CN112204315B

CN112204315B - Ceiling type indoor unit of air conditioner

Info

Publication number: CN112204315B
Application number: CN201880071848.XA
Authority: CN
Inventors: 具滋允; 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: 2022-05-17
Anticipated expiration: 2038-09-06
Also published as: KR20190027336A; KR102078277B1; EP3680571A4; CN111295554A; EP3680571A1; CN111295553A; CN113739400A; CN111316045B; CN113739400B; EP3680573A4; CN111566413A; KR102201562B1; EP3680572A4; CN111566413B; KR20190027338A; AU2018327937A1; CN113864870A; EP3680573A1; KR20190027345A; AU2018330129A1

Abstract

The ceiling type indoor unit of an air conditioner of the present invention comprises: the shell body is hung on an indoor ceiling, and the bottom surface of the shell body is open; a front body covering a bottom surface of the housing case and having a suction port and a discharge port formed toward a lower side; a blade module detachably coupled to the front body and configured to cover the discharge port; and a suction grill detachably coupled to the front body, configured to cover the suction port, the blade module including: a first module body which is arranged on one side of the discharge port, is positioned below the front body, and is assembled to the front body so as to be separable downward; a second module body which is arranged on the other side of the discharge port, is positioned below the front body, and is assembled to the front body so as to be separable downward; one or more blades, one side and the other side of which are respectively combined with the first module body and the second module body, and relatively rotate the first module body and the second module body; a blade motor provided at one or more of the first module body or the second module body, for providing a driving force to the blade; a first fastening hole disposed in the first module body, facing downward, and formed to penetrate the first module body; a first fastening member fastened to the front body through the first fastening hole; a second fastening hole disposed in the second module body, facing downward, and formed to penetrate the second module body; and a second fastening member fastened to the front body through the second fastening hole, wherein the blade module is separated downward from the front body when the first and second fastening members are separated from the first and second fastening holes.

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.

However, when a failure occurs in the discharge blade of the related art, it is necessary to separate the entire front panel from the casing and repair the same. That is, in the conventional art, even if one of the plurality of discharge blades fails, it is necessary to separate the entire front panel from the housing and then replace or repair the failed discharge blade.

Prior art documents

Patent document

Korean granted invention patent No. 10-0679838B 1

Disclosure of Invention

Problems to be solved

The invention aims to provide a ceiling type indoor unit of a ceiling type air conditioner, which can only separate or replace a blade module under the condition of not separating a front panel.

The invention aims to provide a ceiling type indoor unit of a ceiling type air conditioner, which can separate only one of a plurality of blade modules under the state that a front panel is combined with a shell.

The invention aims to provide a ceiling type indoor unit of a ceiling type air conditioner, which can be used for mounting a blade module for controlling the air discharge direction on a front main body in a disposable way.

The invention aims to provide a ceiling type indoor unit of a ceiling type air conditioner, which can minimize the replacement time and the number of replacement processes when a fault occurs by modularizing a discharge blade.

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 only separate or replace the blade module under the condition of not separating the front panel.

The present invention can separate only one of the plurality of blade modules in a state where the front panel is coupled to the housing case.

The present invention enables all the components constituting the blade module to be mounted to the front body at once.

The present invention can minimize the replacement time and the number of replacement processes when a failure occurs by modularizing the blade modules.

The invention ensures the reliability corresponding to the assembly by combining the blade module in a dual mode by using the fastening component and the module hook.

The suction grill may be positioned at a lower side of the first module body and the second module body.

The suction grill may be positioned under the front body to cover the first and second module bodies, and the first and second module bodies may be hidden by the suction grill when viewed from a bottom surface.

The suction grill may include: a grill main body disposed under the suction port, communicating with the suction port through a plurality of grill holes, and formed in a quadrangular shape; and a grill corner portion formed to extend in a diagonal direction from a corner of the grill main body, the first and second module main bodies being disposed at an upper side of the grill corner portion.

The bottom surfaces of the blades and the bottom surface of the grill body may form a continuous surface.

The suction grill may include: a grill main body disposed under the suction port, communicating with the suction port through a plurality of grill holes, and formed in a quadrangular shape; and first, second, third, and fourth grill corners extending in a diagonal direction from the respective corners of the grill main body, the blade module including: a first vane module disposed outside each edge of the suction grill and between the first grill corner and the second grill corner; a second vane module disposed outside each edge of the suction grill and between the second grill corner and the third grill corner; a third vane module disposed outside each edge of the suction grill and between the third grill corner and the fourth grill corner; and a fourth vane module disposed outside each edge of the suction grill, disposed between the fourth grill corner and the first grill corner, and a first module main body and a second module main body disposed between the first vane module and the second vane module are positioned above the first grill corner and hidden by the first grill corner, and a first module main body and a second module main body disposed between the second vane module and the third vane module are positioned above the second grill corner and hidden by the second grill corner, and a first module main body and a second module main body disposed between the third vane module and the fourth vane module are positioned above the third grill corner and hidden by the third grill corner, and a first module main body and a second module main body disposed between the fourth vane module and the first vane module are positioned above the fourth grill corner, hidden by the fourth grid corner.

One of a permanent magnet or a magnetic force fixing part may be disposed at the front main body, and the other of the magnetic force fixing part or the permanent magnet may be disposed laterally on each of the grill corner parts, the permanent magnet and the magnetic force fixing part being hidden by each of the grill corner parts.

The blade module may further include: and a module hook disposed on the first module body and the second module body and locked with the front body.

The module hooks may be disposed at edges of the first and second module bodies.

The module hooks of the first module main body and the module hooks of the second module main body may be arranged to face each other.

The front body may include: a front frame coupled to the housing case and having the suction port and the discharge port formed therein; a first side cover assembled to an edge of the front frame, positioned below the front frame, exposed to the outside, and disposed outside the first blade module; a second side cover assembled to an edge of the front frame, positioned below the front frame, exposed to the outside, and disposed outside the first blade module; a third side cover assembled to an edge of the front frame, positioned below the front frame, exposed to the outside, and disposed outside the first blade module; a fourth side cover assembled to an edge of the front frame, positioned below the front frame, exposed to the outside, and disposed outside the first blade module; a first side cover assembled to the corner of the front frame, positioned at the lower side of the front frame, positioned between the first side cover and the second side cover, and exposed to the outside; a second corner cover assembled to a corner of the front frame, positioned at a lower side of the front frame, positioned between the second side cover and the third side cover, and exposed to the outside; a third side corner cover assembled to a corner of the front frame, positioned at a lower side of the front frame, positioned between the third side cover and the fourth side cover, and exposed to the outside; and a fourth corner cover assembled to a corner of the front frame, positioned at a lower side of the front frame, positioned between the fourth side cover and the first side cover, and exposed to the outside, wherein the suction grill forms a continuous surface with the first side cover, the second side cover, the third side cover, the fourth side cover, the first corner cover, the second corner cover, the third corner cover, and the fourth corner cover.

The second module body of the first blade module and the first module body of the second blade module may be disposed on an upper side of the first grid edge, the second module body of the second blade module and the first module body of the third blade module may be disposed on an upper side of the second grid edge, the second module body of the third blade module and the first module body of the fourth blade module may be disposed on an upper side of the third grid edge, and the second module body of the fourth blade module and the first module body of the first blade module may be disposed on an upper side of the fourth grid edge.

The first grill corner part may be located at lower sides of the first and second fastening holes formed in the first and second module main bodies, and the first and second fastening holes may be hidden by the first grill corner part.

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, only one of the plurality of blade modules can be separated in a state where the front panel is coupled to the housing case.

Secondly, in the present invention, all the components constituting the blade module can be attached to the front body at one time.

Third, in the present invention, the blade module is modularized, so that the replacement time and the number of replacement processes can be minimized when a failure occurs.

Fourth, in the present invention, since the fastening holes required for the installation of the blade module are hidden by the suction grill, the fastening holes can be prevented from being exposed to the outside.

Fifth, in the present invention, since the blade module is fixed to the front main body by the fastening member and the module hook, reliability corresponding to assembly can be ensured.

Sixth, in the present invention, since the fastening member is attached after the blade module is fixed to the front body by the module hook, the blade module can be easily attached by the worker.

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 bottom view of the front panel in a state where the suction grill of fig. 1 is separated.

FIG. 16 is an enlarged view illustrating the blade module of FIG. 15.

Fig. 17 is a bottom view of the front body showing a state where the blade module in fig. 15 is separated.

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 coupler of FIG. 11. FIG. 14 is a front view of the second blade link illustrated in FIG. 11. Fig. 15 is a bottom view of the front panel in a state where the suction grill of fig. 1 is separated. FIG. 16 is an enlarged view illustrating the blade module of FIG. 15. Fig. 17 is a bottom view of the front body showing a state where the blade module in fig. 15 is separated.

< 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 an overall shape of "□" in a top view or a bottom view, and a part of the section of the indoor heat exchanger 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 intake flow path 103 is an inner side surrounded by "□" of the indoor heat exchanger and the discharge flow path 104 is an outer side of "□" of the indoor heat exchanger in a plan view or a bottom view.

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 later in more detail.

< 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 grills 323 are arranged in a lattice form inside the grill 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 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 arranged 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 part 406 is formed in a convex column shape, and the vane motor 230 is fixed to the vane motor mounting part 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 rotatably coupled to the first blade 210 and disposed in the drive coupling body 245; 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 joint 214 (joint).

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 can rotate 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 discharge steps P1, P2, P3, P4, P5, and 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 are 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 discharge steps P1, P2, P3, P4, P5, and 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; and a joint 214 protruding upward from the first blade body 212, wherein the driving coupling 240 and the first blade coupling 250 are coupled to the joint 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 joint 214 is a mounting structure for joining the drive coupler 240 and the first blade coupler 250. The engaging members 214 are disposed on one side and the other side of the first blade 210, respectively.

The engaging piece 214 is formed to protrude from the upper side of the first blade body 212 to the upper side. The engaging piece 214 is formed along the flow direction of the discharged air and minimizes its resistance with the discharged air. Thus, the engagement members 214 are orthogonal or intersecting with respect to the length direction of the first blade body 212.

The joint 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 engaging member 214 is formed such that the height of the side to which the driving coupling 240 is coupled is high, and the height of the side to which the first blade coupling 250 is coupled is low.

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

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

The first joint portion 216 and the second joint portion 217 are configured to be capable of shaft coupling or hinge coupling, and are deformable to various forms.

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

The first joining portion 216 is located at a more rear side than the second joining portion 217. A first drive coupling shaft 241 is assembled at the first engagement portion 216. The first engaging portion 216 and the first drive coupling shaft 241 are assembled in a relatively rotatable manner. In the present embodiment, the first drive coupling shaft 241 is assembled so as to penetrate the first engaging portion 216.

A 1 st-1 st blade link shaft 251 is assembled at the second joint 217.

The second engagement portion 217 and the 1 st-1 st blade coupling shaft 251 are assembled in a relatively rotatable manner. In the present embodiment, the 1 st-1 st blade link shaft 251 is assembled in such a manner as to penetrate the second joint 217.

The drive coupling 250 and the first blade coupling 250 are disposed between the joint 214 and the coupling mounting portion 404 when viewed from above.

< 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; a joint 224 protruding upward from the second blade body 222 to be coupled to the second blade coupling 260 in a relatively rotatable manner; and a second blade shaft 221 formed at the second blade body 222 and rotatably coupled to the coupling mounting portion 404.

The joint 224 is a structure capable of performing shaft coupling or hinge coupling, and may be deformed into various forms.

When it is necessary to divide the joint 214 of the first blade and the second joint 224 of the second blade, the joint of the first blade is defined as the first joint 214, and the joint of the second blade is defined as the second joint 224.

The second blade 220 may rotate relative to the second joint 224, or may rotate relative to the second blade shaft 221. That is, the second blade 220 can be relatively rotated by the second joint 224 and the second blade shaft 221.

The second joint 224 is located forward of the second blade shaft 221 in a plan view. The second joint member 224 moves along a predetermined trajectory around the second blade shaft 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 joint 224 is a mounting structure for assembly with the second blade link 260. The second joint 224 is disposed on one side and the other side of the second blade body 222.

The second joint 224 is coupled to the second blade link 260 in a relatively rotatable manner.

The second engaging piece 224 is formed to protrude from an upper side surface of the second blade body 222 to an upper side. The second engaging pieces 224 are preferably formed along the flow direction of the discharged air. Thus, the second joint 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 at a position further rearward than the second joint 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, a drive coupling joint 407 and a first blade coupling joint 408 are arranged in this order in front of the second blade joint 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 and third grill edge portions 327-2 and 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, second, third and fourth grill corners 327-1, 327-2, 327-3 and 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.

< separation Process and Assembly Process of blade Module >

In the case where maintenance of one blade module 200 among the four blade modules is required, an operator first moves the suction grill 320 downward.

When the suction grill 320 moves downward, all of the module main bodies 400 shielded by the suction grill 320 are exposed.

Subsequently, the worker separates the fastening member 401 from the fastening hole 403 of the blade module 200 that needs to be repaired. Wherein the blade module 200 does not fall off even if the fastening members 401, 403 are separated, since the module main body 400 is in a state of being coupled to the front main body 410 with the module hooks 405. Since the coupling of the blade module 200 does not all depend on the fastening members 401, there is no risk of safety accidents due to the falling of the blade module 200 even if the fastening members 401 are separated.

After separating the fastening members 401, the operator can separate the entire blade module 200 from the front main body 310 by releasing the locking of the module hooks 405 of the module main body 400 to be separated. Subsequently, the operator separates a cable (not shown) connected to the blade motor 230 from the separated blade module 200, and can separate the entire blade module 200 from the front body 310.

Since the blade module 200 is separated to the lower side of the front body 310, only the blade module 200 requiring maintenance can be separated without separating the front body 310.

At the same time, since the blade module 200 is coupled to the cables in addition to the fastening members 401 and the module hooks 405, the blade module does not fall directly to the ground even if the fastening members 401 and the module hooks 405 are released. That is, after the worker releases the fastening member 401 and the module hook 405, the blade module 200 is kept suspended from the cable even if the blade module 200 is inadvertently dropped.

After separation of the blade modules 200, the installation process will proceed in reverse order.

After the cable and the blade motor 230 are connected, the module hooks 405 are assembled to the front main body 310, and the first and second module

main bodies

410 and 420 are assembled to the front main body 310 by the fastening members 401, respectively. Subsequently, the suction grill 320 is raised to the original position to complete the maintenance.

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 the 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-supplying fan 200: blade module

210: first blade 220: second blade

230: the vane motor 240: drive coupling

250: first blade link 260: second blade coupling

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 indoor unit of a ceiling type air conditioner, wherein,

the method 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 body covering a bottom surface of the housing case and having a suction port and a discharge port formed toward a lower side;

a blade module detachably coupled to a bottom surface of the front body and configured to cover the discharge port; and

a suction grill coupled to the front body to be separable downward, and configured to cover the suction port,

the blade module includes:

a first module body disposed on one side of the discharge port and assembled to be separable from a bottom surface of the front body to a lower side;

a second module body which is arranged on the other side of the discharge port and is assembled in a manner of being separated from the bottom surface of the front body to the lower side;

one or more blades, one side and the other side of which are respectively combined with the first module body and the second module body, and relatively rotate the first module body and the second module body;

a blade motor provided at least one of the first module body and the second module body to provide a driving force to the blade;

a first fastening hole disposed in the first module body so as to face downward and formed to penetrate the first module body;

a first fastening member fastened to the front body through the first fastening hole;

a second fastening hole disposed facing downward in the second module body and formed to penetrate the second module body; and

a second fastening member fastened to the front body through the second fastening hole,

when the first fastening member and the second fastening member are separated from the first fastening hole and the second fastening hole, the blade module is separated from a bottom surface of the front body to a lower side.

2. The indoor unit of a ceiling type air conditioner according to claim 1,

the suction grill is located at a lower side of the first module body and the second module body.

3. The indoor unit of a ceiling type air conditioner according to claim 1,

the suction grill is located under the front body, covers the first module body and the second module body, and is hidden by the suction grill when viewed from the bottom.

4. The indoor unit of a ceiling type air conditioner according to claim 1,

the suction grill includes:

a grill main body disposed under the suction port, communicating with the suction port through a plurality of grill holes, and formed in a quadrangular shape; and

a grill corner portion formed to extend in a diagonal direction from a corner of the grill main body,

the first module body and the second module body are located on the upper side of the grid corner.

5. The indoor unit of a ceiling type air conditioner according to claim 4, wherein,

the bottom surfaces of the blades and the bottom surface of the grill main body form a continuous surface.

6. The indoor unit of a ceiling type air conditioner according to claim 1,

the suction grill includes:

a first, second, third, and fourth grill corners extending in a diagonal direction from each corner of the grill main body,

the blade module includes:

a first vane module disposed outside each edge of the suction grill and between the first grill corner and the second grill corner;

a second vane module disposed outside each edge of the suction grill and between the second grill corner and the third grill corner;

a third vane module disposed outside each edge of the suction grill and between the third grill corner and the fourth grill corner; and

a fourth vane module disposed outside each edge of the suction grill and between the fourth grill corner and the first grill corner,

a first module body and a second module body disposed between the first blade module and the second blade module are located on an upper side of the first grill corner portion and hidden by the first grill corner portion,

a first module body and a second module body disposed between the second blade module and the third blade module are located above the second grill corner portion and hidden by the second grill corner portion,

the first and second module main bodies disposed between the third and fourth blade modules are located above the third grill corner portion and hidden by the third grill corner portion,

the first and second module main bodies disposed between the fourth blade module and the first blade module are located above the fourth grid corner and hidden by the fourth grid corner.

7. The indoor unit of a ceiling type air conditioner according to claim 6, wherein,

one of a permanent magnet and a magnetic fixing portion is disposed on the front body, and the other of the magnetic fixing portion and the permanent magnet is disposed on an upper side of each of the grid corner portions,

the permanent magnet and the magnetic force fixing portion are hidden by the corner portions of the grids.

8. The indoor unit of a ceiling type air conditioner according to claim 1,

the blade module further comprises:

and a module hook disposed on the first module body and the second module body and locked with the front body.

9. The indoor unit of a ceiling type air conditioner according to claim 8, wherein,

the module hooks are arranged at the edges of the first module main body and the second module main body.

10. The indoor unit of a ceiling type air conditioner according to claim 8, wherein,

the module hooks of the first module main body and the module hooks of the second module main body are arranged so as to face each other.

11. The indoor unit of a ceiling type air conditioner according to claim 6, wherein,

the front body includes:

a front frame coupled to the housing case and having the suction port and the discharge port formed therein;

a first side cover assembled to an edge of the front frame, positioned below the front frame, exposed to the outside, and disposed outside the first blade module;

a second side cover assembled to an edge of the front frame, positioned below the front frame, exposed to the outside, and disposed outside the first blade module;

a third side cover assembled to an edge of the front frame, positioned below the front frame, exposed to the outside, and disposed outside the first blade module;

a fourth side cover assembled to an edge of the front frame, positioned below the front frame, exposed to the outside, and disposed outside the first blade module;

a first side cover assembled to a side corner of the front frame, positioned at a lower side of the front frame, positioned between the first side cover and the second side cover, and exposed to the outside;

a second corner cover assembled to a corner of the front frame, positioned at a lower side of the front frame, positioned between the second side cover and the third side cover, and exposed to the outside;

a third side corner cover assembled to a corner of the front frame, positioned at a lower side of the front frame, positioned between the third side cover and the fourth side cover, and exposed to the outside; and

a fourth corner cover assembled to a corner of the front frame, positioned at a lower side of the front frame, positioned between the fourth side cover and the first side cover, and exposed to the outside,

the suction grill forms a continuous surface with the first, second, third, fourth, first, second, third, and fourth corner covers.

12. The indoor unit of a ceiling type air conditioner according to claim 11,

a second module body of the first blade module and a first module body of the second blade module are arranged on an upper side of the first grid corner portion,

a second module body of the second blade module and a first module body of the third blade module are arranged on an upper side of the second grid corner portion,

a second module body of the third blade module and a first module body of the fourth blade module are arranged on an upper side of the third grid corner portion,

the second module body of the fourth blade module and the first module body of the first blade module are arranged on the upper side of the fourth grid corner portion.

13. The indoor unit of a ceiling type air conditioner according to claim 11,

the first grill corner portion is located at lower sides of the first fastening hole and the second fastening hole formed in the first module body and the second module body, and the first fastening hole and the second fastening hole are hidden by the first grill corner portion.