CN111295553B

CN111295553B - Ceiling type indoor unit of air conditioner

Info

Publication number: CN111295553B
Application number: CN201880071874.2A
Authority: CN
Inventors: 曺宇览; 尹炯男
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2017-09-06
Filing date: 2018-09-06
Publication date: 2021-08-20
Anticipated expiration: 2038-09-06
Also published as: CN113739400B; CN111566413B; CN111316045B; CN111295553A; ES2974022T3; CN114738986A; CN111566413A; EP3680571A4; CN114165912B; KR20190027345A; CN114738986B; CN111295554B; EP3680572A4; EP4332446A3; AU2018330128B2; AU2018327937A1; AU2018330131A1; KR102078277B1; AU2022228087A1; CN112204315A

Abstract

The invention provides an air conditioner. The method comprises the following steps: a front panel having a suction port and a discharge port; a lower discharge flow path communicating with the discharge port; a first blade disposed at the discharge port and assembled to the front panel; a second blade which is arranged at the position behind the first blade of the discharge port and is assembled on the front panel; a discharge guide extending in the vertical direction behind the second vane, the discharge guide including: a first guide surface located on an upper side of the second blade; a second guide surface extending downward from the first guide surface and inclined rearward on the upper side of the second blade; a third guide surface extending downward from the second guide surface, facing the second blade; and a fourth guide surface extending downward from the third guide surface and formed in a circular arc toward the second blade, the second guide surface being recessed rearward on the second blade to an expanded depth, a leakage space having a smaller cross-sectional area downward being formed between the third guide surface and the second blade and between the fourth guide surface and the second blade, and a recessed end being formed at a lower end of the fourth guide surface. The invention can provide horizontal wind, inclined wind and vertical wind through the first blade and the second blade.

Description

Ceiling type indoor unit of air conditioner

Technical Field

The present invention relates to a ceiling type indoor unit of an air conditioner, and more particularly, to a ceiling type indoor unit installed on an indoor ceiling.

Background

Generally, an air conditioner is composed of a compressor, a condenser, an evaporator, and an expander, and supplies cold air or hot air to a building or a room using an air conditioning cycle.

The air conditioner is structurally divided into a split type in which a compressor is disposed outdoors and an integrated type in which the compressor is integrally manufactured.

The split type is that an indoor heat exchanger is arranged in an indoor unit, an outdoor heat exchanger and a compressor are arranged in an outdoor unit, and two devices which are separated from each other are connected by a refrigerant pipe.

The integration is that the indoor heat exchanger, the outdoor heat exchanger and the compressor are arranged in a shell. As the integrated air conditioner, there are a window-mounted type air conditioner in which the device is directly mounted on a window, a duct type air conditioner in which a suction duct and a discharge duct are connected and mounted on the indoor and outdoor sides, and the like.

The split type air conditioner is generally classified according to an installation form of an indoor unit.

A vertical type air conditioner in which an indoor unit is vertically installed in an indoor space, a wall-hung type air conditioner in which an indoor unit is installed on an indoor wall, and a ceiling type indoor unit in which an indoor unit is installed on an indoor ceiling are known.

As one type of the split type air conditioner, there is a system air conditioner capable of supplying air-conditioned air to a plurality of spaces.

In the case of a system air conditioner, there are a type in which a plurality of indoor units are provided to air-condition the room, and a type in which air-conditioned air is supplied to each space through a duct.

The plurality of indoor units provided in the system air conditioner may be of any type such as a vertical type, a wall-hung type, or a ceiling type.

Ceiling type indoor unit of prior art includes: the shell is hung and installed on the ceiling wall; and a front panel covering the bottom surface of the housing and disposed on the same surface as the ceiling.

A suction port is disposed at the center of the front panel, a plurality of discharge ports are disposed outside the suction port, and discharge blades are provided at each discharge port.

In the ceiling type indoor unit of the prior art, the discharge blade arranged on the discharge port is rotated at the original position, so that the discharge air cannot be blown far in the horizontal direction.

Prior art documents

Patent document

Korean granted invention patent No. 10-0679838B1

Disclosure of Invention

Problems to be solved

The invention aims to provide a ceiling type indoor unit of an air conditioner, which can provide horizontal wind, oblique wind and vertical wind through a first blade and a second blade.

The invention aims to provide a ceiling type indoor unit of an air conditioner, which can operate like a single blade by connecting a first blade and a second blade when horizontal wind is provided.

The invention aims to provide a ceiling type indoor unit of an air conditioner, which can minimize air leakage between a second blade rotating at the original position and a discharge guide when a first blade and the second blade are used for providing horizontal wind.

The invention aims to provide a ceiling type indoor unit of an air conditioner, which can minimize return air that is discharged from a discharge port and is sucked into a suction port again.

The object of the present invention is not limited to the above-mentioned object, and other objects mentioned can be clearly understood by those skilled in the art from the following description.

Technical scheme for solving problems

The invention can provide horizontal wind, inclined wind and vertical wind through the first blade and the second blade.

The present invention can operate as one blade by connecting a first blade and a second blade when supplying horizontal wind.

The invention can minimize air leakage between the second blade rotating at the original position and the discharge guide when the first blade and the second blade are used for providing horizontal wind.

The invention can minimize the return air that the air discharged from the discharge port is sucked into the suction port again.

The invention comprises the following steps: the shell body is hung on an indoor ceiling, and the bottom surface of the shell body is open; a front panel covering the bottom surface of the housing case and having a suction port and a discharge port formed toward the lower side; a lower discharge flow path which communicates with the discharge port, is located above the discharge port, is formed in the front panel, and is arranged in the vertical direction; a first blade disposed at the discharge port, provided on the front panel, relatively rotatably attached to the front panel, and positioned forward in a discharge direction of the air discharged from the discharge port; a second blade disposed at the discharge port, provided on the front panel, assembled to the front panel so as to be relatively rotatable, and disposed between the suction port and the first blade; and a discharge guide disposed between the suction port and the discharge port, and disposed along a vertical direction, forming a part of the lower discharge flow path, wherein a distance between an end of the second blade on a rear side and the discharge guide is longer than a distance between a lower end of the discharge guide and a bottom surface of the second blade in a horizontal direction.

A cross-sectional area between a rear end of the second vane and the discharge guide may be wider than a cross-sectional area between a lower end of the discharge guide and a bottom surface of the second vane in a horizontal direction.

The discharge guide may be formed as the lower discharge flow path, be positioned on the suction port side of the lower discharge flow path, and be recessed from the lower discharge flow path toward the suction port side, and an end of the second blade on the rear side may be positioned on the recessed portion in the vertical direction.

The spit-out guide may include: a first guide surface exposed to the lower discharge flow path and positioned at the uppermost side; a second guide surface exposed to the lower discharge flow path, continuous with the first guide surface, and located below the first guide surface; a third guide surface exposed to the lower discharge flow path, continuous with the second guide surface, and located below the second guide surface; and a fourth guide surface exposed to the lower discharge flow path, continuous with the third guide surface, and located below the third guide surface, wherein the third guide surface is disposed closer to the suction port side than the first guide surface, and the second guide surface and the third guide surface form an expansion depth T that is recessed concavely toward the suction port side.

The rear end of the second vane may be located at a height of the third guide surface in the vertical direction.

The cross-sectional area between the bottom surface of the second vane and the discharge guide may gradually become narrower as the third guide surface approaches the fourth guide surface.

The first guide surface and the third guide surface may be formed perpendicularly.

A lower end of the fourth guide surface may be projected toward the second blade side, and the fourth guide surface may be formed as a gently curved surface.

The present invention may further comprise: a vane motor assembled to the front panel for providing a driving force; a driving coupling member which is assembled to the front panel so as to be relatively rotatable, is coupled to the vane motor, rotates by a driving force of the vane motor, and includes a first driving coupling member body and a second driving coupling member body which form a predetermined angle; a first blade coupling member which is positioned on the front side of the drive coupling member and is assembled to the module body and the first blade so as to be rotatable relative to each other; and a second blade coupling rotatably assembled with the second drive coupling body and the second blade, respectively.

The second blade may include: a second vane body formed to extend long in a longitudinal direction of the discharge port; a second engagement rib projecting upward from the second blade body, being relatively rotatably combined with the second blade coupling; and a pair of second vane shafts formed on the second vane body and rotatably coupled to the front panel, the second vane shafts being located below the second guide surface.

When the first blade and the second blade provide the discharge step P1 which is one of the plurality of discharge steps, the rear end of the second blade may be located above the discharge port, the front end of the second blade may be located below the discharge port, the rear end of the first blade may be located below the front end of the second blade, and the front end of the first blade may be located below the rear end of the first blade.

A sectional area between the rear-side end of the second vane and the third guide surface may be wider than a sectional area between the lower end of the fourth guide surface and the bottom surface of the second vane in the horizontal direction.

When the first blade and the second blade provide the discharge step P1 which is one of the plurality of discharge steps, the rear end of the second blade may be located above the discharge port, the front end of the second blade may be located below the discharge port, the rear end of the first blade may be located below the front end of the second blade, the front end of the first blade may be located below the rear end of the first blade, and a cross-sectional area between the rear end of the second blade and the third guide surface may be wider than a cross-sectional area between the lower end of the fourth guide surface and the bottom surface of the second blade.

A leakage space may be formed between the bottom surface of the second vane and the discharge guide in the horizontal direction, and a horizontal cross-sectional area of the leakage space may gradually decrease from an upper side to a lower side of the leakage space.

The present invention may further comprise: an indoor heat exchanger disposed inside the outer case to exchange heat between the air sucked into the suction port and the refrigerant; and a drain pan supporting a lower portion of the indoor heat exchanger and storing condensed water generated in the indoor heat exchanger, wherein the discharge guide is formed at the drain pan.

Technical effects

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

First, in the present invention, since the cross-sectional area of the leakage space formed between the second vane and the discharge guide is gradually narrowed toward the lower side, the discharge air can be suppressed from entering the leakage space by the pressure difference.

Secondly, in the present invention, in the discharge step P1 in which the interval between the second blade and the discharge guide is formed to be the widest, the cross-sectional area of the leakage space is formed to be gradually narrowed, and thus return air for causing the discharge air to flow again to the suction port can be suppressed.

Thirdly, in the present invention, since the discharge guide is recessed to the suction port side to form the expansion depth T, the pressure difference in the leakage space can be effectively realized.

Drawings

Fig. 1 is a perspective view showing an indoor unit of an air conditioner according to an embodiment of the present invention.

Fig. 2 is a sectional view of fig. 1.

Fig. 3 is an exploded perspective view illustrating the front panel of fig. 1.

Fig. 4 is a perspective view illustrating the top of the front panel of fig. 1.

Fig. 5 is a perspective view of the blade module shown in fig. 3.

Fig. 6 is a perspective view seen from another direction of fig. 5.

Fig. 7 is a perspective view of the blade module as viewed from the upper side of fig. 5.

FIG. 8 is a front view of the blade module shown in FIG. 3.

FIG. 9 is a rear view of the blade module shown in FIG. 3.

FIG. 10 is a top view of the blade module shown in FIG. 3.

Fig. 11 is a perspective view showing an operation structure of the blade module shown in fig. 5.

Fig. 12 is a front view of the drive coupling shown in fig. 11.

FIG. 13 is a front view of the first blade coupling shown in FIG. 11.

FIG. 14 is a front view of the second blade link illustrated in FIG. 11.

FIG. 15 is a side cross-sectional view of the blade module shown in FIG. 2.

Fig. 16 is an illustration of the discharge step P1 according to the first embodiment of the present invention.

Fig. 17 is an illustration of the discharge step P2 according to the first embodiment of the present invention.

Fig. 18 is an illustration of the discharge step P3 according to the first embodiment of the present invention.

Fig. 19 is an illustration of the discharge step P4 according to the first embodiment of the present invention.

Fig. 20 is an illustration of the discharge step P5 according to the first embodiment of the present invention.

Fig. 21 is an illustration of the discharge step P6 according to the first embodiment of the present invention.

Fig. 22 is an enlarged view showing the second blade and the discharge guide shown in fig. 16.

Fig. 23 is a graph showing the air flow in the discharge port of the first embodiment of the present invention.

Detailed Description

The advantages, features and methods for achieving the same of the present invention will be more apparent by referring to the drawings and detailed embodiments described later. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms, and the embodiments are only for the purpose of more fully disclosing the present invention, so as to more fully suggest the scope of the present invention to those skilled in the art to which the present invention pertains, and the present invention is defined only by the scope of the claims. Throughout the specification, like reference numerals denote like structural elements.

The present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 is a perspective view showing an indoor unit of an air conditioner according to an embodiment of the present invention. Fig. 2 is a sectional view of fig. 1. Fig. 3 is an exploded perspective view illustrating the front panel of fig. 1. Fig. 4 is a perspective view illustrating the top of the front panel of fig. 1. Fig. 5 is a perspective view of the blade module shown in fig. 3. Fig. 6 is a perspective view seen from another direction of fig. 5. Fig. 7 is a perspective view of the blade module as viewed from the upper side of fig. 5. FIG. 8 is a front view of the blade module shown in FIG. 3. FIG. 9 is a rear view of the blade module shown in FIG. 3. FIG. 10 is a top view of the blade module shown in FIG. 3. Fig. 11 is a perspective view showing an operation structure of the blade module shown in fig. 5. Fig. 12 is a front view of the drive coupling shown in fig. 11. FIG. 13 is a front view of the first blade coupling shown in FIG. 11. FIG. 14 is a front view of the second blade link illustrated in FIG. 11. FIG. 15 is a side cross-sectional view of the blade module shown in FIG. 2. Fig. 16 is an illustration of the discharge step P1 according to the first embodiment of the present invention. Fig. 17 is an illustration of the discharge step P2 according to the first embodiment of the present invention. Fig. 18 is an illustration of the discharge step P3 according to the first embodiment of the present invention. Fig. 19 is an illustration of the discharge step P4 according to the first embodiment of the present invention. Fig. 20 is an illustration of the discharge step P5 according to the first embodiment of the present invention. Fig. 21 is an illustration of the discharge step P6 according to the first embodiment of the present invention. Fig. 22 is an enlarged view showing the second blade and the discharge guide shown in fig. 16. Fig. 23 is a graph showing the air flow in the discharge port of the first embodiment of the present invention.

< construction of indoor Unit >

The indoor unit of an air conditioner of the present embodiment includes: a casing 100 having a suction port 101 and a discharge port 102; an indoor heat exchanger 130 disposed inside the housing 100; and an indoor fan 140 disposed inside the casing 100 and configured to flow air to the suction port 101 and the discharge port 102.

< construction of housing >

In the present embodiment, the housing 100 includes a housing case 110 and a front panel 300. The housing case 100 is hung from an indoor ceiling by a hanger (not shown), and is formed to have an open lower side. The front panel 300 covers the open surface of the casing 110 and is disposed facing the floor of the room, and the front panel 300 is exposed to the room and has the suction port 101 and the discharge port 102.

The housing 100 may be implemented in various ways according to the manufacturing form, and the structure of the housing 100 is not limited to the technical idea of the present invention.

The suction port 101 is disposed at the center of the front panel 300, and the discharge port 102 is disposed outside the suction port 101. The number of the suction ports 101 or the number of the discharge ports 102 is not related to the technical idea of the present invention. In this embodiment, one suction port 101 is formed, and a plurality of discharge ports 102 are arranged.

In this embodiment, the suction port 101 is formed in a quadrangular shape when viewed from the bottom, and four discharge ports 102 are disposed at predetermined intervals from the respective edges of the suction port 101.

< construction of indoor Heat exchanger >

The indoor heat exchanger 130 is disposed between the suction port 101 and the discharge port 102, and the indoor heat exchanger 130 divides the interior of the casing 100 into an inner side and an outer side. The indoor heat exchanger 130 is configured in a vertical manner in the present embodiment.

An indoor blowing fan 140 is disposed inside the indoor heat exchanger 130.

The indoor heat exchanger is formed in a shape of a "port" as a whole in a plan view or a bottom view, and a part of a section thereof may be separated.

The indoor heat exchanger 130 is configured to allow air discharged from the indoor blowing fan 140 to enter in a vertical manner.

A drain pan 132 is provided inside the housing 100, and the indoor heat exchanger 130 is placed on the drain pan 132. The condensed water generated from the indoor heat exchanger 130 may be stored after flowing to the drain pan 132. A drain pump (not shown) for discharging the collected condensed water to the outside is disposed in the drain pan 132.

The drain pan 132 may be formed with a directional inclined surface so as to collect and store the condensed water flowing down from the indoor heat exchanger 130 to one side.

< construction of indoor Fan >

The indoor blowing fan 140 is positioned inside the casing 100 and is disposed above the suction port 101. The indoor fan 140 is a centrifugal fan that sucks air into the center and discharges the air in the circumferential direction.

The indoor blowing fan 140 includes a bell mouth 142, a fan 144, and a fan motor 146.

The bell mouth 142 is disposed above the suction grill 320 and below the fan 144. The bell mouth 142 guides the air passing through the suction grill 320 toward the fan 144.

The fan motor 146 rotates the fan 144. The fan motor 146 is fixed to the housing case 110. The fan motor 146 is disposed above the fan 144. At least a portion of the fan motor 146 is located at a higher elevation than the fan 144.

The fan motor 146 is disposed with a motor shaft facing downward, and the fan 144 is coupled to the motor shaft.

The indoor heat exchanger 130 is disposed outside the edge of the fan 144. The fan 144 and at least a portion of the indoor heat exchanger 130 are disposed on the same horizontal line. Further, at least a part of the bell mouth 142 is inserted into the fan 144. At least a portion of the bell mouth 142 overlaps the fan 144 in the up-down direction.

< construction of flow channel >

The indoor heat exchanger 130 is disposed inside the outer case 110, and divides an inner space of the outer case 110 into an inner side and an outer side.

The inner space surrounded by the indoor heat exchanger 130 is defined as an intake flow path 103, and the outer space of the indoor heat exchanger 130 is defined as a discharge flow path 104.

The indoor fan 140 is disposed in the suction passage 103. The discharge flow path 104 is between the outside of the indoor heat exchanger 130 and the side wall of the casing 110.

The suction flow path 103 is an inner side surrounded by the "port" of the indoor heat exchanger in a plan view or a bottom view, and the discharge flow path 104 is an outer side of the "port" of the indoor heat exchanger.

The suction channel 103 communicates with the suction port 101, and the discharge channel 104 communicates with the discharge port 103.

The air flows from the lower side to the upper side of the inhalation flow path 103 and flows from the upper side to the lower side of the discharge flow path 104. The flow direction of the air is switched by 180 degrees with respect to the indoor heat exchanger 130.

The suction port 101 and the discharge port 102 are formed on the same surface of the front panel 300.

The suction port 101 and the discharge port 102 are disposed so as to face in the same direction. In the present embodiment, the suction port 101 and the discharge port 102 are disposed so as to face the floor surface in the room.

When the front plate 300 is curved, the discharge port 102 may be formed to have a slight side inclination, but the discharge port 102 connected to the discharge flow path 104 is formed to face downward.

A vane module 200(vane module) is provided in the present invention, and the vane module 200 is used to control the direction of the air discharged through the discharge port 102.

< construction of front Panel >

The front panel 300 includes: a front body 310 coupled to the casing housing 110 and having the suction port 101 and the discharge port 102 formed therein; a suction grill 320 formed with a plurality of grill holes 321 for covering the suction port 101; a pre-filter 330 detachably assembled to the suction grill 320; a vane module 200 disposed at the front body 310 for controlling the air flow direction of the discharge port 102.

The suction grill 320 is detachably provided at the front body 310. The suction grill 320 may be lifted up and down from the front body 310. The suction grill 320 covers the entire suction port 101.

In the present embodiment, the suction grill 320 is formed with a plurality of grill holes 321 in a lattice shape. The grill holes 321 communicate with the suction port 101.

A pre-filter 330 is disposed at an upper side of the suction grill 320. The pre-filter 330 filters air sucked into the interior of the housing 100. The pre-filter 330 is positioned at an upper side of the grill holes 321, and filters air passing through the suction grill 320.

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

In this embodiment, the blade module 200 may be separated toward the lower side of the front body 310. That is, the blade module 200 is configured independently of the coupling structure of the front body 310 and can be independently separated from the front body 310. The structure relating to this will be described in more detail later.

< construction of front body >

The front body 310 is coupled to a lower side of the case housing 110 and is disposed to face an indoor direction. The front body 310 is disposed at a ceiling of a room and is exposed to the room.

The front body 310 is coupled to the case housing 110, and the case housing 110 supports a load of the front body 310. The front body 310 supports the load of the suction grill 320 and the pre-filter 330.

The front body 310 is formed in a quadrangular shape in a plan view. The shape of the front body 310 may be formed in various ways.

The upper side of the front body 310 is formed in a horizontal manner so as to be closely attached to the ceiling, and the edge of the lower side of the front body 310 may be formed in a slightly curved surface.

A suction port 101 is disposed at the center of the front body 310, and a plurality of discharge ports 102 are disposed outside the edge of the suction port 101.

The suction port 101 may be formed in a square shape and the discharge port 102 may be formed in a quadrangular shape in a plan view. The discharge port 102 may be formed in a slit shape having a longer length than a width.

The front body 310 includes a front frame 312, side covers 314, and corner covers 316.

The front frame 312 provides load and rigidity to the front panel 300 and is fastened to the housing case 110. The suction port 101 and four discharge ports 102 are formed in the front frame 312.

In the present embodiment, the front frame 312 includes a side frame 311 and a corner frame 313.

The corner frame 313 is disposed at each corner of the front panel 300. The side frame 311 is combined with two corner frames 313. The side frame 311 includes an inner side frame 311a and an outer side frame 311 b.

The inner frame 311a is disposed between the suction port 101 and the discharge port 102, and is used to couple the two corner frames 313. The outer frame 311b is disposed outside the discharge port 102.

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

The suction port 101 is located inside the four inner side frames 311 a. The discharge port 102 is formed by being surrounded by two corner frames 313, an inner frame 311a, and an outer frame 311 b.

In addition, the side cover 314 and the corner cover 316 are coupled to the bottom surface of the front frame 312. The side covers 314 and corner covers 316 are exposed to the user and the front frame 312 is not visible to the user.

The side covers 314 are disposed at edges of the front frame 312, and the corner covers 316 are disposed at corners of the front frame 312.

The side cover 314 is formed of a synthetic resin material and is fastened and fixed to the front frame 312. Specifically, the side cover 314 is coupled to the side frame 311, and the corner cover 316 is coupled to the corner frame 313.

In the present embodiment, four side covers 314 and four corner covers 316 are respectively provided. The side covers 314 and corner covers 316 are coupled to the front frame 312 and connected as a combination. In the front panel 300, four side covers 314 and four corner covers 316 form one edge.

The side cover 314 is disposed under the side frame 311, and the corner cover 316 is disposed under the corner frame 313.

Four side covers 314 and four corner covers 316 are assembled to form a quadrangular frame. The four side covers 314 and the four corner covers 316 connected are defined as front decos 350.

The front trim piece 350 forms a trim piece outer boundary 351(outer border) and a trim piece inner boundary 352(inner border).

The garnish outer boundary 351 is formed in a quadrilateral shape in a plan view or a bottom view, and the garnish inner boundary 352 is also formed in a quadrilateral shape as a whole. Instead, the corners of the interior boundaries of the trim piece form a defined curvature.

The suction grill 320 and the four blade modules 200 are arranged inside the trim inner boundary 352. Further, the suction grill 320 and the four blade modules 200 are arranged in contact with each other at the garnish inner boundary 352.

In the present embodiment, four side covers 314 are arranged, and each side cover 314 is coupled to the front frame 312. The outer edge of the side cover 314 forms part of the trim outer boundary 351 and the inner edge forms part of the trim inner boundary 352.

In particular, the inside edge of the side cap 314 forms the outside boundary of the discharge orifice 102. The inside edge of the side cover 314 is defined as a side trim inner boundary 315.

In this embodiment, the corner cover 316 is configured with four, and each corner cover 316 is coupled to the front frame 312. The outside edge of the corner cover 316 forms part of the trim outer boundary 351 and the inside edge forms part of the trim inner boundary 352.

The inside edge of the corner cover 316 is defined as a corner trim inside boundary 317.

The corner garnish inner boundary 317 may be disposed in contact with the suction grill 320. In this embodiment, the inner edges of the corner covers 316 are disposed to face the suction grill 320, and are spaced apart from each other at predetermined intervals to form gaps 317 a.

The side garnish inner boundary 315 is similarly disposed to face the outer edge of the blade module 200 with a gap 315a formed at a predetermined interval from the blade module 200.

Thus, the garnish inner boundary 352 forms a continuous gap with a predetermined interval from the outer edges of the four blade modules 200 and the suction grill 320.

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

The front garnish gap 350a is formed at an inner edge of the front garnish 350. Specifically, the front garnish gap 350a is formed by separating the outer edges of the blade module 200 and the suction grill 320 from the inner edge of the front garnish 350.

When the vane module 200 is not in operation (when the indoor unit is stopped), the front garnish gap 350a allows the suction grill 320 and the vane module 200 to be viewed as a single structure.

< construction of suction grill >

The suction grill 320 is positioned at the lower side of the front body 310. The suction grill 320 may be lifted downward in a state of being closely attached to the bottom surface of the front body 310.

The suction grill 320 includes a grill main body 322 and a plurality of grill holes 321 penetrating the grill main body 322 in an up-down direction.

The suction grill 320 includes: a grill main body 322 disposed below the suction port 101, communicating with the suction port 101 through a plurality of grill holes 321, and formed in a quadrangular shape; and a grill corner portion 327 formed to extend in a diagonal direction from a corner of the grill main body 322.

The bottom surface of the grill body 322 and the bottom surface of the first blade 210 may form a continuous surface. Also, the bottom surface of the grill main body 322 and the bottom surface of the corner cover 316 may form a continuous surface.

A plurality of grids 323 are arranged in a grid pattern inside the grid body 322. The lattice 323 in the lattice form forms a lattice hole 321 in a quadrangular form. The portion where the grill 323 and the grill holes 321 are formed is defined as a suction portion.

The grill main body 322 includes: a suction part for dredging air; a grill main body 324 disposed so as to surround the suction portion. The suction portion has a quadrangular overall shape when viewed from above or from below.

The corners of the suction part are disposed toward the corners of the front panel 300, and more particularly, toward the corner cover 316.

The grill main body 322 is formed in a quadrangular shape when viewed from below.

The outer edge of the grill main body 324 is disposed so as to face the discharge opening 102 or the front garnish 350.

The outer side edge of the grill main portion 324 includes: a grill corner border 326 disposed in a manner to face the corner cover 316; a grill side edge 325 that forms the discharge port 102 and is disposed so as to face the side cover 314.

The grill corner boundaries 326 may be formed with a curvature centering on the inner side of the suction grill 320, and the grill side boundaries 325 may be formed with a curvature centering on the outer side of the suction grill 320.

The grill body 324 also includes a grill corner 327 surrounded by the grill corner border 326 and two grill side borders 325. The grill corner portion 327 is formed to protrude from the grill main body portion 324 toward the corner cover 316.

The grill corner portions 327 are disposed at respective corners of the grill main body 322. The grill corner portion 327 extends toward each corner of the front panel 300.

In the present embodiment, four grid edge portions 327 are provided. For convenience of description, the four grill corner portions 327 are defined as a first grill corner portion 327-1, a second grill corner portion 327-2, a third grill corner portion 327-3, and a fourth grill corner portion 327-4.

The grill side boundary 325 is formed in a shape recessed from the outside to the inside.

The discharge opening 102 is formed between the side cover 314 and the suction grill 320. More specifically, a discharge opening 102 is formed between the side garnish inner boundary 315 of the side cover 314 and the grill side boundary 325 of the grill body 322. The discharge ports 102 are formed between the side garnish inner boundaries 315 and the grill side boundaries 325 disposed in the four directions of the suction grill 320.

In the present embodiment, the length of the grill corner border 326 and the length of the corner trim inner border 317 are formed identically. That is, the width of the corner cover 316 and the width of the grill corner portion 327 are formed identically.

Further, the inner width of the side cover 314 and the width of the grill side boundary 325 are formed identically.

The grid side boundaries 325 are distinguished in more detail as follows.

The grill side boundary 325 forms an inside boundary of the discharge opening 102. The side trim interior boundaries 315 and corner trim interior boundaries 317 form the outer boundaries of the spout 102.

The grid side boundary 325 includes: a long linear segment 325a extending long in the longitudinal direction of the discharge port 102 and formed in a straight line; a first curved section 325b connected to one side of the long straight section 325a and having a center of curvature formed at an outer side of the suction grill 320; a second curved section 325c connected to the other side of the long straight section 325a and having a center of curvature formed at the outside of the suction grill 320; a first short straight line segment 325d connected to the first curved line segment 325 b; and a second short straight line segment 325e connected to the second curved line segment 325 c.

< construction of blade Module >

The vane module 200 is provided in the discharge passage 104 and controls the flow direction of the air discharged through the discharge port 102.

The vane module 200 includes a module body 400, a first vane 210, a second vane 220, a vane motor 230, a drive link 240, a first vane link 250, and a second vane link 260.

The first blade 210, the second blade 220, the blade motor 230, the drive link 240, the first blade link 250, and the second blade link 260 are disposed at the module body 400. The module body 400 is integrally provided to the front panel 300. That is, the entire components of the blade module 200 are modularized and are disposed on the front panel 300 at one time.

Since the blade module 200 is modularized, the assembly time can be shortened, and it is easy to replace the blade module when a failure occurs.

In the present embodiment, the blade motor 230 uses a stepping motor.

< construction of Module Main body >

The module body 400 may be formed of one body. In the present embodiment, in order to minimize the installation space and minimize the manufacturing cost, the two components are separated and manufactured.

In the present embodiment, the module body 400 is composed of a first module body 410 and a second module body 420.

The first and

second module bodies

410 and 420 are formed in a left-right symmetrical manner. In the present embodiment, the common structure will be described by taking the first module body 410 as an example.

The first and

second module bodies

410 and 420 are fastened to the front body 310, respectively. Specifically, the first and second module

main bodies

410 and 420 are disposed at the respective corner frames 313.

In the horizontal direction, the first module body 410 is provided to the corner frame 313 disposed at one side of the discharge opening 102, and the second module body 420 is provided to the corner frame 313 disposed at the other side of the discharge opening 102.

The first and second module

main bodies

410 and 420 are closely attached to the bottom surfaces of the corner frames 313 in the vertical direction and fastened by the fastening members 401.

Thus, the first and

second module bodies

410 and 420 are disposed under the front body 310. When viewed in a state in which the indoor unit is installed, the fastening direction of the first module body 410 and the corner frame 313 is arranged to be directed from the lower side to the upper side, and the fastening direction of the second module body 420 and the corner frame 313 is also arranged to be directed from the lower side to the upper side.

With the above-described structure, the blade module 200 can be easily separated from the front body 310 as a whole during maintenance.

The blade module 200 includes: a first block body 410 which is disposed on one side of the discharge port 102, is positioned below the front body 310, and is detachably attached to the front body 310 in a downward direction; a second module body 420 which is disposed on the other side of the discharge port 102, is positioned below the front body 310, and is detachably attached to the front body 310 to the lower side; one or more blades 210 and 220 coupled to the first and second module bodies 410 and 420 at one side and the other side thereof, respectively, and relatively rotating with respect to the first and second module bodies 410 and 420; a blade motor 230 provided at least one of the first and second module bodies 410 and 420 to provide a driving force to the blade; a first fastening hole 403-1 disposed in the first module body 410, facing downward, and formed to penetrate the first module body 410; a first fastening member 401-1 fastened to the front body 310 through the first fastening hole 403-1; a second fastening hole 403-2 disposed in the second module body 420 to face downward and formed to penetrate the second module body 420; and a second fastening member 401-2 fastened to the front body through the second fastening hole 403-2.

In particular, since the first and

second module bodies

410 and 420 are positioned below the front body 310, only the blade module 200 can be separated from the front body 310 in a state where the front body 310 is disposed in the housing case 110. This applies collectively to the blade module 200 totality in four positions.

When the module main body 400 is separated from the front main body 310, the entire blade module 200 is separated downward from the front main body 310.

The first module body 410 includes: a module body 402 coupled to the front body 310; and a coupling mounting portion 404 projecting upward from the module body portion 402.

The module main body 402 is fastened to the front body 310 by a fastening member 401 (not shown). Unlike the present embodiment, the module main body 402 may be combined with the front main body 310 by a snap-fit or an interference fit.

In the present embodiment, in order to minimize vibration or noise caused by the first blade 210, the second blade 220, the blade motor 230, the drive link 240, the first blade link 250, the second blade link 260, and the like, the module main body portion 402 is fixedly secured to the front body 310.

The fastening member 401 for fixing the module main body portion 402 is in a state of being fastened from the lower side to the upper side direction, and can be separated from the upper side to the lower side.

The module body 402 has a fastening hole 403 through which the fastening member 401 is inserted.

For convenience of description, when it is necessary to distinguish the fastening hole formed in the first module body 410 from the fastening hole formed in the second module body 420, the fastening hole disposed in the first module body 410 is referred to as a first fastening hole 403-1, and the fastening hole disposed in the second module body 420 is referred to as a second fastening hole 403-1.

Further, when the fastening members 401 need to be distinguished, the fastening member 401 disposed in the first fastening hole 403-1 is defined as a first fastening member 401-1, and the fastening member 401 disposed in the second fastening hole 403-1 is defined as a second fastening member 401-2.

The first fastening member 401-1 penetrates the first fastening hole and is fastened to the front body 310. The second fastening member 401-2 penetrates the second fastening hole and is fastened to the front body 310.

Before the module main body 400 is fastened and fixed, a module hook 405 for temporarily fixing the position of the module main body 400 is disposed.

The module catch 405 is coupled to the front panel 300 (specifically, the front body 310). Specifically, the module hook 405 and the front main body 310 are locked to each other.

A plurality of module hooks 405 can be arranged on one module body. In the present embodiment, the module hooks are respectively disposed on the outer edge and the front edge of the module main body 402. That is, the module hooks 405 are respectively disposed on the outer sides of the first module main body 410 and the second module main body 420, and the module hooks 405 are symmetrical in the left-right direction.

The blade module 200 can be temporarily fixed to the frame main body 310 by the module hooks 405 of the first module main body 410 and the module hooks 405 of the second module main body 420.

Slight loosening intervals will likely result based on the attachment of the module catch 405 to the attachment structure. The fastening member 401 firmly fixes the module main body 400 temporarily fixed to the front main body 310.

Fastening holes 403 for arranging the fastening members 401 may be located between the module hooks 405. The fastening holes 403 of the first module main body 410 and the fastening holes 403 of the second module main body 420 are arranged between the module hooks 405 on the one side and the other side.

In the present embodiment, the module hooks 405 and the fastening holes 403 are arranged in a row.

Even if the fastening member 401 is released, the blade module 200 can be kept coupled to the frame main body 310 by the module hooks 405.

In the case where the blade module 200 needs to be separated due to repair or malfunction, the blade module 200 can maintain a state of being coupled to the front panel 300 even if the fastening member 401 is separated. Thus, the operator does not need to additionally support the blade module 200 when releasing the fastening member 401.

Since the blade module 200 realizes primary fixing by the module hook 405 and secondary fixing by the fastening member 401, the ease of operation can be greatly improved during maintenance.

The module main body 402 is disposed in a horizontal manner, and the coupling mounting portions 404 are disposed in a vertical manner. In particular, the coupling mounting portion 404 protrudes upward from the module main body portion 402 as viewed from the mounted state.

The coupling mounting portions 404 of the first module body 410 and the coupling mounting portions 404 of the second module body 420 are disposed to face each other. The first vane 210, the second vane 220, the drive link 240, the first vane link 250, and the second vane link 260 are disposed between the link mounting portion 404 of the first module body 410 and the link mounting portion 404 of the second module body 420. The blade motor 230 is disposed outside the coupling mounting portion 404 of the first module body 410 or outside the coupling mounting portion 404 of the second module body 420.

The blade motor 230 may be provided in only one of the first module body 410 or the second module body 420. In this embodiment, they are respectively disposed on the first module body 410 or the second module body 420.

The first blade 210, the second blade 220, the drive link 240, the first blade link 250, and the second blade link 260 are coupled between the first module body 410 and the second module body 420, thereby integrating the blade module 200.

In order to attach the vane motor 230, a vane motor attachment portion 406 is provided to protrude outward of the coupling attachment portion 404. The blade motor 230 is fastened and fixed to the blade motor mounting portion 406. The vane motor mounting portion 406 is formed in a convex column shape, and the vane motor 230 is fixed to the vane motor mounting portion 406. The coupling mounting portion 404 and the vane motor 230 are spaced apart from each other by a predetermined distance by the vane motor mounting portion 406.

A drive link joint 407, a first blade link joint 408, and a second blade joint 409 are arranged at the link mounting portion 404, the drive link 240 is assembled at the drive link joint 407, and the drive link joint 407 provides a rotation center to the drive link 240, the first blade link 250 is assembled at the first blade link joint 408, and the first blade link joint 408 provides a rotation center to the first blade link 250, the second blade joint 409 is combined with the second blade 220, and the second blade joint 409 provides a rotation center to the second blade 220.

In the present embodiment, the drive link coupling portion 407, the first blade link coupling portion 408, and the second blade coupling portion 409 are formed in a hole form. Unlike the present embodiment, the present invention may be formed in a convex column shape, and may be implemented in various shapes in which a rotation shaft is provided.

In addition, a stopper 270 for limiting the rotation angle of the drive coupling 240 is disposed at the coupling mounting portion 404. The stopper 270 is formed to protrude toward the coupling mounting portion 404 on the opposite side.

In the present embodiment, the stopper 270 interferes at a specific position upon rotation of the drive coupling 240, and restricts rotation of the drive coupling 240. The stop 270 is located within the radius of rotation of the drive coupling 240.

In the present embodiment, the stopper 270 is integrally formed with the coupling mounting portion 404. In the present embodiment, the stopper 270 provides a mounting position of the drive coupling 240, maintains a state of contact therewith upon rotation of the drive coupling 240, and suppresses vibration or loosening interval of the drive coupling 240.

In the present embodiment, the stopper 270 is formed in an arc shape.

< construction of drive coupling >

The drive coupling 240 is directly connected to the vane motor 230. A motor shaft (not shown) of the vane motor 230 is directly coupled to the driving link 240, and a rotation amount of the driving link 240 is determined according to a rotation angle of a rotation shaft of the vane motor 230.

The drive link 240 penetrates the link mounting portion 404 and is assembled to the vane motor 230. In this embodiment, the drive link 240 extends through the drive link interface 407.

The drive coupling 240 comprises: the drive coupling body 245; a first drive coupling shaft 241 disposed on the drive coupling body 245 to be rotatably coupled to the first blade 210; a core coupling shaft 243 disposed on the driving coupling main body 245 and rotatably coupled to the coupling mounting portion 404 (specifically, the driving coupling portion 407); a second drive link shaft 242 disposed in the drive link body 245 and rotatably coupled to the second blade link 260.

The drive coupler body 245 includes a first drive coupler body 246, a second drive coupler body 247, and a core body 248.

The mandrel coupling shaft 243 is disposed on the mandrel body 248, the first drive coupling shaft 241 is disposed on the first drive coupling body 246, and the mandrel coupling shaft 243 is disposed on the second drive coupling body 247.

The core body 248 connects the first drive coupler body 246 and the second drive coupler body 247. The first and second

drive coupling bodies

246, 247 are not particularly limited in their shape. In this embodiment, however, the first 246 and second 247 drive coupler bodies are formed in a substantially linear fashion.

The first drive coupler body 246 is formed longer than the second drive coupler body 247.

The core coupling shaft 243 is rotatably assembled with the coupling mounting portion 404. The core coupling shaft 243 is assembled to a driving coupling engaging portion 407 formed on the coupling mounting portion 404. The core coupling shaft 243 can be relatively rotated in a state of being coupled to the driving coupling portion 407.

The first drive link shaft 241 is rotatably assembled with the first blade 210. The second drive link shaft 242 is rotatably assembled with the second blade link 260.

The first drive coupling shaft 241 and the second drive coupling shaft 242 project in the same direction. The core coupling shaft 243 protrudes in a direction opposite to the first and second

drive coupling shafts

241 and 242.

The first 246 and second 247 drive coupler bodies form a prescribed included angle. A virtual straight line connecting the first drive coupling shaft 241 and the core coupling shaft 243 and a virtual straight line connecting the core coupling shaft 243 and the second drive coupling shaft 242 form a predetermined angle E. The angle E is formed to be 0 degrees or more and 180 degrees or less.

The first drive coupler shaft 241 provides a structure that enables relative rotation of the drive coupler body 245 and the first blade 210. In this embodiment, the first drive coupler shaft 241 is integrally formed with the drive coupler body 245. Unlike the present embodiment, the first drive coupler shaft 241 may be fabricated in one piece with the first blade 210 or engagement rib 214.

The core coupling shaft 243 is configured to allow the driving coupling body 245 and the module body (specifically, the coupling mounting portion 404) to rotate relative to each other. In the present embodiment, the core coupling shaft 243 is formed integrally with the drive coupling body 245.

The second drive link shaft 242 provides a structure that enables relative rotation of the second blade link 260 and drive link 240. In this embodiment, the second drive coupler shaft 242 is formed integrally with the drive coupler body 245. Unlike the present embodiment, the second drive link shaft 242 may be fabricated in one piece with the second blade link 260.

In this embodiment, the second drive coupler shaft 242 is disposed in the second drive coupler body 247. The second drive coupling shaft 242 is disposed on the opposite side of the first drive coupling shaft 241 with respect to the core coupling shaft 243.

A virtual straight line connecting the first drive coupling shaft 241 and the core coupling shaft 243 and a virtual straight line connecting the core coupling shaft 243 and the second drive coupling shaft 242 form a predetermined angle E. The angle E is formed to be 0 degrees or more and 180 degrees or less.

< construction of first blade coupling >

In the present embodiment, the first blade coupling 250 is formed of a strong material and is formed in a straight line shape. Unlike the present embodiment, the first blade coupling 250 may be formed in a curved line.

The first blade coupling 250 comprises: a first blade coupler body 255; a 1 st-1 st blade coupling shaft 251 disposed in the first blade coupling body 255, assembled with the first blade 210, and rotated relative to the first blade 210; the 1 st to 2 nd blade coupling shafts 252 are disposed on the first blade coupling main body 255, assembled with the module main body 400 (specifically, the coupling mounting portion 404), and rotate relative to the module main body 400.

The 1 st-1 st blade link shaft 251 protrudes toward the first blade 210 side. The 1 st-1 st blade link shaft 251 is assembled with the first blade 210 and is rotatable relative to the first blade 210.

The 1 st-2 nd blade link shaft 252 is assembled to the link mounting portion 404 of the module body 400. Specifically, the 1 st-2 nd blade coupling shaft 252 is assembled to the first blade coupling engaging portion 408 and is rotatable relative to the first blade coupling engaging portion 408.

< construction of second blade coupling >

In this embodiment, the second blade coupling 260 is formed of a strong material and extends in a linear form. Unlike the present embodiment, the first blade coupling 250 may be formed in a curved line.

The second blade link 260 comprises: a second blade coupling body 265; a 2-1 blade link shaft 261 disposed in the second blade link body 265, assembled with the second blade 220, and relatively rotated with the second blade 220; the 2 nd to 2 nd blade link shaft portions 262 are disposed in the second blade link main body 265, assembled with the drive link 240 (specifically, the second drive link shaft 242), and rotated relative to the drive link 240.

In the present embodiment, the 2 nd-2 nd blade link shaft portion 262 is formed in the form of a hole penetrating the second blade link body 265. Since the 2 nd-2 nd vane link shaft portion 262 and the second drive link shaft 242 are of opposing construction, when one is formed in the form of a shaft, the remaining one is formed in the form of a bore providing a center of rotation. Thus, unlike the present embodiment, the 2 nd to 2 nd blade coupling shaft portion may be formed in the form of a shaft, and the second drive coupling shaft may be formed in the form of a hole.

The structural replacement described above can be applied to all the structures that can be relatively rotated in conjunction with the drive coupling, the first blade coupling, and the second blade coupling, and the corresponding deformable example will not be described in detail.

< construction of blade >

For the sake of explanation, the direction in which the air is discharged is defined as the front, and the opposite direction is defined as the rear. The ceiling side is defined as the upper side, and the floor is defined as the lower side.

In the present embodiment, the first blade 210 and the second blade 220 are arranged to control the flow direction of the air discharged from the discharge port 102. The relative arrangement and relative angle of the first blade 210 and the second blade 220 will change according to the steps of the blade motor 230. In the present embodiment, the first blade 210 and the second blade 220 form a pair and provide six spitting steps P1, P2, P3, P4, P5, P6 according to the steps of the blade motor 230.

The discharge steps P1, P2, P3, P4, P5, and P6 are defined as a state in which the first blade 210 and the second blade 220 are not moved and fixed. As a concept opposite thereto, the present embodiment may provide a moving step. The moving step is defined as an air flow that combines six spitting steps P1, P2, P3, P4, P5, P6 and operates and provides the first blade 210 and the second blade 220.

< construction of first blade >

The first vane 210 is disposed between the coupling mounting portion 404 of the first module body 410 and the coupling mounting portion 404 of the second module body 420.

The first vane 210 covers most of the discharge opening 210 when the indoor unit is not operating. Unlike the present embodiment, the first blade 210 may be made to cover the entire discharge port 210.

The first vane 210 is coupled to a drive coupler 240 and a first vane coupler 250.

The drive coupler 240 and the first blade coupler 250 are disposed on one side and the other side of the first blade 210, respectively.

The first vane 210 rotates relative to the drive link 240 and the first vane link 250, respectively.

When it is necessary to distinguish the positions of the drive coupler 240 and the first blade coupler 250, the drive coupler 240 coupled to the first module body 410 is defined as a first drive coupler, and the first blade coupler 250 coupled to the first module body 410 is defined as a 1 st-1 st blade coupler. The drive coupler 240 coupled to the second module body 420 is defined as a second drive coupler and the first blade coupler 250 coupled to the second module body 420 is defined as a 1 st-2 nd blade coupler.

The first blade 210 includes: a first blade body 212 formed to extend long along the longitudinal direction of the discharge port 102; an engaging rib 214 protruding upward from the first blade body 212, wherein the driving coupling 240 and the first blade coupling 250 are coupled to the engaging rib 214.

The first blade body 212 may be formed as a slow curved surface.

The first vane main body 212 controls the direction of the air discharged along the discharge flow path 104. The discharged air may collide with the upper or lower side of the first blade body 212, thereby guiding the flow direction of the air.

The flow direction of the discharged air is orthogonal or intersects with the longitudinal direction of the first blade body 212.

The engagement rib 214 is a mounting structure for coupling the drive coupler 240 and the first blade coupler 250. The engagement ribs 214 are respectively disposed on one side and the other side of the first blade 210.

The engagement rib 214 is formed to protrude from the upper side of the first blade body 212 toward the upper side. The engagement rib 214 is formed along the flow direction of the discharged air and minimizes its resistance to the discharged air. Thus, the engagement ribs 214 are orthogonal or intersect with respect to the longitudinal direction of the first blade body 212.

The engaging rib 214 is formed such that the height of the air discharge direction side (front) is low and the height of the air intake direction side (rear) is high. In the present embodiment, the engagement rib 214 is formed such that the height of the side to which the drive coupling 240 is coupled is high, and the height of the side to which the first blade coupling 250 is coupled is low.

The engagement rib 214 includes: a second engagement portion 217 rotatably combined with the drive coupling 240; a first engaging portion 216 rotatably coupled to the first blade coupler 250.

The engagement rib 214 may be integrally formed with the first blade body 212.

In this embodiment, the first and second engaging portions 216 and 217 are formed in the form of holes and penetrate the engaging ribs 214.

The first joint portion 216 and the second joint portion 217 are configured to be coupled to each other by a shaft or a hinge, and are deformable to various forms.

The second joint portion 217 is located at a higher position than the first joint portion 216 when viewed from the front.

The second joint portion 217 is located at a position more rearward than the first joint portion 216. A first drive coupling shaft 241 is assembled at the second engagement portion 217. The second engagement portion 217 and the first drive coupling shaft 241 are assembled to be relatively rotatable. In the present embodiment, the first drive coupling shaft 241 is assembled to penetrate the second engagement portion 217.

The 1 st-1 st blade link shaft 251 is assembled at the first joint 216.

The first engaging portion 216 and the 1 st to 1 st blade coupling shaft 251 are assembled in a relatively rotatable manner. In the present embodiment, the 1 st-1 st blade coupling shafts 251 are assembled with each other so as to penetrate the first engaging portions 216.

The drive coupler 250 and the first blade coupler 250 are disposed between the engagement rib 214 and the coupler mounting portion 404 in a plan view.

In the present embodiment, the interval of the first engaging portion 216 and the second engaging portion 217 is formed narrower than the interval of the core coupling shaft 243 and the 1 st to 2 nd vane coupling shaft 252.

< construction of second blade >

The second blade 220 includes: a second blade body 222 formed to extend long along the longitudinal direction of the discharge port 102; an engaging rib 224 protruding upward from the second blade body 222 to be relatively rotatably combined with the second blade coupling 260; and a second blade shaft 221 formed at the second blade body 222 and rotatably coupled to the coupling mounting portion 404.

The engagement rib 224 is configured to be coupled to a shaft or a hinge, and can be deformed into various forms. A hole formed at the second engagement rib 224 and relatively rotatably combined with the second blade coupling 220 is defined as a third engagement portion 226.

In this embodiment, the third engaging portion 226 is formed in a hole shape and penetrates the engaging rib 224. The third joint 226 is configured to be coupled to a shaft or a hinge, and may be deformed into various forms.

When it is necessary to distinguish the engaging rib 214 of the first blade from the engaging rib 224 of the second blade, the engaging portion of the first blade is defined as the first engaging rib 214, and the engaging portion of the second blade is defined as the second engaging rib 224.

The second blade 220 may be relatively rotated about the second engagement rib 224, or may be relatively rotated about the second blade axis 221. That is, the second blade 220 can be relatively rotated with respect to the second engagement rib 224 and the second blade shaft 221.

The second engagement rib 224 is located more forward than the second blade axis 221 in a plan view. The second engagement rib 224 moves along a predetermined trajectory around the second blade axis 221.

The second blade body 222 may be formed as a slowly curved surface.

The second vane main body 222 controls the direction of the air discharged along the discharge flow path 104. The discharged air collides with the upper or lower side of the second blade body 222, thereby guiding the flow direction of the air.

The flow direction of the discharged air is orthogonal or intersects with the longitudinal direction of the second blade body 222.

At least a portion of the second blade body 222 may be located between the first joints 212 of the first blades 210 when viewed from above.

This is a structure for preventing interference when the second blade 220 is positioned at the upper side of the first blade 210. The end of the second blade body 222 on the front side is located between the first joint portions 214. That is, the length of the front side of the second blade body 222 is smaller than the length between the first joint portions 214.

The second engagement rib 224 is a mounting structure for assembly with the second blade link 260. The second engagement ribs 224 are disposed on one side and the other side of the second blade body 222, respectively.

The second engagement rib 224 is coupled to the second blade link 260 so as to be rotatable relative thereto, and in the present embodiment, the third engagement portion 226 is coupled to the second blade link 260 so as to be rotatable relative thereto.

The second engagement rib 224 is formed to protrude from the upper side of the second blade body 222 toward the upper side. The second engagement rib 224 is preferably formed along the flow direction of the discharged air. Thus, the second joining rib 224 is disposed so as to be orthogonal or intersect with the longitudinal direction of the second blade body 222.

The second blade 220 rotates about the second blade axis 221. The second blade shaft 221 is formed on one side and the other side of the second blade body 222, respectively.

The second blade shaft 221 on the one side projects toward the link mounting portion 404 arranged on the one side, and the second blade shaft 221 on the other side projects toward the link mounting portion 404 arranged on the other side.

A second blade coupling portion 411 rotatably coupled to the second blade shaft 221 is disposed in the module body 400. In this embodiment, the second vane coupling portion 411 is formed in a hole shape penetrating the module body 400.

The second blade shaft 221 is located more rearward than the second engagement rib 224. In front of the second blade shaft 221, a second blade coupling 260, a drive coupling 240, and a first blade coupling 250 are arranged in this order.

Further, the drive coupling portion 407 and the first blade coupling portion 408 are arranged in this order in front of the second blade coupling portion 411.

< arrangement of vane module and suction grill >

The coupling structure and the separation structure of the blade module will be described in more detail with reference to fig. 1 to 4 and 15 to 17.

When the suction grill 320 is separated in the state of fig. 1, as shown in fig. 15, four blade modules 200 are exposed. The suction grill 320 is detachably assembled to the front body 310.

The suction grill 320 may be separated from the front body 310 using various methods.

The suction grill 320 may be separated by rotating the suction grill while separating the opposite side of the suction grill with respect to the one side edge. Alternatively, the suction grill 320 may be separated by releasing the locking state in a state where the suction grill is locked to the front body 310. Alternatively, the suction grill 200 may be maintained in a state of being coupled to the front body 310 using a magnetic force.

In this embodiment, the suction grill 320 may be moved in the up-and-down direction by the lifter 500 provided at the front body 310. The elevating member 500 may be connected to the suction grill 320 by a wire (not shown). By the operation of the elevating member 500, the wire can be unwound or wound, and the suction grill 320 is moved to the lower side or to the upper side by such an operation.

A plurality of the lifters 500 are arranged, and each of the lifters 500 simultaneously moves both sides of the suction grill 320.

When the suction grill 320 moves downward, the first and

second module bodies

410 and 420, which are originally shielded by the suction grill 320, are exposed.

In a state where the suction grill 320 is assembled to the front body 310, at least one of the first and

second blades

210 and 220 of the blade module 200 may be exposed.

When the indoor unit is not operated, only the first vane 210 is exposed to a user. The second vane 220 may be selectively exposed to a user when the discharged air is discharged by the operation of the indoor unit.

In a state where the suction grill 320 is assembled to the front body 310, the first and

second module bodies

410 and 420 of the vane module 200 are shielded by the suction grill 320.

Since the fastening holes 403 are respectively disposed in the first and second module

main bodies

410 and 420, the fastening holes 403 are hidden from the user by the suction grill 320.

In addition, since the first module body 410 and the second module body 420 are disposed above the grill edge portion 327 constituting the suction grill 320, the grill edge portion 327 cuts the first module body 410 and the second module body 420 to be exposed to the outside.

The grid edge portion 327 cuts off the fastening holes 403 formed in the first and

second module bodies

410 and 420 to be exposed. Since the grill corner portion 327 is located at a lower side of the fastening hole 403, the fastening hole 403 is hidden by the grill corner portion 327.

To explain it more specifically, the suction grill 320 includes: a grill main body 322 disposed below the suction port 101, communicating with the suction port 101 through a plurality of grill holes 321, and formed in a quadrangular shape; a first grill corner portion 327-1, a second grill corner portion 327-2, a third grill corner portion 327-3, and a fourth grill corner portion 327-4, which are formed to extend in a diagonal direction from each corner of the grill main body 322.

The blade module 200 includes: a first vane module 201 disposed outside each edge of the suction grill 320 and between the first grill corner portion 327-1 and the second grill corner portion 327-2; a second vane module 202 disposed outside each edge of the suction grill 320 and between the second grill corner portion 327-2 and the third grill corner portion 327-3; a third vane module 203 disposed outside each edge of the suction grill 320 and between the third grill corner portion 327-3 and the fourth grill corner portion 327-4; and a fourth vane module 204 disposed outside each edge of the suction grill 320 and between the fourth grill corner portion 327-4 and the first grill corner portion 327-1.

The first and

second module bodies

410 and 420 disposed between the first and second blade modules 201 and 202 are located above the first grill corner portion 327-1 and hidden by the first grill corner portion 327-1. Specifically, the second module body of the first blade module and the first module body of the second blade module are arranged above the first grid edge.

The first and second module bodies disposed between the second and third blade modules 202 and 203 are located above the second grid corner portion 327-2 and hidden by the second grid corner portion 327-2. Specifically, the second module body of the second blade module and the first module body of the third blade module are arranged above the second grid edge.

The first and second module bodies disposed between the third and fourth blade modules 203 and 204 are located above the third grill corner portion 327-3 and hidden by the third grill corner portion 327-3. Specifically, the second module body of the third blade module and the first module body of the fourth blade module are arranged above the third grid edge.

The first and second module bodies disposed between the fourth blade module 204 and the first blade module 201 are located above the fourth grid edge portion 327-4 and hidden by the fourth grid edge portion 327-1. Specifically, the second module body of the fourth blade module and the first module body of the first blade module are arranged above the fourth grid edge.

Referring to fig. 15, a blade module 200 disposed in a 12-point direction is defined as a first blade module 201, a blade module 200 disposed in a 3-point direction is defined as a second blade module 202, a blade module 200 disposed in a 6-point direction is defined as a third blade module 203, and a blade module 200 disposed in a 9-point direction is defined as a fourth blade module 204.

The first blade module 201, the second blade module 202, the third blade module 203, and the fourth blade module 204 are arranged at 90-degree intervals with reference to the center C of the front panel 300.

The first blade module 201 and the third blade module 203 are arranged in parallel, and the second blade module 202 and the fourth blade module 204 are arranged in parallel.

Four side covers 314 are disposed at the front body 310. For convenience of description, the side cover 314 disposed outside the first blade module 201 is defined as a first side cover 314-1, the side cover 314 disposed outside the second blade module 202 is defined as a second side cover 314-2, the side cover 314 disposed outside the third blade module 203 is defined as a third side cover 314-3, and the side cover 314 disposed outside the fourth blade module 204 is defined as a fourth side cover 314-4.

Each side cover 314 is assembled to an edge of the front frame 312, is positioned below the front frame 312, is exposed to the outside, and is disposed outside each blade module 202.

Further, a corner cover 316 disposed between the first blade module 201 and the second blade module 202 is defined as a first corner cover 316-1. A corner cover 316 disposed between the second blade module 202 and the third blade module 203 is defined as a second corner cover 316-2. A corner cover 316 disposed between the third blade module 203 and the fourth blade module 204 is defined as a third side corner cover 316-3. A corner cover 316 disposed between the fourth blade module 204 and the first blade module 201 is defined as a fourth corner cover 316-4.

The first side cover 316-1 is assembled to the corner of the front frame 312, is positioned at the lower side of the front frame 312, is positioned between the first and second side covers 314-1 and 314-2, and is exposed to the outside.

The second corner cover 316-2 is assembled to the corner of the front frame 312 at the lower side of the front frame 312 between the second and third side covers 314-2 and 314-3 and is exposed to the outside.

The third side corner cover 316-3 is assembled to the corner of the front frame 312, is positioned at the lower side of the front frame 312, is positioned between the third and fourth side covers 314-1 and 314-4, and is exposed to the outside.

The fourth corner cover 316-4 is assembled to the corner of the front frame 312, is positioned at the lower side of the front frame 312, is positioned between the fourth side cover 314-1 and the first side cover 314-1, and is exposed to the outside.

The first side flap 316-1 and the third side flap 316-3 are disposed along a diagonal direction with reference to the center C of the front panel 300, and are disposed to face each other. The second and fourth corner covers 316-2 and 316-4 are disposed in a diagonal direction with respect to the center C of the front panel 300 and face each other.

Virtual diagonal lines passing through the center of the front panel 300 are defined as P1 and P2. P1 is a virtual line connecting the first corner cover 316-1 and the third corner cover 316-3, and P2 is a virtual line connecting the second corner cover 316-2 and the fourth corner cover 316-4.

A first grill corner portion 327-1, a second grill corner portion 327-2, a third grill corner portion 327-3, and a fourth grill corner portion 327-4 extending to the corner sides are disposed at the suction panel 320.

The first vane module 201 is disposed outside each edge of the suction grill 320 with respect to the grill edge part, and is disposed between the first grill edge part 327-1 and the second grill edge part 327-2.

The second vane module 202 is disposed outside each edge of the suction grill and between the second grill corner portion 327-2 and the third grill corner portion 327-3.

The third vane module 203 is disposed outside each edge of the suction grill and between the third grill corner portion 327-3 and the fourth grill corner portion 327-4.

The fourth vane module 204 is disposed outside each edge of the suction grill and between the fourth grill corner portion 327-4 and the first grill corner portion 327-1.

The first grid corner portion 327-1 is formed to extend toward the first corner cover 316-1 and forms a continuous surface with the outer side surface of the first corner cover 316-1.

The grill corner border 326 of the first grill corner portion 327-1 faces the corner trim inner border 317 of the first corner cover 316-1 and forms a corner trim inner border gap 317 a.

The grid corner borders 326 of the remaining grid corner portions 327 and the corner trim inner borders 317 of the corner covers 316 also face each other, respectively, and form respective corner trim inner border gaps 317 a.

The first and

second module bodies

410 and 420 are located inside the corner cover 316 (specifically, the center C side of the front panel). In particular, the first and

second module bodies

410 and 420 are disposed to face each other with reference to the virtual diagonal lines P1 and P2.

Specifically, the first module body 410 of the first blade module 201 and the second module body 420 of the fourth blade module 204 are disposed so as to face each other with reference to a virtual diagonal line P2.

The first module body 410 of the second blade module 202 and the second module body 420 of the first blade module 201 are disposed so as to face each other with reference to a virtual diagonal line P1.

The first module body 410 of the third blade module 201 and the second module body 420 of the second blade module 202 are disposed so as to face each other with reference to a virtual diagonal line P2.

The first block body 410 of the fourth blade block 204 and the second block body 420 of the third blade block 203 are disposed so as to face each other with reference to a virtual diagonal line P1.

The suction grill 320 is positioned under the first and

second module bodies

410 and 420, and the first and

second module bodies

410 and 420 are hidden from view. That is, when the suction grill 320 is closely attached to the front body 310, the first and

second module bodies

410 and 420 are shielded from the user by the suction grill 320.

Since the first and second module

main bodies

410 and 420 are hidden, the first and second module

main bodies

410 and 420 have an advantage in that the fastening holes 403 formed in the suction grill 320 are also hidden from the user.

The suction grill 320 is formed with four grill corner portions 327 arranged to face the respective corner covers 316. Each of the grid corner portions 327 is disposed opposite each of the corner covers 316.

A grid corner portion 327 disposed to face the first corner cover 316-1 is defined as a first grid corner portion 327-1, a grid corner portion 327 disposed to face the second corner cover 316-2 is defined as a second grid corner portion 327-2, a grid corner portion 327 disposed to face the third corner cover 316-3 is defined as a third grid corner portion 327-3, and a grid corner portion 327 disposed to face the fourth corner cover 316-4 is defined as a fourth grid corner portion 327-4.

The plurality of module main bodies 400 are located on the upper side of the grid edge portion 327 when viewed from below, and are hidden by the grid edge portion 327.

In particular, the grill side boundaries 325 forming the edges of the grill corner portions 327 and the corner garnish inner boundaries 317 forming the inner side edges of the corner covers 316 are disposed so as to face each other, and the curved shapes also correspond to each other.

Similarly, the grid corner boundary 326 forming the edge of the grid corner portion 327 and the inner edge of the first blade 210 are arranged to face each other, and the curved shapes also correspond to each other.

In the present embodiment, a permanent magnet 318 and a magnetic fixing portion 328 are disposed to maintain the suction grill 320 in a state of being closely attached to the front body 310.

One of the permanent magnet 318 or the magnetic fixing portion 328 may be disposed on the front body 310, and the other of the magnetic fixing portion 328 or the permanent magnet 318 may be disposed on the upper side of each of the grill corner portions 327.

The permanent magnet 318 and the magnetic fixing portion 328 are located above the respective grid edge portions 327 and hidden by the respective grid edge portions 327. Since the permanent magnets 318 and the magnetic fixing portions 328 are located outside the respective corners of the suction grill 320, it is possible to minimize the suction grill 320 and the front main body 310 from being spaced apart.

If the suction grill 320 and the front body 310 are spaced apart from each other, a problem occurs in that the pressure inside the suction flow path 103 is reduced.

In the present embodiment, the permanent magnet 318 is disposed on the front body 310. Specifically, the permanent magnet is disposed in the corner frame 313.

The magnetic fixing portion 328 is formed of a metal material that interacts with the permanent magnet 318 to form an attractive force. The magnetic fixing portion 328 is disposed on an upper side surface of the suction grill 320. Specifically, the magnetic fixing portion 328 is disposed on the upper side surface of the grill corner portion 327.

In case that the suction grill 320 moves to the upper side and approaches the permanent magnet 318, the permanent magnet 318 pulls the magnetic fixing portion 328 to fix the suction grill 320. The magnetic force of the permanent magnet 318 is smaller than the self weight of the suction grill 320. Accordingly, when the suction grill 320 cannot be pulled by the lifter 500, the permanent magnet 318 and the magnetic fixing portion 328 are disengaged from each other.

The permanent magnets 318 are arranged on the virtual diagonal lines P1 and P2 when viewed from above or from below. The permanent magnet 318 is located inside the corner cover 316.

One of the four permanent magnets 318 is disposed between the first module body 410 of the first blade module 201 and the second module body 420 of the fourth blade module 204 when viewed from above or from below. The remaining three permanent magnets are also disposed between the first module body 410 and the second module body 420 of each blade module.

The permanent magnet 318 and the magnetic fixing portion 328 are located above the respective grid edge portions 327 and hidden by the respective grid edge portions 327.

< discharge step corresponding to operation of vane Motor >

In the present embodiment, when the indoor unit is not operated (when the indoor blower is not operated), in each blade module 200, as shown in the figure, the second blade 220 is located on the upper side of the first blade 210, and the first blade 210 covers the discharge opening 102. The lower side of the first vane 210 forms a continuous surface with the lower side of the suction grill 320 and the lower side of the side cover 314.

When the indoor unit is not operated, since the second vane 220 is positioned at an upper side of the first vane 210, it is in a state of being hidden when viewed from the outside. The second vane 220 is exposed to the user only when the indoor unit is operated. Thus, the second vane 220 is positioned on the discharge flow path 104 when the indoor unit is not operating, and the first vane 210 covers most of the discharge port 102.

In the present embodiment, the first blade 210 covers most of the discharge port 102, but may be formed so that the first blade 210 covers the entire discharge port 210 according to design.

When the indoor blower is operated in a state where the second blade 220 is accommodated, the blade motor 230 is operated, and the first blade 210 and the second blade 220 may be changed to one of six discharge steps P1, P2, P3, P4, P5, and P6.

The stop step P0 is defined when the indoor unit is stopped and the vane module 200 is not operating.

< stop step P0>

In the stop step P0 state, the blade module 200 is in an inoperative state. When the indoor unit is not operated, the vane module 200 maintains the stop step P0 state.

In the stopped step P0 state, in the blade module 200, the blade motor 230 will rotate the drive link 240 in the first direction (clockwise in the drawings of this embodiment) to the maximum extent.

At this time, the second drive coupling body 247 constituting the drive coupling 240 is supported at one side end 271 of the stopper 270, and further rotation thereof in the first direction is restricted.

In order to prevent over-rotation of the drive coupler 240, in the stop step P0, the second drive coupler body 247 and the other side end 270b of the stopper 270 interfere with each other. The second drive coupling body 247 is supported against the stop 270 and further rotation thereof will be limited.

The drive link 240 rotates in a first direction about the core link shaft 243, and the first vane link 250 rotates in a first direction about the 1 st to 2 nd vane link shaft 252.

The first vane 210 rotates in a state of being constrained by the drive coupling 240 and the first vane coupling 250, and is located in the discharge port 102. The lower surface of the first vane 210 forms a continuous surface with the suction panel 320 and the side cover 314.

In the stop step P0 state, the second blade 220 is positioned at the upper side of the first blade 210. The second blade 220 is located between the first engaging portions 214 and on the upper side of the first blade body 212 when viewed in plan.

Further, in the stop step P0 state, the drive link 240, the first blade link 250, and the second blade link 260 are arranged on the upper side of the first blade 210. The drive link 240, a blade link 250, and a second blade link 260 are shielded from the exterior by the first blade 210. That is, in the stop step P0 state, the first blade 210 covers the discharge port 102 and cuts off the components constituting the blade module 200 to expose them to the outside.

In the stop step P0 state, the drive link 240 is in a state of being rotated to the maximum in the clockwise direction, and the second blade link 260 is in a state of being lifted to the maximum.

When the indoor unit is not operated, since the second vane 220 is positioned at the upper side of the first vane 210, it is hidden when viewed from the outside. The second vane 220 is exposed to the user only when the indoor unit is operated.

In the stop step P0, the positional relationship of the shafts forming the rotational centers of the respective links is described as follows.

First, the first joint portion 216 and the second joint portion 217 of the first blade 210 are arranged substantially horizontally. The second engagement rib 224 of the second blade 220 is located on the upper side of the first engagement rib 214.

The second engagement rib 224 is located above the second engagement portion 217 and the first engagement portion 216, and between the first engagement portion 216 and the second engagement portion 217 as viewed from the side.

Further, since the 2 nd to 1 st blade link shaft 261 is coupled to the second engagement rib 224, the 2 nd to 1 st blade link shaft 261 is also positioned above the second engagement portion 217 and the first engagement portion 216.

The first joint portion 216 and the second joint portion 217 are located above the first blade body 212 and below the second blade body 222.

When the indoor unit is stopped, the second vane 220 is positioned at the upper side of the first vane 210, and the 2-1 vane link shaft 261 is disposed at the upper side of the first driving link shaft 241 and the 1-1 vane link shaft 251.

Further, the 2 nd-1 th blade link shaft 261 is located at a position on an upper side than the second blade shaft 221, and the 2 nd-2 nd blade link shaft portion 262 is located at a position higher than the 2 nd-1 th blade link shaft 261.

The 2 nd-2 nd vane coupler shaft portion 262 is located on the upper side of the 2 nd-1 st vane coupler shaft portion 261 and on the upper side of the core coupler shaft 243.

Next, the relative position and direction of each coupling in the stop step P0 are described as follows.

In addition, the first and

second blade links

250 and 260 are arranged in the same direction. The first and second vane links 250 and 260 have upper ends located on the front side in the air discharge direction and lower ends located on the rear side in the air discharge direction.

Specifically, the 1 st-2 nd blade link shaft 252 of the first blade link 250 is located on the front side, and the 1 st-1 st blade link shaft 251 of the first blade link 250 is located on the rear side. The 1 st-2 nd blade link shaft 252 of the first blade link 250 is located at a position on the upper side than the 1 st-1 st blade link shaft 251. The first blade coupling 250 is disposed to be inclined rearward and downward with respect to the 1 st to 2 nd blade coupling shaft 252.

Likewise, the 2 nd-2 nd blade link shaft portion 262 of the second blade link 260 is located on the forward side, and the 2 nd-1 st blade link shaft portion 261 of the second blade link 260 is located on the rearward side. The 2 nd-2 nd blade link shaft portion 262 of the second blade link 260 is located at a position on the upper side than the 2 nd-1 st blade link shaft 261. The second blade link 260 is disposed to be inclined rearward and downward with respect to the 2 nd to 2 nd blade link shaft portion 262.

The first drive coupler body 246 of the drive coupler 240 is configured in the same direction as the first and

second blade couplers

250, 260, and the second drive coupler body 247 intersects the direction of the arrangement of the first and

second blade couplers

250, 260.

< spitting step P1>

In the stop step P0 state, the drive link 240 is rotated in a second direction (counterclockwise in the drawing of the present embodiment) opposite to the first direction to provide the discharge step P1.

In the spit step P1 state, the blade module 200 may provide horizontal wind.

In the horizontal wind state, the air discharged from the discharge port 102 can flow in a direction horizontal to the ceiling or the floor surface by being guided by the first blade 210 and the second blade 220.

When the discharged air is caused to flow in a horizontal wind manner, the flow distance of the air can be maximized.

In the discharge step P1 state, the upper surfaces of the first blade 210 and the second blade 220 may form a continuous surface. In the discharge step P1, the first blade 210 and the second blade 220 are connected as a single blade and discharge air is guided.

When the blade module 200 provides the discharge step P1 as one of the plurality of discharge steps, the first blade 210 is positioned below the discharge port 102, and the end 222a of the second blade 220 on the front side is positioned above the end 212a of the first blade 210 on the rear side.

The upper side of the second blade 220 is located at a higher position than the upper side of the first blade 210.

In the present embodiment, the first vane 210 is disposed on the front side in the flow direction of the discharged air, and the second vane 220 is disposed on the rear side in the flow direction of the discharged air. The front end 222a of the second blade 220 may be close to or in contact with the rear end 212b of the first blade 210. In the discharge step P1, the distance S1 between the front end 222a of the second blade 220 and the rear end 212b of the first blade 210 can be minimized.

The rear end 222b of the second blade is located above the discharge opening 102, the front end 222a of the second blade is located below the discharge opening 102, and the rear end 212b of the first blade is located below the front end 222a of the second blade.

In the discharge step P1, the front end 222a of the second blade 220 is positioned above the rear end 212b of the first blade 210.

By bringing the front end 222a and the rear end 212b close to or into contact with each other, leakage of the discharged air between the first blade 210 and the second blade 220 can be minimized.

In the present embodiment, the front end 222a and the rear end 212b are brought close to each other without being in contact with each other.

Further, when the blade module 200 forms horizontal wind in the discharge step P1, the first blade 210 and the second blade 220 are connected and operate like one blade, and thus the airflow intensity of the horizontal wind can be increased. That is, the discharged air is guided in the horizontal direction along the top surface of the second blade 220 and the top surface of the first blade 210, and thus the directivity of the discharged air can be further enhanced as compared with the case where a horizontal wind is formed by one blade.

When the horizontal wind is generated, the second blade 220 is disposed to be slightly inclined in the vertical direction compared to the first blade 210.

In the case of the horizontal wind, the first blade 210 is preferably located below the discharge port 102 in a side view, and the second blade 220 is preferably disposed so as to overlap the discharge port 102.

In the discharge step P1 state, the second blade 220 rotates at the home position around the second blade shaft 221, and the first blade 210 is assembled with the drive coupling 240 and the first blade coupling 250 and rotates (swing) in the air discharge direction.

When proceeding from P0 to P1, the second blade 220 rotates about the second blade shaft 221, the first blade 210 moves forward in the air discharge direction and descends downward, and the front end 212a of the first blade rotates in the first direction (clockwise in the drawing).

By the rotation (rotation) of the drive coupling 240 and the first blade coupling 250, the first blade 210 can be moved to the lower side of the discharge port 102, and the first blade 210 can be arranged substantially horizontally. Since the vane of the indoor unit of the related art adopts a structure that is rotated in the home position, the arrangement of the first vane 210 as in the present embodiment cannot be achieved.

In the stop step P0, when the blade motor 230 rotates the drive link 240 in a second direction (counterclockwise), the second blade link 260 coupled to the drive link 240 will also rotate in correspondence with the drive link 240.

Specifically, when the stopping step P0 is changed to the discharge step P1, the drive link 240 rotates counterclockwise, the first blade link 210 rotates counterclockwise as the drive link 240 rotates, and the second blade link 220 relatively rotates and descends.

Since the second blade 220 is assembled to the second blade shaft 221 and the second blade link 260 to be rotatable relative to each other, the second blade 220 rotates clockwise about the second blade shaft 221 as the second blade link 220 descends.

When the stopping step P0 is changed to the discharging step P1 to generate the horizontal wind, the rotation directions of the first blade 210 and the second blade 220 are opposite to each other.

In the discharge step P1, the vane motor 230 rotates 73 degrees (P1 rotation angle), and the first vane 210 forms a substantially 13-degree pitch (first vane P1 pitch) and the second vane 220 forms a substantially 52-degree pitch (second vane P1 pitch) as the vane motor 230 rotates.

The positional relationship of the shafts forming the rotation centers of the respective links at the discharge step P1 will be described below.

First, unlike the P0, the second joint 217 and the first joint 216 of the first blade 210 are arranged to be inclined forward in the air discharge direction. The third joint portion 226 of the second blade 220 is disposed rearwardmost, the first joint portion 216 is disposed forwardmost, and the second joint portion 217 is disposed between the first joint portion 216 and the third joint portion 226, as viewed from the side.

The 2-1 blade link shaft 261 is located at a lower position than the second blade shaft 221, the first drive link shaft 241 is located at a lower position than the 2-1 blade link shaft 261, and the 1-1 blade link shaft 251 is located at a lower position than the first drive link shaft 241.

In the state of P1, the third joint portion 226, the second joint portion 217, and the first joint portion 216 are arranged in a row with the arrangement direction facing the front lower side in the air discharge direction. When the discharge step P1 is provided, the second blade shaft 221, the 2 nd to 1 st blade link shaft 261, the first drive link shaft 241, and the 1 st to 1 st blade link shaft 251 are arranged in a row.

According to an embodiment, the third joint portion 226, the second joint portion 217, and the first joint portion 216 may not be arranged in a row.

At the same time, the second blade shaft 221 may be disposed in a line with the third joint 226, the second joint 217, and the first joint 216. In this case, the second blade axis 221 is located on the rear side of the third joint portion 226.

In the P1 state, the first blade 210 and the second blade 220 will provide horizontal wind. The horizontal wind does not indicate that the discharge direction of the air is exactly horizontal. The horizontal wind indicates an angle at which the first blade 210 and the second blade 220 are connected to each other like a single blade and the discharged air can flow farthest in the horizontal direction by the connection of the first blade 210 and the second blade 220.

In the discharge step P1 state, the distance S1 between the front end 222a of the second blade 220 and the rear end 212b of the first blade 210 can be minimized.

In the case of the horizontal wind, the air guided by the second blade 220 is guided toward the first blade 210. When the discharged air is caused to flow as a horizontal wind by the P1 state, the flow distance of the air can be maximized.

Since the discharge flow path 104 is formed along the vertical direction, the inclination of the second vane 220 close to the suction port 101 is formed steeper than the inclination of the first vane 210.

Further, in the spit step P1 state, the 1 st to 1 st blade link shaft 251 of the first blade link 250 is located on the lower side of the 1 st to 2 nd blade link shaft 252.

In the spit step P1 state, the 2 nd-1 st blade link shaft 261 of the second blade link 260 is located on the lower side of the 2 nd-2 nd blade link shaft portion 262.

In the ejection step P1 state, the first drive coupling shaft 241 of the drive coupling 240 is positioned below the second drive coupling shaft 242 and the core coupling shaft 243.

In the discharge step P1, the third joint portion 226 is located uppermost, the first joint portion 216 is located lowermost, and the second joint portion 217 is located therebetween in the vertical direction.

In the ejection step P1 state, the first engagement portion 216 and the second engagement portion 217 are arranged between the core coupling shaft 243 and the 1 st to 2 nd vane coupling shaft 252. When the spit step P1 is provided, the first drive coupler shaft 241 and the 1 st-1 st blade coupler shaft 251 are disposed between the core coupler shaft 243 and the 1 st-2 nd blade coupler shaft 252.

In addition, in the discharge step P1 state, the first drive link shaft 241 and the 1 st to 1 st blade link shaft 251 are positioned below the suction panel 320. In the discharge step P1 state, the first drive coupling shaft 241 and the 1 st to 1 st blade coupling shaft 251 are positioned below the discharge port 102. The 2 nd-1 th blade coupling shaft 261 is located at the boundary of the discharge port 102.

With the arrangement as described above, the first blade 210 is located below the discharge port 102 in the discharge step P1 state. In the discharge step P1, the front end 222a of the second vane 220 is positioned below the discharge port 102, and the rear end 222b is positioned above the discharge port 102.

Next, the relative position and direction of each link in the ejection step P1 state will be described below.

The length direction of the first drive coupler body 246 is defined as D-D'. The lengthwise direction of the first blade coupler 250 is defined as L1-L1'. The lengthwise direction of the second blade coupling 260 is defined as L2-L2'.

In the spit step P1 state, the first blade link 250, the second blade link 260, and the first drive link body 246 are arranged in the same direction. In the present embodiment, the first blade coupling 250, the second blade coupling 260, and the first drive coupling body 246 are all arranged in the vertical direction when the step P1 is discharged.

Specifically, L1-L1 'of the first blade coupling 250 is configured in a near vertical manner, as is L2-L2' of the second blade coupling 260. The first drive coupling body 246 has a D-D' arranged downward in the air discharge direction.

In the discharge step P1, the first vane 210 is positioned below the discharge port 102, and the front end 222a of the second vane 220 is positioned below the discharge port 102. That is, in the case of the horizontal wind, only a part of the second blades 220 is located outside the discharge port 102, and the entire first blades 210 are located outside the discharge port 102.

In the discharge step P1, the front end 212a of the first blade 210 is positioned further forward than the front edge 102a of the discharge port 102 with respect to the discharge port 102.

< Return air prevention Structure in discharge step P1>

The discharge flow path 104 includes: an upper discharge channel 104-1 disposed in the casing shell 110; and a lower discharge passage 104-2 disposed on the front panel 300, communicating with the upper discharge passage 104-1, and located below the upper discharge passage 104-1.

In the present embodiment, the lower discharge channel 104-2 is located above the discharge port 102 of the front panel 300. The lower discharge channel 104-2 may be formed by a member constituting the front panel 300.

In the present embodiment, the lower discharge flow path 104-2 is formed by the side cover 314 positioned on the front side in the air discharge direction, the drain pan 132 positioned on the rear side in the air discharge direction, and the first block body 310 and the second block body 320 positioned on both sides in the air discharge direction.

Unlike the present embodiment, in order to provide the lower discharge flow path 104-2, an additional member whose upper and lower sides are open and whose front, rear, and both side surfaces are closed may be provided.

In the present embodiment, the inner surface of the side cover 314 providing the lower discharge flow path 104-2, the outer surface of the drain pan 132, the coupling attachment portion 404 of the first module body 410, and the coupling attachment portion 404 of the second module body 420 are defined as the discharge guide 360.

For convenience of description, the side cover 314 side is defined as the front, the drain pan 132 side as the rear, the first module body 410 side as the left direction, and the second module body 420 side as the right direction.

Therefore, the inner surface of the side cover 314 is defined as a front discharge guide 361, the outer surface of the drain pan 132 is defined as a rear discharge guide 370, and the inner surface of the coupling attachment portion 404 is defined as a side discharge guide 362.

The upper and lower surfaces of the discharge guide 360 are open. The upper surface of the discharge guide 360 communicates with the upper discharge flow path 104-1. The discharge port 102 is formed on the lower surface of the discharge guide 360.

In this embodiment, the discharge guide 360 may be disposed for each discharge port 102.

Since the horizontal wind is supplied to the discharge step P1, the discharge air can be discharged between the bottom surface 222c of the second blade 220 and the rear discharge guide 370.

A leakage space LS is defined between the bottom surface 222c of the second vane 220 and the rear discharge guide 370. The smaller the flow rate of the air discharged into the leakage space LS, the larger the flow rate of the air guided by the first blade 210 and the second blade 220.

A part of the discharged air enters the leakage space LS through an upper side of the leakage space LS and is discharged through a lower side of the leakage space LS.

When the amount of air flowing into the leakage space LS increases, there is a problem in that the amount of discharged air flowing back to the suction port 101 increases. The phenomenon in which the air discharged from the discharge port 102 is immediately changed to be sucked into the suction port 101 is defined as return air.

When the return air occurs, dew condensation occurs at the edge of the suction panel 320 where the return air occurs. Since the temperature of the air discharged to the discharge port 102 is lower than that of the indoor air, the return air lowers the temperature of the edge of the suction panel 320, and thus dew condensation may occur.

As described above, the discharged air flowing into the leakage space LS causes various problems. In particular, the narrower the distance W between the outer edge of the suction port 101 and the grill side boundary 325, the more likely the return air is to occur. If the interval W is widened to prevent return air, the area of the suction port 101 becomes narrow.

In the present embodiment, the structure of the discharge guide 360 is improved to minimize the return air. In the discharge guide 360, the return air can be minimized by improving the structure of the rear discharge guide 370 disposed on the suction port 101 side.

The back discharge guide 370 includes: a vertical guide body 372 disposed between the discharge port 102 and the suction port 101 and vertically disposed along the vertical direction; and a lower guide body 374 disposed below the vertical guide body 372, protruding from the lower side of the vertical guide body 372 toward the second vane 220, and forming the discharge port 102.

A surface exposed from the vertical guide body 372 and the lower guide body 374 to the discharge flow path 104 is defined as a guide surface 375. In this embodiment, the guide surface 375 may be a side surface of the drain pan 132 on the discharge flow path side.

The guide surface 375 includes: a first guide surface 375a, a second guide surface 375b, and a third guide surface 375c formed on an outer side surface of the vertical guide body 372; a fourth guide surface 375d is formed on the outer surface of the lower guide body 374.

The first guide surface 375a is located at the uppermost side, the second guide surface 375b is located at the lower side of the first guide surface 375a, the third guide surface 375c is located at the lower side of the second guide surface 375b, and the fourth guide surface 375d is located at the lower side of the third guide surface 375 c.

The first guide surface 375a is vertically formed and located at a position more upper than the second blade 220. The first guide surface 375a forms the lower discharge flow path 104-2.

The third guide surface 375c is vertically formed along the up-down direction. At least a portion of the third guide surface 375c is located at the same height as the second blade 220. A leakage space LS is disposed between the third guide surface 375c and the bottom surface 222c of the second vane 220.

The third guide surface 375c is located closer to the suction port 101 than the first guide surface 375 a. That is, the first guide surface 375a and the third guide surface 375c form the extended depth T in the horizontal direction when viewed in a side cross section.

The expansion depth T has an effect of expanding the sectional area of the leakage space LS.

In the present embodiment, the upper end 376a of the third guide surface 375c is located at a higher position than the second vane shaft 221 in the up-down direction.

The second guide surface 375b connects the lower end of the first guide surface 375a with the upper end 376a of the third guide surface 375 c. The second guide surface 375b may be formed as a gently curved surface or an inclined surface. The second guide surface 375b is disposed such that the upper end thereof faces the discharge flow path 104 and the lower end thereof faces the suction port 101.

The fourth guide surface 375d is connected to the lower end 376b of the third guide surface 375 b. The fourth guide surface 375d is formed in a curved shape toward the discharge port 102.

An end 376c is formed at a lower end 376c of the fourth guide surface 375 d. The end 376 is formed concavely from a lower end 376c of the fourth guide surface 375d toward the discharge opening 102.

The lower end 376c of the fourth guide surface 375d protrudes further toward the second blade 220 side than the first guide surface 375 a. An extension line of the first guide surface 375a formed vertically intersects with the fourth guide surface 375 d.

The second guide surface 376b, the third guide surface 376c, and the fourth guide surface 375d, which are recessed toward the suction flow path 103 by the expansion depth T, have an effect of expanding the leakage space LS.

In the up-down direction, the rear end 222c of the second blade is located at the height of the expanded depth T of the recess.

In the horizontal direction, the distance between the rear end 222a of the second vane and the discharge guide 370 is longer than the distance between the lower end 376c of the discharge guide and the bottom surface 222c of the second vane.

In the present embodiment, the cross section of the leakage space LS is formed to be narrower as it gets closer to the lower side. The inlet LS1 of the leakage space LS is the widest in area and the outlet LS2 is the narrowest in area.

In the horizontal direction, a cross-sectional area between the rear end 222a of the second vane and the discharge guide (specifically, the third guide surface) is wider than a cross-sectional area between the lower end of the discharge guide (specifically, the lower end of the fourth guide surface) and the bottom surface 222c of the second vane.

As described above, by forming the area of the leakage space LS to be narrow in the air flow direction, it is possible to suppress the entry of the discharged air into the leakage space LS. The pressure of the air will increase as its area becomes narrower toward the flow direction of the air.

By gradually reducing the cross-sectional area of the leakage space LS, the pressure at the outlet LS2 can be increased compared to the pressure at the inlet LS 1.

In the discharge steps P1 to P6, the leakage space LS is formed to the maximum at the discharge step P1, and the cross-sectional area of the outlet LS2 of the leakage space is also formed to the maximum.

In the discharge step P1, the cross-sectional area of the leakage space LS in the vertical direction is gradually reduced, so that the return air can be minimized. In the discharge steps P2 to P6, since the second blade 220 is closer to the rear discharge guide 370 side, the air entering the leakage space LS becomes less.

< spitting step P2>

In the horizontal wind state of the discharge step P1, the drive link 240 may be rotated in a second direction (counterclockwise direction in the drawing of the present embodiment) opposite to the first direction, thereby forming the discharge step P2.

When the blade module provides one spitting step of P2-P5, the rear side end 212b of the first blade is located at a higher position than the front side end 222a of the second blade, and is located at the same or lower position as the 2-1 blade link shaft 261.

Further, when the vane module provides one spitting step of P2 to P5, an included angle formed by the core coupling shaft 243, the first drive coupling shaft 241, and the 1-1 st vane coupling shaft 251 is formed to be acute angle in a clockwise direction with respect to a virtual straight line D-D' connecting the core coupling shaft 243 and the first drive coupling shaft 241.

In the spit step P2 state, the blade module 200 may provide a pitch wind. The oblique wind is defined as the spitting step between the horizontal wind and the vertical wind. In the present embodiment, the oblique wind represents steps P2, P3, P4, P5.

The oblique wind discharges air to the lower side than the horizontal wind discharging step P1. In the spitting step P2, the first blade 210 and the second blade 220 are both adjusted to be more downward than the step P1.

In the discharge step P2, the interval S2 between the end 222a of the second blade 220 on the front side and the end 212b of the first blade 210 on the rear side is formed wider than the interval S1 in the discharge step P1 state.

That is, when proceeding from the discharge step P1 to P2, the interval between the end 222a on the front side of the second blade 220 and the end 212b on the rear side of the first blade 210 becomes further. In the discharge step P2, the first blade 210 and the second blade 220 are arranged more vertically than in the case of P1.

When the discharge step P1 is changed to the discharge step P2, the front end 222a of the second blade 220 is lowered and the rear end 212b of the first blade 210 is raised.

In the discharge step P2 state, the front end 222a of the second blade 220 and the rear end 212b of the first blade 210 are located at a similar height.

When the discharge step P1 goes to P2, the second blade 220 rotates in the home position around the second blade shaft 221, and the first blade 210 is assembled with the drive link 240 and the first blade link 250 and rotates (swing).

In particular, when proceeding from P1 to P2, the first vane 210 slightly moves forward in the air discharge direction, and the front end 212a of the first vane slightly rotates in the first direction (clockwise in the drawing).

Since the second blade 220 is assembled to be rotatable relative to the second blade shaft 221 and the second blade link 260, the second blade link 220 rotates slightly more clockwise around the second blade shaft 221 as a center with the rotation.

The front end 222a of the second blade 220 is slightly rotated in the second direction (clockwise direction in the drawing).

When the discharge step P1 is changed to the discharge step P2, the rotation directions of the first blade 210 and the second blade 220 are opposite to each other.

In the discharge step P2, the vane motor 230 rotates by 78 degrees (P2 rotation angle), and as the vane motor 230 rotates, the first vane 210 forms a substantially 16-degree pitch (first vane P2 pitch) and the second vane 220 forms a substantially 56-degree pitch (second vane P2 pitch).

The positional relationship of the shafts forming the rotation centers of the respective links at the discharge step P2 will be described below.

Similarly to the above-mentioned step P1, in the discharge step P2, the second joint portion 217 and the first joint portion 216 of the first blade 210 are arranged obliquely toward the front in the air discharge direction.

The third joint portion 226 of the second blade 220 is disposed rearwardmost, the first joint portion 216 is disposed forwardmost, and the second joint portion 217 is disposed between the first joint portion 216 and the third joint portion 226, as viewed from the side.

In the state P2, the third joint 226, the second joint 217, and the first joint 216 are arranged so as to face forward and downward in the air discharge direction when the blade module 200 is viewed from the side.

The third joint 226 moves slightly further downward and the first joint 216 and the second joint 217 move slightly further forward with respect to the discharge step P2. That is, the second blade 220 and the first blade 210 are spaced apart slightly more.

In the spit step P2 state, the arrangement of the first blade link 250, the second blade link 260, and the drive link 240 is similar to the spit step P1.

In the spit step P2 state, the 1 st to 1 st blade link shaft 251 of the first blade link 250 is located on the lower side of the 1 st to 2 nd blade link shaft 252. In the spit step P2 state, the 2 nd-1 st blade link shaft 261 of the second blade link 260 is located on the lower side of the 2 nd-2 nd blade link shaft portion 262. In the ejection step P2 state, the first drive coupling shaft 241 of the drive coupling 240 is positioned below the second drive coupling shaft 242 and the core coupling shaft 243.

In the discharge step P2 state, the second blade shaft 221 is positioned on the uppermost side, the third joint portion 226 is positioned below the second blade shaft 221, the second joint portion 217 is positioned below the third joint portion 226, and the first joint portion 216 is positioned below the second joint portion 217.

In the ejection step P2 state, the second joint 217 rotates slightly further toward the 1 st to 2 nd vane coupling shaft 252 about the core coupling shaft 243.

In the discharge step P2 state with the suction panel 320 or the discharge port 102 as a reference, the entire first vane 210 is positioned below the discharge port 102. In the discharge step P2, the front end 222a of the second vane 220 is positioned below the discharge port 102, and the rear end 222b is positioned above the discharge port 102.

Thus, in the discharge step P2 state, the first drive coupling shaft 241 and the 1 st to 1 st blade coupling shaft 251 are positioned below the suction panel 320. In the discharge step P2 state, the first drive coupling shaft 241 and the 1 st to 1 st blade coupling shaft 251 are positioned below the discharge port 102. The 2 nd-1 th blade coupling shaft 261 is located at the boundary of the discharge port 102.

Next, the relative position and direction of each link in the discharge step P2 state will be described below.

In the discharge step P2 state, the first blade coupling 250 and the second blade coupling 260 are arranged in substantially the same direction, and the first drive coupling body 246 is arranged obliquely toward the front lower side. In particular, in the discharge step P2 state, the first blade coupling 250 and the second blade coupling 260 are arranged substantially vertically.

Specifically, when the discharge step P1 state is changed to the discharge step P2 state, L1-L1' of the first blade coupling 250 slightly rotates toward the air discharge direction side. When the discharge step P1 state is changed to the discharge step P2 state, L2-L2' of the second blade coupling 260 slightly rotates toward the opposite side of the air discharge direction. When the discharge step P1 state is changed to the discharge step P2 state, the D-D' of the first drive coupling body 246 rotates slightly further toward the air discharge direction side.

In the discharge step P2, the entire first vane 210 is positioned below the discharge port 102, and only the front end 222a of the second vane 220 is positioned below the discharge port 102.

When the discharge step P1 is changed to the discharge step P2, the front end 212a of the first blade 210 moves slightly forward relative to the front edge 102a of the discharge port 102 with respect to the discharge port 102.

< spitting step P3>

In the discharge step P2 state, the drive link 240 may be rotated in a second direction (counterclockwise in the drawing of the present embodiment) opposite to the first direction, thereby forming a discharge step P3.

In the spitting step P3 state, the blade module 200 may provide a diagonal wind spitting more downward than when the step P2 is spitted.

The oblique wind of the discharge step P3 discharges air to the lower side than the oblique wind of the step P2. In the spit step P3, the first blade 210 and the second blade 220 are both adjusted to be more downward than the step P2.

In the discharge step P3, the interval S3 between the end 222a on the front side of the second blade 220 and the end 212b on the rear side of the first blade 210 is wider than the interval S2 in the discharge step P2 state.

That is, when proceeding from the discharge step P2 to P3, the interval between the end 222a on the front side of the second blade 220 and the end 212b on the rear side of the first blade 210 becomes further. In the discharge step P3, the first blade 210 and the second blade 220 are arranged more vertically than in the case of P2.

When the discharge step P2 is changed to the discharge step P3, the front end 222a of the second blade 220 is further lowered and the rear end 212b of the first blade 210 is further raised.

In the discharge step P3 state, the front end 222a of the second blade 220 is positioned below the rear end 212b of the first blade 210.

When the discharge step P2 goes to P3, the second blade 220 rotates in the home position around the second blade shaft 221, and the first blade 210 is assembled with the drive link 240 and the first blade link 250 and rotates (swing).

When proceeding from the spit step P2 to P3, the first blade 210 is positioned at the near home position and rotates in the first direction (clockwise). When the ejection step P2 goes to P3, the second blade 220 further rotates in the first direction (clockwise direction).

When the discharge step P2 goes to P3, the first blade 210 does not advance in the discharge direction, but instead rotates in the first direction (clockwise) at the home position.

When the discharge step P2 goes to P3, the front end 222a of the second vane 220 slightly rotates in the first direction (clockwise direction) as the second vane link 220 descends.

When the discharge step P2 is changed to the discharge step P3, the rotation directions of the first blade 210 and the second blade 220 become the same.

In the discharge step P3, the vane motor 230 rotates by 95 degrees (P3 rotation angle), the first vane 210 forms a substantially 29-degree pitch (first vane P3 pitch) and the second vane 220 forms a substantially 67-degree pitch (second vane P3 pitch) as the vane motor 230 rotates.

The positional relationship of the shafts forming the rotation centers of the respective links at the discharge step P3 will be described below.

Similarly to the above-mentioned step P2, in the discharge step P3, the second joint portion 217 and the first joint portion 216 of the first blade 210 are arranged obliquely toward the front in the air discharge direction.

The third joint 226 moves slightly further downward based on the discharge step P3. As the first blade coupling 250 and the first drive coupling body 246 rotate in the second direction, the first engagement portion 216 and the second engagement portion 217 rise upward with respect to the discharge step P3.

Since the length of the first drive coupler body 246 is shorter than the length of the first blade coupler 250, the upper height of the second joint 217 will be greater.

In the spit step P3 state, the arrangement of each shaft in the drive link 240, the first blade link 250, and the second blade link 260 is similar to the spit step P2 state.

However, the relative heights of the first drive link shaft 241, the 1 st-1 st blade link shaft 251, and the 2 nd-1 st blade link shaft 261, which rotate as the drive links 240, the first blade links 250, and the second blade links 260 operate, will change.

In the spit step P3 state, the first drive link shaft 241 ascends and the 2 nd-1 st blade link shaft 261 descends to be formed at a similar height in the up-down direction.

When the discharge step P2 is changed to the P3 state, the second engagement portion 217 rotates slightly further toward the 1 st-2 nd vane coupling shaft 252 about the core coupling shaft 243, and the second engagement portion 217 and the 2 nd-1 st vane coupling shaft 261 become farther apart.

In the ejection step P3 state, the 2 nd to 2 nd vane coupling shaft portion 262 is located at a position lower than the core coupling shaft 243.

When the discharge step P2 state is changed to the discharge step P3 state, the 2 nd to 1 st blade coupling shaft 261 moves more rearward than the 2 nd to 2 nd blade coupling shaft portion 262.

The positions of the first blade 210 and the second blade 220 in the discharge step P3 state are similar to the discharge step P2 with respect to the suction panel 320 and the discharge port 102.

Thus, in the discharge step P3 state, the first drive coupling shaft 241 and the 1 st to 1 st blade coupling shaft 251 are positioned below the suction panel 320 and the discharge port 102. The 2 nd-1 th blade coupling shaft 261 is located at the boundary of the discharge port 102.

Next, the relative position and direction of each link in the ejection step P3 state will be described below.

In the discharge step P3 state, the first blade link 250 and the second blade link 260 are arranged in opposite directions to each other.

In the discharge step P3 state, the first drive coupling body 246 and the first blade coupling 250 are disposed obliquely toward the front lower side. In the discharge step P3 state, the second drive coupling body 247 is disposed so as to face the rear side, and the second blade coupling 260 is disposed so as to face the rear lower side.

Specifically, when the discharge step P2 state is changed to the discharge step P3 state, L1-L1' of the first blade coupling 250 slightly rotates toward the air discharge direction side. When the discharge step P2 state is changed to the discharge step P3 state, L2-L2' of the second blade coupling 260 slightly rotates toward the opposite side of the air discharge direction. When the discharge step P2 state is changed to the discharge step P3 state, the D-D' of the first drive coupling body 246 rotates slightly further toward the air discharge direction side.

When the discharge step P2 is changed to the discharge step P3, the first blade 210 and the second blade 220 both rotate or rotate slightly more vertically downward with respect to the discharge port 102.

< spitting step P4>

In the discharge step P3 state, the drive link 240 may be rotated in a second direction (counterclockwise in the drawing of the present embodiment) opposite to the first direction, thereby forming a discharge step P4.

In the spitting step P4 state, the blade module 200 may provide a diagonal wind spitting more downward than when the step P3 is spitted. The oblique wind of the discharge step P4 discharges air to the lower side than the oblique wind of the step P3.

In the discharge step P4, the first blade 210 and the second blade 220 are both adjusted to be located further downward than the discharge step P3.

In the discharge step P4, the interval S4 between the end 222a on the front side of the second blade 220 and the end 212b on the rear side of the first blade 210 is wider than the interval S3 in the discharge step P3 state.

When proceeding from the discharge step P3 to P4, the interval between the end 222a on the front side of the second blade 220 and the end 212b on the rear side of the first blade 210 becomes further. In the discharge step P4, the first blade 210 and the second blade 220 are arranged more vertically than in the case of P3.

When the discharge step P3 is changed to the discharge step P4, the front end 222a of the second blade 220 is further lowered, and the rear end 212b of the first blade 210 is further raised.

In the discharge step P4, the end 222a on the front side of the second blade 220 is located at a position lower than the discharge step P3, and the end 212b on the rear side of the first blade 210 is located at a position higher than the discharge step P3.

When the discharge step P3 proceeds to P4, the second blade 220 rotates at the home position around the second blade shaft 221. When the discharge step P3 goes to P4, the first engaging portion 216 of the first blade 210 stays at the near-home position, and the second engaging portion 217 rotates in the first direction (clockwise direction) about the first engaging portion 216.

That is, when proceeding from the spit step P3 to P4, the first blade 210 is not nearly moved, but is rotated in the home position. When the ejection step P3 proceeds to P4, the first blade 210 rotates in the first direction (clockwise direction) around the first joint 216.

When the ejection step P3 goes to P4, the second blade 220 further rotates in the first direction (clockwise direction).

When the discharge step P3 goes to P4, the front end 222a of the second vane 220 slightly rotates in the first direction (clockwise direction) as the second vane link 220 descends.

When the discharge step P3 is changed to the discharge step P4, the rotation directions of the first blade 210 and the second blade 220 become the same.

When changing from the discharge step P3 to the discharge step P4, the 1 st to 1 st blade link shaft 251 may be located further forward than the 1 st to 2 nd blade link shaft 252.

In the discharge step P4, the vane motor 230 rotates by 100 degrees (P4 rotation angle), and the first vane 210 forms a substantially 35-degree pitch (first vane P4 pitch) and the second vane 220 forms a substantially 70-degree pitch (second vane P4 pitch) as the vane motor 230 rotates.

The positional relationship of the shafts forming the rotation centers of the respective links at the discharge step P4 will be described below.

Similarly to the above-mentioned step P3, in the discharge step P4, the second joint portion 217 and the first joint portion 216 of the first blade 210 are arranged obliquely toward the front in the air discharge direction.

The third joint 226 moves slightly further downward based on the discharge step P4. With the discharge step P4 as a reference, the first engagement portion 216 of the first blade coupling 250 is slightly raised in the second direction (counterclockwise direction) or positioned at a nearly home position, and the second engagement portion 217 rotates in the first direction (clockwise direction) about the first engagement portion 216.

When the first blade 210 is rotated at or above the discharge step P4, the first blade 210 moves in the direction opposite to the current direction of travel. From the ejection step P1 to the ejection step P4, the first blade 210 moves in the air ejection direction and rotates in the first direction (clockwise) about the second joint 217.

In the spit step P4 state, the arrangement of each shaft in the drive link 240, the first blade link 250, and the second blade link 260 is similar to the spit step P3 state. Only, in the ejection step P4 state, the longitudinal direction of the first drive coupling body 246, the second engagement portion 217, and the first engagement portion 216 are arranged in a line.

The relative heights of the first

drive link shaft

241, 1 st-1 st blade link shaft 251, 2 st-1 st blade link shaft 261, which rotate as the drive links 240, first blade links 250, and second blade links 260 operate, will change.

In the spit step P4 state, the first drive link shaft 241 ascends, the 2 nd to 1 st blade link shaft 261 descends, and the first drive link shaft 241 is located at a slightly higher position than the 2 nd to 1 st blade link shaft 261.

When the discharge step P3 is changed to the P4 state, the second engaging portion 217 is slightly rotated toward the 1 st to 2 nd vane coupling shaft 252 about the core coupling shaft 243, and the core coupling shaft 243, the first drive coupling shaft 241, and the 1 st to 1 st vane coupling shaft 251 are linearly arranged in a row.

In the ejection step P4 state, the 2 nd to 2 nd vane coupling shaft portion 262 is located at a position lower than the core coupling shaft 243.

When the discharge step P3 state is changed to the discharge step P4 state, the 2 nd to 1 st blade coupling shaft 261 is slightly moved more rearward than the 2 nd to 2 nd blade coupling shaft portion 262.

The positions of the first blade 210 and the second blade 220 in the discharge step P4 state are similar to the discharge step P3 with respect to the suction panel 320 and the discharge port 102.

Next, the relative position and direction of each link in the ejection step P4 state will be described below.

When the discharge step P3 is changed to the discharge step P4 state, the first blade link 250 and the second blade link 260 are arranged in opposite directions to each other. When the discharge step P3 is changed to the discharge step P4 state, the first blade coupling 250 may be rotated almost not, but only the second blade coupling 260 may be rotated to the rear side.

In the present embodiment, there are no additional structural elements for limiting the movement of the first blade coupling 250. In this embodiment, movement of the first blade coupling 250 may be limited by the combined relationship of the first blade coupling 250, the first blade 210, and the first drive coupling body 246.

In the discharge step P4 state, the first drive coupling body 246 and the first blade coupling 250 are disposed obliquely toward the front lower side. In the discharge step P4 state, the second drive coupling body 247 is disposed so as to face the rear side, and the second blade coupling 260 is disposed so as to face the rear lower side.

In the present embodiment, when the discharge step P3 state is changed to the discharge step P4 state, L1-L1' of the first blade coupling 250 can be rotated slightly more toward the air discharge direction side. When the discharge step P3 state is changed to the discharge step P4 state, L2-L2' of the second blade coupling 260 slightly rotates toward the opposite side of the air discharge direction. When the discharge step P3 state is changed to the discharge step P4 state, the D-D' of the first drive coupling body 246 rotates slightly further toward the air discharge direction side. A virtual straight line connecting the first joint 216 and the second joint 217 is defined as B-B'.

In the spit step P4, D-D 'and B-B' are connected as a straight line and form an angle of 180 degrees.

In the ejection steps P1 to P3, D-D 'and B-B' form an angle of 180 degrees or less, in the ejection step P4 form an angle of 180 degrees, and in the ejection steps P5 and P6 form an angle of 180 degrees or more.

< spitting step P5>

In the discharge step P4 state, the drive link 240 may be rotated in a second direction (counterclockwise in the drawing of the present embodiment) opposite to the first direction, thereby forming a discharge step P5.

In the spitting step P5 state, the blade module 200 may provide a diagonal wind spitting more downward than when the step P4 is spitted. The oblique wind of the discharge step P5 discharges air to the lower side than the oblique wind of the discharge step P4.

In the discharge step P5, the first blade 210 and the second blade 220 are both adjusted to be slightly more downward than the discharge step P4.

In the discharge step P5, the interval S5 between the end 222a on the front side of the second blade 220 and the end 212b on the rear side of the first blade 210 is wider than the interval S4 in the discharge step P4 state.

When proceeding from the discharge step P4 to P5, the interval between the end 222a on the front side of the second blade 220 and the end 212b on the rear side of the first blade 210 becomes further. In the discharge step P5, the first blade 210 and the second blade 220 are arranged more vertically than in the case of P4.

When the discharge step P4 is changed to the discharge step P5, the front end 222a of the second blade 220 is further lowered, and the rear end 212b of the first blade 210 is further raised.

In the discharge step P5, the end 222a on the front side of the second blade 220 is located at a position lower than the discharge step P4, and the end 212b on the rear side of the first blade 210 is located at a position higher than the discharge step P4.

When the discharge step P4 proceeds to P5, the second blade 220 rotates at the home position around the second blade shaft 221. When the discharge step P4 goes to P5, the first engaging portion 216 of the first blade 210 stays at the near-home position, and the second engaging portion 217 rotates slightly further in the first direction (clockwise direction) around the first engaging portion 216.

That is, when the discharge step P4 goes to P5, the first blade 210 is not almost moved but rotated at the home position around the first engagement portion 216.

When the discharge step P4 goes to P5, the first blade 210 slightly rotates in the first direction (clockwise direction) around the first joint 216. When the discharge step P4 goes to P5, the second blade 220 rotates slightly more in the first direction (clockwise direction).

When the discharge step P4 goes to P5, the front end 222a of the second vane 220 slightly rotates in the first direction (clockwise direction) as the second vane link 220 descends.

When the discharge step P4 is changed to the discharge step P5, the rotation directions of the first blade 210 and the second blade 220 become the same.

When changing from the discharge step P4 to the discharge step P5, the 1 st to 1 st blade link shaft 251 may be located further forward than the 1 st to 2 nd blade link shaft 252.

In the discharge step P5, the vane motor 230 rotates by 105 degrees (P5 rotation angle), and as the vane motor 230 rotates, the first vane 210 forms a substantially 44-degree pitch (first vane P5 pitch) and the second vane 220 forms a substantially 72-degree pitch (second vane P5 pitch).

The positional relationship of the shafts forming the rotation centers of the respective links at the discharge step P5 will be described below.

Similarly to the ejection step P4, in the ejection step P5, the second joint portion 217 and the first joint portion 216 of the first blade 210 are arranged obliquely toward the front in the ejection direction of the air.

The third engagement portion 226 moves slightly further downward with the discharge step P5 as a reference, and the second engagement portion 217 of the first blade coupling 250 rotates in the first direction (clockwise direction) about the first engagement portion 216.

In the ejection step P5, the second joint portion 217 is disposed so as to project toward the 1 st to 2 nd blade coupling shaft 252 side with reference to a virtual straight line connecting the core coupling shaft 243 and the first joint portion 216.

In the spit step P5 state, the arrangement of each shaft in the drive link 240, the first blade link 250, and the second blade link 260 is similar to the spit step P4 state.

The relative heights of the first

drive link shaft

When the discharge step P4 state is changed to the discharge step P5 state, the first drive link shaft 241 rises and the 2 nd to 1 st blade link shaft 261 falls. Thus, in the spit step P5, the first drive link shaft 241 is located at a slightly higher position than the 2 nd-1 st blade link shaft 261.

When the discharge step P4 is changed to the discharge step P5, the second engaging portion 217 rotates about the core coupling shaft 243, and the second engaging portion 217 slightly rotates toward the 1 st to 2 nd vane coupling shaft 252.

In the ejection step P4, the core coupling shaft 243, the first drive coupling shaft 241, and the 1 st to 1 st blade coupling shaft 251 are arranged in a row, and in the ejection step P5, the core coupling shaft 243, the first drive coupling shaft 241, and the 1 st to 1 st blade coupling shaft 251 form an obtuse angle of 180 degrees or more (with reference to D-D').

In the ejection step P5 state, the 2 nd to 2 nd vane coupling shaft portion 262 is located at a position lower than the core coupling shaft 243. When proceeding from the ejection step P1 to the ejection step P6, the included angle formed by the core coupler shaft 243, the 2 nd-2 nd vane coupler shaft portion 262, and the third engagement portion 226 will gradually increase.

However, when the ejection step P1 is advanced to the ejection step P6, the included angle formed by the core coupling shaft 243, the 2 nd-2 nd vane coupling shaft portion 262, and the third engagement portion 226 is formed to be within 180 degrees.

When the ejection step P4 state is changed to the ejection step P5 state, the 2 nd to 1 st vane coupling shaft 261 is moved slightly more rearward than the 2 nd to 2 nd vane coupling shaft portion 262 and is positioned between the third joint portion 226 and the core coupling shaft 243.

The positions of the first blade 210 and the second blade 220 in the discharge step P5 state are similar to the discharge step P4 with respect to the suction panel 320 and the discharge port 102.

Next, the relative position and direction of each link in the ejection step P5 state will be described below.

When the discharge step P4 is changed to the discharge step P5 state, the first blade link 250 and the second blade link 260 are arranged in opposite directions to each other. When the discharge step P4 is changed to the discharge step P5 state, the first blade coupling 250 may be almost not rotated, and only the second blade coupling 260 may be further rotated to the rear side.

In the spit step P5 state, the arrangement of the first drive link body 246, first blade link 250, and second blade link 260 is similar to the spit step P4 state.

In the present embodiment, when the discharge step P4 state is changed to the discharge step P5 state, L1-L1' of the first blade coupling 250 can be rotated in the opposite direction to the discharge direction of the air. When the discharge step P4 state is changed to the discharge step P5 state, L2-L2' of the second blade coupling 260 slightly rotates toward the opposite side of the air discharge direction. When the discharge step P4 state is changed to the discharge step P5 state, the first drive coupling body 246 rotates D-D' in the air discharge direction side.

In the ejection step P5, the angle between D-D 'and B-B' is an obtuse angle.

When the discharge step P1 is advanced to the discharge step P4 from the state of the discharge step P1, the front end 212a of the first blade is moved in the air discharge direction (front side), and when the discharge step P4 is advanced to the discharge step P6, the front end 212a of the first blade is moved in the opposite side (rear side) to the air discharge direction.

Thus, when the discharge step P6 is reached from the discharge step P4 state, the first blade 210 can be disposed somewhat more vertically.

< spitting step P6>

In the present embodiment, the state of the module blade 200 that discharges the step P6 is defined as the vertical wind.

The vertical wind means that the air discharged from the discharge port 102 is discharged to the lower side of the discharge port 102, not the first blade 210 and the second blade 220 constituting the module blade 200 are vertically arranged.

In the discharge step P5 state, the drive link 240 may be rotated in a second direction (counterclockwise in the drawing of the present embodiment) opposite to the first direction, thereby forming a discharge step P6. In the ejection step P6, the flow of the ejection air in the horizontal direction is minimized, and the flow thereof in the vertical direction is maximized. The vertical wind of the discharge step P6 discharges air to the lower side than the oblique wind of the discharge step P5.

In the discharge step P6, the first blade 210 and the second blade 220 are both adjusted to be slightly more downward than the discharge step P5.

When the discharge step P6 is provided, the rear end 222b of the second blade is located above the discharge port, the front end 222a of the second blade is located below the discharge port, and the rear end 212b of the first blade is located higher than the front end 222a of the second blade and higher than the discharge port. The front end 212a of the first blade is located at a lower position than the front end 222a of the second blade.

When the discharge step P6 is provided, the rear end 212b of the first blade is disposed toward the discharge port 102.

In the discharge step P6, the interval S6 between the end 222a on the front side of the second blade 220 and the end 212b on the rear side of the first blade 210 is wider than the interval S5 in the discharge step P5 state.

When proceeding from the discharge step P5 to P6, the interval between the end 222a on the front side of the second blade 220 and the end 212b on the rear side of the first blade 210 becomes further. In the discharge step P6, the first blade 210 and the second blade 220 are arranged more vertically than in the case of P5.

When the discharge step P5 is changed to the discharge step P6, the front end 222a of the second blade 220 is further lowered, and the rear end 212b of the first blade 210 is further raised.

In the discharge step P6, the end 222a on the front side of the second blade 220 is located at a position lower than the discharge step P5, and the end 212b on the rear side of the first blade 210 is located at a position higher than the discharge step P5.

When the discharge step P5 proceeds to P6, the second blade 220 rotates at the home position around the second blade shaft 221. When the discharge step P5 goes to P6, the first engaging portion 216 of the first blade 210 stays at the near-home position, and the second engaging portion 217 rotates slightly further in the first direction (clockwise direction) around the first engaging portion 216.

That is, when proceeding from the discharge step P5 to P6, the first blade 210 may move to the rear side. When the discharge step P5 goes to P6, the first blade 210 rotates slightly further in the first direction (clockwise direction) about the first joint 216, and therefore the front end 212a of the first blade 210 moves rearward.

When the discharge step P5 goes to P6, the second blade 220 rotates slightly more in the first direction (clockwise direction). When the discharge step P5 goes to P6, the front end 222a of the second vane 220 slightly rotates in the first direction (clockwise direction) as the second vane link 220 descends.

When the discharge step P5 is changed to the discharge step P6, the rotation directions of the first blade 210 and the second blade 220 become the same.

In the discharge step P6, the vane motor 230 rotates by 110 degrees (P5 rotation angle), and as the vane motor 230 rotates, the first vane 210 forms a substantially 56-degree pitch (first vane P6 pitch) and the second vane 220 forms a substantially 74-degree pitch (second vane P6 pitch).

The positional relationship of the shafts forming the rotation centers of the respective links at the discharge step P6 will be described below.

Similarly to the ejection step P5, in the ejection step P6, the second joint portion 217 and the first joint portion 216 of the first blade 210 are arranged obliquely toward the front in the ejection direction of the air.

The third engagement portion 226 moves slightly further downward with the discharge step P6 as a reference, and the second engagement portion 217 of the first blade coupling 250 rotates in the first direction (clockwise direction) about the first engagement portion 216.

In the ejection step P6, the second joint 217 is disposed to slightly protrude toward the 1 st to 2 nd vane coupling shaft 252 side with reference to a virtual straight line connecting the core coupling shaft 243 and the first joint 216.

In the spit step P6 state, the arrangement of each shaft in the drive link 240, the first blade link 250, and the second blade link 260 is similar to the spit step P5 state.

The relative heights of the first

drive link shaft

When the ejection step P6 is provided, the rear end 212b of the first vane is positioned below the core coupling shaft 243 and forward of the core coupling shaft 243. When the discharge step P6 is provided, the front end 212a of the first blade is positioned more rearward than the front edge 102a of the discharge port.

When the discharge step P5 state is changed to the discharge step P6 state, the first drive link shaft 241 rises and the 2 nd to 1 st blade link shaft 261 falls. Thus, in the spit step P6, the first drive link shaft 241 is located at a higher position than the 2 nd to 1 st blade link shaft 261.

When the spit step P6 is provided, the 2 nd-2 nd blade link shaft portion 262 is located at a lower position than the mandrel link shaft 243, the first drive link shaft 241 is located at a lower position than the 2 nd-2 nd blade link shaft portion 262, the 2 nd-1 st blade link shaft 261 is located at a lower position than the first drive link shaft 241, and the 1 st-1 st blade link shaft 251 is located at a lower position than the 2 nd-1 st blade link shaft 261.

When the discharge step P5 is changed to the discharge step P6, the second engaging portion 217 rotates about the core coupling shaft 243, and the second engaging portion 217 slightly rotates toward the 1 st to 2 nd vane coupling shaft 252.

In the ejection step P6, at least a portion of the second engagement portion 217 may overlap with the first blade coupling body 255 as viewed from the side. Since the second engagement portion 217 is moved to a position overlapping the first blade coupling body 255, the first blade 210 can be arranged more vertically.

In the ejection step P6, the second joint 217 does not move forward beyond L1-L1'. The second engagement portion 217 does not move further forward than the first blade coupling body 255. In the case where the second engagement portion 217 is excessively moved forward, it may not be restored to the home position even if the vane motor is rotated in the first direction (clockwise).

In order to prevent the over-rotation of the drive coupler 240 as described above, in the ejection step P6, the first drive coupler body 246 and the one side end 270a of the stopper 270 are caused to interfere with each other. The first drive coupler body 246 is supported against the stop 270 and further rotation thereof will be limited.

In the ejection step P6, the core coupling shaft 243, the first drive coupling shaft 241, and the 1 st to 1 st vane coupling shaft 251 form an obtuse angle of 180 degrees or more (clockwise with reference to D-D').

When changing from the discharge step P5 to the discharge step P6, the 1 st to 1 st blade link shaft 251 may be located further forward than the 1 st to 2 nd blade link shaft 252.

In the state of the spit step P6, the 2 nd to 2 nd vane coupling shaft portion 262 is arranged on the lower side of the core coupling shaft 243, the second engaging portion 217 is arranged on the lower side of the 2 nd to 2 nd vane coupling shaft portion 262, the third engaging portion 226 is arranged on the lower side of the second engaging portion 217, and the first engaging portion 216 is arranged on the lower side of the third engaging portion 226.

When the ejection step P5 state is changed to the ejection step P6 state, the 2 nd to 1 st vane coupling shaft 261 is moved slightly more rearward than the 2 nd to 2 nd vane coupling shaft portion 262 and is positioned between the third joint portion 226 and the core coupling shaft 243.

Next, the relative position and direction of each link in the ejection step P6 state will be described below.

When the discharge step P5 is changed to the discharge step P6 state, the first blade link 250 and the second blade link 260 are arranged in opposite directions to each other. When the discharge step P5 is changed to the discharge step P6 state, the first blade coupling 250 may be almost not rotated, and only the second blade coupling 260 may be further rotated to the rear side.

In the spit step P6 state, the arrangement of the first drive link body 246, first blade link 250, and second blade link 260 is similar to the spit step P5 state.

When the spit step P6 is provided, the 2 nd to 1 st blade link shaft 261 is located at a position more forward than the second blade shaft 221, the 2 nd to 2 nd blade link shaft portion 262 is located more forward than the 2 nd to 1 st blade link shaft 261, the core link shaft 243 is located more forward than the 2 nd to 2 nd blade link shaft portion 262, the first drive link shaft 241 is located more forward than the core link shaft 243, and the 1 st to 1 st blade link shaft 251 is located more forward than the first drive link shaft 241.

In the present embodiment, when the discharge step P5 state is changed to the discharge step P6 state, L1-L1' of the first blade coupling 250 can be rotated slightly further to the opposite side of the discharge direction of the air. When the discharge step P5 state is changed to the discharge step P6 state, L2-L2' of the second blade coupling 260 slightly rotates toward the opposite side of the air discharge direction. When the discharge step P5 state is changed to the discharge step P6 state, the D-D' of the first drive coupling body 246 can be rotated slightly further to the opposite side of the air discharge direction.

The obtuse angle in the discharge step P6 as the angle between D-D 'and B-B' is greater than the obtuse angle in the discharge step P5 as the angle between D-D 'and B-B'.

When the discharge step P1 is reached the discharge step P4, the front end 212a of the first vane moves in the air discharge direction (front side).

When the discharge step P1 state is advanced to the discharge step P4, the first blade link 250 rotates in the second direction (counterclockwise direction), and when the discharge step P4 state is advanced to the discharge step P6, the first blade link 250 rotates in the first direction (clockwise direction).

Thus, when the discharge step P1 is reached the discharge step P4, the front end 212a of the first blade rotates in the second direction and rises. However, when the discharge step P4 is reached the discharge step P6, the front end 212a of the first blade rotates in the first direction and descends. That is, the movement of the first blade 210 is changed based on the discharge step P4.

When the discharge step P4 is reached to the discharge step P6, the first blade 210 can be arranged more vertically. In the ejection step P6 state, the rear end 212b of the first vane 210 is positioned forward of the core coupling shaft 243.

When the blade module 200 forms a vertical wind in the spitting step P6, the first blade 210 and the second blade 220 are spaced apart to the maximum extent.

When the step P6 is discharged, one or more of the second engagement portion 217 and the first drive coupling shaft 241 overlap the first blade coupling 250 when viewed from the side of the blade module 200.

In the case of the spitting step P6, one or more of the second engaging portion 217 or the first drive link shaft 241 is located on or behind the line L1-L1' of the first blade link 250 as viewed from the side of the blade module 200.

When the step P6 is discharged, the rear end 212b of the first blade 210 is positioned inside the discharge port 102 and higher than the outer surface of the side cover 314 when viewed from the side of the blade module 200. Since the rear end 212b of the first vane 210 is positioned inside the discharge port 102, the air in the discharge port 102 can be guided in a more vertical direction.

While the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the embodiments, but may be manufactured in various forms different from each other, and it will be understood by those skilled in the art to which the present invention pertains that the present invention may be implemented in other specific forms without changing the technical idea or essential features of the present invention. The embodiments described above are therefore illustrative in all respects, rather than restrictive.

Description of reference numerals

100: the casing 101: suction inlet

102: the discharge port 103: suction flow path

104: discharge flow path 110: shell casing

120: front panel 130: indoor heat exchanger

140: indoor air supply fan 200: blade module

210: first blade 212 a: end of the front side of the first blade

212b, and (3 b): rear end of the first blade

216: first joint 217: second joint part

220: second blade 222 a: end of the front side of the second blade

222 b: rear end of the second blade

226: third engaging portion 230: vane motor

240: the drive coupling 241: first drive coupling shaft

242: second drive coupler shaft 243: core coupling piece shaft

245: the drive coupler body 246: first drive coupler body

247: second drive coupling body 248: core body

250: first blade coupling 260 second blade coupling

251: 1-1 blade link shaft 252: 1 st-2 nd blade coupling shaft

261: 2-1 blade link shaft 262: 2 nd-2 nd blade coupling member shaft

300: the front panel 310: front body

320: the suction grill 330: front filter

400: the module main body 410: first module body

420: second module body 500: lifting piece

Claims

1. An air conditioner in which, in a state where,

the method comprises the following steps:

a front panel having a suction port and a discharge port;

a lower discharge flow path communicating with the discharge port and extending in the vertical direction above the discharge port;

a first blade disposed at the discharge port and assembled to the front panel so as to be relatively rotatable;

a second blade which is disposed behind the discharge port with respect to the first blade and is relatively rotatably assembled to the front panel; and

a discharge guide extending in a vertical direction behind the second vane,

the discharge guide includes:

a first guide surface located on an upper side of the second blade;

a second guide surface extending downward from the first guide surface and inclined rearward at an upper side of the second blade;

a third guide surface extending downward from the second guide surface and facing the second blade; and

a fourth guide surface extending downward from the third guide surface and formed in a circular arc toward the second blade,

the second guide surface is recessed rearward at an upper side of the second blade to form an expanded depth,

a leakage space having a smaller cross-sectional area toward the lower side is formed between the second blade and the third guide surface and the fourth guide surface, and a recessed end is formed at the lower end of the fourth guide surface.

2. The air conditioner according to claim 1,

a cross-sectional area between a rear end of the second vane and the discharge guide is wider than a cross-sectional area between a lower end of the discharge guide and a bottom surface of the second vane in a horizontal direction.

3. The air conditioner according to claim 1,

the discharge guide forms the lower discharge flow path, is positioned on the suction port side of the lower discharge flow path, and is concavely formed from the lower discharge flow path to the suction port side,

in the up-down direction, an end of the second blade on the rear side is located at the recessed portion.

4. The air conditioner according to claim 1,

the first guide surface, the second guide surface, the third guide surface, and the fourth guide surface are exposed to the lower discharge flow path,

the third guide surface is disposed closer to the suction port side than the first guide surface,

the second guide surface and the third guide surface are recessed toward the suction port side.

5. The air conditioner according to claim 1,

the rear end of the second blade is located at the height of the third guide surface in the vertical direction.

6. The air conditioner according to claim 1,

the cross-sectional area between the bottom surface of the second vane and the discharge guide gradually narrows as the third guide surface approaches the fourth guide surface.

7. The air conditioner according to claim 1,

the first guide surface and the third guide surface are formed perpendicularly.

8. The air conditioner according to claim 1,

the lower end of the fourth guide surface is formed in a curved surface shape protruding toward the second blade side.

9. The air conditioner according to claim 1,

further comprising:

a vane motor assembled to the front panel for providing a driving force;

a driving coupling member which is assembled to the front panel so as to be relatively rotatable, is coupled to the vane motor, rotates by a driving force of the vane motor, and includes a first driving coupling member body and a second driving coupling member body which form a predetermined angle;

a first blade coupling member which is assembled to the module body in which the blade motor is disposed and the first blade so as to be rotatable relative to each other, the first blade coupling member being disposed forward of the driving coupling member; and

a second blade coupling rotatably assembled with the second drive coupling body and the second blade, respectively.

10. The air conditioner according to claim 9,

the second blade includes:

a second blade body formed to extend in a longitudinal direction of the discharge port;

a second engagement rib projecting upward from the second blade body, being relatively rotatably combined with the second blade coupling; and

a pair of second vane shafts formed on the second vane body and rotatably coupled to the front panel,

the second vane shaft is located below the second guide surface.

11. The air conditioner according to claim 9,

when the first blade and the second blade provide a discharge step (P1) which is one of a plurality of discharge steps,

the rear end of the second blade is located above the discharge port, the front end of the second blade is located below the discharge port, the rear end of the first blade is located below the front end of the second blade, and the front end of the first blade is located below the rear end of the first blade.

12. The air conditioner according to claim 9,

a sectional area between an end of the second blade on the rear side and the third guide surface is wider than a sectional area between a lower end of the fourth guide surface and the bottom surface of the second blade in the horizontal direction.

13. The air conditioner according to claim 9,

a rear end of the second blade is positioned above the discharge port, a front end of the second blade is positioned below the discharge port, a rear end of the first blade is positioned below a front end of the second blade, and a front end of the first blade is positioned below a rear end of the first blade,

a sectional area between an end of the second blade on the rear side and the third guide surface is wider than a sectional area between a lower end of the fourth guide surface and the bottom surface of the second blade.

14. The air conditioner according to claim 9,

the horizontal sectional area of the leakage space gradually decreases from the upper side to the lower side of the leakage space.

15. The air conditioner according to claim 9,

further comprising:

an indoor heat exchanger disposed inside the housing case to exchange heat between the air sucked into the suction port and the refrigerant; and

a drain pan supporting a lower portion of the indoor heat exchanger and storing condensed water generated in the indoor heat exchanger,

the discharge guide is formed at the drain pan.