 are sequentially

disposed in front of the second vane coupling portion 411

The coupling structure and the separation structure of

the vane module will be described in more detail with

reference to FIGS. 1 to 4 and 15.

When the suction grill 320 is separated in the state

of FIG. 1, four vane modules 200 are exposed, as shown in

FIG. 15. The suction grill 320 is separably assembled to

the front body 310.

The suction grill 320 may be separated from the front

body 310 using various methods.

The suction grill 320 may be separated using a method

of separating and rotating one edge of the suction grill on

the basis of the other edge of the suction grill. In

another method, the suction grill 320 may be separated from

the front body 310 through release of catching in the state

J of being caught by the front body. In a further method,

coupling between the suction grill 200 and the front body

310 may be maintained by magnetic force.

In this embodiment, the suction grill 320 may be moved

in the upward-downward direction by an elevator 500

installed at the front body 310. The elevator 500 is

connected to the suction grill 320 via a wire (not shown).

The wire may be wound or unwound by operation of the

elevator 500, whereby the suction grill 320 may be moved

downwards or upwards.

A plurality of elevators 500 is disposed, and the

elevators 500 simultaneously move opposite sides of the

suction grill 320.

When the suction grill 320 is moved downwards, the

first module body 410 and the second module body 420, hidden

by the suction grill 320, are exposed.

In the state in which the suction grill 320 is

assembled to the front body 310, at least one of the first

vane 210 or the second vane 220 of the vane module 200 may

be exposed.

When the indoor unit is not operated, only the first

vane 210 is exposed to the user. When the indoor unit is

operated and air is discharged, the second vane 220 may be

selectively exposed to the user.

In the state in which the suction grill 320 is

D assembled to the front body 310, the first module body 410

and the second module body 420 of the vane module 200 are

hidden by the suction grill 320.

Since the fastening holes 403 are disposed at the

first module body 410 and the second module body 420, the

fastening holes 403 are hidden by the suction grill 320 so

as not to be visible to the user.

Since the first module body 410 and the second module

body 420 are located at the upper side of the grill corner

portion 327 constituting the suction grill 320, the grill

corner portion 327 prevents the first module body 410 and

the second module body 420 from being exposed outside.

The grill corner portion 327 also prevents the

fastening holes 403 formed in the first module body 410 and

the second module body 420 from being exposed outside.

Since the grill corner portion 327 is located at the lower side of the fastening holes 403, the fastening holes 403 are hidden by the grill corner portion 327.

More specifically, the suction grill 320 includes a

grill body 322 disposed at the lower side of the suction

port 101, the grill body communicating with the suction port

101 through a plurality of grill holes 321, the grill body

being formed in a quadrangular shape, and a first grill

corner portion 327-1, a second grill corner portion 327-2, a

third grill corner portion 327-3, and a fourth grill corner

J portion 327-4 formed at the corners of the grill body 322 so

as to extend in the diagonal direction.

The vane module 200 includes a first vane module 201

disposed outside one edge of the suction grill 320, the

first vane module being disposed between the first grill

corner portion 327-1 and the second grill corner portion

327-2, a second vane module 202 disposed outside one edge of

the suction grill 320, the second vane module being disposed

between the second grill corner portion 327-2 and the third

grill corner portion 327-3, a third vane module 203 disposed

outside one edge of the suction grill 320, the third vane

module being disposed between the third grill corner portion

327-3 and the fourth grill corner portion 327-4, and a

fourth vane module 204 disposed outside one edge of the

suction grill 320, the fourth vane module being disposed

between the fourth grill corner portion 327-4 and the first grill corner portion 327-1.

The first module body 410 and the second module body

420 disposed between the first vane module 201 and the

second vane module 202 are located at the upper side of the

first grill corner portion 327-1, and are hidden by the

first grill corner portion 327-1. Specifically, the second

module body of the first vane module and the first module

body of the second vane module are disposed at the upper

side of the first grill corner portion.

J The first module body and the second module body

disposed between the second vane module 202 and the third

vane module 203 are located at the upper side of the second

grill corner portion 327-2, and are hidden by the second

grill corner portion 327-2. Specifically, the second module

body of the second vane module and the first module body of

the third vane module are disposed at the upper side of the

second grill corner portion.

The first module body and the second module body

disposed between the third vane module 203 and the fourth

vane module 204 are located at the upper side of the third

grill corner portion 327-3, and are hidden by the third

grill corner portion 327-3. Specifically, the second module

body of the third vane module and the first module body of

the fourth vane module are disposed at the upper side of the

third grill corner portion.

The first module body and the second module body

disposed between the fourth vane module 204 and the first

vane module 201 are located at the upper side of the fourth

grill corner portion 327-4, and are hidden by the fourth

grill corner portion 327-4. Specifically, the second module

body of the fourth vane module and the first module body of

the first vane module are disposed at the upper side of the

fourth grill corner portion.

Referring to FIG. 15, the vane module 200 disposed in

D the 12 o'clock direction is defined as a first vane module

201, the vane module 200 disposed in the 3 o'clock direction

is defined as a second vane module 202, the vane module 200

disposed in the 6 o'clock direction is defined as a third

vane module 203, and the vane module 200 disposed in the 9

o'clock direction is defined as a fourth vane module 204.

The first vane module 201, the second vane module 202,

the third vane module 203, and the fourth vane module 204

are disposed at intervals of 90 degrees about the center C

of the front panel 300.

The first vane module 201 and the third vane module

203 are disposed parallel to each other, and the second vane

module 202 and the fourth vane module 204 are disposed

parallel to each other.

Four side covers 314 are disposed at the front body

310. For convenience of description, the side cover 314 disposed outside the first vane module 201 is defined as a first side cover 314-1, the side cover 314 disposed outside the second vane module 202 is defined as a second side cover

314-2, the side cover 314 disposed outside the third vane

module 203 is defined as a third side cover 314-3, and the

side cover 314 disposed outside the fourth vane module 204

is defined as a fourth side cover 314-4.

Each side cover 314 is assembled to one edge of the

front frame 312, is located at the lower side of the front

J frame 312, is exposed outside, and is disposed outside a

corresponding vane module 202.

The corner cover 316 disposed between the first vane

module 201 and second vane module 202 is defined as a first

corner cover 316-1. The corner cover 316 disposed between

the second vane module 202 and the third vane module 203 is

defined as a second corner cover 316-2. The corner cover

316 disposed between the third vane module 203 and the

fourth vane module 204 is defined as a third corner cover

316-3. The corner cover 316 disposed between the fourth

vane module 204 and the first vane module 201 is defined as

a fourth corner cover 316-4.

The first corner cover 316-1 is assembled to one

corner of the front frame 312, is located at the lower side

of the front frame 312, is located between the first side

cover 314-1 and the second side cover 314-2, and is exposed outside.

The second corner cover 316-2 is assembled to one

corner of the front frame 312, is located at the lower side

of the front frame 312, is located between the second side

cover 314-2 and the third side cover 314-3, and is exposed

outside.

The third corner cover 316-3 is assembled to one

corner of the front frame 312, is located at the lower side

of the front frame 312, is located between the third side

D cover 314-3 and the fourth side cover 314-4, and is exposed

outside.

The fourth corner cover 316-4 is assembled to one

corner of the front frame 312, is located at the lower side

of the front frame 312, is located between the fourth side

cover 314-4 and the first side cover 314-1, and is exposed

outside.

The first corner cover 316-1 and the third corner

cover 316-3 are disposed about the center C of the front

panel 300 in the diagonal direction, and are disposed so as

to face each other. The second corner cover 316-2 and the

fourth corner cover 316-4 are disposed about the center C of

the front panel 300 in the diagonal direction, and are

disposed so as to face each other.

Imaginary diagonal lines passing through the center of

the front panel 300 are defined as P1 and P2. P1 is an imaginary line joining the first corner cover 316-1 and the third corner cover 316-3 to each other, and P2 is an imaginary line joining the second corner cover 316-2 and the fourth corner cover 316-4 to each other.

A first grill corner portion 327-1, a second grill

corner portion 327-2, a third grill corner portion 327-3,

and a fourth grill corner portion 327-4 formed so as to

extend towards corners are disposed at the suction panel

320.

D On the basis of the grill corner portions, the first

vane module 201 is disposed outside one edge of the suction

grill 320, and is disposed between the first grill corner

portion 327-1 and the second grill corner portion 327-2.

The second vane module 202 is disposed outside one

edge of the suction grill, and is disposed between the

second grill corner portion 327-2 and the third grill corner

portion 327-3.

The third vane module 203 is disposed outside one edge

of the suction grill, and is disposed between the third

grill corner portion 327-3 and the fourth grill corner

portion 327-4.

The fourth vane module 204 is disposed outside one

edge of the suction grill, and is disposed between the

fourth grill corner portion 327-4 and the first grill corner

portion 327-1.

The first grill corner portion 327-1 is formed so as

to extend toward the first corner cover 316-1, and has a

surface continuously connected to the outer surface of the

first corner cover 316-1.

The grill corner border 326 of the first grill corner

portion 327-1 is opposite the corner decoration inner border

317 of the first corner cover 316-1, and defines a corner

decoration inner border gap 317a.

The grill corner borders 326 of the other grill corner

J portions 327 are opposite the corner decoration inner

borders 317 of the other corner cover 316, and define corner

decoration inner border gaps 317a.

The first module body 410 and the second module body

420 are located inside the corner cover 316 (specifically,

at the center C side of the front panel). In particular,

the first module body 410 and the second module body 420 are

disposed so as to face each other on the basis of the

imaginary diagonal lines P1 and P2.

Specifically, the first module body 410 of the first

vane module 201 and the second module body 420 of the fourth

vane module 204 are disposed so as to face each other on the

basis of the imaginary diagonal line P2.

The first module body 410 of the second vane module

202 and the second module body 420 of the first vane module

201 are disposed so as to face each other on the basis of the imaginary diagonal line Pl.

The first module body 410 of the third vane module 201

and the second module body 420 of the second vane module 202

are disposed so as to face each other on the basis of the

imaginary diagonal line P2.

The first module body 410 of the fourth vane module

204 and the second module body 420 of the third vane module

203 are disposed so as to face each other on the basis of

the imaginary diagonal line Pl.

Meanwhile, the suction grill 320 is located at the

lower side of the first module bodies 410 and the second

module bodies 420, and conceals the first module bodies 410

and the second module bodies 420 so as not to be exposed.

That is, in the case in which the suction grill 320 is in

tight contact with the front body 310, the first module

bodies 410 and the second module bodies 420 are hidden by

the suction grill 320 and thus are not exposed to the user.

Since the first module bodies 410 and the second

module bodies 420 are hidden, the fastening holes 403 formed

in the first module bodies 410 and the second module bodies

420 are hidden by the suction grill 320 and thus are not

exposed to the user.

The suction grill 320 has four grill corner portions

327 disposed so as to face the respective corner covers 316.

Each grill corner portion 327 is disposed so as to be opposite a corresponding one of the corner covers 316.

The grill corner portion 327 disposed so as to be

opposite the first corner cover 316-1 is defined as a first

grill corner portion 327-1, the grill corner portion 327

disposed so as to be opposite the second corner cover 316-2

is defined as a first grill corner portion 327-2 , the grill

corner portion 327 disposed so as to be opposite the third

corner cover 316-3 is defined as a third grill corner

portion 327-3, and the grill corner portion 327 disposed so

D as to be opposite the fourth corner cover 316-4 is defined

as a fourth grill corner portion 327-4.

When viewed in a bottom view, the plurality of module

bodies 400 is located at the upper side of the grill corner

portion 327, and is hidden by the grill corner portion 327.

In particular, the grill side border 325 defining the

edge of the grill corner portion 327 is disposed so as to

face the corner decoration inner border 317 defining the

inner edge of the corner cover 316, and the curved shapes

thereof correspond to each other.

In the same manner, the grill corner border 326

defining the edge of the grill corner portion 327 is

disposed so as to face the inner edge of the first vane 210,

and the curved shapes thereof correspond to each other.

Meanwhile, in this embodiment, a permanent magnet 318

and a magnetic force fixing portion 328 are disposed in order to maintain the state in which the suction grill 320 is in tight contact with the front body 310.

One of the permanent magnet 318 and the magnetic force

fixing portion 328 may be disposed at the front body 310,

and the other of the magnetic force fixing portion 328 and

the permanent magnet 318 may be disposed at the upper

surface of each grill corner portion 327.

The permanent magnet 318 and the magnetic force fixing

portion 328 are located at the upper side of each grill

J corner portion 327, and are hidden by each grill corner

portion 327. Since the permanent magnet 318 and the

magnetic force fixing portion 328 are located outside each

corner of the suction grill 320, the distance between the

suction grill 320 and the front body 310 may be minimized.

In the case in which the suction grill 320 and the

front body 310 are spaced apart from each other, pressure in

the suction channel 103 is reduced.

In this embodiment, the permanent magnet 318 is

disposed at the front body 310. Specifically, the permanent

magnet is disposed at the corner frame 313.

The magnetic force fixing portion 328 is made of a

metal material capable of generating attractive force

through interaction with the permanent magnet 318. The

magnetic force fixing portion 328 is disposed at the upper

surface of the suction grill 320. Specifically, the magnetic force fixing portion 328 is disposed at the upper surface of the grill corner portion 327.

When the suction grill 320 is moved upwards and

approaches the permanent magnet 318, the permanent magnet

318 attracts the magnetic force fixing portion 328 to fix

the suction grill 320. Magnetic force of the permanent

magnet 318 is less than weight of the suction grill 320.

When the suction grill 320 is not pulled by the elevator

500, therefore, coupling between the permanent magnet 318

D and the magnetic force fixing portion 328 is released.

When viewed in a top view or a bottom view, the

permanent magnet 318 is disposed on the imaginary diagonal

lines P1 and P2. The permanent magnet 318 is located inside

the corner cover 316.

When viewed in a top view or a bottom view, one of

four permanent magnets 318 is disposed between the first

module body 410 of the first vane module 201 and the second

module body 420 of the fourth vane module 204. The other

three permanent magnets are also disposed between the first

module bodies 410 and the second module bodies 420 of the

respective vane modules.

The permanent magnet 318 and the magnetic force fixing

portion 328 are located at the upper side of each grill

corner portion 327, and are hidden by each grill corner

portion 327.

In this embodiment, when the indoor unit is not

operated (the indoor blowing fan is not operated), in each

vane module 200, as shown, the second vane 220 is located at

the upper side of the first vane 210, and the first vane 210

covers the discharge port 102. The lower surface of the

first vane 210 forms a continuous surface with the lower

surface of the suction grill 320 and the lower surface of

the side cover 314.

J When the indoor unit is not operated, the second vane

220 is concealed when viewed from the outside, since the

second vane is located at the upper side of the first vane

210. Only when the indoor unit is operated, the second vane

220 is exposed to the user. When the indoor unit is not

operated, therefore, the second vane 220 is located in the

discharge channel 104, and the first vane 210 covers most of

the discharge port 102.

Although the first vane 210 covers most of the

discharge port 102 in this embodiment, the first vane 210

may be formed so as to cover the entirety of the discharge

port 102 depending on design.

When the indoor blowing fan is operated in the state

in which the second vane 220 is received, the vane motor 230

is operated, and the first vane 210 and the second vane 220

may provide one of the six discharge steps P1, P2, P3, P4,

P5, and P6.

The state in which the indoor unit is stopped and thus

the vane module 200 is not operated is defined as a stop

step PO.

In stop step PO, the vane module 200 is not operated.

When the indoor unit is not operated, the vane module 200 is

maintained in stop step PG.

In stop step PO, in the vane module 200, the vane

J motor 230 maximally rotates the driving link 240 in a first

direction (in the clockwise direction in the figures of this

embodiment).

At this time, the second driving link body 247

constituting the driving link 240 is supported by one end

271 of the stopper 270, whereby further rotation of the

driving link in the first direction is limited.

In order to prevent excessive rotation of the driving

link 240, the second driving link body 247 and the other end

270b of the stopper 270 interfere with each other in stop

step PG. The second driving link body 247 is supported by

the stopper 270, whereby further rotation of the driving

link is limited.

The driving link 240 is rotated about the core link

shaft 243 in the first direction, and the first vane link

250 is rotated about the 1-2 vane link shaft 252 in the first direction.

The first vane 210 is rotated while being restrained

by the driving link 240 and the first vane link 250, and is

located in the discharge port 102. The lower surface of the

first vane 210 forms a continuous surface with the suction

panel 320 and the side cover 314.

In stop step P0, the second vane 220 is located at the

upper side of the first vane 210. When viewed from above,

the second vane 220 is located between the first joints 214,

J and is located at the upper side of the first vane body 212.

In stop step P0, the driving link 240, the first vane

link 250, and the second vane link 260 are located at the

upper side of the first vane 210. The driving link 240, the

first vane link 250, and the second vane link 260 are hidden

by the first vane 210 and thus are not visible from the

outside. That is, in stop step P0, the first vane 210

covers the discharge port 102, and prevents parts

constituting the vane module 200 from being exposed outside.

In stop step P0, the driving link 240 is maximally

rotated in the clockwise direction, and the second vane line

260 is maximally moved upwards.

When the indoor unit is not operated, the second vane

220 is concealed when viewed from the outside, since the

second vane is located at the upper side of the first vane

210. Only when the indoor unit is operated, the second vane

220 is exposed to the user.

The positional relationship between the shafts forming

the centers of rotation of the respective links in stop step

PO will be described.

First, the first joint portion 216 and the second

joint portion 217 of the first vane 210 are disposed

approximately horizontally. The second joint rib 224 of the

second vane 220 is located at the upper side of the first

joint rib 214.

J When viewed from the side, the second joint rib 224 is

located at the upper side of the second joint portion 217

and the first joint portion 216, and is located between the

first joint portion 216 and the second joint portion 217.

Since the 2-1 vane link shaft 261 is coupled to the

second joint rib 224, the 2-1 vane link shaft 261 is also

located at the upper side of the second joint portion 217

and the first joint portion 216.

The first joint portion 216 and the second joint

portion 217 are located at the upper side of the first vane

body 212, and are located at the lower side of the second

vane body 222.

In the state in which the indoor unit is stopped, the

second vane 220 is located at the upper side of the first

vane 210, and the 2-1 vane link shaft 261 is located at the

upper side of the first driving link shaft 241 and the 1-1 vane link shaft 252.

In addition, the 2-1 vane link shaft 261 is located

higher than the second vane shaft 221, and the 2-2 vane link

journal 262 is located higher than the 2-1 vane link shaft

261.

The 2-2 vane link journal 262 is located at the upper

side of the 2-1 vane link shaft 261, and is located at the

upper side of the core link shaft 243.

Next, relative positions and directions of the

] respective links in stop step PO will be described.

The first vane link 250 and the second vane link 260

are disposed in the same direction. The upper end of each

of the first vane link 250 and the second vane link 260 is

located at the front side in the discharge direction of air,

and the rear end thereof is located at the rear side in the

discharge direction of air.

Specifically, the 1-2 vane link shaft 252 of the first

vane link 250 is located at the front side, and the 1-1 vane

link shaft 251 of the first vane link 250 is located at the

rear side. The 1-2 vane link shaft 252 of the first vane

link 250 is located higher than the 1-1 vane link shaft 251.

The first vane link 250 is disposed so as to be inclined

rearwards and downwards from the 1-2 vane link shaft 252.

In the same manner, the 2-2 vane link journal 262 of

the second vane link 260 is located at the front side, and the 2-1 vane link shaft 261 of the second vane link 260 is located at the rear side. The 2-2 vane link journal 262 of the second vane link 260 is located higher than the 2-1 vane link shaft 261. The second vane link 260 is disposed so as to be inclined rearwards and downwards from the 2-2 vane link journal 262.

The first driving link body 246 of the driving link

240 is disposed in the same direction as the first vane link

250 and the second vane link 260, and the second driving

D link body 247 intersects the disposition direction of the

first vane link 250 and the second vane link 260.

In stop step PO, the driving link 240 is rotated in a

second direction (in the counterclockwise direction in the

figures of this embodiment), which is opposite the first

direction, to provide discharge step Pl.

In discharge step P1, the vane module 200 may provide

horizontal wind.

In the state of the horizontal wind, air discharged

from the discharge port 102 may be guided by the first vane

210 and the second vane 220 and may flow in the direction

parallel with the ceiling or the floor. In the case in

which the discharged air flows as the horizontal wind, it is

possible to maximize the flow distance of the air.

Discharge step P1 may provide horizontal wind, and the flow in which discharged air flows along the ceiling of the room, flows downwards toward the floor after colliding with the wall of the room, and returns to the indoor unit after colliding with the floor may be formed.

That is, discharge step P1 does not directly provide

air to a person in the room but provides indirect wind to

the person in the room.

In discharge step P1, the upper surfaces of the first

vane 210 and the second vane 220 may form a continuous

D surface. In discharge step P1, the first vane 210 and the

second vane 220 are connected to each other like a single

vane, and guide the discharged air.

When the vane module 200 provides discharge step P1,

which is one of the plurality of discharge steps, the first

vane 210 is located at the lower side of the discharge port

102, and the front end 222a of the second vane 220 is

located higher than the rear end 212a of the first vane 210.

The upper surface of the second vane 220 is located

higher than the upper surface of the first vane 210.

In this embodiment, the first vane 210 is located at

the front side in the flow direction of the discharged air,

and the second vane 220 is located at the rear side in the

flow direction of the discharged air. The front end 222a of

the second vane 220 may be adjacent to or may contact the

rear end 212b of the first vane 210. In discharge step P1, the distance Si between the front end 222a of the second vane 220 and the rear end 212b of the first vane 210 may be minimized.

The rear end 222b of the second vane is located higher

than the discharge port 102, the front end 222a of the

second vane is located lower than the discharge port 102,

and the rear end 212b of the first vane is located lower

than the front end 222a of the second vane.

In discharge step P1, the front end 222a of the second

D vane 220 is located higher than the rear end 212b of the

first vane 210.

In the case in which the front end 222a and the rear

end 212b are adjacent to or contact each other, leakage of

the discharged air between the first vane 210 and the second

vane 220 may be minimized.

In this embodiment, the front end 222a and the rear

end 212b are adjacent to each other, but do not contact each

other.

When the vane module 200 forms the horizontal wind in

discharge step P1, intensity of the horizontal wind may be

increased, since the first vane 210 and the second vane 220

are connected to each other and operated like a single vane.

That is, since the discharged air is guided along the upper

surface of the second vane 220 and the upper surface of the

first vane 210 in the horizontal direction, directivity of the discharged air may be further improved than the case in which the horizontal wind is formed using a single vane.

When forming the horizontal wind, the second vane 220

is disposed so as to be further inclined in the upward

downward direction than the first vane 210.

In the state of the horizontal wind, it is

advantageous that the first vane 210 be located lower than

the discharge port 102 and the second vane 220 be disposed

so as to overlap the discharge port 102, when viewed from

D the side.

In discharge step P1, the second vane 220 is rotated

in place about the second vane shaft 221; however, the first

vane 210 is turned (swung) in the discharge direction of

air, since the first vane is assembled to the driving link

240 and the first vane link 250.

When PO is switched to P1, the second vane 220 is

rotated about the second vane shaft 221, the first vane 210

is moved downwards while advancing in the discharge

direction of air, and the front end 212a of the first vane

is turned in the first direction (the clockwise direction in

the figures).

Through rotation of the driving link 240 and the first

vane link 250, the first vane 210 may be moved to the lower

side of the discharge port 102, and the first vane 210 may

be disposed approximately horizontally. Since a vane of a conventional indoor unit is rotated in place, it is not possible to realize disposition of the first vane 210 in this embodiment.

When the vane motor 230 rotates the driving link 240

in the second direction (the counterclockwise direction) in

stop step PO, the second vane link 260 coupled to the

driving link 240 is rotated in response to the driving link

240.

Specifically, when stop step PO is switched to

D discharge step P1, the driving link 240 is rotated in the

counterclockwise direction, the first vane line 210 is

rotated in the counterclockwise direction in response to

rotation of the driving link 240, and the second vane link

220 is moved downwards while being rotated relative thereto.

Since the second vane 220 is assembled to the second

vane shaft 221 and the second vane link 260 so as to be

rotatable relative thereto, the second vane is rotated about

the second vane shaft 221 in the clockwise direction due to

downward movement of the second vane link 220.

When stop step PO is switched to discharge step P1 in

order to form the horizontal wind, the first vane 210 and

the second vane 220 are rotated in opposite directions.

In discharge step P1, the vane motor 230 is rotated 78

degrees (P1 rotational angle), and the first vane 210 has an

inclination of about 16 degrees (first vane P1 inclination) and the second vane 220 has an inclination of about 56.3 degrees (second vane P1 inclination) by rotation of the vane motor 230.

The positional relationship between the shafts forming

the centers of rotation of the respective links in discharge

step P1 will be described.

First, the second joint portion 217 and the first

joint portion 216 of the first vane 210 are disposed so as

to be inclined forwards in the discharge direction of air,

D unlike PO. When viewed from the side, the third joint

portion 226 of the second vane 220 is disposed at the

rearmost side, the first joint portion 216 is disposed at

the frontmost side, and the second joint portion 217 is

disposed between the first joint portion 216 and the third

joint portion 226.

The 2-1 vane link shaft 261 is located lower than the

second vane shaft 221, the first driving link shaft 241 is

located lower than the 2-1 vane link shaft 261, and the 1-1

vane link shaft 251 is located lower than the first driving

link shaft 241.

In P1, the third joint portion 226, the second joint

portion 217, and the first joint portion 216 are disposed in

a line, and are disposed so as to face forwards and

downwards in the discharge direction of air. When providing

discharge step P1, the second vane shaft 221, the 2-1 vane link shaft 261, the first driving link shaft 241, and the 1

1 vane link shaft 251 are disposed in a line.

In some embodiments, the third joint portion 226, the

second joint portion 217, and the first joint portion 216

may not be disposed in a line.

In addition, the second vane shaft 221 may also be

disposed in a line with the third joint portion 226, the

second joint portion 217, and the first joint portion 216.

In this case, the second vane shaft 221 is located at the

J rear side of the third joint portion 226.

In P1, the first vane 210 and the second vane 220

provide horizontal wind. The horizontal wind does not mean

that the discharge direction of air is exactly horizontal.

The horizontal wind means an angle by which discharged air

can flow farthest in the horizontal direction through

connection between the first vane 210 and the second vane

220 in the state in which the first vane 210 and the second

vane 220 are connected to each other like a single vane.

In discharge step P1, the distance Si between the

front end 221 of the second vane 220 and the rear end 212b

of the first vane 210 may be minimized.

In the state of the horizontal wind, air guided by the

second vane 220 is guided to the first vane 210. In the

case in which the discharged air flows as the horizontal

wind in P1, it is possible to maximize the flow distance of the air.

Since the discharge channel 104 is formed in the

upward-downward direction, the inclination of the second

vane 220 adjacent to the suction port 101 is steeper than

the inclination of the first vane 210.

In discharge step P1, the 1-1 vane link shaft 251 of

the first vane link 250 is located at the lower side of the

1-2 vane link shaft 252.

In discharge step P1, the 2-1 vane link shaft 261 of

J the second vane link 260 is located at the lower side of the

2-2 vane link journal 262.

In discharge step P1, the first driving link shaft 241

of the driving link 240 is located at the lower side of the

second driving link shaft 242 and the core link shaft 243.

In discharge step P1, in the upward-downward

direction, the third joint portion 226 is located at the

uppermost side, the first joint portion 216 is located at

the lowermost side, and the second joint portion 217 is

located therebetween.

In discharge step P1, the first joint portion 216 and

the second joint portion 217 are located between the core

link shaft 243 and the 1-2 vane link shaft 252. When

providing discharge step P1, the first driving link shaft

241 and the 1-1 vane link shaft 251 are located between the

core link shaft 243 and the 1-2 vane link shaft 252.

In discharge step P1, the first driving link shaft 241

and the 1-1 vane link shaft 251 are located at the lower

side of the suction panel 320. In discharge step P1, the

first driving link shaft 241 and the 1-1 vane link shaft 251

are located at the lower side of the discharge port 102.

The 2-1 vane link shaft 261 is located over the border of

the discharge port 102.

Due to the above disposition, the first vane 210 is

located at the lower side of the discharge port 102 in

] discharge step Pl. In discharge step P1, the front end 222a

of the second vane 220 is located at the lower side of the

discharge port 102, and the rear end 222b thereof is located

at the upper side of the discharge port 102.

Next, relative positions and directions of the

respective links in discharge step P1 will be described.

The longitudinal direction of the first driving link

body 246 is defined as D-D'. The longitudinal direction of

the first vane link 250 is defined as Li-Li'. The

longitudinal direction of the second vane link 260 is

defined as L2-L2'.

In discharge step P1, the first vane link 250, the

second vane link 260, and the first driving link body 246

are disposed in the same direction. In this embodiment, the

first vane link 250, the second vane link 260, and the first

driving link body 246 are all disposed in the upward downward direction in discharge step Pl.

Specifically, Li-Li' of the first vane link 250 is

disposed almost vertically, and L2-L2' of the second vane

link 260 is disposed almost vertically. D-D' of the first

driving link body 246 is disposed so as to face downwards in

the discharge direction of air.

In discharge step P1, the first vane 210 is located at

the lower side of the discharge port 102, and the front end

222a of the second vane 220 is located at the lower side of

J the discharge port 102. That is, in the state of the

horizontal wind, only a portion of the second vane 220 is

located outside the discharge port 102, and the entirety of

the first vane 210 is located outside the discharge port

102.

In discharge step P1, the front end 212a of the first

vane 210 is located further forwards than the front edge

102a of the discharge port 102 on the basis of the discharge

port 102.

In the state of the horizontal wind of discharge step

P1, the driving link 240 may be rotated in the second

direction (in the counterclockwise direction in the figures

of this embodiment), which is opposite the first direction,

to provide discharge step P2.

When the vane module provides one of discharge steps

P2 to P5, the rear end 212b of the first vane is located

higher than the front end 222a of the second vane and is

located level with or lower than the 2-1 vane link shaft

261.

In addition, when the vane module provides one of

discharge steps P2 to P5, the angle formed by the core link

shaft 243, the first driving link shaft 241, and the 1-1

vane link shaft 251 in the clockwise direction with respect

to an imaginary straight line D-D' joining the core link

J shaft 243 and the first driving link shaft 241 to each other

is an acute angle.

In discharge step P2, the vane module 200 may provide

inclined wind. The inclined wind is defined as a discharge

step between horizontal wind and vertical wind. In this

embodiment, the inclined wind means discharge steps P2, P3,

P4, and P5.

In the state of the inclined wind, air is discharged

further downwards than in the state of the horizontal wind

of discharge step Pl. In discharge step P2, both the first

vane 210 and the second vane 220 are adjusted so as to face

further downwards than in discharge step Pl.

Discharge step P2 may provide wind approximate to

horizontal wind, and the flow in which discharged air flows

along the ceiling of the room, flows downwards toward the

floor after colliding with the wall of the room, and returns to the indoor unit after colliding with the floor may be formed.

Discharge step P2 provides indirect wind to the person

in the room.

In discharge step P2, the distance S2 between the

front end 222a of the second vane 220 and the rear end 212b

of the first vane 210 is greater than the distance Si in

discharge step Pl.

That is, when discharge step P1 is switched to P2, the

J distance between the front end 222a of the second vane 220

and the rear end 212b of the first vane 210 further

increases. In discharge step P2, the first vane 210 and the

second vane 220 are disposed further vertically than in Pl.

When discharge step P1 is switched to discharge step

P2, the front end 222a of the second vane 220 is moved

downwards, and the rear end 212b of the first vane 210 is

moved upwards.

In discharge step P2, the front end 222a of the second

vane 220 and the rear end 212b of the first vane 210 are

located at similar heights.

When discharge step P1 is switched to discharge step

P2, the second vane 220 is rotated in place about the second

vane shaft 221; however, the first vane 210 is turned

(swung), since the first vane is assembled to the driving

link 240 and the first vane link 250.

In particular, when P1 is switched to P2, the first

vane 210 further advances in the discharge direction of air,

and the front end 212a of the first vane is further turned

in the first direction (the clockwise direction in the

figures).

Since the second vane 220 is assembled to the second

vane shaft 221 and the second vane link 260 so as to be

rotatable relative thereto, the second vane is further

rotated about the second vane shaft 221 in the clockwise

J direction due to rotation of the second vane link 220.

The front end 222a of the second vane 220 is further

rotated in the second direction (the clockwise direction in

the figures).

When discharge step P1 is switched to discharge step

P2, the first vane 210 and the second vane 220 are rotated

in opposite directions.

In discharge step P2, the vane motor 230 is rotated

828 degrees (P2 rotational angle), and the first vane 210

has an inclination of about 18.6 degrees (first vane P2

inclination) and the second vane 220 has an inclination of

about 59.1 degrees (second vane P2 inclination) by rotation

of the vane motor 230.

The positional relationship between the shafts forming

the centers of rotation of the respective links in discharge

step P2 will be described.

In discharge step P2, the second joint portion 217 and

the first joint portion 216 of the first vane 210 are

disposed so as to be inclined forwards in the discharge

direction of air, similarly to Pl.

When viewed from the side, the third joint portion 226

of the second vane 220 is disposed at the rearmost side, the

first joint portion 216 is disposed at the frontmost side,

and the second joint portion 217 is disposed between the

first joint portion 216 and the third joint portion 226.

D In P2, the third joint portion 226, the second joint

portion 217, and the first joint portion 216 are disposed so

as to face forwards and downwards in the discharge direction

of air, when viewed from the side of vane module 200.

In discharge step P2, the third joint portion 226 is

moved further downwards, and the first joint portion 216 and

the second joint portion 217 are moved further forwards.

That is, the distance between the second vane 220 and the

first vane 210 increases.

In discharge step P2, the disposition of the first

vane link 250, the second vane link 260, and the driving

link 240 is similar to that in discharge step Pl.

In discharge step P2, the 1-1 vane link shaft 251 of

the first vane link 250 is located at the lower side of the

1-2 vane link shaft 252. In discharge step P2, the 2-1 vane

link shaft 261 of the second vane link 260 is located at the lower side of the 2-2 vane link journal 262. In discharge step P2, the first driving link shaft 241 of the driving link 240 is located at the lower side of the second driving link shaft 242 and the core link shaft 243.

In discharge step P2, the second vane shaft 221 is

located at the uppermost side, the third joint portion 226

is located at the lower side of the second vane shaft 221,

the second joint portion 217 is located is located at the

lower side of the third joint portion 226, and the first

J joint portion 216 is located at the lower side of the second

joint portion 217.

In discharge step P2, the second joint portion 217 is

further rotated about the core link shaft 243 toward the 1-2

vane link shaft 252.

In discharge step P2, the entirety of the first vane

210 is located at the lower side of the discharge port 102

on the basis of the suction panel 320 or the discharge panel

102. In discharge step P2, the front end 222a of the second

vane 220 is located at the lower side of the discharge port

102, and the rear end 222b thereof is located at the upper

side of the discharge port 102.

In discharge step P2, therefore, the first driving

link shaft 241 and the 1-1 vane link shaft 251 are located

at the lower side of the suction panel 320. In discharge

step P2, the first driving link shaft 241 and the 1-1 vane link shaft 251 are located at the lower side of the discharge port 102. The 2-1 vane link shaft 261 is located over the border of the discharge port 102.

Next, relative positions and directions of the

respective links in discharge step P2 will be described.

In discharge step P2, the first vane link 250 and the

second vane link 260 are disposed in approximately the same

direction, and the first driving link body 246 is disposed

so as to be inclined forwards and downwards. Particularly,

J in discharge step P2, the first vane link 250 and the second

vane link 260 are disposed approximately vertically.

Specifically, when discharge step P1 is switched to

discharge step P2, Li-Li' of the first vane link 250 is

further rotated in the discharge direction of air. When

discharge step P1 is switched to discharge step P2, L2-L2'

of the second vane link 260 is further rotated in the

direction opposite the discharge direction of air. When

discharge step P1 is switched to discharge step P2, D-D' of

the first driving link body 246 is further rotated in the

discharge direction of air.

In discharge step P2, the entirety of the first vane

210 is located at the lower side of the discharge port 102,

and only the front end 222a of the second vane 220 is

located at the lower side of the discharge port 102.

When discharge step P1 is switched to discharge step

P2, the front end 212a of the first vane 210 is moved

further forwards than the front edge 102a of the discharge

port 102 on the basis of the discharge port 102.

In discharge step P2, the driving link 240 may be

rotated in the second direction (in the counterclockwise

direction in the figures of this embodiment), which is

opposite the first direction, to provide discharge step P3.

In discharge step P3, the vane module 200 may provide

J inclined wind that is discharged further downwards than in

discharge step P2. Discharge steps P3 to P5 provide

inclined wind in which air is directly provided to the

person in the room.

At the time of cooling, discharged air is heavier than

indoor air and thus moves downwards. At the time of

heating, discharged air is lighter than indoor air and thus

moves upwards. Consequently, discharge step P3 is mainly

used at the time of cooling, and discharge step P4, a

description of which will follow, is mainly used at the time

of heating.

In the state of the inclined wind of discharge step

P3, air is discharged further downwards than in the state of

the inclined wind of discharge step P2. In discharge step

P3, both the first vane 210 and the second vane 220 are

adjusted so as to face further downwards than in discharge step P2.

In discharge step P3, the distance S3 between the

front end 222a of the second vane 220 and the rear end 212b

of the first vane 210 is greater than the distance S2 in

discharge step P2.

That is, when discharge step P2 is switched to P3, the

distance between the front end 222a of the second vane 220

and the rear end 212b of the first vane 210 further

increases. In discharge step P3, the first vane 210 and the

J second vane 220 are disposed further vertically than in P2.

When discharge step P2 is switched to discharge step

P3, the front end 222a of the second vane 220 is moved

further downwards, and the rear end 212b of the first vane

210 is moved further upwards.

In discharge step P3, the front end 222a of the second

vane 220 is located lower than the rear end 212b of the

first vane 210.

When discharge step P2 is switched to discharge step

P3, the second vane 220 is rotated in place about the second

vane shaft 221; however, the first vane 210 is turned

(swung), since the first vane is assembled to the driving

link 240 and the first vane link 250.

When discharge step P2 is switched to discharge step

P3, the first vane 210 is located almost in place, and is

rotated in the first direction (the clockwise direction).

When discharge step P2 is switched to discharge step P3, the

second vane 220 is further rotated in the first direction

(the clockwise direction).

When discharge step P2 is switched to discharge step

P3, the first vane 210 is located in place in the first

direction (the clockwise direction), rather than advancing

in the discharge direction.

When discharge step P2 is switched to discharge step

P3, the front end 222a of the second vane 220 is further

J rotated in the first direction (the clockwise direction) due

to downward movement of the second vane link 220.

When discharge step P2 is switched to discharge step

P3, the first vane 210 and the second vane 220 are rotated

in opposite directions.

In discharge step P3, the vane motor 230 is rotated 95

degrees (P3 rotational angle), and the first vane 210 has an

inclination of about 29.6 degrees (first vane P3

inclination) and the second vane 220 has an inclination of

about 67.3 degrees (second vane P3 inclination) by rotation

of the vane motor 230.

The positional relationship between the shafts forming

the centers of rotation of the respective links in discharge

step P3 will be described.

In discharge step P3, the second joint portion 217 and

the first joint portion 216 of the first vane 210 are disposed so as to be inclined forwards in the discharge direction of air, similarly to P2.

When viewed from the side, the third joint portion 226

of the second vane 220 is disposed at the rearmost side, the

first joint portion 216 is disposed at the frontmost side,

and the second joint portion 217 is disposed between the

first joint portion 216 and the third joint portion 226.

In discharge step P3, the third joint portion 226 is

moved further downwards. In discharge step P3, the first

J joint portion 216 and the second joint portion 217 are moved

upwards due to rotation of the first vane link 250 and the

first driving link body 246 in the second direction.

Since the length of the first driving link body 246 is

less than the length of the first vane link 250, the upper

side of the second joint portion 217 is higher.

In discharge step P3, the disposition of the shafts at

the driving link 240, the first vane link 250, and the

second vane link 260 is similar to that in discharge step

P2.

However, relative heights of the first driving link

shaft 241, the 1-1 vane link shaft 251, and the 2-1 vane

link shaft 261 rotated by operation of the driving link 240,

the first vane link 250, and the second vane link 260 are

varied.

In discharge step P3, the first driving link shaft 241 is moved upwards, and the 2-1 vane link shaft 261 is moved downwards, whereby these shafts are located at similar heights in the upward-downward direction.

When discharge step P2 is switched to discharge step

P3, the second joint portion 217 is further rotated about

the core link shaft 243 toward the 1-2 vane link shaft 252,

and the second joint portion 217 is spaced further apart

from the 2-1 vane link shaft 261.

In discharge step P3, the 2-2 vane link journal 262 is

J located lower than the core link shaft 243.

When discharge step P2 is switched to discharge step

P3, the 2-1 vane link shaft 261 is moved further rearwards

than the 2-2 vane link journal 262.

On the basis of the suction panel 320 or the discharge

port 102, the position of the first vane 210 and the second

vane 220 in discharge step P3 is similar to that in

discharge step P2.

In discharge step P3, therefore, the first driving

link shaft 241 and the 1-1 vane link shaft 251 are located

at the lower side of the suction panel 320 and the discharge

port 102. The 2-1 vane link shaft 261 is located over the

border of the discharge port 102.

Next, relative positions and directions of the

respective links in discharge step P3 will be described.

In discharge step P3, the first vane link 250 and the second vane link 260 are disposed in opposite directions.

In discharge step P3, the first driving link body 246

and the first vane link 250 are disposed so as to be

inclined forwards and downwards. In discharge step P3, the

second driving link body 247 is disposed so as to face

rearwards, and the second vane link 260 is disposed so as to

face rearwards and downwards.

Specifically, when discharge step P2 is switched to

discharge step P3, Li-Li' of the first vane link 250 is

D further rotated in the discharge direction of air. When

discharge step P2 is switched to discharge step P3, L2-L2'

of the second vane link 260 is further rotated in the

direction opposite the discharge direction of air. When

discharge step P2 is switched to discharge step P3, D-D' of

the first driving link body 246 is further rotated in the

discharge direction of air.

When discharge step P2 is switched to discharge step

P3, both the first vane 210 and the second vane 220 are

turned or rotated further vertically downwards on the basis

of the discharge port 102.

In discharge step P3, the driving link 240 may be

rotated in the second direction (in the counterclockwise

direction in the figures of this embodiment), which is

opposite the first direction, to provide discharge step P4.

In discharge step P4, the vane module 200 may provide

inclined wind that is discharged further downwards than in

discharge step P3. In the state of the inclined wind of

discharge step P4, air is discharged further downwards than

in the state of the inclined wind of discharge step P3.

In discharge step P4, both the first vane 210 and the

second vane 220 are adjusted so as to face further downwards

than in discharge step P3.

In discharge step P4, the distance S4 between the

J front end 222a of the second vane 220 and the rear end 212b

of the first vane 210 is greater than the distance S3 in

discharge step P3.

When discharge step P3 is switched to P4, the distance

between the front end 222a of the second vane 220 and the

rear end 212b of the first vane 210 further increases. In

discharge step P4, the first vane 210 and the second vane

220 are disposed further vertically than in P3.

When discharge step P3 is switched to discharge step

P4, the front end 222a of the second vane 220 is moved

further downwards, and the rear end 212b of the first vane

210 is moved further upwards.

In discharge step P4, the front end 222a of the second

vane 220 is located lower than in discharge step P3, and the

rear end 212b of the first vane 210 is located higher than

in discharge step P3.

When discharge step P3 is switched to discharge step

P4, the second vane 220 is rotated in place about the second

vane shaft 221. When discharge step P3 is switched to

discharge step P4, the first joint portion 216 of the first

vane 210 stays almost in place, and the second joint portion

217 is rotated about the first joint portion 216 in the

first direction (the clockwise direction).

That is, when discharge step P3 is switched to

discharge step P4, the first vane 210 is hardly moved, and

D is rotated in place. When discharge step P3 is switched to

discharge step P4, the first vane 210 is rotated about the

first joint portion 216 in the first direction (the

clockwise direction).

When discharge step P3 is switched to discharge step

P4, the second vane 220 is further rotated in the first

direction (the clockwise direction).

When discharge step P3 is switched to discharge step

P4, the front end 222a of the second vane 220 is further

rotated in the first direction (the clockwise direction) due

to downward movement of the second vane link 220.

When discharge step P3 is switched to discharge step

P4, the first vane 210 and the second vane 220 are rotated

in the same direction.

When discharge step P3 is switched to discharge step

P4, the 1-1 vane link shaft 251 may be located further forwards than the 1-2 vane link shaft 252.

In discharge step P4, the vane motor 230 is rotated

100 degrees (P4 rotational angle), and the first vane 210

has an inclination of about 35.8 degrees (first vane P4

inclination) and the second vane 220 has an inclination of

about 70 degrees (second vane P4 inclination) by rotation of

the vane motor 230.

The positional relationship between the shafts forming

the centers of rotation of the respective links in discharge

] step P4 will be described.

In discharge step P4, the second joint portion 217 and

the first joint portion 216 of the first vane 210 are

disposed so as to be inclined forwards in the discharge

direction of air, similarly to P3.

When viewed from the side, the third joint portion 226

of the second vane 220 is disposed at the rearmost side, the

first joint portion 216 is disposed at the frontmost side,

and the second joint portion 217 is disposed between the

first joint portion 216 and the third joint portion 226.

In discharge step P4, the third joint portion 226 is

moved further downwards. In discharge step P4, the first

joint portion 216 of the first vane link 250 is slightly

moved upwards in the second direction (the counterclockwise

direction) or is located almost in place, and the second

joint portion 217 is rotated about the first joint portion

216 in the first direction (the clockwise direction).

When the first vane 210 is further rotated than in

discharge step P4, the first vane 210 is moved in the

direction opposite the advancing direction up to now. In

discharge step P1 to discharge step P4, the first vane 210

is moved in the discharge direction of air, and is rotated

about the second joint portion 217 in the first direction

(the clockwise direction).

In discharge step P4, the disposition of the shafts at

J the driving link 240, the first vane link 250, and the

second vane link 260 is similar to that in discharge step

P3. In discharge step P4, however, the second joint portion

217 and the first joint portion 216 are disposed in a line

in the longitudinal direction of the first driving link body

246.

Relative heights of the first driving link shaft 241,

the 1-1 vane link shaft 251, and the 2-1 vane link shaft 261

rotated by operation of the driving link 240, the first vane

link 250, and the second vane link 260 are varied.

In discharge step P4, the first driving link shaft 241

is moved upwards, and the 2-1 vane link shaft 261 is moved

downwards, whereby the first driving link shaft 241 is

located slightly higher than the 2-1 vane link shaft 261.

When discharge step P3 is switched to discharge step

P4, the second joint portion 217 is further rotated about the core link shaft 243 toward the 1-2 vane link shaft 252, and the core link shaft 243, the first driving link shaft

241, and the 1-1 vane link shaft 251, each of which is

formed in the shape of a straight line, may be disposed in a

line.

In discharge step P4, the 2-2 vane link journal 262 is

located lower than the core link shaft 243.

When discharge step P3 is switched to discharge step

P4, the 2-1 vane link shaft 261 is moved further rearwards

D than the 2-2 vane link journal 262.

On the basis of the suction panel 320 or the discharge

port 102, the position of the first vane 210 and the second

vane 220 in discharge step P4 is similar to that in

discharge step P3.

Next, relative positions and directions of the

respective links in discharge step P4 will be described.

When discharge step P3 is switched to discharge step

P4, the first vane link 250 and the second vane link 260 are

disposed so as to face in opposite directions. When

discharge step P3 is switched to discharge step P4, the

first vane link 250 is hardly rotated, and only the second

vane link 260 may be rotated rearwards.

In this embodiment, there is no separate construction

capable of limiting motion of the first vane link 250. In

this embodiment, motion of the first vane link 250 may be limited through the coupling relationship between the first vane link 250, the first vane 210, and the first driving link body 246.

In discharge step P4, the first driving link body 246

and the first vane link 250 are disposed so as to be

inclined forwards and downwards. In discharge step P4, the

second driving link body 247 is disposed so as to face

rearwards, and the second vane link 260 is disposed so as to

face rearwards and downwards.

D In this embodiment, when discharge step P3 is switched

to discharge step P4, Li-Li' of the first vane link 250 may

be further rotated in the discharge direction of air. When

discharge step P3 is switched to discharge step P4, L2-L2'

of the second vane link 260 is further rotated in the

direction opposite the discharge direction of air. When

discharge step P3 is switched to discharge step P4, D-D' of

the first driving link body 246 is further rotated in the

discharge direction of air. An imaginary straight line

joining the first joint portion 216 and the second joint

portion 217 to each other is defined as B-B'.

In discharge step P4, D-D' and B-B' are connected to

each other as a straight line, and have an angle of 180

degrees therebetween.

D-D' and B-B' have an angle of less than 180 degrees

therebetween in discharge step P1 to discharge step P3, an angle of less than 180 degrees therebetween in discharge step P4, and an angle of greater than 180 degrees therebetween in discharge step P5 and discharge step P5.

In discharge step P4, the driving link 240 may be

rotated in the second direction (in the counterclockwise

direction in the figures of this embodiment), which is

opposite the first direction, to provide discharge step P5.

In discharge step P5, the vane module 200 may provide

J inclined wind that is discharged further downwards than in

discharge step P4. In the state of the inclined wind of

discharge step P5, air is discharged further downwards than

in the state of the inclined wind of discharge step P4.

In discharge step P5, both the first vane 210 and the

second vane 220 are adjusted so as to face further downwards

than in discharge step P4.

In discharge step P5, the distance S5 between the

front end 222a of the second vane 220 and the rear end 212b

of the first vane 210 is greater than the distance S4 in

discharge step P4.

When discharge step P4 is switched to P5, the distance

between the front end 222a of the second vane 220 and the

rear end 212b of the first vane 210 further increases. In

discharge step P5, the first vane 210 and the second vane

220 are disposed further vertically than in P4.

When discharge step P4 is switched to discharge step

P5, the front end 222a of the second vane 220 is moved

further downwards, and the rear end 212b of the first vane

210 is moved further upwards.

In discharge step P5, the front end 222a of the second

vane 220 is located lower than in discharge step P4, and the

rear end 212b of the first vane 210 is located higher than

in discharge step P4.

When discharge step P4 is switched to discharge step

] P5, the second vane 220 is rotated in place about the second

vane shaft 221. When discharge step P4 is switched to

discharge step P5, the first joint portion 216 of the first

vane 210 stays almost in place, and the second joint portion

217 is further rotated about the first joint portion 216 in

the first direction (the clockwise direction).

That is, when discharge step P4 is switched to

discharge step P5, the first vane 210 is hardly moved, and

is rotated in place about the first joint 216.

When discharge step P4 is switched to discharge step

P5, the first vane 210 is further rotated about the first

joint portion 216 in the first direction (the clockwise

direction). When discharge step P4 is switched to discharge

step P5, the second vane 220 is further rotated in the first

direction (the clockwise direction).

When discharge step P4 is switched to discharge step

P5, the front end 222a of the second vane 220 is further

rotated in the first direction (the clockwise direction) due

to downward movement of the second vane link 220.

When discharge step P4 is switched to discharge step

P5, the first vane 210 and the second vane 220 are rotated

in the same direction.

When discharge step P4 is switched to discharge step

P5, the 1-1 vane link shaft 251 may be located further

forwards than the 1-2 vane link shaft 252.

] In discharge step P5, the vane motor 230 is rotated

105 degrees (P5 rotational angle), and the first vane 210

has an inclination of about 44.1 degrees (first vane P5

inclination) and the second vane 220 has an inclination of

about 72.3 degrees (second vane P5 inclination) by rotation

of the vane motor 230.

The positional relationship between the shafts forming

the centers of rotation of the respective links in discharge

step P5 will be described.

In discharge step P5, the second joint portion 217 and

the first joint portion 216 of the first vane 210 are

disposed so as to be inclined forwards in the discharge

direction of air, similarly to discharge step P4.

When viewed from the side, the third joint portion 226

of the second vane 220 is disposed at the rearmost side, the

first joint portion 216 is disposed at the frontmost side, and the second joint portion 217 is disposed between the first joint portion 216 and the third joint portion 226.

In discharge step P5, the third joint portion 226 is

moved further downwards, and the second joint portion 217 of

the first vane link 250 is rotated about the first joint

portion 216 in the first direction (the clockwise

direction).

In discharge step P5, the second joint portion 217 is

located so as to protrude toward the 1-2 vane link shaft 252

J on the basis of an imaginary straight line joining the core

link shaft 243 and the first joint portion 216 to each

other.

In discharge step P5, the disposition of the shafts at

the driving link 240, the first vane link 250, and the

second vane link 260 is similar to that in discharge step

P4.

Relative heights of the first driving link shaft 241,

the 1-1 vane link shaft 251, and the 2-1 vane link shaft 261

rotated by operation of the driving link 240, the first vane

link 250, and the second vane link 260 are varied.

When discharge step P4 is switched to discharge step

P5, the first driving link shaft 241 is moved upwards, and

the 2-1 vane link shaft 261 is moved downwards. In

discharge step P5, therefore, the first driving link shaft

241 is located slightly higher than the 2-1 vane link shaft

261.

When discharge step P4 is switched to discharge step

P5, the second joint portion 217 is rotated about the core

link shaft 243, and the second joint portion 217 is further

rotated toward the 1-2 vane link shaft 252.

In discharge step P5, the core link shaft 243, the

first driving link shaft 241, and the 1-1 vane link shaft

251 are disposed in a line. In discharge step P5, the core

link shaft 243, the first driving link shaft 241, and the 1

J 1 vane link shaft 251 form an obtuse angle of 180 degrees or

more (on the basis of D-D').

In discharge step P5, the 2-2 vane link journal 262 is

located lower than the core link shaft 243. When discharge

step P1 is switched to discharge step P6, the angle formed

by the core link shaft 243, the 2-2 vane link journal 262,

and the third joint portion 226 gradually increases.

When discharge step P1 is switched to discharge step

P6, however, the angle formed by the core link shaft 243,

the 2-2 vane link journal 262, and the third joint portion

226 is less than 180 degrees.

When discharge step P4 is switched to discharge step

P5, the 2-1 vane link shaft 261 is moved further rearwards

than the 2-2 vane link journal 262, and is located between

the third joint portion 226 and the core link shaft 243.

On the basis of the suction panel 320 or the discharge port 102, the position of the first vane 210 and the second vane 220 in discharge step P5 is similar to that in discharge step P4.

Next, relative positions and directions of the

respective links in discharge step P5 will be described.

When discharge step P4 is switched to discharge step

P5, the first vane link 250 and the second vane link 260 are

disposed so as to face in opposite directions. When

discharge step P4 is switched to discharge step P5, the

J first vane link 250 is hardly rotated, and only the second

vane link 260 may be further rotated rearwards.

In discharge step P5, the disposition of the first

driving link body 246, the first vane link 250, the second

vane link 260 is similar to that in discharge step P4.

In this embodiment, when discharge step P4 is switched

to discharge step P5, Li-Li' of the first vane link 250 may

be rotated in the direction opposite the discharge direction

of air. When discharge step P4 is switched to discharge

step P5, L2-L2' of the second vane link 260 is further

rotated in the direction opposite the discharge direction of

air. When discharge step P4 is switched to discharge step

P5, D-D' of the first driving link body 246 is rotated in

the discharge direction of air.

In discharge step P5, D-D' and B-B' have an obtuse

angle therebetween.

When discharge step P1 is switched to discharge step

P4, the front end 212a of the first vane is moved in the

discharge direction of air (forwards). When discharge step

P4 is switched to discharge step P6, however, the front end

212a of the first vane is moved in the direction opposite

the discharge direction of air (rearwards).

When discharge step P4 is switched to discharge step

P6, therefore, the first vane 210 may be disposed further

vertically.

In this embodiment, the state of the module vane 200

in discharge step P6 is defined as vertical wind.

The vertical wind does not mean that the first vane

210 and the second vane 220 constituting the module vane 200

are disposed vertically. This means that air discharged

from the discharge port 102 is discharged downwards from the

discharge port 102.

In discharge step P5, the driving link 240 may be

rotated in the second direction (in the counterclockwise

direction in the figures of this embodiment), which is

opposite the first direction, to provide discharge step P6.

In discharge step P6, the flow of the discharged air in the

horizontal direction is minimized, and the flow of the

discharged air in the vertical direction is maximized. In

the state of the vertical wind of discharge step P6 air is discharged further downwards than in the state of the inclined wind of discharge step P5.

In discharge step P6, both the first vane 210 and the

second vane 220 are adjusted so as to face further downwards

than in discharge step P5.

When providing discharge step P6, the rear end 222b of

the second vane is located higher than the discharge port,

the front end 222a of the second vane is located lower than

the discharge port, and the rear end 212b of the first vane

J is located higher than the front end 222a of the second vane

and is located higher than the discharge port. In addition,

the front end 212a of the first vane is located lower than

the front end 222a of the second vane.

When providing discharge step P6, the rear end 212b of

the first vane is disposed so as to face the discharge port

102.

In discharge step P6, the distance S6 between the

front end 222a of the second vane 220 and the rear end 212b

of the first vane 210 is greater than the distance S5 in

discharge step P5.

When discharge step P5 is switched to P6, the distance

between the front end 222a of the second vane 220 and the

rear end 212b of the first vane 210 further increases. In

discharge step P6, the first vane 210 and the second vane

220 are disposed further vertically than in P5.

When discharge step P5 is switched to discharge step

P6, the front end 222a of the second vane 220 is moved

further downwards, and the rear end 212b of the first vane

210 is moved further upwards.

In discharge step P6, the front end 222a of the second

vane 220 is located lower than in discharge step P5, and the

rear end 212b of the first vane 210 is located higher than

in discharge step P5.

When discharge step P5 is switched to discharge step

] P6, the second vane 220 is rotated in place about the second

vane shaft 221. When discharge step P5 is switched to

discharge step P6, the first joint portion 216 of the first

vane 210 stays almost in place, and the second joint portion

217 is further rotated about the first joint portion 216 in

the first direction (the clockwise direction).

That is, when discharge step P5 is switched to

discharge step P6, the first vane 210 may be moved

rearwards. When discharge step P5 is switched to discharge

step P6, the front end 212a of the first vane 210 is moved

rearwards, since the first vane 210 is further rotated about

the first joint portion 216 in the first direction (the

clockwise direction).

When discharge step P5 is switched to discharge step

P6, the second vane 220 is further rotated in the first

direction (the clockwise direction). When discharge step P5 is switched to discharge step P6, the front end 222a of the second vane 220 is further rotated in the first direction

(the clockwise direction) due to downward movement of the

second vane link 220.

When discharge step P5 is switched to discharge step

P6, the first vane 210 and the second vane 220 are rotated

in the same direction.

In discharge step P6, the vane motor 230 is rotated

110 degrees (P6 rotational angle), and the first vane 210

D has an inclination of about 56.7 degrees (first vane P6

inclination) and the second vane 220 has an inclination of

about 74 degrees (second vane P6 inclination) by rotation of

the vane motor 230.

The positional relationship between the shafts forming

the centers of rotation of the respective links in discharge

step P6 will be described.

In discharge step P6, the second joint portion 217 and

the first joint portion 216 of the first vane 210 are

disposed so as to be inclined forwards in the discharge

direction of air, similarly to discharge step P5.

When viewed from the side, the third joint portion 226

of the second vane 220 is disposed at the rearmost side, the

first joint portion 216 is disposed at the frontmost side,

and the second joint portion 217 is disposed between the

first joint portion 216 and the third joint portion 226.

In discharge step P6, the third joint portion 226 is

moved further downwards, and the second joint portion 217 of

the first vane link 250 is rotated about the first joint

portion 216 in the first direction (the clockwise

direction).

In discharge step P6, the second joint portion 217 is

located so as to further protrude toward the 1-2 vane link

shaft 252 on the basis of an imaginary straight line joining

the core link shaft 243 and the first joint portion 216 to

D each other.

In discharge step P6, the disposition of the shafts at

the driving link 240, the first vane link 250, and the

second vane link 260 is similar to that in discharge step

P5.

Relative heights of the first driving link shaft 241,

the 1-1 vane link shaft 251, and the 2-1 vane link shaft 261

rotated by operation of the driving link 240, the first vane

link 250, and the second vane link 260 are varied.

When providing discharge step P6, the rear end 212b of

the first vane is located at the lower side of the core link

shaft 243, and is located further forwards than the core

link shaft 243. When providing discharge step P6, the front

end 212a of the first vane is located further rearwards than

the front edge 102a of the discharge port.

When discharge step P5 is switched to discharge step

P6, the first driving link shaft 241 is moved upwards, and

the 2-1 vane link shaft 261 is moved downwards. In

discharge step P6, therefore, the first driving link shaft

241 is located higher than the 2-1 vane link shaft 261.

When providing discharge step P6, the 2-2 vane link

journal 262 is located lower than the core link shaft 243,

the first driving link shaft 241 is located lower than the

2-2 vane link journal 262, the 2-1 vane link shaft 261 is

located lower than the first driving link shaft 241, and the

J 1-1 vane link shaft 251 is located lower than the 2-1 vane

link shaft 261.

When discharge step P5 is switched to discharge step

P6, the second joint portion 217 is rotated about the core

link shaft 243, and the second joint portion 217 is further

rotated toward the 1-2 vane link shaft 252.

When viewed from the side, in discharge step P6, at

least a portion of the second joint portion 217 may overlap

the first vane link body 255. Since the second joint

portion 217 is moved to the position at which the second

joint portion overlaps the first vane link body 255, it is

possible to further vertically dispose the first vane 210.

In discharge step P6, however, the second joint

portion 217 is not moved forwards over Li-Li'. The second

joint portion 217 is not moved further forwards than the

first vane link body 255. In the case in which the second joint portion 217 is excessively moved forwards, the second joint portion may not return to the original position thereof even when the vane motor is rotated in the first direction (the clockwise direction).

In order to prevent excessive rotation of the driving

link 240, the first driving link body 246 and one end 270a

of the stopper 270 interfere with each other in discharge

step P6. The first driving link body 246 is supported by

the stopper 270, whereby further rotation of the driving

D link is limited.

In discharge step P6, the core link shaft 243, the

first driving link shaft 241, and the 1-1 vane link shaft

251 form an obtuse angle of 180 degrees or more (the

clockwise direction on the basis of D-D').

When discharge step P5 is switched to discharge step

P6, the 1-1 vane link shaft 251 may be located further

forwards than the 1-2 vane link shaft 252.

In discharge step P6, the 2-2 vane link journal 262 is

located at the lower side of the core link shaft 243, the

second joint portion 217 is located at the lower side of the

2-2 vane link journal 262, the third joint portion 226 is

located at the lower side of the second joint portion 217,

and the first joint portion 216 is located at the lower side

of the third joint portion 226.

When discharge step P5 is switched to discharge step

P6, the 2-1 vane link shaft 261 is moved further rearwards

than the 2-2 vane link journal 262, and is located between

the third joint portion 226 and the core link shaft 243.

Next, relative positions and directions of the

respective links in discharge step P6 will be described.

When discharge step P5 is switched to discharge step

P6, the first vane link 250 and the second vane link 260 are

disposed so as to face in opposite directions. When

discharge step P5 is switched to discharge step P6, the

J first vane link 250 is hardly rotated, and only the second

vane link 260 may be further rotated rearwards.

In discharge step P6, the disposition of the first

driving link body 246, the first vane link 250, the second

vane link 260 is similar to that in discharge step P5.

When providing discharge step P6, the 2-1 vane link

shaft 261 is located further forwards than the second vane

shaft 221, the 2-2 vane link journal 262 is located further

forwards than the 2-1 vane link shaft 261, the core link

shaft 243 is located further forwards than the 2-2 vane link

journal 262, the first driving link shaft 241 is located

further forwards than the core link shaft 243, and the 1-1

vane link shaft 251 is located further forwards than the

first driving link shaft 241

In this embodiment, when discharge step P5 is switched

to discharge step P6, Li-Li' of the first vane link 250 may be further rotated in the direction opposite the discharge direction of air. When discharge step P5 is switched to discharge step P6, L2-L2' of the second vane link 260 is further rotated in the direction opposite the discharge direction of air. When discharge step P5 is switched to discharge step P6, D-D' of the first driving link body 246 is further rotated in the direction opposite the discharge direction of air.

In discharge step P6, the angle between D-D' and B-B',

J which is an obtuse angle, is greater than the angle between

D-D' and B-B', which is an obtuse angle, in discharge step

P5.

When discharge step P1 is switched to discharge step

P4, the front end 212a of the first vane is moved in the

discharge direction of air (forwards).

When discharge step P1 is switched to discharge step

P4, the first vane link 250 is rotated in the second

direction (the counterclockwise direction). When discharge

step P4 is switched to discharge step P6, however, the first

vane link 250 is rotated in the first direction (the

clockwise direction).

When discharge step P1 is switched to discharge step

P4, therefore, the front end 212s of the first vane is

rotated in the second direction and is moved upwards. When

discharge step P4 is switched to discharge step P6, however, the front end 212s of the first vane is rotated in the first direction and is moved downwards. That is, motion of the first vane 210 is changed on the basis of discharge step P4.

When discharge step P4 is switched to discharge step

P6, the first vane 210 may be disposed further vertically.

In discharge step P6, the rear end 212b of the first vane

210 is located further forwards than the core link shaft

243.

When the vane module 200 forms the vertical wind in

D the discharge step P6, the first vane 210 and the second

vane 220 are maximally spaced apart from each other.

In discharge step P6, at least one of the second joint

portion 217 or the first drive link shaft 241 overlaps the

first vane link 250, when viewed from the side of the vane

module 200.

In discharge step P6, at least one of the second joint

portion 217 or the first drive link shaft 241 is located on

or behind Li-Li of the first vane link 250, when viewed from

the side of the vane module 200.

In discharge step P6, the rear end 212b of the first

vane 210 is located inside the discharge port 102 and is

located higher than the outer surface of the side cover 314,

when viewed from the side of the vane module 200. Since the

rear end 212b of the first vane 210 is located inside the

discharge port 102, it is possible to guide air discharged from the discharge port 102 in the vertical direction.

In discharge step P1, a vane angle formed between the

first vane 210 and the second vane 220 is 139.7 degrees.

Here, the vane angle may refer to an inclination angle

formed between a line, to which a virtual straight line

connecting both ends 212a and 212b of the first vane 210

extends, and a line, to which a virtual straight line

connecting both ends 222a and 222b of the second vane 220

extends. In discharge step P2, a vane angle formed between

D the first vane 210 and the second vane 220 is 139.5 degrees.

In discharge step P3, a vane angle formed between the first

vane 210 and the second vane 220 is 142.3 degrees. In

discharge step P4, a vane angle formed between the first

vane 210 and the second vane 220 is 145.8 degrees. In

discharge step P5, a vane angle formed between the first

vane 210 and the second vane 220 is 151.8 degrees. In

discharge step P6, a vane angle formed between the first

vane 210 and the second vane 220 is 162.7 degrees.

A fast indirect wind mode of the ceiling type indoor

unit according to this embodiment at the time of cooling

will be described with reference to FIGS. 1 to 4, 15, and

23.

The ceiling type indoor unit according to this

embodiment includes a first vane module 201 disposed at the edge of the suction port 101 based on the suction port 101, a third vane module 203 disposed at the edge of the suction port 101, the third vane module being disposed opposite the first vane module 201 based on the suction port 101, a third vane module 202 disposed at the edge of the suction port

101, the third vane module being disposed to form an angle

of 90 degrees together with each of the first vane module

201 and the third vane module 203 based on the suction port

101, and a fourth vane module 204 disposed at the edge of

D the suction port 101, the fourth vane module being disposed

opposite the second vane module 202 based on the suction

port 101.

When viewed in a bottom view, the indoor unit includes

a first vane module 201 disposed at the edge of the suction

port 101, the first vane module being disposed in the 12

o'clock direction based on the suction port 101, a second

vane module 202 disposed at the edge of the suction port

101, the second vane module being disposed in the 3 o'clock

direction based on the suction port 101, a third vane module

203 disposed at the edge of the suction port 101, the third

vane module being disposed in the 6 o'clock direction based

on the suction port 101, and a fourth vane module 204

disposed at the edge of the suction port 101, the fourth

vane module being disposed in the 9 o'clock direction based

on the suction port 101.

For convenience of description, the discharge port at

which the first vane module 201 is disposed is defined as a

first discharge port 102-1, the discharge port at which the

second vane module 202 is disposed is defined as a second

discharge port 102-2, the discharge port at which the third

vane module 203 is disposed is defined as a third discharge

port 102-3, and the discharge port at which the fourth vane

module 204 is disposed is defined as a fourth discharge port

102-4.

J When viewed in a bottom view, the first vane module

201 is disposed in the 12 o'clock direction and discharges

air in the 12 o'clock direction, the second vane module 202

is disposed in the 3 o'clock direction and discharges air in

the 3 o'clock direction, the third vane module 203 is

disposed in the 6 o'clock direction and discharges air in

the 6 o'clock direction, and the fourth vane module 204 is

disposed in the 9 o'clock direction and discharges air in

the 9 o'clock direction.

When viewed in a bottom view, the air discharge

directions of the first vane module 201 and the third vane

module 203 are opposite each other. The air discharge

directions of the second vane module 202 and the fourth vane

module 204 are opposite each other.

When viewed in a bottom view, the air discharge

direction of the first vane module 201 is perpendicular to the air discharge directions of the second vane module 202 and the fourth vane module 204. The air discharge direction of the third vane module 203 is perpendicular to the air discharge directions of the second vane module 202 and the fourth vane module 204.

The air discharge direction of the first vane module

201 is defined as a first discharge direction 291, the air

discharge direction of the second vane module 202 is defined

as a second discharge direction 292, the air discharge

J direction of the third vane module 203 is defined as a third

discharge direction 293, and the air discharge direction of

the fourth vane module 204 is defined as a fourth discharge

direction 294.

The fast indirect wind mode rapidly solves an indoor

load when the indoor load is large, and provides indirect

wind when the indoor load is small.

Conventionally, when the indoor unit is operated in a

power mode, a target temperature is set to the minimum

temperature (generally, 18 degrees), and the indoor blowing

fan is maximally operated to supply discharged air into the

room at the maximum wind speed. Conventionally, direct wind

is provided even when the indoor load is solved, whereby a

person in a room may feel discomfort.

In the fast indirect wind mode according to this

embodiment, when the indoor load is large, the target temperature is set to the minimum temperature (generally, 18 degrees), the indoor blowing fan is maximally operated, and each vane module is controlled in order to generate air flow in the room, whereby it is possible to more rapidly reduce indoor temperature.

In the fast indirect wind mode according to this

embodiment, switching to indirect wind, which is not

directly exposed to the person in the room, is performed

when the indoor load is small.

A method of controlling the ceiling type indoor unit

according to the present disclosure performs control such

that two pairs of vane modules discharge air in different

directions in pairs.

In particular, a pair of a first vane module 201 and a

third vane module 203 and another pair of a second vane

module 202 and a fourth vane module 204 discharge air in

different directions.

When viewed in a bottom view, the first vane module

201, the second vane module 202, the third vane module 203,

and the fourth vane module 204 are disposed at intervals of

90 degrees based on the suction port 101.

When viewed in a bottom view, based on the suction

port 101, the discharge direction of the first vane module

201 and the discharge direction of the second vane module

202 have an angle of 90 degrees therebetween, the discharge direction of the second vane module 202 and the discharge direction of the third vane module 203 have an angle of 90 degrees therebetween, the discharge direction of the third vane module 203 and the discharge direction of the fourth vane module 204 have an angle of 90 degrees therebetween, and the discharge direction of the fourth vane module 204 and the discharge direction of the first vane module 201 have an angle of 90 degrees therebetween.

When viewed in a bottom view, the first vane module

J 201 and the third vane module 203 are located opposite each

other based on the suction port 101. When viewed in a

bottom view, the second vane module 202 and the third vane

module 204 are located opposite each other based on the

suction port 101.

In this embodiment, the first vane module 201 and the

third vane module 203 disposed so as to face each other

based on the suction port 101 are defined as a first

discharge pair, and the second vane module 202 and the

fourth vane module 204 are defined as a second discharge

pair.

Hereinafter, a rapid indirect wind mode in cooling

operation will be described by way of example.

The method of controlling the ceiling type indoor unit

according to this embodiment includes a step (S12) of

turning on a rapid indirect wind mode, a load determination step (S15) of comparing an indoor load with a cooling setting load after step S12, a first dynamic cooling step

(S40) of operating the first discharge pair in discharge

step P2 and operating the second discharge pair in a power

cooling discharge step in the case in which the load

determination step (S15) is satisfied, and a step (S50) of

determining whether the first dynamic cooling step (S40)

exceeds a first dynamic time (5 minutes in this embodiment).

In addition, the method of controlling the ceiling

] type indoor unit according to this embodiment further

includes a first auto swing step (S60) of simultaneously

operating the first discharge pair and the second discharge

pair in the case in which step S50 is satisfied and a step

(S70) of determining whether the first auto swing step (S60)

exceeds a first auto time (5 minutes in this embodiment).

In addition, the method of controlling the ceiling

type indoor unit according to this embodiment further

includes a second dynamic cooling step (S80) of operating

the first discharge pair in the power cooling discharge step

and operating the second discharge pair in discharge step

P2, in the opposite manner to step S40, in the case in which

step S70 is satisfied and a step (S90) of determining

whether the second dynamic cooling step (S80) exceeds a

second dynamic time (5 minutes in this embodiment).

In addition, the method of controlling the ceiling type indoor unit according to this embodiment further includes a second auto swing step (SlO) of simultaneously operating the first discharge pair and the second discharge pair in the case in which step S90 is satisfied, a step

(S110) of determining whether the second auto swing step

(SlO) exceeds a second auto time (5 minutes in this

embodiment), a step (S120) of determining whether the rapid

indirect wind mode is turned off in the case in which step

S110 is satisfied, and a step of finishing the rapid

D indirect wind mode in the case in which step S120 is

satisfied.

A user may select the rapid indirect wind mode using a

wireless remote controller (not shown) or a wired remote

controller (not shown) (S12). In this embodiment, the rapid

indirect wind mode is selected by the user. Unlike this

embodiment, however, the rapid indirect wind mode may be

automatically executed under a specific condition. For

example, when the indoor unit is switched from an off state

to an on state, the rapid indirect wind mode may be

automatically executed.

In the load determination step (S15), a controller

determines an indoor load and a cooling setting load. In

this embodiment, the indoor load is calculated as the

temperature difference between a target temperature and an

indoor temperature, and the cooling setting load is 3 degrees.

That is, in the case in which the temperature

difference between the target temperature set by the user

and the indoor temperature is 3 degrees or more, it is

determined that the load determination step (S15) is

satisfied.

In the case in which the temperature difference is

less than 3 degrees, it is determined that the load

determination step (S15) is not satisfied. In this

J embodiment, the temperature difference is set to 3 degrees.

However, the temperature difference may be 2 degrees, and

may be variously changed depending on circumstances.

In the case in which the load determination step (S15)

is satisfied, step S40 is performed.

In the case in which the load determination step (S15)

is not satisfied, step S200 is performed.

Step S200 is an indirect wind provision step. In the

case in which the load determination step (S15) is not

satisfied, it is determined that the indoor load is not

large. In the case in which the indoor load is not large,

it is preferable to provide indirect wind to the person in

the room, rather than direct wind.

The reason for this is that, in the case in which cold

direct wind is directly supplied to the person in the room,

the person in the room may feel the cold. Step S200 is configured to provide indirect wind to the person in the room. In this embodiment, discharge step P2 is set.

That is, in the case in which the load determination

step (S15) is not satisfied, all of the first vane module,

the second vane module, the third vane module, and the

fourth vane module are set to be operated in discharge step

P2 (S200). In this embodiment, discharge step P2 is set in

order to provide indirect wind. Unlike this embodiment,

however, discharge step P1 may be set.

D Both discharge steps P1 and P2 provide wind

approximate to horizontal wind. Discharged air flows along

the ceiling of the room, flows downwards toward the floor

after colliding with the wall of the room, and returns to

the indoor unit after colliding with the floor.

After the indirect wind provision step (S200), a step

(S210) of determining an indirect wind operation time is

further performed. In the case in which step S210 is

satisfied, step S120 is performed. In the case in which

step S210 is not satisfied, the procedure returns to step

S200.

The wind amount in the indirect wind provision step

(S200) is different from the wind amount in steps S40 to

Silo.

Since steps S40 to S110 are performed when the indoor

load is large, the indoor blowing fan is operated to provide strong wind or the maximum wind amount.

Since the indirect wind provision step (S200) is

performed when the indoor load is small, however, this step

does not need to be operated to provide the wind amount

corresponding to that in steps S40 to S110. The indirect

wind provision step (S200) may be performed to provide the

wind amount previously set by the user. The default wind

amount of the indirect wind provision step (S200) may be to

medium, among large, medium, and small.

Meanwhile, in this embodiment, the first discharge

pair and the second discharge pair are operated in the

sequence of different operations -> same operation ->

different operations -> same operation.

In this embodiment, the first discharge pair is

operated in the sequence of discharge step P2 (S40) -> first

auto swing (S60) -> power cooling discharge step P4.5 (S80)

-> second auto swing (SlO).

In this embodiment, the second discharge pair is

operated in the sequence of power cooling discharge step

P4.5 (S40) -> first auto swing (S60) -> discharge step P2

(S80) -> second auto swing (S100).

The first vane module, the second vane module, the

third vane module, and the fourth vane module may be set to

be operated in one of discharge steps P1 to P6.

Based on the horizon, the inclination of the first vane satisfies "0 degrees < inclination of the first vane in discharge step P1 < inclination of the first vane in discharge step P2 < inclination of the first vane in discharge step P3 < inclination of the first vane in discharge step P4 < inclination of the first vane in discharge step P5 < inclination of the first vane in discharge step P6 < 90 degrees."

Based on the horizon, the inclination of the second

vane satisfies "0 degrees < inclination of the second vane

D in discharge step P1 < inclination of the second vane in

discharge step P2 < inclination of the second vane in

discharge step P3 < inclination of the second vane in

discharge step P4 < inclination of the second vane in

discharge step P5 < inclination of the second vane in

discharge step P6 < 90 degrees."

In each discharge step, the inclination of the second

vane is set to always be greater than the inclination of the

first vane.

A user may select the rapid indirect wind mode using a

wireless remote controller (not shown) or a wired remote

controller (not shown) (S10). In this embodiment, the rapid

indirect wind mode is selected by the user. Unlike this

embodiment, however, the rapid indirect wind mode may be

automatically executed under a specific condition. For

example, when the indoor unit is switched from an off state to an on state, the rapid indirect wind mode may be automatically executed.

In this embodiment, when the user selects a power mode

using the wireless remote controller, the rapid indirect

wind mode may be set. When the user selects power cooling

using the wired remote controller, the rapid indirect wind

mode may be set.

Step S40 is a first dynamic cooling step.

In a first dynamic cooling step (S40), the second vane

D 220, being disposed at each of a first discharge port 102-1

and a third discharge port 102-3 forming a first discharge

pair disposed in a first position, in which a front end 222a

(end of a front side) of the second vane 220 is directed to

a rear end 212b (end of the rear side) of the first vane 210

or a lower side of the first vane 210, and the second vane

220 forms a first vane angle with the first vane 210. Here,

the first vane angle may refer to a vane angle formed

between the first vane 210 and the second vane 220 in

discharge steps P1 and P2. Further, in the first dynamic

cooling step (S40), the second vane 220, being disposed at

each of a second discharge port 102-2 and a fourth discharge

port 102-4 forming a second discharge pair is disposed in a

second position, in which a front end 222a (end of a front

side) of the second vane 220 is directed to a rear end 212b

(end of the rear side) of the first vane 210 or a lower side of the rear end 212b of the first vane 210, and the second vane 220 forms a second vane angle, different from the first vane angle, with the first vane 210. Here, the second vane angle may refer to a vane angle formed between the first vane 210 and the second vane 220 in discharge steps P3 to P6 including a power heating angle. The first vane angle, formed between the first vane 210 and the second vane 220 in the first position, is in a range of 139.5 degrees to 139.7 degrees; and the second vane angle, formed between the first

J vane 210 and the second vane 220 in the second position, is

in a range of 142.3 to 162.7 degrees. The first vane angle,

formed between the first vane 210 and the second vane 220 in

the first position, is less than the second vane angle

formed between the first vane 210 and the second vane 220 in

the second position. In the first position, the second vane

220 guides air, discharged from the discharge port, to move

along an upper side of the first vane 210. In the first

position, the first vane 210 is spaced apart downwardly from

the discharge ports. In the first position, an inclination

angle formed between the first vane 210 and a virtual

horizontal line is in a range of 20 degrees or less. In the

second position, the rear end of the first vane 210 is

disposed to be directed to a rear end of the second vane 220

or an upper side of the second vane 220.

In the first dynamic cooling step (S40), the first discharge pair and the second discharge pair are operated in different manners.

In this embodiment, in the first dynamic cooling step

(S40), the first discharge pair is set to be operated in

discharge step P2, and the second discharge pair is set to

be operated in the power cooling discharge step.

In the first dynamic cooling step (S40), the first

discharge pair is changed to be operated in discharge step

P2, and then the state thereof is maintained. In the first

J dynamic cooling step (S40), the second discharge pair is

changed to be operated in the power cooling discharge step,

and then the state thereof is maintained.

Discharge step P2 may send discharged air the farthest

except for horizontal wind (discharge step P1). Discharge

step P2 may provide indirect wind to the user.

In contrast, the second discharge pair provides direct

wind in which cooled air is directly provided to the user.

The power cooling discharge step may be one of discharge

steps P3 to P6, in which the second discharge pair is

disposed further vertically than in discharge step P2.

Preferably, the power cooling discharge step is

between discharge steps P4 to P6. In order to rapidly cool

indoor air, discharged air is preferably provided as

inclined wind, rather than horizontal wind or vertical wind.

In particular, the first discharge pair provides indirect wind approximate to horizontal wind, and therefore the first discharge pair provides discharged air over a long distance, and the second discharge pair provides discharged air over a short distance.

In the power cooling discharge step, the inclination

of the first vane may be set to 35 degrees to 57 degrees.

In this embodiment, a separate discharge step is

disposed between discharge steps ranging from discharge

steps P4 to P6 instead of the power cooling discharge step

] being selected as one of discharge steps P1 to P6.

Therefore, discharge step P4.5 is disposed between discharge

steps P4 and P5, and is defined as a power cooling discharge

step.

Unlike this embodiment, discharge step P4 or P5 may be

selected as the power cooling discharge step. The reason

that discharge step P4 or P5 is selected is that this

discharge step is a discharge step greatly different in air

discharge direction from discharge step P2, among discharge

steps that do not provide horizontal wind and vertical wind.

In power cooling discharge step 4.5, the vane motor

230 is rotated 102 degrees (P4.5 rotational angle). The

first vane 210 and the second vane 220 have an inclination

between discharge steps P4 and P5 by rotation of the vane

motor 230. Consequently, the first vane 210 has an

inclination of 35 degrees to 44 degrees, and the second vane

210 has an inclination of about 70 degrees to 72 degrees.

In the first dynamic cooling step (S40), the vane

motor 230 of the first discharge pair is rotated 78 degrees

(P2 rotational angle), and the vane motor of the second

discharge pair is rotated 102 degrees (P4.5 rotational

angle).

In step S40, the first discharge pair provides

inclined wind approximate to horizontal wind, whereby

discharged air is provided over a long distance. The second

D discharge pair, which is disposed so as to be perpendicular

to the discharge direction of the first discharge pair,

provides inclined wind, whereby discharged air is provided

over a short distance.

For example, in the first dynamic cooling step (S40),

when the first discharge pair supplies air to a place far

from the indoor unit in discharge step P2, cooled air is

discharged at a gentle angle, and the discharged air slowly

moves downwards due to the difference in density from indoor

air. In the case in which the air discharged from the first

discharge pair slowly moves downwards and reaches a place

far from the indoor unit, indoor air is pushed by the cooled

discharged air and thus moves outwards.

In the first dynamic cooling step (S40), when the

first discharge pair supplies discharged air as indirect

wind in discharge step P2, the second discharge pair moves cooled air from the side close to the indoor unit to the side far from the indoor unit in power cooling discharge step 4.5. At this time, the air discharged from the second discharge pair is directed to the floor, compared to the first discharge pair. Consequently, the discharged air reaches the portion of the floor that is close to the indoor unit, and then moves to the portion of the floor that is far from the indoor unit along the floor. In the case in which the air discharged from the second discharge pair slowly

J moves downwards and reaches a place far from the indoor

unit, indoor air is pushed by the cooled discharged air and

thus moves outwards.

In the case in which the first discharge pair provides

the discharged air over a long distance and the second

discharge pair, which is disposed so as to be perpendicular

thereto, provides the discharged air over a short distance,

as described above, it is possible to accelerate circulation

of the indoor air. That is, in the case in which the

distance difference and the height difference are formed

when the discharged air is discharged in different

directions, it is possible to more rapidly mix the cooled

air and the indoor air with each other.

In the case in which the cooled discharged air is

supplied in the first dynamic cooling step (S40), therefore,

deviation in temperature around the indoor unit may occur.

In particular, temperature deviation depending on the

vertical height as well as temperature deviation depending

on the horizontal distance based on the indoor unit may

greatly occur. In addition, temperature deviation between

the first discharge pair direction and the second discharge

pair direction may also greatly occur.

This is a natural phenomenon that occurs since the

first discharge pair and the second discharge pair are

different in purpose from each other in the first dynamic

D cooling step (S40). In order to solve this, the first auto

swing step (S60) is performed.

In step S50, operation time of step S40 is determined.

In the case in which step S50 is satisfied, step S60 is

performed. In the case in which step S50 is not satisfied,

the procedure returns to step S40.

Step S60 is a first auto swing step. The first auto

swing step (S60) is performed based on an auto swing cycle.

In the auto swing step, the first vane 210 and the second

vane 220 may reciprocate in a region including the first

position and the second position.

In the first auto swing step (S60), each of the first

vane module 201, the second vane module 202, the third vane

module 203, and the fourth vane module 204 operates the vane

motor 230 such that the discharge step is sequentially

changed in the sequence of discharge step P2 -> discharge step P3 -> discharge step P4 -> discharge step P5 and is then sequentially changed in reverse order, i.e. in the sequence of discharge step P5 -> discharge step P6 -> discharge step P3 -> discharge step P2.

Discharge step P1 and discharge step P6 are also

omitted from the auto swing cycle of the first auto swing

step (S60). The operation time of the first auto swing step

(S60) is set to a first auto time (5 minutes in this

embodiment). In this embodiment, the operation time of the

J first auto swing step (S60) is equal to the first dynamic

time.

The first auto swing step (S60) discharges cooled air

to the surroundings of the indoor unit while performing

reciprocation over discharge steps ranging from discharge

step P2 to discharge step P5, and the cooled air is randomly

mixed with indoor air. The first auto swing step (S60) has

the effects of randomly mixing cooled discharged air with

indoor air and more rapidly equalizing temperature of all

indoor air.

The first auto swing step (S60) solves temperature

deviation occurring in the first dynamic cooling step (S40).

When step S70 is satisfied, step S80 is performed.

When step S70 is not satisfied, the procedure returns to

step S60.

Step S80 is a second dynamic cooling step. In the second dynamic cooling step (S80), the first vane 210 and the second vane 220, being disposed at each of the first discharge port 102-1 and the third discharge port 102-3, are disposed in the second position, and the first vane 210 and the second vane 220, being disposed at each of the second discharge port 102-2 and the fourth discharge port 102-4, are disposed in the first position.

In the second dynamic cooling step (S80), the first

discharge pair and the second discharge pair are operated in

D the opposite manner to the first dynamic cooling step (S40).

In the second dynamic cooling step (S80), therefore, the

first discharge pair is set to be operated in the power

cooling discharge step, and the second discharge pair is set

to be operated in discharge step P2.

In the second dynamic cooling step (S80), the first

discharge pair is changed to be operated in the power

cooling discharge step, and then the state thereof is

maintained. In the second dynamic cooling step (S80), the

second discharge pair is changed to be operated in discharge

step P2, and then the state thereof is maintained.

In the opposite manner to the first dynamic cooling

step (S40), the second dynamic cooling step (S80) provides

direct wind through the first discharge pair, and provides

indirect wind through the second discharge pair.

In this embodiment, the power cooling discharge step of the second dynamic cooling step (S80) is discharge step

P4.5.

In the second dynamic cooling step (S80), the vane

motor 230 of the first discharge pair is rotated 102 degrees

(P4.5 rotational angle), and the vane motor of the second

discharge pair is rotated 78 degrees (P2 rotational angle).

It is possible to more effectively mix air in the

indoor space by alternately performing the first dynamic

cooling step (S40) and the second dynamic cooling step

J (S80). In addition, it is possible to minimize a dead zone

that indoor air does not reach by alternately performing the

first dynamic cooling step (S40) and the second dynamic

cooling step (S80).

In particular, since the first dynamic cooling step

(S40) and the second dynamic cooling step (S80) alternately

provide indirect wind and direct wind, it is possible to

minimize a dead zone that indoor air does not reach.

For example, in the first dynamic cooling step (S40),

the first discharge pair discharges air to a place far from

the indoor unit in discharge step P2. Subsequently, in the

second dynamic cooling step (S80), the first discharge pair

discharges air to a place close to the indoor unit in power

cooling discharge step P4.5. When the air is discharged, as

described above, it is possible to minimize a dead zone in

the discharge direction of the first vane module 201 and the third vane module 203.

In addition, when the first discharge pair is

operated, the second discharge pair is operated reversely.

The second discharge pair discharges air to a place close to

the indoor unit in the first dynamic cooling step (S40), and

discharges air to a place far from the indoor unit in the

second dynamic cooling step (S80). When the air is

discharged, as described above, it is possible to minimize a

dead zone in the discharge direction of the second vane

D module 202 and the fourth vane module 204.

For example, in the second dynamic cooling step (S80),

the first discharge pair moves cooled air from the side

close to the indoor unit to the side far from the indoor

unit in discharge step P4.5. At this time, the air

discharged from the first discharge pair is directed to the

floor. Consequently, the discharged air reaches the portion

of the floor that is close to the indoor unit, and moves to

the portion of the floor that is far from the indoor unit

along the floor. In the case in which the air discharged

from the first discharge pair slowly moves upwards and

reaches a place far from the indoor unit, indoor air is

pushed by the cooled discharged air and thus moves outwards.

In the case in which the second discharge pair

supplies air to a place far from the indoor unit in the

discharge step P2, cooled air is discharged at a gentle angle, and the discharged air slowly moves downwards due to the difference in density from indoor air. In the case in which the air discharged from the second discharge pair slowly moves upwards and reaches a place far from the indoor unit, indoor air is pushed by the cooled discharged air and thus moves outwards.

Since cooled air is alternately supplied to a place

close to the indoor unit and a place far from the indoor

unit in the horizontal direction in the first dynamic

D cooling step (S40) and the second dynamic cooling step

(S80), as described above, it is possible to effectively mix

indoor air.

In addition, since cooled air is alternately supplied

to the higher side and the lower side in the vertical

direction in the first dynamic cooling step (S40) and the

second dynamic cooling step (S80), it is possible to

effectively mix indoor air.

In step S90, whether the second dynamic time (5

minutes in this embodiment) has elapsed is determined. In

the case in which step S90 is satisfied, step S100 is

performed. In the case in which step S90 is not satisfied,

the procedure returns to step S80.

The second auto swing step (SlO) is identical to the

first auto swing step (S60), and therefore a detailed

description thereof will be omitted. Step S110 is also identical to step S70, and therefore a detailed description thereof will be omitted. In this embodiment, the first auto time of step S70 is equal to the second auto time of step

Silo.

The first dynamic time and the second dynamic time may

be set to be equal to each other, whereby it is possible to

uniformly form the temperature of air around the indoor

unit. In the case in which the first dynamic time and the

second dynamic time are set to be different from each other,

J the temperature of air discharged from the first discharge

pair or the second discharge pair may be lower. In

addition, the first auto time and the second auto time may

be set to be equal to each other, and temperature around the

indoor unit may be more uniformly formed.

In step S120, whether the rapid indirect wind mode is

turned off is determined. Since step S10 is performed based

on a manipulation signal input by the user in this

embodiment, whether the user has input a rapid indirect wind

mode off signal is determined in step S120.

In this embodiment, even when the user inputs the

rapid indirect wind mode off signal before step S120, this

is determined in step S120 after step Silo. Unlike this

embodiment, step S120 may be disposed between steps ranging

from step S10 to step Silo, and step S120 may be performed

after each step is finished. In this case, when the user inputs the rapid indirect wind mode off signal, the rapid indirect wind mode may be finished immediately after the step that is being performed is finished.

In the case in which step S120 is not satisfied (in

the case in which the user does not input the rapid indirect

wind mode off signal), the procedure returns to step S15.

A method of controlling a ceiling type indoor unit

according to a second embodiment of the present disclosure

at the time of cooling will be described with reference to

J FIG. 24.

The method of controlling the ceiling type indoor unit

according to this embodiment includes a step (S12) of

turning on a rapid indirect wind mode, a load determination

step (S15) of comparing an indoor load with a cooling

setting load after step S12, a first dynamic cooling step

(S40) of operating the first discharge pair in discharge

step P2 and operating the second discharge pair in a power

cooling discharge step in the case in which the load

determination step (S15) is satisfied, and a step (S50) of

determining whether the first dynamic cooling step (S40)

exceeds a first dynamic time (5 minutes in this embodiment).

In addition, the method of controlling the ceiling

type indoor unit according to this embodiment further

includes a second dynamic cooling step (S80) of operating

the first discharge pair in the power cooling discharge step and operating the second discharge pair in discharge step

P2, in the opposite manner to step S40, in the case in which

step S50 is satisfied and a step (S90) of determining

whether the second dynamic cooling step (S80) exceeds a

second dynamic time (5 minutes in this embodiment).

In addition, the method of controlling the ceiling

type indoor unit according to this embodiment further

includes a step (S120) of determining whether the rapid

indirect wind mode is turned off in the case in which step

J S90 is satisfied and a step of finishing the rapid indirect

wind mode in the case in which step S120 is satisfied.

The first discharge pair and the second discharge pair

are operated in the sequence of different operations ->

different operations.

In this embodiment, therefore, the first discharge

pair is operated in the sequence of discharge step P2 (S40)

-> power cooling discharge step P4.5 (S80).

In this embodiment, the second discharge pair is

operated in the sequence of power cooling discharge step

P4.5 (S40) -> discharge step P2 (S80).

In this embodiment, steps S60, S70, S100, and S110 are

omitted, unlike the first embodiment.

In this embodiment, steps S60, S70, S100, and S110 are

omitted, whereby the minimum one cycle time of the rapid

indirect wind mode is reduced. In this embodiment, the dynamic cooling steps (S40 and S80) are alternately repeated when the rapid indirect wind mode is executed in the state in which the indoor load is large.

The other constructions of this embodiment are

identical to those of the first embodiment, and therefore a

detailed description thereof will be omitted.

A method of controlling a ceiling type indoor unit

according to a third embodiment of the present disclosure at

the time of heating will be described with reference to FIG.

J 25.

The method of controlling the ceiling type indoor unit

according to this embodiment at the time of heating includes

a step (S12) of turning on a rapid indirect wind mode, a

load determination step (S13) of comparing an indoor load

with a heating setting load after step S12, a first dynamic

heating step (S43) of operating the first discharge pair in

discharge step P2 and operating the second discharge pair in

a power heating discharge step in the case in which the load

determination step (S13) is satisfied, and a step (S50) of

determining whether the first dynamic heating step (S43)

exceeds a first dynamic time (5 minutes in this embodiment).

The method further includes a second dynamic heating

step (S83) of operating the first discharge pair in the

power heating discharge step and operating the second

discharge pair in discharge step P2 in the case in which step S50 is satisfied and a step (S90) of determining whether the second dynamic heating step (S83) exceeds a second dynamic time (5 minutes in this embodiment).

The method further includes a step (S120) of

determining whether the rapid indirect wind mode is turned

off in the case in which step S90 is satisfied and a step of

finishing the rapid indirect wind mode in the case in which

step S120 is satisfied.

The first discharge pair and the second discharge pair

J are operated in the sequence of different operations ->

different operations.

In this embodiment, therefore, the first discharge

pair is operated in the sequence of discharge step P2 (S43)

-> power heating discharge step P4.5 (S83). In this

embodiment, the second discharge pair is operated in the

sequence of power heating discharge step P4.5 (S43) ->

discharge step P2 (S83).

In this embodiment, the dynamic heating steps (S43 and

S83) are alternately repeated when the rapid indirect wind

mode is executed at the time of heating.

In the load determination step (S13), the controller

determines an indoor load and a heating setting load. In

this embodiment, the indoor load is calculated as the

temperature difference between a target temperature and an

indoor temperature, and the heating setting load is 3 degrees.

That is, in the case in which the temperature

difference between the target temperature set by the user

and the indoor temperature is 3 degrees or more, it is

determined that the load determination step (S13) is

satisfied.

In the case in which the temperature difference is

less than 3 degrees, it is determined that the load

determination step (S13) is not satisfied. In this

J embodiment, the temperature difference is set to 3 degrees.

However, the temperature difference may be 2 degrees, and

may be variously changed depending on circumstances.

In the case in which the load determination step (S13)

is satisfied, step S43 is performed. In the case in which

the load determination step (S15) is not satisfied, step

S200 is performed.

Step S200 is an indirect wind provision step. In the

case in which the load determination step (S13) is not

satisfied, it is determined that the indoor load is not

large. In the case in which the indoor load is not large,

it is preferable to provide indirect wind to the person in

the room, rather than direct wind.

The reason for this is that, in the case in which

heated direct wind is directly supplied to the person in the

room, the person in the room may feel hot or dry. Step S200 is configured to provide indirect wind to the person in the room. In this embodiment, discharge step P2 is set.

That is, in the case in which the load determination

step (S13) is not satisfied, all of the first vane module,

the second vane module, the third vane module, and the

fourth vane module are set to be operated in discharge step

P2 (S200) .

In this embodiment, discharge step P2 is set in order

to provide indirect wind. Unlike this embodiment, however,

J discharge step P3 may be set. Since cold air is discharged

at the time of cooling, the discharged air may slowly move

toward the floor of the room even in the case in which

discharge step P1 is set. In the case in which discharge

step P1 is set at the time of heating, however, the

discharged air does not move to the floor. At the time of

heating, therefore, discharge step P3 may be set when

providing indirect wind.

The air discharged in the indirect wind provision step

(S200) flows along the ceiling of the room, flows downwards

toward the floor after colliding with the wall of the room,

and returns to the indoor unit after colliding with the

floor.

After the indirect wind provision step (S200), a step

(S210) of determining an indirect wind operation time is

further performed. In the case in which step S210 is satisfied, step S120 is performed. In the case in which step S210 is not satisfied, the procedure returns to step

S200.

Step S40 is a first dynamic heating step. The first

dynamic heating step is similar to the dynamic cooling step

described above.

In the first dynamic heating step (S43), the first

discharge pair and the second discharge pair are operated in

different discharge steps.

J In the first dynamic heating step (S43), the first

discharge pair and the second discharge pair are different

from each other in terms of supply target and supply

purpose. In the first dynamic heating step (S43), the first

discharge pair and the second discharge pair are operated in

different manners. In the first dynamic heating step (S43),

the second vane 220, being disposed at each of a first

discharge port 102-1 and a third discharge port 102-3

forming a first discharge pair, is disposed in a first

position, in which a front end 222a (end of a front side) of

the second vane 220 is directed to a rear end 212b (end of

the rear side) of the first vane 210 or a lower side of the

first vane 210, and the second vane 220 forms a first vane

angle with the first vane 210. Here, the first vane angle

may refer to a vane angle formed between the first vane 210

and the second vane 220 in discharge steps P2 to P4.

Further, in the first dynamic heating step (S43), the second

vane 220, being disposed at each of a second discharge port

102-2 and a fourth discharge port 102-4 forming a second

discharge pair, is disposed in a second position, in which a

front end 222a (end of a front side) of the second vane 220

is directed to a rear end 212b (end of the rear side) of the

first vane 210 or a lower side of the rear end of the first

vane 210, and the second vane 220 forms a second vane angle,

different from the first vane angle, with the first vane

J 210. Here, the second vane angle may refer to a vane angle

formed between the first vane 210 and the second vane 220 in

discharge steps P4 and P5 including a power heating angle.

The first vane angle, formed between the first vane 210 and

the second vane 220 in the first position, is in a range of

139.5 degrees to 145.8 degrees; and the second vane angle,

formed between the first vane 210 and the second vane 220 in

the second position, is in a range of 145.8 degrees to 151.8

degrees. The second vane angle may be greater than the

first vane angle. In the first position, the first vane 210

may be located at a lower side of each of the discharge

ports, and the front end of the second vane 220 may be

disposed to be directed to the lower side of the rear end of

the first vane 210. In the second position, the rear end of

the first vane 210 may be disposed to be directed to the

upper side of the rear end of the second vane 220.

In this embodiment, in the first dynamic heating step

(S43), the first discharge pair is set to be operated in

discharge step P2, and the second discharge pair is set to

be operated in the power heating discharge step.

In the first dynamic heating step (S43), the first

discharge pair is changed to be operated in discharge step

P2, and then the state thereof is maintained. In the first

dynamic heating step (S43), the second discharge pair is

changed to be operated in the power heating discharge step,

J and then the state thereof is maintained.

Discharge step P2 may send discharged air the farthest

except for horizontal wind (discharge step P1). Discharge

step P2 may provide indirect wind to the user.

In contrast, the second discharge pair provides direct

wind in which heated air is directly provided to the user.

The power heating discharge step may be one of discharge

steps P3 to P6, in which the second discharge pair is

disposed further vertically than in discharge step P2.

In the power heating discharge step, the inclination

of the first vane may be set to 35 degrees to 57 degrees.

Preferably, the power heating discharge step is

between discharge steps P4 to P6. In order to rapidly heat

indoor air, discharged air is preferably provided as

inclined wind, rather than horizontal wind or vertical wind.

In this embodiment, a separate discharge step is

disposed between discharge steps ranging from discharge

steps P4 to P6 instead of the power heating discharge step

being selected as one of discharge steps P1 to P6.

Therefore, discharge step P4.5 is disposed between discharge

] steps P4 and P5, and is defined as a power heating discharge

step.

Unlike this embodiment, discharge step P5 may be

selected as the power heating discharge step. The reason

that discharge step P5 is selected is that this discharge

step is a discharge step greatly different in air discharge

direction from discharge step P2, among discharge steps that

do not provide horizontal wind and vertical wind.

In power heating discharge step 4.5, the vane motor

230 is rotated 102 degrees (P4.5 rotational angle). The

first vane 210 and the second vane 220 have an inclination

between discharge steps P4 and P5 by rotation of the vane

motor 230. Consequently, the first vane 210 has an

inclination of 35 degrees to 44 degrees, and the second vane

210 has an inclination of about 70 degrees to 72 degrees.

In the first dynamic heating step (S43), the vane motor 230 of the first discharge pair is rotated 78 degrees

(P2 rotational angle), and the vane motor of the second

discharge pair is rotated 102 degrees (P4.5 rotational

angle).

In step S40, the first discharge pair provides

inclined wind approximate to horizontal wind, whereby

discharged air is provided over a long distance. The second

discharge pair, which is disposed so as to be perpendicular

to the discharge direction of the first discharge pair,

J provides inclined wind, whereby discharged air is provided

over a short distance.

For example, in the first dynamic heating step (S43),

when the first discharge pair supplies air to a place far

from the indoor unit in discharge step P2, heated air is

discharged at a gentle angle, and the discharged air gathers

upwards due to the difference in density from indoor air.

In the first dynamic heating step (S43), when the

first discharge pair supplies discharged air as indirect

wind in discharge step P2, the second discharge pair moves

heated air from the side close to the indoor unit to the

side far from the indoor unit in power heating discharge

step P4.5. At this time, the air discharged from the second

discharge pair is directed to the floor, compared to the

first discharge pair. Consequently, the discharged air

reaches the portion of the floor that is close to the indoor unit, and then moves to the portion of the floor that is far from the indoor unit along the floor. The air discharged from the second discharge pair is warmer than indoor air, and therefore the air is discharged toward the floor and then moves upwards.

Convection of air in the discharge direction of the

second discharge pair (the second discharge direction and

the fourth discharge direction) is accelerated by the air

discharged from the second discharge pair.

J In the case in which the air discharged from the

second discharge pair slowly moves upwards and reaches a

place far from the indoor unit, indoor air is pushed by the

heated discharged air and thus moves outwards.

In the case in which the first discharge pair provides

the discharged air over a long distance and the second

discharge pair, which is disposed so as to be perpendicular

thereto, provides the discharged air over a short distance,

as described above, it is possible to accelerate circulation

of the indoor air. That is, in the case in which the

distance difference and the height difference are formed

when the discharged air is discharged in different

directions, it is possible to more rapidly mix the heated

air and the indoor air with each other.

In the case in which the heated discharged air is

supplied in the first dynamic heating step (S43), therefore, deviation in temperature around the indoor unit may occur.

In particular, temperature deviation depending on the

vertical height as well as temperature deviation depending

on the horizontal distance based on the indoor unit may

greatly occur. In addition, temperature deviation between

the first discharge pair direction and the second discharge

pair direction may also greatly occur.

This is a natural phenomenon that occurs since the

first discharge pair and the second discharge pair are

J different in purpose from each other in the first dynamic

heating step (S43).

In step S50, operation time of step S43 is determined.

In the case in which step S50 is satisfied, step S83 is

performed. In the case in which step S50 is not satisfied,

the procedure returns to step S43.

In the second dynamic heating step (S83), the first

discharge pair and the second discharge pair are operated in

the opposite manner to the first dynamic heating step (S43).

In the second dynamic heating step (S83), the first vane 210

and the second vane 220, being disposed at each of the first

discharge port 102-1 and the third discharge port 102-3, are

disposed in the second position, and the first vane 210 and

the second vane 220, being disposed at each of the second

discharge port 102-2 and the fourth discharge port 102-4,

are disposed in the first position. Accordingly, in the second dynamic heating step (S83), a power heating discharge step is set for the first discharge pair, and the discharge step P2 is set for the second discharge pair. In the second dynamic heating step (S83), therefore, the first discharge pair is set to be operated in the power heating discharge step, and the second discharge pair is set to be operated in discharge step P2.

In the second dynamic heating step (S83), the first

discharge pair is changed to be operated in the power

J heating discharge step, and then the state thereof is

maintained for the second dynamic time. In the second

dynamic heating step (S83), the second discharge pair is

changed to be operated in discharge step P2, and then the

state thereof is maintained for the second dynamic time.

In the opposite manner to the first dynamic heating

step (S43), the second dynamic heating step (S83) provides

direct wind through the first discharge pair, and provides

indirect wind through the second discharge pair.

In this embodiment, the power heating discharge step

of the second dynamic heating step (S83) is discharge step

P4.5.

In the second dynamic heating step (S83), the vane

motor 230 of the first discharge pair is rotated 102 degrees

(P4.5 rotational angle), and the vane motor of the second

discharge pair is rotated 78 degrees (P2 rotational angle).

It is possible to more effectively mix air in the

indoor space by alternately performing the first dynamic

heating step (S43) and the second dynamic heating step

(S83). In addition, it is possible to minimize a dead zone

that indoor air does not reach by alternately performing the

first dynamic heating step (S43) and the second dynamic

heating step (S83).

In particular, since the first dynamic heating step

(S43) and the second dynamic heating step (S83) alternately

J provide indirect wind and direct wind, it is possible to

minimize a dead zone that indoor air does not reach.

For example, in the first dynamic heating step (S43),

the first discharge pair discharges air to a place far from

the indoor unit in discharge step P2. Subsequently, in the

second dynamic heating step (S83), the first discharge pair

discharges air to a place close to the indoor unit in power

heating discharge step P4.5. When the air is discharged, as

described above, it is possible to minimize a dead zone in

the discharge direction of the first vane module 201 and the

third vane module 203.

In addition, when the first discharge pair is

operated, the second discharge pair is operated reversely.

The second discharge pair discharges air to a place close to

the indoor unit in the first dynamic heating step (S43), and

discharges air to a place far from the indoor unit in the second dynamic heating step (S83). When the air is discharged, as described above, it is possible to minimize a dead zone in the discharge direction of the second vane module 202 and the fourth vane module 204.

For example, in the second dynamic heating step (S83),

the first discharge pair moves heated air from the side

close to the indoor unit to the side far from the indoor

unit in power heating discharge step 4.5. At this time, the

air discharged from the first discharge pair is directed to

D the floor. Consequently, the discharged air may reach the

portion of the floor that is close to the indoor unit, may

move to the portion of the floor that is far from the indoor

unit along the floor, and may move upwards due to the

difference in density from indoor air during movement.

In the case in which the air discharged from the first

discharge pair moves downwards, moves upwards, and reaches a

place far from the indoor unit, indoor air is pushed by the

heated discharged air and thus moves outwards.

In the case in which the second discharge pair

supplies air to a place far from the indoor unit in

discharge step P2, heated air is discharged at a gentle

angle, and the discharged air stays at the upper side due to

the difference in density from indoor air. The air

discharged from the second discharge pair may reach a place

far from the indoor unit in the state in which downward movement thereof is minimized. The air discharged from the second discharge pair in the form of horizontal wind may move far away in the state in which downward movement thereof is minimized, may collide with the wall of the room, and may move to the floor.

Air supplied to a place far from the indoor unit in

the form of horizontal wind in the first dynamic heating

step (S43) and the second dynamic heating step (S83) may

collide with the wall of the room, may move downwards, and

D may move in the state in which the flow direction of the air

is changed by 180 degrees, and indoor air may be moved

toward the indoor unit by the air that collides with the

wall.

Since heated air is alternately supplied to a place

close to the indoor unit and a place far from the indoor

unit in the horizontal direction in the first dynamic

heating step (S43) and the second dynamic heating step

(S83), as described above, it is possible to effectively mix

indoor air.

In addition, since heated air is alternately supplied

to the higher side and the lower side in the vertical

direction in the first dynamic heating step (S43) and the

second dynamic heating step (S83), it is possible to

effectively mix indoor air.

The other constructions of this embodiment are identical to those of the first embodiment, and therefore a detailed description thereof will be omitted.

A method of controlling a ceiling type indoor unit

according to a fourth embodiment of the present disclosure

at the time of heating will be described with reference to

FIG. 26.

The method of controlling the ceiling type indoor unit

according to this embodiment at the time of heating includes

a step (S12) of turning on a rapid indirect wind mode, a

D load determination step (S13) of comparing an indoor load

with a heating setting load after step S12, a first dynamic

heating step (S43) of operating the first discharge pair in

discharge step P2 and operating the second discharge pair in

a power heating discharge step in the case in which the load

determination step (S13) is satisfied, and a step (S50) of

determining whether the first dynamic heating step (S43)

exceeds a first dynamic time (5 minutes in this embodiment).

The method of controlling the ceiling type indoor unit

according to this embodiment at the time of heating further

includes a horizontal wind unity step (S63) of operating the

first discharge pair and the second discharge pair in

discharge step P2 in the case in which step S50 is satisfied

and a step (S73) of determining whether the horizontal wind

unity step (S63) exceeds a horizontal wind time (5 minutes

in this embodiment). In the horizontal wind unity step (S63) performed between the first dynamic heating step (S43) and the second dynamic heating step (S83) or between the second dynamic heating step (S83) and the first dynamic heating step (S43), the first vane 210 and the second vane 220, being disposed at each of the first discharge port, the second discharge port, the third discharge port, and the fourth discharge port, are disposed equally. In the horizontal wind unity step (S63), a front end 222a of the second vane 220 is directed to a rear end 212b of the first

J vane 210 or a lower side of the rear end 212b of the first

vane 210, and may be disposed in the first position or the

second position.

The method of controlling the ceiling type indoor unit

according to this embodiment at the time of heating further

includes a second dynamic heating step (S83) of operating

the first discharge pair in the power heating discharge step

and operating the second discharge pair in discharge step P2

in the case in which step S73 is satisfied and a step (S90)

of determining whether the second dynamic heating step (S83)

exceeds a second dynamic time (5 minutes in this

embodiment).

The method further includes a step (S120) of

determining whether the rapid indirect wind mode is turned

off in the case in which step S90 is satisfied and a step of

finishing the rapid indirect wind mode in the case in which step S120 is satisfied.

The first discharge pair and the second discharge pair

are operated in the sequence of different operations -> same

operation -> different operations.

In this embodiment, therefore, the first discharge

pair is operated in the sequence of discharge step P2 (S43)

-> discharge step P2 (S63) -> power heating discharge step

P4.5 (S83). In this embodiment, the second discharge pair

is operated in the sequence of power heating discharge step

] P4.5 (S43) -> discharge step P2 (S63) -> discharge step P2

(S83).

In this embodiment, step S63 and step S73 are added,

unlike the first embodiment.

Step S63 is a horizontal wind unity step. In the

horizontal wind unity step, all of the four vane modules are

set to be operated in the same discharge step. In the

horizontal wind unity step (S63), however, the four vane

modules are set to be operated in discharge step P2

approximate to horizontal wind.

The operation time of the horizontal wind unity step

(S63) is set to a horizontal wind time (5 minutes in this

embodiment). In this embodiment, the operation time of the

horizontal wind unity step (S63) is equal to the first

dynamic time.

Since the horizontal wind unity step (S63) is set to discharge step P2, the first discharge pair is maintained to be operated in discharge step P2 from the first dynamic heating step (S43) to the horizontal wind unity step (S63).

Since the horizontal wind unity step (S63) is set to

discharge step P2, the discharge step for the second

discharge pair is changed from power heating discharge step

P4.5 to discharge step P2.

Since the horizontal wind unity step (S63) is set to

discharge step P2, air may be provided to a place far from

] the indoor unit in the form of horizontal wind. Air

provided in the form of horizontal wind in the horizontal

wind unity step (S63) may collide with the wall of the room,

may move downwards, and may move in the state in which the

flow direction of the air is changed by 180 degrees, and

indoor air may be moved toward the indoor unit by the air

that collides with the wall.

That is, the air discharged in the horizontal wind

unity step (S63) may send hot air away and may gather low

temperature indoor air toward the indoor unit.

Although the horizontal wind unity step (S63) is set

to discharge step P2 approximate to horizontal wind in this

embodiment, the horizontal wind unity step (S63) may solve

temperature deviation occurring in the first dynamic heating

step (S43).

The other constructions of this embodiment are identical to those of the third embodiment, and therefore a detailed description thereof will be omitted.

While the embodiments of the present disclosure have

been described with reference to the accompanying drawings,

the present disclosure is not limited to the embodiments and

may be embodied in various different forms, and those

skilled in the art will appreciate that the present

disclosure may be embodied in specific forms other than

those set forth herein without departing from the technical

J idea and essential characteristics of the present

disclosure. The disclosed embodiments are therefore to be

construed in all aspects as illustrative and not

restrictive.

[Description of Reference Numerals]

100: Case 101: Suction port

102: Discharge port 103: Suction channel

104: Discharge channel 110: Case housing

120: Front panel 130: Indoor heat exchanger

140: Indoor blowing fan 200: Vane module

210: First vane 212a: Front end of first vane

212b: Rear end of first vane

216: First joint portion 217: Second joint portion

220: Second vane 222a: Front end of second vane

222b: Rear end of second vane

226: Third joint portion 230: Vane motor

240: Driving link 241: First driving link shaft

242: Second driving link shaft 243: Core link shaft

245: Driving link body 246: First driving link body

247: Second driving link body 248: Core body

250: First vane link 260: Second vane link

251: 1-1 vane link shaft 252: 1-2 vane link shaft

261: 2-1 vane link shaft 262: 2-2 vane link shaft

300: Front panel 310: Front body

320: Suction grill 330: Pre-filter

J 400: Module body 410: First module body

420: Second module body 500: Elevator

Claims

[CLAIMS]

[Claim 1]

A method of controlling a indoor unit of an air conditioner,

the indoor unit comprising:

a suction port;

a case having a first discharge port, a second discharge

port, a third discharge port, and a fourth discharge port

J being formed around a circumference of the suction port and

sequentially spaced apart from each other in a vertical

direction;

a first vane being disposed at each of the first discharge

port, the second discharge port, the third discharge port,

and the fourth discharge port, and connected to the case

through a driving link and a first vane link; and

a second vane being disposed at each of the first discharge

port, the second discharge port, the third discharge port,

and the fourth discharge port, and connected to the driving

link by a second vane link, and

the method comprises:

a first dynamic wind step, in which if an indoor load of an

indoor space, in which the ceiling type indoor unit is

installed, is greater than a set load, the respective first

and second vanes disposed at each of the first discharge port and the third discharge port are disposed in a first position, and the respective first and second vanes disposed at each of the second discharge port and the fourth discharge port are disposed in a second position; and a second dynamic wind step, in which if the indoor load is greater than the set load, the respective first and second vanes disposed at each of the first discharge port and the third discharge port are disposed in the second position, and the respective first and second vanes disposed at each

J of the second discharge port and the fourth discharge port

are disposed in the first position, and

wherein when the respective first and second vanes are in

the first position, a rear end of the respective first vane

is positioned higher than a front end of the respective

second vane,

wherein the distance between the front end of the respective

second vane and the rear end of the respective first vane in

the second position is formed wider than the distance

between the front end of the respective second vane and the

rear end of the respective first vane in the first position.
[Claim 2]

The method according to claim 1, further comprising a load

determining step of comparing the indoor load with the set

load.
[Claim 3]

The method according to any one of claims 1 and 2, further

comprising an indirect wind step, in which if the indoor

load is less than the set load, the front end of the

respective second vane is directed to the rear end of the

respective first vane, or the rear end of the respective

first vane is directed to the front end of the respective

second vane.
[Claim 4]

The method according to claim 3, wherein upon performing the

indirect wind step for a set period of time, the load

determining step is performed.
[Claim 5]

The method according to any one of claims 1 to 4, wherein

the indoor load is set based on a difference between an

indoor temperature of a space in which the ceiling type

indoor unit is installed, and a target temperature set by a

user.
[Claim 6]

The method according to any one of claims 1 to 5, wherein

the load determining step, the first dynamic wind step, and the second dynamic wind step are performed repeatedly.
[Claim 71

The method according to claim 6, further comprising

selecting, by a user, a high-speed indirect wind step before

the load determining step.
[Claim 8]

The method according to any one of claims 1 to 7, wherein a

J first vane angle formed between the respective first vane

and the respective second vane in the first position, is

smaller than a second vane angle formed between the

respective first vane and the respective second vane in the

second position.
[Claim 9]

The method according to any one of claims 1 to 8, wherein

when a heating mode for discharging heated air to the

discharge ports is operated, the respective first vane is

disposed at a lower side of the respective discharge port,

and a front end of the respective second vane is disposed to

be directed to a lower side of a rear end of the respective

first vane, in the first position.
[Claim 10]

The method according to any one of claims 1 to 9, wherein

when a heating mode for discharging heated air to the

discharge ports is operated, the rear end of the respective

first vane is disposed to be directed to an upper side of

the rear end of the respective second vane in the second

position.
[Claim 11]

The method according to any one of claims 1 to 10, wherein

J when a cooling mode for discharging cooled air to the

discharge ports is operated, the respective second vane

guides the air, discharged from the discharge ports, to move

along an upper side of the respective first vane in the

first position.
[Claim 12]

The method according to any one of claims 1 to 11, wherein

when a cooling mode for discharging cooled air to the

discharge ports is operated, the rear end of the respective

first vane is disposed to be directed to the rear end of the

respective second vane or the upper side of the respective

second vane in the second position.
[Claim 13]

The method according to any one of claims 1 to 12, wherein at each of the first discharge port, the second discharge port, the third discharge port, and the fourth discharge port, there is disposed: a vane motor coupled to the case and configured to provide a driving force; a driving link coupled to the vane motor and the respective first vane and configured to transmit the driving force, generated by the vane motor, to the respective first vane; a first vane link being spaced apart from the driving link

J and rotatably coupled to the case and the respective first

vane; and

a second vane link being rotatably coupled to each of the

driving link and the respective second vane.
[Claim 14]

The method according to claim 13, wherein each driving link

comprises:

a core body coupled to the respective vane motor;

a first driving link body extending to one side from the

core body and being rotatably connected to the respective

first vane; and

a second driving link body extending to the other side from

the core body and being rotatably connected to the second

vane link,

wherein the first driving link body and the second driving link body form a predetermined included angle.