Patent Description:
Generally, the air conditioner is composed of a compressor, a condenser, an evaporator, and expansion apparatus. And the air conditioner supplies cold air or hot air to the building or the room by air conditioning cycle.

The air conditioner is structurally classified into a separate type that the compressor is disposed outdoors and an integral type that the compressor is manufactured integrally.

In the separate type air conditioner, an indoor heat exchanger is installed in the indoor unit, and an outdoor heat exchanger and a compressor are installed in the outdoor unit, and a refrigerant pipe connects two separate apparatus.

The integral type air conditioner is an indoor heat exchanger, an outdoor heat exchanger, and a compressor installed in one case. The integral type air conditioner includes a window type air conditioner installed directly by hanging the apparatus on the window, and a duct type air conditioner installed outside the indoor space by connecting a suction duct and a discharge duct.

In general, the separate type air conditioner is classified by the installation type the indoor unit.

When the indoor unit is installed vertically in an indoor space, it is called a stand-type air conditioner. When the indoor unit is installed on an indoor wall, it is called a wall-mounted air conditioner. When the indoor unit is installed on the ceiling, it is called a ceiling type indoor unit.

The prior art according to the <CIT> discloses a structure guiding discharged air through a plurality of vanes.

In the ceiling type air conditioner, since a length of the plurality of vanes is very long compared to a width thereof, there was a problem of sagging downward due to the gravity and the wind pressure of the discharged air.

<CIT> relates to a ceiling-embedded air conditioning device that prevents the accumulation of dirt on the ceiling surface in the area near the edge of an outlet.

<CIT> relates to a ceiling type indoor unit of air conditioner capable of providing a plurality of inclined winds by simultaneously controlling directions of the first vane and the second vane.

The purpose of the present invention is to provide the ceiling type indoor unit of air conditioner that prevents a middle part of the vane, with longer length in right and left than in back and forth, from sagging by the self-weight.

In the linkage structure of the link and the vane assembled so that the relative rotation is possible, the purpose of the present invention is to provice the ceiling type indoor unit of air conditioner that prevents the vane from rotating by the self-weight.

The purpose of the present invention is to provide the ceiling type indoor unit of air conditioner that minimizes a torsion of the vane when the plurality of vanes, with longer length in right and left than in back and forth, are rotated by one motor.

The problems of the present invention are not limited to the problems mentioned above, and other problems that are not mentioned will be clearly understood by those who skilled in the art from the following description.

The present invention has the advantage of preventing the first vane from sagging by by installing a support link capable of relative rotation with respect to the first vane in the middle of the elongated first vane, and assembling the support link to be able to rotate relative to the case.

The present invention has the advantage of suppressing the torsion of the first vane, when the first vane rotates, by coupling the support bar disposed in the longitudinal direction of the first vane to the first vane link and the support link providing the rotational force to the first vane.

The present invention as defined in claim <NUM> includes a case on which a discharging hole is formed; a first vane disposed at the discharging hole; a vane motor assembled to the case and providing a driving force to the first vane; a driving link assembled relatively rotatably with the case and coupled with the vane motor and transmitting the driving force of the vane motor to the first vane; a first vane link assembled relatively rotatably with the case and with the first vane; a support bracket coupled to the case and disposed at the discharging hole; a support link disposed between one end and the other end in a longitudinal direction of the first vane, and assembled relatively rotatably with the first vane and with the support bracket.

The present invention may further include a support bar that one end thereof is coupled to the first vane link and that the other end thereof is coupld to the support link.

The support bar may be disposed in the longitudinal direction of the first vane.

The present invention may include further a support rib formed to protrude upwardly from an upper surface of the first vane; and one end of the support link may be assembled relatively rotatably with the support rib.

The support rib may be disposed between a rear end and a front end of the first vane, with respect to a progress direction of discharged air from the discharging hole.

The support rib may be disposed to extend long in the progress direction of the discharged air from the discharging hole.

The present invention may include a one side joint rib disposed at one side of the first vane and to which the first vane link is relatively rotatably assembled, and the one side joint rib and the support rib may be disposed to face each other.

A length of the first vane link and a length of the support link may be formed to be same.

The support link may include a first support link body; a first support link shaft disposed below the first support link body and assembled with the support rib and rotating relatively to the first vane; and a second support link shaft disposed above the first support link body and assembled relatively rotatably with the support bracket.

the first vane link may include a first vane link body; a <NUM>-<NUM> vane link shaft disposed under the first vane link body and seembled with the first vane and rotating relatively to the first vane; and a <NUM>-<NUM> vane link shaft disposed above the first vane link body and assembled with the case and rotating relatively to the case.

The present invention may further include a support bar that one end thereof is coupled to the <NUM>-<NUM> vane link shaft and the other end thereof is coupled to the first support link shaft.

The case may further include a link installation part that the vane motor is assembled to one side surface thereof and that the driving link and the first vane link are assembled to the other side surface thereof, and the other side surface of the link installation part may be exposed to the discharging hole and may be disposed to face the support bracket.

The support bracket is disposed above a bottom surface of the case, and the support bracket is formed to extend long in the progress direction of the discharged air from the discharging hole.

the support bracket is disposed higher than the discharging hole and is disposed on a discharging flow path from the suction hole to the discharging hole.

The present invention may include a second vane disposed at the discharging hole and assembled rotatably with the case; a second vane link assembled relatively rotatably with the driving link and the second vane, respectively, and the second vane may be disposed lower than the support bracket.

The present invention may further include a bracket avoidance groove formed at the support bracket and formed to be concave upwardly from a lower side of the support bracket, and at least part of the second vane may be positioned and inserted into the bracket avoidance groove, when the second vane operates.

According to the invention, the driving link includes one side driving link disposed at one side of the discharging hole and includes the other side driving link disposed at the other side of the discharging hole, and the first vane link includes one side first vane link disposed at the one side of the discharging hole and includes the other side first vane link disposed at the other side of the discharging hole.

The support link includes a first support bracket disposed close to the one side between the one side and the other side of the discharging hole and includes a second support bracket disposed close to the other side.

According to the invention, the support link includes a first support link assembled relatively rotatably with the first vane and the first support bracket and includes a second support link assembled relatively rotatably with the first vane and the second support bracket.

The present invention may further include a first support bar coupled to the one side first vane link and the first support link; and a second support bar coupled to the other side first vane link and the second support link.

The first support bar and the second support bar are arranged in a line.

The first support bar and the second support bar may be disposed at the same height with respect to the first vane.

The first support bar may be disposed at the front further than the one side driving link, and the second support bar may be disposed at the front further than the other side driving link.

The ceiling type indoor unit of the air conditioner according to the present invention has the following effects.

First, the present invention has an advantage of preventing the first vane from sagging by installing a support link capable of relative rotation with respect to the first vane in the middle of the elongated first vane, and assembling the support link to be able to rotate relative to the case.

Second, the present invention has an advantage of suppressing the torsion of the first vane, when the first vane rotates, by coupling a support bar, disposed in the longitudinal direction of the first vane, to a first vane link and a support link providing the rotational force to the first vane.

Third, the present invention has an advantage of suppressing the sag of the first vane and a second vane, even if the first vane and the second vane stop at an arbitrary position, because the support link and the support bar support the first vane and the second vane.

Fourth, the present invention has an advantage of minimizing the relative rotation, to a first vane link and a driving link, of the first vane because the support link and the support bar support the first vane, the first vane link, and the driving link, even if the sag or rotation occurs when the first vane stops at an arbitrary position by each of relatively rotating structures that the first vane is assembled respectively to the first vane link and to the driving link.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in a variety of different forms, as long as within the scope of the claims. The present embodiments are provided to disclose completely the present invention and to fully inform the scope of the present invention to those who skilled in the art to which the present disclosure pertains. The invention is only defined by the scope of the claims. The same reference sign refers to the same elements throughout the whole specification.

Thereinafter, embodiment of the present invention will be described in detail with referenced drawings.

<FIG> is a perspective view showing the indoor unit of air conditioner according to one embodiment of the present invention. <FIG> is a cross-sectional view of <FIG>. <FIG> is an exploded perspective view showing a front panel of <FIG>. <FIG> is a perspective view showing an upper part of the front panel of <FIG>.

Referring to <FIG>, the indoor unit of air conditioner according to the present embodiment includes a case <NUM> at which a suction hole <NUM> and a discharging hole <NUM> are formed, an indoor heat exchanger <NUM> disposed inside the case <NUM>, an indoor blowing fan <NUM> inducing air into the suction hole <NUM> and the discharging hole <NUM> and disposed inside the case <NUM>.

The indoor unit further includes a vane module <NUM> for controlling a direction of discharged air through the discharging hole <NUM>. The vane module <NUM> includes a first vane <NUM> and a second vane <NUM>.

An area of the first vane <NUM> and an area of the second vane <NUM> are formed to be different. In the present embodiment, the area of the first vane is formed to be wider than the area of the second vane. The first vane is positioned at an inside of the discharging hole <NUM> and may cover the discharging hole <NUM>.

When the indoor unit does not operate, the second vane <NUM> is positioned above the first vane <NUM>.

When the vane module <NUM> operates, the first vane <NUM> opens the discharging hole <NUM> by descending down the discharging hole <NUM> and the second vane <NUM> rotates in place.

Referring to <FIG>, in the present embodiment, the case <NUM> includes a case housing <NUM> and a front panel <NUM>. The case housing <NUM> is installed hanging from an indoor ceiling by a hanger (not shown) and is formed by opening a bottom thereof. The front panel <NUM> covers an opened surface of the case housing <NUM>, and is disposed toward the floor, and is exposed to an indoor space, and has the suction hole <NUM> and the discharging hole <NUM>.

The case <NUM> may be realized in various types depending on the manufacturing type, and the configuration of the case <NUM> does not limit the idea of the present invention.

The suction hole <NUM> is disposed at a center of the front panel <NUM>, and the discharging hole <NUM> is disposed outside the suction hole <NUM>. A number of the suction holes <NUM> or discharging holes <NUM> is irrelevant to the idea of the present invention. In the present embodiment, one suction hole <NUM> is formed, and a plurality of discharging holes <NUM> are disposed.

In the present embodiment, when viewed from the bottom, the suction hole <NUM> is formed in a tetragonal shape, and four discharging holes <NUM> are disposed to be spaced apart, by a predetermined distance, from each of edges of the suction hole <NUM>.

Referring to <FIG>, the indoor heat exchanger <NUM> is disposed between the suction hole <NUM> and the discharging hole <NUM> and partitions the inside of the case into an inner side and an outer side. the indoor heat exchanger <NUM> is arranged vertically in this embodiment.

The indoor blowing fan <NUM> is positioned in the indoor heat exchanger <NUM>.

When viewed from the top view or the bottom view, the indoor heat exchanger has "□" shape entirely and some sections thereof may be separated.

The indoor heat exchanger <NUM> is disposed for discharged air from the indoor blowing fan <NUM> enters vertically.

A drain pan <NUM> is installed inside the case <NUM> and the indoor heat exchanger <NUM> is mounted on the drain pan <NUM>. Condensate formed on the indoor heat exchanger <NUM> may flow into the drain pan <NUM> and then may be stored therein. A drain pump (not shown), for discharging collected condensate to an outside, is disposed at the drain pan <NUM>.

The drain pan <NUM> may have an inclined plane having directionality to store the condensate flowing down.

Referring to <FIG>, the indoor blowing fan <NUM> is positioned inside the case <NUM> and is disposed above the suction hole <NUM>. As the indoor blowing fan <NUM>, a centrifugal blower that sucks air through the center thereof and discharges air to the circumferential direction thereof is used.

The indoor blowing fan <NUM> includes a bellmouth <NUM>, a fan <NUM>, and a fan motor <NUM>.

The bellmouth <NUM> is disposed above a suction grill <NUM> and is positioned below the fan <NUM>. The bellmouth <NUM> guides air, that has passed through the suction grill <NUM>, to the fan <NUM>.

The fan motor <NUM> rotates the fan <NUM>. The fan motor <NUM> is fixed to the case housing <NUM>. The fan motor <NUM> is disposed above the fan <NUM>. At least a part of the fan motor <NUM> is positioned higher than the fan <NUM>. A motor shaft of the fan motor <NUM> is disposed downward, and the fan <NUM> is coupled to the motor shaft.

An indoor heat exchanger <NUM> is positioned outside edges of the fan <NUM>. At least a part of the fan <NUM> and at least a part of the indoor heat exchanger <NUM> are disposed on the same horizontal line. In addition, the part of the bellmouth <NUM> is inserted into an inside of the fan <NUM>. The part of the bellmouth <NUM> overlaps with the fan <NUM> in up and down direction.

Referring to <FIG>, the indoor heat exchanger <NUM> is disposed inside the case housing <NUM> and divides the inside of the case housing <NUM> into the inner side and the outer side.

An inner space surrounded by the indoor heat exchanger <NUM> is defined as a suction flow path <NUM>, and an outer space of the indoor heat exchanger <NUM> is defined as a discharging flow path <NUM>.

The indoor blowing fan <NUM> is disposed on the suction flow path <NUM>. The discharging flow path <NUM> is between an outside of the indoor heat exchanger <NUM> and a lateral wall of the case housing <NUM>.

When viewed from the top view or the bottom view, the suction flow path <NUM> is the inner space surrounded by "□" of the indoor heat exchanger and the discharging flow path <NUM> is the outside "□" of the indoor heat exchanger.

The suction flow path <NUM> communicates with the suction hole <NUM>, and the discharging flow path <NUM> communicates with the discharging hole <NUM>.

Air flows from a lower side of the suction flow path <NUM> to an upper side thereof and flows from an upper side to a lower side of the discharging flow path <NUM>. A flow direction of the air is switched <NUM> degrees based on the indoor heat exchanger <NUM>.

The suction hole <NUM> and the discharging hole <NUM> are formed on a same surface of the front panel <NUM>.

The suction hole <NUM> and the discharging hole <NUM> are arranged to face the same direction. In the present embodiment, the suction hole <NUM> and the discharging hole <NUM> are arranged to face the floor of the indoor space.

When the front panel <NUM> is curved, the discharging hole <NUM> may be formed to have a slight side slope, but the discharging hole <NUM> connected to the discharging flow path <NUM> is formed to face downward.

A vane module <NUM> is disposed to control direction of air discharged through the discharging hole <NUM>.

The front panel <NUM> includes a front body <NUM> coupled to the case housing <NUM> and having the suction hole <NUM> and the discharging hole <NUM> formed thereon, a suction grill <NUM> having a plurality of grill holes <NUM> formed therein and covering the suction hole <NUM>, a pre-filter <NUM> separably assembled to the suction grill <NUM>, the vane module <NUM> installed at the front body <NUM> and controlling an air flow direction of the discharging hole <NUM>. The suction grill <NUM> is installed to be separable from the front body <NUM>. The suction grill <NUM> may be elevated, in the up and down direction, from the front body <NUM>. The suction grill <NUM> covers an entire suction hole <NUM>.

In the present embodiment, the suction grill <NUM> has the plurality of grill holes <NUM> formed by a grid shape. The grill holes <NUM> and the suction hole <NUM> communicate with each other.

The pre-filter <NUM> is disposed above the suction grill <NUM>. The pre-filter <NUM> filters air sucked into the case <NUM>. The pre-filter <NUM> is positioned above the grill hole <NUM> and filters the air passed through the suction grill <NUM>.

The discharging hole <NUM> is formed in long slit shape along an edge of the suction hole <NUM>. The vane module <NUM> is positioned at the discharge hole <NUM> and is coupled to the front body <NUM>.

In the present embodiment, the vane module <NUM> may be separated down from the front body <NUM>. That is, the vane module <NUM> is disposed irrespectively to the coupling structure of the front body <NUM> and may be independently separated from the front body <NUM>. The structure related thereto will be described later in more detail.

Referring to <FIG>, the front body <NUM> is coupled to the lower side of the case housing <NUM> and is disposed toward the indoor space. The front body <NUM> is installed at the indoor ceiling and exposed indoors and is exposed to the indoor space.

The front body <NUM> is coupled to the case housing <NUM>, and the case housing <NUM> supports a load of the front body <NUM>. The front body <NUM> supports a load of the suction grill <NUM> and the pre-filter <NUM>.

The front body <NUM> is formed in a quadrangle shape when viewed from the top view. The shape of the front body <NUM> may be variously formed.

The upper side surface of the front body <NUM> may be horizontally formed so as to be in close contact with the ceiling, and the lower side surface may have a slightly curved edge.

A suction hole <NUM> is disposed in the center of the front body <NUM>, and the plurality of discharging holes <NUM> are disposed outside the edge of the suction hole <NUM>.

When viewed from the top view, the suction hole <NUM> may be formed in a square shape, and the discharging hole <NUM> may be formed in a rectangular shape. The discharging hole <NUM> may be formed in the slit shape with a length longer than a width.

The front body <NUM> includes a front frame <NUM>, a side cover <NUM>, and a corner cover <NUM>.

The front frame <NUM> provides load and rigidity of the front panel <NUM> and is fastened and fixed to the case housing <NUM>. The suction hole <NUM> and the four discharging holes <NUM> are formed in the front frame <NUM>.

In the present embodiment, the front frame <NUM> includes a side frame <NUM> and a corner frame <NUM>.

The corner frames <NUM> are disposed at each corner of the front panel <NUM>. The side frame <NUM> is combined with the two corner frames <NUM>. The side frame <NUM> includes an inner side frame 311a and an outer side frame 311b.

The inner side frame 311a is disposed between the suction hole <NUM> and the discharging hole <NUM> and is coupled to the two corner frames <NUM>. The outer side frame 311b is disposed outside the discharging hole <NUM>.

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

The suction hole <NUM> is positioned inside the four inner side frames 311a. The discharging hole <NUM> is formed surrounded by two corner frames <NUM>, one inner side frame 311a, and one outer side frame 311b.

Further, the side cover <NUM> and the corner cover <NUM> are coupled to the bottom of the front frame <NUM>. The side cover <NUM> and the corner cover <NUM> are exposed to a user, and the front frame <NUM> is not visible to the user.

The side cover <NUM> is disposed at an edge of the front frame <NUM>, and the corner cover <NUM> is disposed at a corner of the front frame <NUM>.

The side cover <NUM> is formed of a synthetic resin material and is fastened and fixed to the front frame <NUM>. Specifically, the side cover <NUM> is coupled to the side frame <NUM>, and the corner cover <NUM> is coupled to the corner frame <NUM>.

In the present embodiment, four the side cover <NUM> and four corner cover <NUM> are provided. The side cover <NUM> and the corner cover <NUM> are coupled to the front frame <NUM> and connected, as a single structure. In the front panel <NUM>, four side covers <NUM> and four corner covers <NUM> form one edge.

The side cover <NUM> is disposed under the side frame <NUM>, and the corner cover <NUM> is disposed under the corner frame <NUM>.

Four side covers <NUM> and four corner covers <NUM> are assembled to form a border of quadrangle. The connected four side covers <NUM> and four corner covers <NUM> are defined as a front deco <NUM>.

The front deco <NUM> forms a deco outer border <NUM> and a deco inner border <NUM>.

When viewed from the top view or the bottom view, the deco outer border <NUM> is formed in the quadrangle shape, and the deco inner border <NUM> is also formed in the quadrangle shape. However, the corners of the deco inner border form a predetermined curvature.

The suction grill <NUM> and the four vane modules <NUM> are disposed inside the deco inner border <NUM>. In addition, the suction grill <NUM> and the four vane modules <NUM> are in contact with the deco inner border <NUM>.

In the present embodiment, four side covers <NUM> are disposed, and each side cover <NUM> is coupled to the front frame <NUM>. An outer edge of the side cover <NUM> forms a part of the deco outer border <NUM>, and an inner edge thereof forms a part of the deco inner border <NUM>.

In particular, the inner edge of the side cover <NUM> forms an outer boundary of the discharging hole <NUM>. The inner edge of the side cover <NUM> is defined as a side deco inner border <NUM>.

In the present embodiment, four corner covers <NUM> are disposed, and each corner cover <NUM> is coupled to the front frame <NUM>. An outer edge of the corner cover <NUM> forms the part of the deco outer border <NUM>, and an inner edge thereof forms the part of the deco inner border <NUM>.

The inner edge of the corner cover <NUM> is defined as a corner deco inner border <NUM>.

The corner deco inner border <NUM> may be disposed to contact with the suction grill <NUM>. In the present embodiment, the inner edge of the corner cover <NUM> is disposed to face the suction grill <NUM> and is spaced apart therefrom, by a predetermind distance, to form a gap 317a.

The side deco inner border <NUM> is also spaced apart from the vane module <NUM> by a predetermined distance to form a gap 315a and is disposed to face an outer edge of the vane module <NUM>.

A continuous gap formed by the four side deco inner border gaps 315a and the four corner deco inner border gaps 317a is defined as a front deco gap 350a.

The front deco gap 350a is formed at an inner edge of the front deco <NUM>. Specifically, the front deco gap 350a is formed by spacing the outer edge of the vane module <NUM> and an outer edge of the suction grill <NUM> apart from the inner edge of the front deco <NUM>.

When the vane module <NUM> does not operate (When the indoor unit is stopped), the front deco gap 350a makes the suction grill <NUM> and the vane module <NUM> appear as one structure.

A support bracket <NUM> may be further disposed at the front body <NUM>. The support bracket <NUM> is disposed at the discharging hole <NUM>.

The support bracket <NUM> is disposed to intersect with a longitudinal direction of the discharging hole <NUM>. The support bracket <NUM> is disposed in a progress direction of the discharged air.

The support bracket <NUM> may be assembled to or integrally manufactured with elements constituting the front panel <NUM>.

For example, the support bracket <NUM> may be disposed at the front frame <NUM> or the side cover <NUM>. The support bracket <NUM> may be assembled to the front frame <NUM> or to the side cover <NUM>.

The support bracket <NUM> is disposed in a middle of one side and the other side of the discharge hole <NUM>.

A plurality of support brackets <NUM> may be disposed. In the present embodiment, the support bracket <NUM> includes a first support bracket <NUM> disposed close to one side of the discharging hole <NUM> and a second support bracket <NUM> disposed close to the other side of the discharging hole <NUM>.

The support bracket <NUM> may be disposed higher than the discharging hole <NUM> and may be disposed at the discharge passage <NUM>. An end of the support bracket <NUM> close to the suction hole <NUM> is defined as an inner end <NUM>, and an end thereof close to the side cover <NUM> is defined as an outer end <NUM>.

In the present embodiment, the inner end <NUM> of the support bracket <NUM> may be coupled to the inner side frame 311a, and the outer end <NUM> may be coupled to the outer side frame 311b.

The support bracket <NUM> is disposed higher than a bottom surface of the side cover <NUM>. The support bracket <NUM> is disposed higher than the first vane <NUM>.

The support bracket <NUM> may be disposed at the same height as or higher than the second vane <NUM>. A height of the support bracket <NUM> and a height of the second vane <NUM> may overlap.

A bracket avoidance groove <NUM> is formed at the support bracket <NUM> to prevent interference due to the operation (rotation) of the second vane <NUM>. The bracket avoidance groove <NUM> is formed to be concave in a direction from the lower side to the upper side.

When the second vane <NUM> operates, a part of the second vane <NUM> may be inserted into the bracket avoidance groove <NUM>. When the second vane <NUM> operates, at least the part of the second vane is inserted into the bracket avoidance groove <NUM> and positioned, and at least a part of the second vane <NUM> is positioned at the same height as the bracket avoidance groove <NUM>.

The bracket avoidance groove <NUM> includes a front bracket avoidance groove 455a into which a front end 222a of the second vane <NUM> is inserted, a rear bracket avoidance groove 445b into which a rear end 222b of the second vane <NUM> is inserted.

The front bracket avoidance groove 455a and the rear bracket avoiding groove 445b may be formed separately. In the present embodiment, the front bracket avoidance groove 455a and the rear bracket avoidance groove 445b are formed by being connected as one.

The support bracket <NUM> includes an assembly part <NUM> to which any one of support link <NUM> or a support bar <NUM>, described later, is assembled. The support link <NUM> or the support bar <NUM> may be assembled to the assembly part <NUM> and relatively rotate to the support bracket <NUM>.

The assembly part <NUM> is disposed outside the bracket avoidance groove <NUM> based on the suction hole or the discharging hole. Based on the flow direction of the discharged air, the assembly part <NUM> is disposed toward the flow direction than the bracket avoidance groove <NUM>.

Meanwhile, when the second vane <NUM> operates, a vane avoidance grooves <NUM>, <NUM> for avoiding interference with the support bracket <NUM> may be additionally formed in the second vane <NUM>.

A first vane avoidance groove <NUM> is disposed at a front side of the second vane <NUM> and is formed in the back and forth direction. The first vane avoidance groove <NUM> is formed to be wider than a width, in the right and left direction, of the support bracket <NUM>.

The second vane avoidance groove <NUM> is disposed at a rear side of the second vane <NUM> and is formed in the back and forth direction. The second vane avoidance groove <NUM> is formed to be wider than a width, in the right and left direction, of the support bracket <NUM>.

When the second vane <NUM> operates, the front end 222a of the support bracket <NUM> may be inserted into the first vane avoidance groove <NUM>. When the second vane <NUM> operates, the rear end 222b of the support bracket <NUM> may be inserted into the second vane avoidance groove <NUM>.

The suction grill <NUM> is positioned under the front body <NUM>. The suction grill <NUM> may move downward with it in close contact with the bottom surface of front body <NUM>. The suction grill <NUM> includes a grill body <NUM> and a plurality of grill holes <NUM> formed to penetrate the grill body <NUM> in the up and down direction.

The suction gill <NUM> includes the grill body <NUM> disposed under the suction hole <NUM> and communicating with the suction hole <NUM> by the plurality of grill holes <NUM> and formed in the quadrangle shape, and a grill corner part <NUM> formed to be extended, in the diagonal direction, from a corner of the grill body <NUM>.

A bottom surface of the grill body <NUM> and a bottom surface of the first vane <NUM> may form the continuous surface. In addition, the bottom surface of the grill body <NUM> and the bottom surface of the corner cover <NUM> may form the continuous surface.

Inside the grill body <NUM>, a plurality of grills <NUM> are disposed in a grid shape. The grid-shaped grill <NUM> forms a quadrangle-shaped grill hole <NUM>. A section in which the grill <NUM> and the grill hole <NUM> are formed is defined as a suction part.

The grill body <NUM> includes a suction part through which air passes, and a grill body part <NUM> disposed to surround the suction part. When viewed from the top view or the bottom view, the suction unit is formed overall in the quadrangle shape.

Each corner of the suction part is disposed to face each corner of the front panel <NUM>, and more particularly, to face the corner cover <NUM>.

When viewed from the bottom view, the grill body <NUM> is formed in the quadrangle shape.

An outer edge of the grill body part <NUM> is disposed to face the discharging hole <NUM> or the front deco <NUM>.

The outer edge of the grill body part <NUM> includes a grill corner border <NUM> disposed to face the corner cover <NUM>, the discharge hole <NUM>, and a grill side border <NUM> disposed to face the side cover <NUM>.

The grill corner border <NUM> is formed with a curvature centered on an inside of the suction grill <NUM>, the grill side border <NUM> may be formed with a curvature centered on an outside of the suction grill <NUM>.

The grill body part <NUM> further includes a grill corner part <NUM> surrounded by the grill corner border <NUM> and two grill side borders <NUM>. The grill corner part <NUM> is formed to protrude, from the grill body part <NUM>, toward the corner cover <NUM>.

The grill corner part <NUM> is disposed at each corner of the grill body <NUM>. The grill corner part <NUM> extends toward each corner of the front panel <NUM>.

In the present embodiment, four grill corner parts <NUM> are disposed. For convenient explanation, the four grill corner parts <NUM> are defined as a first grill corner part <NUM>-<NUM>, a second grill corner part <NUM>-<NUM>, a third grill corner part <NUM>-<NUM>, and a fourth grill corner part <NUM>-<NUM>.

The grill side border <NUM> is formed in the concave shape from the outside to the inside thereof.

A discharging hole <NUM> is formed between the side cover <NUM> and the suction grill <NUM>. More specifically, one discharging hole <NUM> is formed between the side deco inner border <NUM> of the side cover <NUM> and the grill side border <NUM> of the grill body <NUM>. Each discharging hole <NUM> is formed between the side deco inner border <NUM>, disposed in the four directions of the suction grill <NUM>, and the grill side border <NUM>.

In the present embodiment, a length of the grill corner border <NUM> and a length of the corner deco inner border <NUM> are formed to be same. That is, a width of the corner cover <NUM> and a width of the grill corner part <NUM> are formed to be same.

In addition, an inner width of the side cover <NUM> and a width of the grill side border <NUM> are formed to be same.

The grill side borders <NUM> are classified in more detail as follows.

The grill side border <NUM> forms an inner boundary of the discharging hole <NUM>. The side deco inner border <NUM> and the corner deco inner border <NUM> form an outer boundary of the discharging hole <NUM>.

The grill side border <NUM> includes a long straight line section 325a extending in the longitudinal direction of the discharging hole <NUM> and formed in a straight line, a first curved line section 325b connected to one side of the long straight line section 325a and having a center of curvature formed outside of the suction grill <NUM>, a second curved line section 325c connected to the other side of the long straight section 325a and having a center of curvature formed outside the suction grill <NUM>, a first short straight line section 325d connected to the first curved line section 325b, and a second short straight line section 325e connected to the second curved line section 325c.

The vane module <NUM> is installed in the discharging flow path <NUM> and controls the flow direction of the discharged air from the discharging hole <NUM>.

The vane module <NUM> includes a module body <NUM>, the first vane <NUM>, the second vane <NUM>, the vane motor <NUM>, the driving link <NUM>, the first vane link <NUM>, a second vane link <NUM>, the support link <NUM>, and the support bar <NUM>.

The first vane <NUM>, the second vane <NUM>, the vane motor <NUM>, the driving link <NUM>, the first vane link <NUM> and the second vane link <NUM> are all installed to the module body <NUM>. The module body <NUM> is installed on the front panel <NUM> as one body. That is, whole parts of the vane module <NUM> are modularized and installed on the front panel <NUM> simultaneously.

Since the vane module <NUM> is modularized, it is possible to shorten a time for assembling and to replace easily in case of breakdown.

In the present embodiment, a step motor is used as the vane motor <NUM>.

The driving link <NUM>, the first vane link <NUM>, and the second vane link <NUM> are elements for operating the first vane link <NUM> and the second vane link <NUM> simultaneously.

The support link <NUM> and the support bar <NUM> are elements that prevent the first vane <NUM> from sagging.

Since the same parts are disposed in the first module body <NUM> and the second module body <NUM>, when distinction is needed, an element disposed at the first module body <NUM> is referred to as "one side", and an element disposed on the second module body <NUM> is referred to as "the other side".

So the driving link includes one side driving link disposed on one side of the discharging hole, the other side driving link disposed on the other side of the discharging hole, and the first vane link includes one side first vane link disposed on one side of the discharging hole and the other side first vane link disposed on the other side of the discharging hole. <FIG> is a perspective view of a vane module shown in <FIG>. <FIG> is a perspective view shown from other direction of <FIG> is a plane view of the vane module shown in <FIG>. <FIG> is a perspective view showing an operational structure of the vane module according to one embodiment of the present invention.

Referring to <FIG> and <FIG>, the module body <NUM> may be configured as one body. In the present embodiment, to minimize an installation space and to minimize manufacturing cost, it is manufactured by being separated into two parts.

In the present embodiment, the module body <NUM> consists of a first module body <NUM> and a second module body <NUM>.

The first module body <NUM> and the second module body <NUM> are formed to be symmetrically left and right. In the present embodiment, common elements will be described by taking the first module body <NUM> as an example.

The first module body <NUM> and the second module body <NUM> are fastened to the front body <NUM>, respectively. Specifically, the first module body <NUM> and the second module body <NUM> are installed at the corner frame <NUM>, respectively.

With respect to the horizontal direction, the first module body <NUM> is installed at the corner frame <NUM> disposed at one side of the discharging hole <NUM>, and the second module body <NUM> is installed at the corner frame <NUM> disposed at the other side of the discharging hole hole <NUM>.

In the up and down direction, the first module body <NUM> and the second module body <NUM> are in close contact with a bottom surface of each corner frame <NUM> and are respectively fastened through a fastening member <NUM>.

Thus, the first module body <NUM> and the second module body <NUM> are disposed on the lower side of the front body <NUM>. When viewed in the installed state of the indoor unit, a fastening direction between the first module body <NUM> and the corner frame <NUM> are arranged toward the upper side from the lower side, and a fastening direction between the second module body <NUM> and the corner frame <NUM> are also arranged toward the upper side from the lower side.

Due to this structure, the entire vane module <NUM> can be easily separated from the front body <NUM> during a service process.

The vane module <NUM> includes a first module body <NUM> disposed on one side of the discharging hole <NUM>, positioned under the front body <NUM> and assembled to be separable downward from the front body <NUM>, and a second module body <NUM> disposed on the other side of the discharging hole <NUM>, positioned on the lower side of the front body <NUM> and assembled to be separable downward to the front body <NUM>, the first vane <NUM> and the second vane <NUM> that one side and the other side thereof are coupled respectively to the first module body <NUM> and the second module body <NUM>, and that rotate respectively relatively to the first module body <NUM> and the second module body <NUM>, the vane motor <NUM> installed on at least any one of the first module body <NUM> and the second module body <NUM> and providing a driving force to the first and second vanes <NUM> and <NUM>.

In particular, since the first module body <NUM> and the second module body <NUM> are positioned under the front body <NUM>, only the vane module <NUM> may be separated, while the front body <NUM> is installed in the case housing <NUM>, from the front body <NUM>. This is commonly applied to all of the four vane modules <NUM>.

When the module body <NUM> is separated from the front body <NUM>, the entire vane module <NUM> is separated toward the lower side of the front body <NUM>.

The module body <NUM> includes the module body part <NUM> coupled to the front body <NUM>, exposed to the outside, and formed by opening an upper side thereof, and a link installation part <NUM> providing one surface among side surfaces of the module body <NUM>, to which the vanes <NUM> and <NUM> are coupled.

The module body part <NUM> is fastened to the front body <NUM> by the fastening member <NUM>. Unlike the present embodiment, the module body part <NUM> may be coupled to the front body <NUM> by hook coupling or interference fit.

A fastening hole <NUM> is formed on the module body part <NUM>, and the fastening member passes through the module body part <NUM> and is coupled to the front body <NUM>.

In the present embodiment, the module body part <NUM>, a module body border <NUM>, and the link installation part <NUM> are manufactured, as one body, by injection molding.

The link installation part <NUM> is disposed adjacent to the first vane <NUM> and the second vane <NUM>, among the four surfaces of the module body part <NUM>.

The driving link <NUM>, the first vane link <NUM>, and the second vane <NUM> are assembled to the link installation part <NUM>. The driving link <NUM>, the first vane link <NUM>, and the second vane <NUM> may respectively rotate with assembling to the link installation part <NUM>.

In the present embodiment, to minimize vibration or noise generation by the first vane <NUM>, the second vane <NUM>, the vane motor <NUM>, the driving link <NUM>, the first vane link <NUM>, the second vane link <NUM>, and etc., the module body part <NUM> is stably fastened to the front body <NUM>.

The fastening member <NUM> for fixing the module body part <NUM> is in a state of being fastened in the direction from the lower side to the upper side and may be separated toward the lower side from the upper side.

A fastening hole <NUM> through which the fastening member <NUM> passes is formed in the module body part <NUM>.

The link installation part <NUM> of the first module body <NUM> and the link installation part <NUM> of the second module body <NUM> are disposed to face each other.

Between the link installation part <NUM> of the first module body <NUM> and the link installation part <NUM> of the second module body <NUM>, the first vane <NUM>, the second vane <NUM>, the driving link <NUM>, the first vane link <NUM>, the second vane link <NUM>, the support link <NUM> and the support bar <NUM> are installed.

The vane motor <NUM> is disposed outside the link installation part <NUM>.

The first vane <NUM>, the second vane <NUM>, the driving link <NUM>, the first vane link <NUM>, the second vane link <NUM>, the support link <NUM> and the support bar <NUM> are disposed inside the link installation parts <NUM>.

The vane motor <NUM> may be installed on at least any one of the first module body <NUM> or the second module body <NUM>.

In the link installation part <NUM>, a driving link coupling part <NUM> to which the driving link is assembled and providing a rotational center to the driving link <NUM>, a first vane link coupling part <NUM> to which the first vane link <NUM> is assembled and providing a rotational center to the first vane link <NUM>, and a second vane link coupling part <NUM> coupled to the second vane <NUM> and providing a rotational center to the second vane <NUM> are disposed.

In the present embodiment, the driving link coupling part <NUM> and the first vane link coupling part <NUM> are formed in the form of a hole penetrating the link installation part <NUM>.

The driving link <NUM> is rotatably assembled to the driving link coupling part <NUM>.

The first vane link <NUM> is rotatably assembled to the first vane link coupling part <NUM>.

The second vane <NUM> is rotatably assembled to the second vane coupling part <NUM>.

A second vane shaft <NUM> of the second vane <NUM> is inserted into the second vane coupling part <NUM>. In the present embodiment, the second vane coupling part <NUM> is formed in the shape of a boss protruding toward the module body <NUM> at an opposite side. Unlike the present embodiment, it may be realized in various forms providing a rotational axis.

Meanwhile, a stopper <NUM> for limiting the rotation angle of the driving link <NUM> is disposed at the link installation part <NUM>.

The stopper <NUM> is formed to protrude toward the vanes <NUM>, <NUM> from the link installation part <NUM> at an opposite side. Since the stopper <NUM> is formed along an edge of a driving link boss <NUM>, it is formed in arc shape.

In the present embodiment, the stopper <NUM> is disposed between the driving link coupling part <NUM> and the first vane link coupling part <NUM>. In the present embodiment, the stopper <NUM> is manufactured as one body with the link installation part <NUM>.

The stopper <NUM> generates interference at a certain position when the driving link <NUM> rotates and then limits rotation of the driving link <NUM>. The stopper <NUM> is positioned within a radius of rotation of the driving link <NUM>.

<FIG> is a perspective view of the driving link shown in <FIG>.

Referring to <FIG>, the driving link <NUM> is directly connected to the vane motor <NUM>. The motor shaft (not shown) of the vane motor <NUM> is directly coupled to the driving link <NUM>, and an amount of rotation of the driving link <NUM> is determined depending on the rotation angle of a rotational axis of the vane motor <NUM>. The driving link <NUM> passes through the link installation part <NUM> and is assembled to the vane motor <NUM>. In the present embodiment, the driving link <NUM> passes through the driving link coupling part <NUM>.

The driving link <NUM> includes a driving link body <NUM>, a first driving link shaft <NUM> disposed at the driving link body <NUM> and coupled rotatably to the first vane <NUM>, a core link shaft <NUM> disposed at the driving link body <NUM> and coupled rotatably to the link installation part <NUM> (specifically, the driving link coupling part <NUM>), a second driving link shaft <NUM> disposed at the driving link body <NUM> and coupled rotatably to the second vane link <NUM>.

The driving link body <NUM> includes a first driving link body <NUM>, a second driving link body <NUM> and a core body <NUM>.

The core link shaft <NUM> is disposed at the core body <NUM>, the first driving link shaft <NUM> is disposed at the first driving link body <NUM>, and the core link shaft <NUM> is disposed at the second driving link body <NUM>.

The core body <NUM> connects the first driving link body <NUM> and the second driving link body <NUM>. The first driving link body <NUM>, the second driving link body <NUM>, and the core link shaft <NUM> are connected to the core body <NUM>.

The core link shaft <NUM> protrudes from the core body <NUM> toward the vane motor <NUM>.

The core link shaft <NUM> is rotatably assembled with the link installation part <NUM>. The core link shaft <NUM> is assembled to the driving link coupling part <NUM> formed at the link installation part <NUM>. The core link shaft <NUM> may rotate relatively to the driving link coupling part <NUM>.

The first driving link shaft <NUM> and the second driving link shaft <NUM> protrude in a direction opposite to the core link shaft <NUM>. The first driving link shaft <NUM> and the second driving link shaft <NUM> protrude toward the first vane <NUM> and the second vane <NUM>.

The driving link <NUM> is disposed at an inside (at a vane side) with respect to the link installation part <NUM>. Only the core link shaft <NUM> of the driving link <NUM> passes through the link installation part <NUM> and is disposed outside the link installation part <NUM> (at a vane motor side).

The core link shaft <NUM> is formed in a cylindrical shape where an inside thereof is empty. The motor shaft <NUM> of the vane motor <NUM> is inserted into a hollow formed in the inside of the core link shaft <NUM>.

The core link shaft <NUM> passes through the driving link coupling part <NUM>.

There are no special restrictions on the shapes of the first driving link body <NUM> and the second driving link body <NUM>. The first driving link body <NUM> and the second driving link body <NUM> may be formed in the shape of straight line or curved line.

The first driving link body <NUM> is formed longer than the second driving link body <NUM>. The first driving link shaft <NUM> is rotatably assembled with the first vane <NUM>. The second driving link shaft <NUM> is rotatably assembled with the second vane link <NUM>.

The first driving link body <NUM> is connected with the core body <NUM> and extends in a direction orthogonal to the core link shaft <NUM>. The first driving link body <NUM> extends in a direction parallel to a thickness of the core body <NUM>.

The first driving link shaft <NUM> is a shaft rotation structure for rotation with the first vane <NUM>.

The second driving link body <NUM> is connected with the core body <NUM> and extends in the direction orthogonal to the core link shaft <NUM>. The second driving link body <NUM> extends in the direction parallel to the thickness of the core body <NUM>.

The second driving link shaft <NUM> is formed in a cylindrical shape. The second driving link shaft <NUM> passes through the second vane link <NUM>.

€The first driving link body <NUM> and the second driving link body <NUM> form a predetermined a contained angle E. A virtual straight line, connecting the first driving link shaft <NUM> and the core link shaft <NUM>, and a virtual straight line, connecting the core link shaft <NUM> and the second driving link shaft <NUM>, form a predetermined the contained angle E. The contained angle E is formed in more than <NUM> degrees and less than <NUM> degrees.

The first driving link shaft <NUM> provides a structure in which the driving link body <NUM> and the first vane <NUM> may rotate relativey to each other. In the embodiment, the first driving link shaft <NUM> is formed with the driving link body <NUM> as one body. Unlike the present embodiment, the first driving link shaft <NUM> may be manufactured with the first vane <NUM> or a joint rib <NUM> as one body.

The core link shaft <NUM> provides a structure in which the driving link body <NUM> and the module body (specifically, the link installation part <NUM>) may rotate relatively each other. In the present embodiment, the core link shaft <NUM> is formed integrally with the driving link body <NUM>.

The second driving link shaft <NUM> provides a structure in which the second vane link <NUM> and the driving link <NUM> may rotate relatively each other. In the present embodiment, the second driving link shaft <NUM> is formed with the driving link body <NUM> as one body. Unlike the present embodiment, the second driving link shaft <NUM> may be manufactured with the second vane link <NUM> as one body.

In the present embodiment, the second driving link shaft <NUM> is disposed at the second driving link body <NUM>. The second driving link shaft <NUM> is disposed at an opposite side of the first driving link shaft <NUM> with respect to the core link shaft <NUM>.

<FIG> is a perspective view of the first vane link shown in <FIG>.

Referring to <FIG>, in the present embodiment, the first vane link <NUM> is formed of a robust material.

The first vane link <NUM> includes a first vane link body <NUM> formed of the robust material, the <NUM>-<NUM> vane link shaft <NUM> disposed at one side of the first vane link body <NUM> and assembled with the first vane <NUM> (Specifically, with a second joint part) rotating relatively to the firsts vane <NUM>, the <NUM>-<NUM> vane link shaft installation part disposed at one side of the first vane link body <NUM> and formed to be extended toward the first vane <NUM> from the first vane link body <NUM> and at which the <NUM>-<NUM> vane link shaft is disposed, the <NUM>-<NUM> vane link shaft disposed at the other side of the first vane link body <NUM> and assembled with the module body <NUM> (Specifically, with the link installation part <NUM>) and rotating relatively to the module bodu <NUM>, and the <NUM>-<NUM> vane link shaft installation part disposed at the other side of the first vane link body <NUM> and formed to be extended toward the module body <NUM> (Specifically, toward the first vane link coupling part <NUM>) from the first vane link body <NUM> and at which the <NUM>-<NUM> vane link shaft is disposed.

The <NUM>-<NUM> vane link shaft <NUM> protrudes toward the first vane <NUM>. the <NUM>-<NUM> vane link shaft <NUM> may be assembled with the first vane <NUM> and may rotate relatively to the first vane <NUM>.

The <NUM>-<NUM> vane link shaft <NUM> is assembled to the link installation part <NUM> of the module body <NUM>. Specifically, the <NUM>-<NUM> vane link shaft <NUM> may be assembled to the first vane link coupling part <NUM> and may rotate relatively to the first vane link coupling part <NUM>.

The <NUM>-<NUM> vane link shaft <NUM> and the <NUM>-<NUM> vane link shaft <NUM> protrude in directions opposite to each other. Therefore, the <NUM>-<NUM> vane link shaft installation part <NUM> and the <NUM>-<NUM> vane link shaft installation part <NUM> are arranged to face in the directions opposite to each other.

In the present embodiment, a longitudinal direction of the first vane link body <NUM> and a disposition direction of the <NUM>-<NUM> vane link shaft installation part <NUM> are orthogonal, and a longitudinal direction of the first vane link body <NUM> and a disposition direction of the <NUM>-<NUM> vane link shaft installation part <NUM> are orthogonal.

The <NUM>-<NUM> vane link shaft installation part <NUM> is formed in a disk shape. the <NUM>-<NUM> vane link shaft installation part <NUM> is formed to be wider than a diameter of the <NUM>-<NUM> vane link shaft <NUM>. the <NUM>-<NUM> vane link shaft installation part <NUM> is in close contact with the first vane <NUM> and may support the first vane <NUM>.

the <NUM>-<NUM> vane link shaft <NUM> is a shaft rotation structure for rotation with the first vane <NUM>. the <NUM>-<NUM> vane link shaft <NUM> is a shaft rotation structure for rotation with the link installation part <NUM>.

The support bar <NUM> is assembled or coupled to the <NUM>-<NUM> vane link shaft <NUM>. The support bar <NUM> couples the support bracket <NUM> and the first vane link <NUM>.

<FIG> is a perspective view of the second vane link shown in <FIG>. Referring to <FIG>, in the present embodiment, the second vane link <NUM> is formed of a robust material.

The second vane link <NUM> includes a second vane link body <NUM>, the <NUM>-<NUM> vane link shaft <NUM> disposed at one side of the second vane link body and assembled with the second vane <NUM> and rotating relatively to the second vane <NUM>, the <NUM>-<NUM> vane link installation part <NUM> extended from the second vane link body <NUM> toward the second vane <NUM> and at which the <NUM>-<NUM> vane link shaft <NUM> is disposed, and the <NUM>-<NUM> vane link shaft part <NUM> disposed at the other side of the second vane link body <NUM> and assembled with the driving link <NUM> (Specifically, with the second driving link shaft <NUM>) and rotating relatively to the driving link <NUM>.

In the present embodiment, the <NUM>-<NUM> vane link shaft part <NUM> is formed in tescepae of a hole piercing the second vane link body <NUM>. the <NUM>-<NUM> vane link shaft part <NUM> and the second driving link shaft <NUM> are assembled to each other to provide a shaft rotation structure capable of relative rotation.

So, if any one of the <NUM>-<NUM> vane link shaft part <NUM> and the second driving link shaft <NUM> is formed in the shape of a shaft, the other may be formed in the shape, providing a center of rotation, of a hole or a boss. Unlike the present embodiment, the <NUM>-<NUM> vane link shaft may be formed in the shape of a shaft, and the second driving link shaft may be formed in the shape of a hole.

In all elements capable of relative rotation by being combined with the driving link, the first vane link, and the second vane link, replacement of such elements is possible, and a deformable example thereof will not be described in detail.

The <NUM>-<NUM> vane link shaft <NUM> protrudes toward the second vane <NUM>. the <NUM>-<NUM> vane link shaft <NUM> may be assembled with the second vane <NUM> and may rotate relatively to the second vane <NUM>.

In the present embodiment, a longitudinal direction of the second vane link body <NUM> and a disposition direction of the <NUM>-<NUM> vane link shaft installation part <NUM> are orthogonal.

The <NUM>-<NUM> vane link shaft installation part <NUM> is formed in a disk shape. the <NUM>-<NUM> vane link shaft installation part <NUM> is formed to be wider than a diameter of the <NUM>-<NUM> vane link shaft <NUM>. the <NUM>-<NUM> vane link shaft installation part <NUM> may be in close contact with the second vane <NUM> and may support the second vane <NUM>.

The <NUM>-<NUM> vane link shaft <NUM> is a shaft rotation structure for relative rotation with the second vane <NUM>. the <NUM>-<NUM> vane link shaft <NUM> is formed in a cylindrical structure.

In the present embodiment, the <NUM>-<NUM> vane link shaft part <NUM> is formed in tescepae of a hole penetrating the second vane link body <NUM>. The second driving link shaft <NUM> of the driving link <NUM> is assembled to the <NUM>-<NUM> vane link shaft part <NUM>. The second driving link shaft <NUM>, in a state assembled with the <NUM>-<NUM> vane link shaft part <NUM>, may rotate relatively.

<FIG> is a perspective view showing the sag preventing structure of the first vane shown in <FIG>. <FIG> is a cross-sectional view showing the coupling structure of a link installation unit. <FIG> is a perspective view showing the first vane link and the support bar which are shown in <FIG>. <FIG> is a perspective view showing the support link and the support bar which are shown in <FIG>.

Referring to <FIG> and <FIG>, one side of the support link <NUM> is relatively rotatably assembled with a support rib <NUM> of the first vane <NUM>,and the other side is relatively rotatably assembled with the assembly part <NUM> of the support bracket <NUM>. The one side of the support link <NUM> is positioned above the other side thereof.

The entire structure of the support link <NUM> is similar to that of the first vane link <NUM>.

The support link <NUM> includes a first support link body <NUM> formed of a robust material, a first support link shaft <NUM> disposed at one side (In the present embodiment, at lower side) of the first support link body <NUM> and assembled with the first vane <NUM> (Specifically, with the support rib <NUM>) and rotating relatively to the first vane <NUM>, and a second support link shaft <NUM> disposed at the other side (In the present embodiment, at upper side) of the first support link body <NUM> and assembled with the support bracket <NUM> (Specifically, with the assembly part <NUM>) and rotating relatively to the support bracket <NUM>.

The support link <NUM> further includes a first support link shaft installation part <NUM> disposed at one side of the first support link body <NUM> and at which the first support link shaft <NUM> is disposed, and a second support link shaft installation part <NUM> disposed at the other side of the support link body <NUM> and at which the second support link shaft <NUM> is disposed.

The first support link shaft <NUM> and the second support link shaft <NUM> protrude in an opposite direction with respect to the first support link body <NUM>.

In addition, the <NUM>-<NUM> vane link shaft <NUM> and the second support link shaft <NUM> protrude in directions opposite to each other, and the support bar <NUM> is disposed between the <NUM>-<NUM> vane link shaft <NUM> and the second support link shaft <NUM>.

In the present embodiment, the support bar <NUM> is disposed between the second support link shaft installation part <NUM> and the <NUM>-<NUM> vane link shaft installation part <NUM>.

In particular, one end of the support bar <NUM> is coupled to the <NUM>-<NUM> vane link shaft installation part <NUM>, and the other side of the support bar <NUM> is coupled to the second support link shaft installation part <NUM>. The support bar <NUM> is respectively coupled to the second support link shaft installation part <NUM> and the <NUM>-<NUM> vane link shaft installation part <NUM>, and it is preferable not to rotate relatively.

The support bar <NUM>, the second support link shaft installation part <NUM>, and the <NUM>-<NUM> vane link shaft installation part <NUM> are coupled in one body, thereby it is possible to transmit, to the support link <NUM>, the rotational force of the first vane link <NUM>.

Since the rotational force of the first vane link <NUM> is transmitted to the support link <NUM> through the support bar <NUM>, torsion in a longitudinal direction of the first vane <NUM> may be minimized.

Since the first vane <NUM> is supported by the support bracket <NUM> through the support bar <NUM>, sagging of the first vane <NUM> may be suppressed.

It is preferable to make a length between the first support link shaft <NUM> and the second support link shaft <NUM> and a length between the <NUM>-<NUM> vane link shaft <NUM> and the <NUM>-<NUM> vane link shaft <NUM> equal.

In addition, it is preferable that the first support link shaft <NUM> and the <NUM>-<NUM> vane link shaft <NUM> are disposed at the same height based on a bottom surface of the front body <NUM> or the suction hole <NUM>.

It is enough that only one support bracket <NUM> and only one support bar <NUM> are disposed. In the present embodiment, to actively suppress sagging of the first vane <NUM>, the support bracket <NUM> and the support bar <NUM> are disposescendedyely on one side and the other side of the first vane <NUM>.

When the classification of a plurality of support brackets <NUM>, support bars <NUM>, and the support links <NUM> is needed, those disposed at one side (In the present embodiment, the first module body side) of discharging hole are referred to as the first support bracket <NUM>, a first support bar <NUM>, and a first support link <NUM>, and those disposed at the other side 9In the present embodiment, the second module body side) of the discharging hole are referred to as the second support bracket, a second support bar, and the second support link <NUM>.

The first support link <NUM> is disposed close to the one side between the one side and the other side of the discharging hole, and the second support link <NUM> is disposed close to the other side between one side and the other side of the discharging hole.

The first support link <NUM> is relatively rotatably assembled with the first vane <NUM> and the first support bracket <NUM>, and the second support link <NUM> is relatively rotatably assembled with the first vane <NUM> and the second support bracket <NUM>.

And the first support bar <NUM> is coupled to the one side first vane link and the first support link <NUM>, and the second support bar <NUM> is coupled to the other side first vane link and the second support link <NUM>.

The first support bar <NUM> and the second support bar <NUM> are arranged in a line. The first support bar <NUM> and the second support bar <NUM> are disposed at the same height with respect to the first vane <NUM>.

And the first support bar <NUM> is disposed at the front further than the one side driving link, and the second support bar <NUM> is disposed at the front further than the other driving link.

Referring to <FIG> or <FIG>, the first vane <NUM> is disposed between the link installation part <NUM> of the first module body <NUM> and the link installation part <NUM> of the second module body <NUM>.

When the indoor unit does not operate, the first vane <NUM> covers most of the discharging hole <NUM>. Unlike the present embodiment, the first vane <NUM> may be manufactured to cover the entire discharging hole <NUM>.

The first vane <NUM> is coupled to the driving link <NUM> and the first vane link <NUM>.

The driving link <NUM> and the first vane link <NUM> are disposed on one side and the other side of the first vane <NUM>, respectively.

The first vane <NUM> relatively rotates to the driving link <NUM> and the first vane link <NUM>, respectively.

When it is needed to distinguish positions of the driving link <NUM> and the first vane link <NUM>, the driving link <NUM> coupled to the first module body <NUM> is referred to as the first driving link, and the first vane link <NUM> coupled to the first module body <NUM> is defined as the <NUM>-<NUM> vane link. The driving link <NUM> coupled to the second module body <NUM> is referred to as the second driving link, and the first vane link <NUM> coupled to the second module body <NUM> is defined as the <NUM>-<NUM> vane link.

The first vane <NUM> includes the first vane body <NUM> formed to extend in the longitudinal direction of the discharging hole <NUM>, and the joint rib <NUM> protruding upwardly from the first vane body <NUM> and coupled to the driving link <NUM> and the first vane link <NUM>.

The first vane body <NUM> controls the direction of air discharged along the discharging flow path <NUM>. The discharged air may collide with an upper or a lower surface of the first vane body <NUM> to be guided in the flow direction. The discharging direction of air and a longitudinal direction of the first vane body <NUM> are orthogonal or intersected.

A bottom surface of the first vane body <NUM> is formed in a flat or curved surface, and various structures including the joint rib <NUM> are disposed on an upper surface thereof. A plane of the first vane body <NUM> corresponds to a shape of the discharging hole <NUM>.

The joint rib <NUM> is an installation structure for coupling the driving link <NUM> and the first vane link <NUM>. The joint ribs <NUM> are disposed on one side and the other side of the first vane <NUM>, respectively.

The joint rib <NUM> is formed to protrude upwardly from an upper surface of the first vane body <NUM>. The joint rib <NUM> is formed along the flow direction of the discharged air and minimizes resistance to the discharged air. So, the joint rib <NUM> is orthogonal to or crosses the longitudinal direction of the first vane body <NUM>.

The joint rib <NUM> is formed to have a side (forward), with high height, in the direction that air is discharged and a side (backward), with low height, in the direction that air is introduced. In the present embodiment, the joint rib <NUM> is formed to have a side, with high height, to which the driving link <NUM> is coupled and a side, with low height, to which the first vane link <NUM> is coupled.

The joint rib <NUM> includes a second joint part <NUM> rotatably coupled to the driving link <NUM>, and a first joint part <NUM> rotatably coupled to the first vane link <NUM>.

The joint rib <NUM> may be manufactured with the first vane body <NUM> as one body.

In the present embodiment, the first joint part <NUM> and the second joint part <NUM> are formed of the shape of a hole and penetrates the joint rib <NUM>. The first joint part <NUM> and the second joint part <NUM> have a structure capable of shaft coupling or hinge coupling and may be deformed in various shapes.

When viewed from the front, the second joint part <NUM> is positioned higher than the first joint part <NUM>.

The second joint part <NUM> is positioned at the rear further than the first joint part <NUM>. The first driving link shaft <NUM> is assembled to the second joint part <NUM>. The second joint part <NUM> and the first driving link shaft <NUM> are relatively rotatably assembled. In the present embodiment, the first driving link shaft <NUM> is assembled by passing through the second joint part <NUM>.

The <NUM>-<NUM> vane link shaft <NUM> is assembled to the first joint part <NUM>.

The first joint part <NUM> and the <NUM>-<NUM> vane link shaft <NUM> are relatively rotatably assembled. In the present embodiment, the <NUM>-<NUM> vane link shaft <NUM> passes through the first joint <NUM> and is assembled with each other.

When viewed from the top, the driving link <NUM> and the first vane link <NUM> are disposed between the joint rib <NUM> and the link installation part <NUM>. In the present embodiment, a distance between the first joint part <NUM> and the second joint part <NUM> is formed to be narrower than a distance between the core link shaft <NUM> and the <NUM>-<NUM> vane link shaft <NUM>.

Two joint ribs <NUM> are disposed at the first vane <NUM>. When it is needed to distinguish the two joint ribs <NUM> disposed at the first vane <NUM>, when viewed from the front of the vane module, the joint rib <NUM> disposed at the left side is defined as the left joint rib, and the joint rib disposed at the right side of the vane module is defined as the right joint rib.

The support rib <NUM> is disposed between the left joint rib and the right joint rib. In the present embodiment, since a plurality of support ribs <NUM> are disposed, the support ribs <NUM> disposed on the left are referred to as left support rib, and the support rib <NUM> disposed on the right are referred to as right support rib.

Referring to <FIG> or <FIG>, the second vane <NUM> is formed to have a smaller area than the first vane <NUM>. When controlling the discharging direction of air, the second vane <NUM> has less influence than the first vane <NUM>. In the present embodiment, the first vane <NUM> operates as a main vane controlling the discharging direction of air, and the second vane <NUM> operates as a sub vane.

The second vane <NUM> is installed on the discharging flow path <NUM> and rotates in place with respect to the second vane shaft <NUM>. The front end 222a of the second vane <NUM> may be positioned outside the discharging hole <NUM> depending on the rotation angle of the second vane <NUM>.

In the present embodiment, the second vane <NUM> is formed of a transparent or translucent material.

The second vane <NUM> includes a second vane body <NUM> formed to extend long in the longitudinal direction of the discharging hole <NUM>, a joint rib <NUM> protruding upwardly from the second vane body <NUM> and relatively rotatably coupled with the second vane link <NUM>, and a pair of the second vane shaft <NUM> formed at one side and the other side of the second vane body <NUM> and rotatably coupled with the link installation part <NUM> (Specifically, with the second vane coupling part <NUM>).

The second joint rib <NUM> is relatively rotatably coupled to the second vane link <NUM>. A hole formed in the second joint rib <NUM> and relatively rotatably coupled to the second vane link <NUM> is defined as a third joint part <NUM>.

The second joint rib <NUM> is formed to protrude upwardly from an upper surface of the second vane body <NUM>. It escendedble that the second joint rib <NUM> is formed along the flow direction of the discharged air. Therefore, the second joint rib <NUM> is disposed to be orthogonal to or intersecting with a longitudinal direction of the second vane body <NUM>.

The second vane <NUM> may be rotated relatively with respect to the second joint rib <NUM>, and may be rotated relatively to the second vane shaft <NUM>. That is, the second vane <NUM> may rotate relatively at each of the second joint rib <NUM> and the second vane shaft <NUM>.

When viewed from the top, the second joint rib <NUM> is positioned in front of the second vane shaft <NUM>. The second joint rib <NUM> moves in a constant orbit around the second vane shaft <NUM>.

Two second joint ribs <NUM> are disposed at the second vane <NUM>.

A bottom surface of the second vane body <NUM> may be formed in a gentle curved surface.

The second vane body <NUM> controls the direction of the discharged air along the discharging flow path <NUM>. The discharged air collides with the upper or an lower surface of the second vane body <NUM> to be guided in the flow direction.

The second vane shaft <NUM> is positioned behind the second joint rib <NUM>. The second vane link <NUM>, the driving link <NUM>, and the first vane link <NUM> are sequentially disposed in front of the second vane shaft <NUM>.

In addition, the driving link coupling part <NUM> and the first vane link coupling part <NUM> are sequentially disposed in front of the second vane coupling part <NUM>.

<FIG> is a perspective view of the vane module, which is not in operation, according to the first embodiment of the present invention. <FIG> is a perspective view of the vane module, in horizontal wind state, according to the first embodiment of the present invention. <FIG> is a perspective view of the vane module, in vertical wind state, according to the first embodiment of the present invention.

When the indoor unit does not operate in the present embodiment (when an indoor blower does not operate), in each vane module <NUM>, as shown, the second vane <NUM> is positioned above the first vane <NUM>, and the first vane <NUM> covers the discharging hole <NUM>. A lower surface of the first vane <NUM> forms a continuous surface with the lower side of the suction grill <NUM> and with the lower surface of the side cover <NUM>.

When the indoor unit does not operate, since the second vane <NUM> is located above the first vane <NUM>, it is in a hidden state when viewed from the outside. The second vane <NUM> is exposed to the user only when the indoor unit operates. Thus, the second vane <NUM> is positioned on the discharging flow path <NUM> when the indoor unit does not operate, and the first vane <NUM> covers most of the discharging hole <NUM>.

In the present embodiment, the first vane <NUM> covers only most of the discharging hole <NUM>, but the first vane <NUM> may be formed to entirely cover the discharging hole <NUM> according to the design.

When the indoor unit is stopped and the vane module <NUM> is not operated is defined as a stop step P0.

<FIG> is an example drawing of discharging step P0 of the vane module according to the first embodiment of the present invention.

Referring to <FIG> and <FIG>, at the stop step P0, the vane module <NUM> is not in operation. When the indoor unit does not operate, the vane module <NUM> maintains the state of stop step P0.

In the state of stop step P0, the vane motor <NUM> of the vane module <NUM> rotates the driving link <NUM> to the maximum in a first direction (Clockwise, in the drawing of the present embodiment).

In this case, the second driving link body <NUM> constituting the driving link <NUM> is supported by one side end <NUM> of the stopper <NUM>, and further rotation in the first direction is restricted.

To prevent over-rotation of the driving link <NUM>, at the stop step P0, the second driving link body <NUM> and the other end 270b of the stopper <NUM> interfere with each other. The second driving link body <NUM> is supported by the stopper <NUM>, and further rotation is restricted.

The driving link <NUM> is rotated in the first direction around the core link shaft <NUM>, and the first vane link <NUM> is rotated in the first direction around the <NUM>-<NUM> vane link shaft <NUM>.

The first vane <NUM> is rotated while being constrained by the driving link <NUM> and the first vane link <NUM>, and is positioned in the discharging hole <NUM>. The lower side of the first vane <NUM> forms a continuous surface with a suction panel <NUM> and the side cover <NUM>.

In the state of stop step P0, the second vane <NUM> is positioned above the first vane <NUM>. When viewed on the plane, the second vane <NUM> is positioned between the first joints <NUM> and is positioned above the first vane body <NUM>.

And, in the state of stop step P0, the driving link <NUM>, the first vane link <NUM> and the second vane link <NUM> are positioned above the first vane <NUM>. The driving link <NUM>, the first vane link <NUM>, and the second vane link <NUM> are covered by the first vane <NUM> and are not visible from the outside. That is, in the state of stop step P0, the first vane <NUM> covers the discharging hole <NUM> and blocks parts constituting the vane module <NUM> from being exposed to the outside.

In the state of stop step P0, the driving link <NUM> is rotated clockwise as far as possible, and the second vane link <NUM> is in a state raised to the maximum.

When the indoor unit does not operate, since the second vane <NUM> is positioned above the first vane <NUM>, it is in a hidden state when viewed from the outside. The second vane <NUM> is exposed to the user only when the indoor unit operates.

At the stop step P0, a relation of position of the shafts forming the centers of rotation of each link is as follows.

First, the first joint part <NUM> and the second joint part <NUM> of the first vane <NUM> are disposed approximately horizontally. The second joint rib <NUM> of the second vane <NUM> is positioned above the first joint rib <NUM>.

When viewed from the lateral side, the second joint rib <NUM> is positioned above the second joint part <NUM> and the first joint part <NUM> and is positioned between the first joint part <NUM> and the second joint part <NUM>.

And since the <NUM>-<NUM> vane link shaft <NUM> is coupled to the second joint rib <NUM>, the <NUM>-<NUM> vane link shaft <NUM> is also positioned above the second joint part <NUM> and the first joint part <NUM>.

The first joint part <NUM> and the second joint part <NUM> are positioned above the first vane body <NUM> and are positioned below the second vane body <NUM>.

The <NUM>-<NUM> vane link shaft part <NUM> is positioned above the <NUM>-<NUM> vane link shaft <NUM> and is positioned above the core link shaft <NUM>.

Next, at the stop step P0, the relative positions and directions of the links are as follows.

Meanwhile, the first vane link <NUM> and the second vane link <NUM> are disposed in the same direction. The first vane link <NUM> and the second vane link <NUM> have an upper end positioned at a front of the discharging direction of air and have a lower end positioned at a rear of the discharging direction of air.

Specifically, the <NUM>-<NUM> vane link shaft <NUM> of the first vane link <NUM> is positioned at the front, and the <NUM>-<NUM> vane link shaft <NUM> of the first vane link <NUM> is positioned at the rear. The <NUM>-<NUM> vane link shaft <NUM> of the first vane link <NUM> is positioned higher than the <NUM>-<NUM> vane link shaft <NUM>. The first vane link <NUM> is disposed to be inclined downwardly to the rear with respect to the <NUM>-<NUM> vane link shaft <NUM>.

Likewise, the <NUM>-<NUM> vane link shaft part <NUM> of the second vane link <NUM> is positioned at the front, and the <NUM>-<NUM> vane link shaft <NUM> of the second vane link <NUM> is positioned at the rear. The <NUM>-<NUM> vane link shaft part <NUM> of the second vane link <NUM> is positioned higher than the <NUM>-<NUM> vane link shaft <NUM>. The second vane link <NUM> is disposed to be inclined downwardly to the rear with respect to the <NUM>-<NUM> vane link shaft <NUM>.

The first driving link body <NUM> of the driving link <NUM> is disposed in the same direction as the first vane link <NUM> and the second vane link <NUM>, and the second driving link body <NUM> crosses with the disposition direction of the first vane link <NUM> and the second vane link <NUM>.

<FIG> is an example drawing of discharging step P1 of the vane module according to the first embodiment of the present invention.

Referring to <FIG> and <FIG>, at the stop step P0, the discharging step P1 is provided by rotating the driving link <NUM> in a second direction (Counterclockwise, in the drawing of the present embodiment) opposite to the first direction.

In the state of the discharging step P1, the vane module <NUM> may provide a horizontal wind.

The air discharged from the discharging hole <NUM>, by being guided by the first vane <NUM> and the second vane <NUM>, thereby the horizontal wind may flow in a horizontal direction with the ceiling or the ground.

When the discharged air flows for a horizontal wind, the flow distance of air may be maximized.

In the state of the discharging step P1, upper surfaces of the first vane <NUM> and second vane <NUM> may form a continuous surface. In the state of the discharging step P1, the first vane <NUM> and the second vane <NUM> connect like one vane, and guide the discharged air.

In the present embodiment, the first vane <NUM> is disposed at the front of the flow direction of the discharged air, the second vane <NUM> is disposed at the rear of the flow direction of the discharged air. The front end 222a of the second vane <NUM> may be in close proximity or contact with a rear end 212b of the first vane <NUM>. In the state of the discharging step P1, a distance S1 between the front end 222a of the second vane <NUM> and the rear end 212b of the first vane <NUM> may be formed to the minimum.

In the state of the discharging step P1, the front end 222a of the second vane <NUM> is positioned higher than the rear end 212b of the first vane <NUM>.

By bringing the front end 222a and the rear end 212b close or in contact, the leakage of discharged air between the first vane <NUM> and the second vane <NUM> may be minimized.

In the present embodiment, the front end 222a and the rear end 212b are brought in close proximity, but not in contact.

And when the vane module <NUM> forms the horizontal wind at the discharging step P1, since the first vane <NUM> and the second vane <NUM> are connected and then operate as one vane, the strength of air current of the horizontal wind may be increased. That is, since the discharged air is guided by the upper surface of the second vane <NUM> and the upper surface of the first vane <NUM> in the horizontal direction, it is possible to reinforce the directionality of the discharged air, compared to forming the horizontal wind by one vane.

When forming the horizontal wind, the second vane <NUM> is disposed to be inclined, in the up and down direction, more than the first vane <NUM>.

In the case of the horizontal wind, when viewed from the lateral side, the first vane <NUM> is positioned lower than the discharging hole <NUM>, and it is advantageous that the second vane <NUM> is disposed to overlap with the discharging hole <NUM>.

In the discharging step P1 state, the second vane <NUM> is rotated in place around the second vane shaft <NUM>, but, since the first vane <NUM> is assembled with the driving link <NUM> and the first vane link <NUM>, it is swung in the discharging direction of air.

When proceeding from P0 to P1, the second vane <NUM> is rotated around the second vane shaft <NUM>, the first vane <NUM> descends downwardly while advancing in the discharging direction of air, and the front end 212a of the first vane is rotated in the first direction (Clockwise, in the drawing).

By rotation of the driving link <NUM> and the first vane link <NUM>, the first vane <NUM> may be moved to a lower side of the discharging hole <NUM>, and the first vane <NUM> may be disposed approximately horizontally. Since the vane of the prior indoor unit rotates in place, the disposition like the first vane <NUM> of the present embodiment can not be realized.

At the stop step P0, when the vane motor <NUM> rotates the driving link <NUM> in the second direction (Counterclockwise), the second vane link <NUM> coupled to the driving link <NUM> is also rotated to correspond to the driving link <NUM>.

Specifically, when changing from the stop step P0 to the discharging step P1, the driving link <NUM> is rotated counterclockwise, the first vane link <NUM> rotates counterclockwise as the driving link <NUM> rotates, and the second vane link <NUM> escendedded while being rotated relatively.

Since the second vane <NUM> is relatively rotatably assembled with the second vane shaft <NUM> and the second vane link <NUM>, the second vane <NUM> is rotated clockwise around the second vane shaft <NUM> by the descent of the second vane link <NUM>.

To form the horizontal wind, when changing from the stop step P0 to the discharging step P1, the directions of rotation of the first vane <NUM> and the second vane <NUM> are opposite.

At the discharging step P1, the vane motor <NUM> rotates <NUM> degrees (P1 rotational angle), the first vane <NUM> forms a slope (The first vane P1 slope) of approximately <NUM> degrees, and the second vane <NUM> forms a slope (The second vane P1 slope) of approximately <NUM> degrees.

In the discharging step P1, the relation of position of the axes forming the centers of rotation of each link is as follows.

First, unlike the P0, the second joint part <NUM> and the first joint part <NUM> of the first vane <NUM> are disposed to be inclined toward the front of the discharging direction of air. When viewed from the lateral side, the third joint part <NUM> of the second vane <NUM> is disposed at the rearmost, the first joint part <NUM> is disposed at the foremost, and the second joint part <NUM> is disposed between the first joint part <NUM> and the third joint part <NUM>.

At the P1 state, the third joint part <NUM>, the second joint part <NUM>, and the first joint part <NUM> are arranged in a row, and disposition directions thereof face forwardly downwardly the discharging direction of air. According to the embodiment, the third joint part <NUM>, the second joint part <NUM>, and the first joint part <NUM> may not be arranged in a line.

In addition, in the second vane shaft <NUM>, the third joint part <NUM>, the second joint part <NUM>, and the first joint part <NUM> may be arranged in a line. In this case, the second vane shaft <NUM> is positioned at a rear of the third joint part <NUM>.

In the P1 state, the first vane <NUM> and the second vane <NUM> provide the horizontal wind. The horizontal wind does not mean that the discharging direction of air is exactly horizontal. The first vane <NUM> and the second vane <NUM> are connected as one vane, and by the connection, the horizontal wind means having an angle at whith the discharged air flows farthest horizontally.

In the state of the discharging step P1, the distance S1 between the front end 222a of the second vane <NUM> and the rear end 212b of the first vane <NUM> may be formed to the minimum.

In the horizontal wind, the air guided by the second vane <NUM> is guided to the first vane <NUM>. By the P1 state, when the discharged air flows as the horizontal wind, the flow distance of air may be maximized.

Since the discharging flow path <NUM> is formed in the up and down direction, a slope of the second vane <NUM> close to the suction hole <NUM> is formed to be steeper than a slope of the first vane <NUM>.

And at the state of the discharging step P1, the <NUM>-<NUM> vane link shaft <NUM> of the first vane link <NUM> is positioned below the <NUM>-<NUM> vane link shaft <NUM>.

In the state of the discharging step P1, the <NUM>-<NUM> vane link shaft <NUM> of the second vane link <NUM> is positioned below the <NUM>-<NUM> vane link shaft part <NUM>.

In the state of the discharging step P1, the first driving link shaft <NUM> of the driving link <NUM> is positioned below the second driving link shaft <NUM> and the core link shaft <NUM>.

In the state of the discharging step P1, in the up and down direction, the third joint part <NUM> is positioned at the uppermost, the first joint part <NUM> is positioned at the lowermost, and the second joint part <NUM> is positioned therebetween.

In the state of the discharging step P1, the first joint part <NUM> and the second joint part <NUM> are positioned between the core link shaft <NUM> and the <NUM>-<NUM> vane link shaft <NUM>.

And in the state of the discharging step P1, the first driving link shaft <NUM> and the <NUM>-<NUM> vane link shaft <NUM> are positioned under the suction panel <NUM>. In the state of the discharging step P1, the first driving link shaft <NUM> and the <NUM>-<NUM> vane link shaft <NUM> are positioned below the discharging hole <NUM>. The <NUM>-<NUM> vane link shaft <NUM> is positioned across the boundary of the discharging hole <NUM>.

Due to this disposition, in the state of the discharging step P1, the first vane <NUM> is positioned below the discharging hole <NUM>. In the state of the discharging step P1, the front end 222a of the second vane <NUM> is positioned under the discharging hole <NUM>, the rear end 222b is positioned above the discharging hole <NUM>.

Next, in the state of the discharging step P1, the relative positions and directions of the links are as follows.

A longitudinal direction of the first driving link body <NUM> is defined as D-D'. A longitudinal direction of the first vane link <NUM> is defined as L1-L1'. A longitudinal direction of the second vane link <NUM> is defined as L2-L2'.

In the discharging step P1 state, the first vane link <NUM>, the second vane link <NUM>, and the first driving link body <NUM> are disposed in the same direction. In the present embodiment, the first vane link <NUM>, the second vane link <NUM>, and the first driving link body <NUM> are all arranged in the up and down direction in the state of the discharging step P1.

Specifically, L1-L1' of the first vane link <NUM> is disposed almost vertically, and L2-L2' of the second vane link <NUM> is also disposed almost vertically. D-D' of the first driving link body <NUM> is disposed to face downward in the discharging direction of air.

In the discharging step P1 state, the first vane <NUM> is positioned under the discharging hole <NUM>, the front end 222a of the second vane <NUM> is positioned below the discharging hole <NUM>. That is, in the horizontal wind, the second vane <NUM> is only partially positioned outside the discharging hole <NUM>, and the first vane <NUM> is positioned entirely outside the discharging hole <NUM>.

In the state of the discharging step P1, the front end 212a of the first vane <NUM> is positioned at the front side of the discharging hole <NUM> further than a front edge 102a of the discharging hole <NUM>.

Meanwhile, when the vane motor <NUM> operates further in the state of the discharging step P1, a vertical wind may be provided as shown in <FIG>. The horizontal wind means that the first vane <NUM> and the second vane <NUM> is disposed in the up and down direction than the discharging step P1.

The vertical wind does not mean that the first vanes <NUM> and the second vanes <NUM> constituting the vane module <NUM> are disposed exactly vertically, but means that air is discharged more vertically than the horizontal wind.

When the vane module <NUM> forms the vertical wind, the first vane <NUM> and the second vane <NUM> may be spaced apart to the maximum, and the discharged air may be directly discharged to the floor positioned vertically below by being guided by the first vane <NUM> and the second vane <NUM>.

In the present embodiment, the description was made based on the indoor unit of the ceiling type air conditioner in which four vane modules are disposed, but unlike the present embodiment, it is enough that only one or two vane modules are installed in the indoor unit of the ceiling type air conditioner.

Claim 1:
A ceiling type indoor unit of air conditioner comprising:
a case (<NUM>) on which a discharging hole (<NUM>) is formed;
a first vane (<NUM>) disposed at the discharging hole (<NUM>);
a vane motor (<NUM>) assembled to the case (<NUM>) and configured to provide a driving force to the first vane (<NUM>);
a driving link (<NUM>) assembled relatively rotatably with the case (<NUM>) and coupled with the vane motor (<NUM>) and configured to transmit the driving force of the vane motor (<NUM>) to the first vane (<NUM>);
a first vane link (<NUM>) assembled relatively rotatably with the case (<NUM>) and with the first vane (<NUM>);
a support bracket (<NUM>) coupled to the case (<NUM>) and disposed at the discharging hole (<NUM>);
a support link (<NUM>) disposed between one end and the other end in a longitudinal direction of the first vane (<NUM>) and assembled relatively rotatably with the first vane (<NUM>) and with the support bracket (<NUM>),
characterized in that
the driving link (<NUM>) comprises one side driving link disposed at one side of the discharging hole (<NUM>) and comprises the other side driving link disposed at the other side of the discharging hole (<NUM>),
wherein the first vane link (<NUM>) comprises one side first vane link disposed at the one side of the discharging hole (<NUM>) and comprises the other side first vane link disposed at the other side of the discharging hole (<NUM>),
wherein the support link (<NUM>) comprises a first support bracket (<NUM>) disposed close to the one side between the one side and the other side of the discharging hole (<NUM>) and comprises a second support bracket (<NUM>) disposed close to the other side,
wherein the support link (<NUM>) comprises a first support link (<NUM>) assembled relatively rotatably with the first vane (<NUM>) and the first support bracket (<NUM>) and comprises a second support link (<NUM>) assembled relatively rotatably with the first vane (<NUM>) and the second support bracket (<NUM>).