KR20190106026A - Indoor unit of air conditioner - Google Patents

Abstract

The present invention relates to an indoor unit. The indoor unit comprises: a case having a suction port and a discharge port formed on a bottom surface thereof; a suction grill disposed in the case, covering the suction port, and detachable in a vertical direction from the case; an elevator disposed at the case side, connected to the suction grill via a wire, and moving the suction grill in a vertical direction by unwinding or winding the wire; a first length adjusting link disposed at one side of the case and the suction grill, having an upper end assembled at the case side and a lower end assembled at the suction grill, and guiding the vertical movement of the suction grill during operation of the elevator; and a second length adjusting link disposed on the other side of the case and the suction grill, having an upper end assembled on the case side and a lower end assembled on the suction grill, and guiding the vertical movement of the suction grill during operation of the elevator. The present invention can stably raise or lower the suction grill through the length adjusting link connecting the case and the suction grill when the suction grill is moved up and down by the elevator.

Description

Indoor unit of air conditioner

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

In general, an air conditioner is composed of a compressor, a condenser, an evaporator, and an expander, and uses an air conditioning cycle to supply cold or warm air to a building or a room.

Air conditioners are structurally divided into a separate type in which the compressor is arranged outdoors and an integrated type in which the compressor is manufactured integrally.

In the separate type, an indoor heat exchanger is installed in an indoor unit, and an outdoor heat exchanger and a compressor are installed in an outdoor unit to connect two separated devices with refrigerant pipes.

The integrated type is an indoor heat exchanger, outdoor heat exchanger and compressor installed in one case. An integrated air conditioner includes a window type air conditioner installed by directly hanging a device on a window, and a duct type air conditioner connected to an intake duct and a discharge duct and installed outside the room.

The separate air conditioner is generally classified according to the installation type of the indoor unit.

The indoor unit is installed vertically in the indoor space is called a stand type air conditioner, the indoor unit is installed on the wall of the room is called a wall-mounted air conditioner, the indoor unit is installed on the ceiling of the room is called a ceiling type indoor unit.

In addition, there is a system air conditioner that can provide air-conditioned air to a plurality of spaces as one type of a separate air conditioner.

In the case of the system air conditioner, there are a type of air conditioning the room with a plurality of indoor units and a type of supplying air-conditioned air to each space through the duct.

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

In the case of the conventional indoor indoor unit, the suction grill is disposed to face the floor. The suction grill is provided with a filter for filtering foreign substances in the indoor air, the filter can be separated for cleaning.

Conventional ceiling indoor unit has a problem of a safety accident because the user has to stand up to the same structure as the chair to separate the suction grill.

Republic of Korea Patent Publication 10-2008-0110109 A

It is an object of the present invention to provide an indoor unit of an air conditioner in which a suction grill can be lowered to a position of a user.

It is an object of the present invention to provide an indoor unit of an air conditioner in which the entire suction grill is lifted up and down.

It is an object of the present invention to provide an indoor unit of an air conditioner that can minimize shaking when lifting or lowering the suction grill.

An object of the present invention is to provide an indoor unit of an air conditioner that can minimize the shaking of the suction grill even if an external force is applied to the suction grill.

An object of the present invention is to provide an indoor unit of the air conditioner that can prevent the fall of the suction grill.

An object of the present invention is to provide an indoor unit of an air conditioner capable of operating the first length adjusting link and the second length adjusting link by the weight of the suction grill.

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

The present invention can stably raise or lower the suction grill through the length adjustment link connecting the case and the suction grill when the suction grill is moved in the vertical direction by the elevator.

According to the present invention, the upper ends of the first length adjusting link and the second length adjusting link are assembled on the case side, and the lower ends of the first length adjusting link and the second length adjusting link are assembled on the suction grill side. Even if an external force is applied, the shaking of the suction grill can be minimized.

Since the present invention includes a first length adjusting link and a second length adjusting link connected by a plurality of links, the suction grille can be prevented from falling even if the wire is damaged.

The indoor unit is a case in which the suction port and the discharge port is formed on the bottom; A suction grill disposed in the case and covering the suction port and detachable in a vertical direction from the case; An elevator disposed at the case side and connected to the suction grill via a wire and moving the suction grill in a vertical direction by unwinding or winding the wire; A first length adjusting link disposed at one side of the case and the suction grill, and having an upper end assembled at the case side, a lower end assembled at the suction grill, and guiding the vertical movement of the suction grill when the elevator is operated; ; A second length adjusting link disposed on the other side of the case and the suction grill, an upper end of which is assembled on the case side, and a lower end of which is assembled on the suction grill, which guides the vertical movement of the suction grill during operation of the elevator; It includes;

The first length adjusting link includes: at least one first link having an upper end rotatably coupled to the case side and a lower end rotatably coupled to the suction grill side; At least one second link having an upper end rotatably coupled to the case side and a lower end rotatably coupled to the suction grill side; And a hinge assembly rotatably coupling the first link and the second link, wherein the second length adjusting link includes an upper end rotatably coupled to the case side and a lower end rotated with the suction grill side. At least one first link, possibly coupled; At least one second link having an upper end rotatably coupled to the case side and a lower end rotatably coupled to the suction grill side; It may include; a hinge assembly for rotatably coupling the first link and the second link.

Each of the first link and the second link is disposed in plurality, and the hinge assembly comprises: a first hinge assembly rotatably coupling two adjacent first links; The hinge assembly includes a second hinge assembly for rotatably coupling two adjacent second links; It may include; a third hinge assembly for rotatably coupling the first link and the second link.

A first moving guide disposed at the case side and rotatably coupled to an upper end of the first link of the first length adjusting link and guiding an upper end of the first link of the first length adjusting link in a horizontal direction; A second moving guide disposed at the case side and rotatably coupled to an upper end of the second link of the first length adjusting link and guiding an upper end of the second link of the first length adjusting link in a horizontal direction; A third moving guide disposed at the case side, rotatably coupled to a lower end of the first link of the first length adjusting link, and guiding a lower end of the first link of the first length adjusting link in a horizontal direction; A fourth moving guide disposed on the case side, rotatably coupled to a lower end of the second link of the first length adjusting link, and guiding a lower end of the second link of the first length adjusting link in a horizontal direction; Can be.

Each of the first link and the second link is disposed in plurality, and the hinge assembly comprises: a first hinge assembly rotatably coupling two adjacent first links; The hinge assembly includes a second hinge assembly for rotatably coupling two adjacent second links; And a third hinge assembly rotatably coupling the first link and the second link, wherein the first moving guide and the second moving guide are disposed symmetrically with respect to the horizontal direction with respect to the third hinge assembly. The third moving guide and the fourth moving guide may be disposed symmetrically with respect to the horizontal direction.

Each of the first link and the second link is disposed in plurality, and the hinge assembly comprises: a first hinge assembly rotatably coupling two adjacent first links; The hinge assembly includes a second hinge assembly for rotatably coupling two adjacent second links; And a third hinge assembly rotatably coupling the first link and the second link, wherein the first moving guide and the second moving guide are disposed symmetrically with respect to the horizontal direction with respect to the third hinge assembly. The third moving guide and the fourth moving guide may be disposed symmetrically with respect to the horizontal direction.

A first unit fixed to the case and lifting or lowering one side of the suction grill by simultaneously winding or unwinding the 1-1 wire and the 1-2 wire; And a second unit fixed to the case and lifting or lowering the other side of the suction grill by simultaneously winding or unwinding the 2-1 wire and the 2-2 wire. The first unit includes: the first unit; A drum to which one end of the first wire and one end of the 1-2 wire are respectively fixed; And a drum motor for rotating the drum, wherein the second unit comprises: a drum to which one end of the 2-1 wire and one end of the 2-2 wire are respectively fixed; And a drum motor for rotating the drum, wherein one end of the first wire and one end of the second wire are coupled to the drum of the first unit, and the other end and the first wire of the first wire. The other end of the 1-2 wire is respectively coupled to one side of the suction grill, one end of the 2-1 wire and one end of the 2-2 wire is coupled to the drum of the second unit, the second-1 wire The other end of and the other end of the second wire 2-2 may be coupled to the other side of the suction grill, respectively.

The first unit may include a drum to which one end of the 1-1 wire and one end of the 1-2 wire are respectively fixed; A drum motor for rotating the drum; A 1-1 roller box arranged through the 1-1 wire and aligning the position of the 1-1 wire when the 1-1 wire is wound or unwound; A 1-2 roller box which is disposed through the 1-2 wire and aligns the position of the 1-2 wire when the 1-2 wire is wound or unwound; Rotation amount sensing device for sensing the rotation amount of the drum; wherein the second unit, the one end of the 2-1 wire and the second end of the 2-2 wire is fixed; A drum motor for rotating the drum; A 2-1 roller box arranged through the 2-1 wire and aligning the position of the 2-1 wire when the 2-1 wire is wound or unwound; A 2-2 roller box arranged to penetrate the 2-2 wire and aligning the position of the 2-2 wire when the 2-2 wire is wound or unwound; It may include; a rotation amount detecting device for detecting the rotation amount of the drum.

The first unit further includes a unit case in which the drum and the drum motor are installed, the unit case of the first unit is fixed to the case, and the second unit includes a unit case in which the drum and the drum motor are installed. The unit case of the second unit is further fixed to the case, and the unit case of the first unit comprises: a first hole through which the first-first wire passes; And a second hole through which the 1-2 wire passes, wherein the unit case of the second unit includes: a first hole through which the 2-1 wire passes; And a second hole through which the second-2 wire penetrates, wherein an interval between the first hole and the second hole of the first unit is equal to an interval between the first hole and the second hole of the second unit, The first and second holes of the first unit may be disposed to face the first and second holes of the second unit, respectively, based on the suction grill.

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

First, the present invention has the advantage that the elevator can automatically lower the suction grill to the height of the user, and can automatically raise the lowered suction grill to the original position.

Second, the present invention has the advantage that the suction grill can be raised or lowered stably through the length adjustment link connecting the case and the suction grill when the suction grill is moved in the vertical direction by the elevator.

Third, the present invention is because the upper end of the first length adjustment link and the second length adjustment link is assembled on the case side, the lower end of the first length adjustment link and the second length adjustment link is assembled on the suction grill side, Even if an external force is applied to the grill, there is an advantage of minimizing the shaking of the suction grill.

Fourth, since the present invention includes a first length adjusting link and a second length adjusting link connected by a plurality of links, the suction grille can be prevented from falling even if the wire is damaged.

Fifth, the present invention because the upper end of the first length adjustment link and the second length adjustment link can be moved in the horizontal direction along the moving guide formed in the case, the height of the first length adjustment link and the second length adjustment link There is no need to provide a separate driving force for change.

Sixth, since the present invention can relatively rotate the first length adjusting link and the second length adjusting link through the rotating assembly, the length of the first length adjusting link and the second length adjusting link is extended by the weight of the suction grill. There is an advantage that can be reduced.

1 is a side cross-sectional view of a ceiling indoor unit according to a first embodiment of the present invention.
2 is a perspective view of the indoor indoor unit according to the first embodiment of the present invention.
3 is a working example of the indoor indoor unit according to the first embodiment of the present invention.
4 is an exploded perspective view of the elevator separated from FIG.
FIG. 5 is a bottom perspective view of the elevator of FIG. 3.
FIG. 6 is a bottom view of the front panel and the elevator of FIG. 3.
7 is a perspective view showing the internal structure of the elevator of FIG.
8 is a plan view of FIG. 7.
9 is an operation example of the elevator according to the first embodiment of the present invention.
10 is a front view showing a part of the length adjustment link shown in FIG.
11 is a perspective view showing a coupling structure of the length adjustment link and the case shown in FIG.
12 is a perspective view showing a coupling structure of the length adjustment link and the suction grill shown in FIG.
13 is an exploded perspective view showing a coupling structure of the length adjustment link shown in FIG.
14 is an operation example 1 of the length adjustment link according to the first embodiment of the present invention.
15 is an operation example 2 of the length adjustment link according to the first embodiment of the present invention.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a side cross-sectional view of a ceiling indoor unit according to a first embodiment of the present invention.

<Configuration of the room>

The indoor unit of the air conditioner according to the present embodiment has a case 100 having an inlet 101 and an outlet 102, an indoor heat exchanger 130 disposed inside the case 100, and the case 100. It is disposed inside, and includes an indoor blowing fan 140 for flowing air to the suction port 101 and the discharge port (102).

<Configuration of Case>

In this embodiment, the case 100 is fixed to the ceiling of the room, the case housing 110 is formed by opening the lower side, and covers the opened surface of the case housing 110 and exposed to the room, the suction port A cover panel 300 having the 101 and the discharge port 102 formed thereon, and a suction grill 400 disposed on the cover panel 300 and covering the suction port 101.

The case 100 may be implemented in various ways according to the manufacturing form, the configuration of the case 100 does not limit the spirit of the present invention.

The suction port 101 is disposed in the center of the cover panel 300, and the discharge port 102 is disposed around the suction port 101. The number of the inlets 101 or the number of the outlets 102 is irrelevant to the spirit of the present invention. In the present embodiment, one suction port 101 is formed, and four discharge ports 102 are disposed.

In the present embodiment, the suction port 101 is formed in a rectangular shape when viewed from the bottom, and is located in the center of the cover panel 300. Four discharge ports 102 are disposed at predetermined intervals from each edge of the suction port 101.

The suction grille 400 covering the suction port 101 is disposed on the cover panel 300. The suction grill 400 is detachably installed in the cover panel 300 by an elevator 500 to be described later.

The prefilter 410 is disposed above the suction grill 400, and the prefilter 124 filters the air sucked into the case 100.

The discharge port 102 is formed in the form of a long slit, the discharge vane 200 for opening and closing the discharge port 102 is disposed.

<Configuration of the indoor heat exchanger>

The indoor heat exchanger 130 is disposed between the intake port 101 and the discharge port 102, and the indoor heat exchanger 130 partitions the inside of the case 100. The indoor heat exchanger 130 is disposed vertically in this embodiment.

The indoor heat exchanger 130 is disposed to vertically enter the air discharged from the indoor blower fan 140.

A drain pan 132 is installed in the case 100, and the indoor heat exchanger 130 is mounted on the drain pan 132. The condensed water generated in the indoor heat exchanger 130 may be stored after flowing to the drain pan 132. The drain pan 132 is disposed a drain pump (not shown) for discharging the condensed water to the outside.

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

<Configuration of Indoor Blower Fan>

The indoor blowing fan 140 is located inside the case 100 and is disposed above the suction port 101. The indoor blower fan 140 uses a centrifugal blower that sucks air to the center and discharges air in the circumferential direction.

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

The bell mouse 142 is disposed above the suction grill 400, and guides air passing through the suction grill 400 to the fan 144.

The fan motor 146 rotates the fan 144.

<Europe composition>

A space for the indoor blower fan 140 is defined as the suction flow path 103 with respect to the indoor heat exchanger 130, and an outer space (the indoor heat exchanger 130 and the case housing 110) with respect to the indoor heat exchanger 130. ) Is defined as the discharge passage 104.

The suction channel 103 is in communication with the suction port 101, and the discharge channel 104 is in communication with the discharge port 103.

Air flows from the lower side of the suction passage 103 to the upper side and from the upper side of the discharge passage 104 to the lower side.

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

The suction port 101 and the discharge port 102 are disposed to face the same direction. In this embodiment, the suction port 101 and the discharge port 102 are disposed to face the floor of the room.

When the cover panel 300 is curved, the discharge hole 102 may be formed to have a slight side slope, but the discharge hole 102 connected to the discharge passage 104 is formed to face downward.

Discharge vanes 200 are disposed to control the direction of air discharged through the discharge ports 102.

2 is a perspective view of a ceiling indoor unit according to a first embodiment of the present invention, Figure 3 is an operation view of the ceiling indoor unit according to a first embodiment of the present invention, Figure 4 is an elevator separated from Figure 3 Figure 5 is an exploded perspective view, Figure 5 is a bottom perspective view of the elevator of Figure 3, Figure 6 is a bottom view showing the front panel and the elevator of Figure 3, Figure 7 is a perspective view showing the internal structure of the elevator of Figure 3, FIG. 8 is a plan view of FIG. 7 and FIG. 9 is a view illustrating operation of the elevator according to the first embodiment of the present invention.

<Configuration of Cover Panel>

The cover panel 300 is a structure which is located below the case housing 110 and exposed to the user. The cover panel 300 is coupled to the case housing 110. The cover panel 300 closes a part of the bottom surface of the case housing 110.

The suction grill 400 is positioned at the inner center of the cover panel 300. The suction grille 400 covers the suction port 101.

When the suction grill 400 is coupled to the suction port 101, the cover panel 300 and the suction grill 400 cover both the lower side of the case housing 110.

Inlet 101 and outlet 102 are respectively formed in the cover panel 300.

The suction grill 400 is mounted on the cover panel 300 to cover the suction port 101. The suction grill 400 may be lifted up and down by the elevator (500).

In the present embodiment, the suction port 101 is formed in a rectangular shape. Unlike the present embodiment, the suction port 101 may be formed in a circular shape. The shape and number of the suction ports 101 are not particularly limited in the present invention.

The discharge port 102 is located outward from the edge of the suction port 101. The shape and number of the discharge holes 102 are not particularly limited in the present invention.

The cover panel 300 has an inner cover panel 310 having the suction port 101 formed therein, and an outer cover panel 320 forming the discharge hole 102 at a predetermined interval from the inner cover panel 310. ) And a connection structure 330 connecting the inner cover panel 310 and the outer cover panel 320 to each other.

The discharge vane 200 is coupled between the inner cover panel 310 and the outer cover panel 320.

<Configuration of Elevator>

The elevator 500 may raise and lower the suction grill 400. A user may raise and lower the elevator 500 by inputting an operation signal to a control unit.

The elevator 500 is controlled by the control unit. The elevator 500 supports the suction grill 400 at four points. The elevator 500 supports the suction grille 400 through four wires 501, 502, 503 and 504, and lifts or lowers the suction grille 400 by winding or unwinding the wires. .

The elevator 500 is operated to simultaneously wind or unwind four wires 511, 512, 521, and 522, thereby raising or lowering the suction grill 400 in a horizontal state.

The elevator 500 is composed of a first unit 510 and a second unit 520.

The first unit 510 may simultaneously wind or unwind the first-first wire 511 and the first-second wire 512. The second unit 520 may wind or unwind the 2-1 wire 521 and the 2-2 wire 522 at the same time.

One end of the first-first wire 511 and one end of the first-second wire 512 are coupled to the first unit 510, and the other end and the second-first of the first-1 wire 511. The other end of the wire 512 is coupled to one side of the suction grill 400.

One end of the 2-1 wire 521 and one end of the 2-2 wire 522 are coupled to the second unit 520, and the other end and the second-2-2 of the 2-1 wire 521. The other end of the wire 522 is coupled to the other side of the suction grill.

When the first-first wire 511 and the second-second wire 512 are disposed on the left side, the second-first wire 521 and the second-second wire 522 are disposed on the right side. On the contrary, when the first-first wire 511 and the second-second wire 512 are disposed at the front side, the second-first wire 521 and the second-second wire 522 are disposed at the rear side. Is placed.

One end of the first-first wire 511 and one end of the first-second wire 512 are positioned on the left side of the suction grill 40 and disposed in the front-rear direction. One end of the 2-1 wire 521 and one end of the 2-2 wire 522 are positioned on the right side of the suction grill 400 and are disposed in the front-rear direction.

Unlike the present exemplary embodiment, one end of the first wire 1-511 and one end of the wire 1-2 of the second wire 512 are disposed at the left edge of the suction grill 400, and the second wire 521 of the second wire 521 is disposed. One end and one end of the second-2 wire 522 may be disposed at the right edge of the suction grill 400.

The first unit 510 and the second unit 520 are arranged symmetrically with each other. When the first unit 510 is disposed on the left side of the case 100, the second unit 520 is disposed on the right side of the cage 100. Similarly, when the first unit 510 is disposed at the front side of the case 100, the second unit 520 is disposed at the rear side of the case 100.

In the present embodiment, the first unit 510 is disposed on the left side of the case 100, and the second unit 520 is disposed on the right side of the case 100.

The elevator 500 provides a structure that allows the suction grill 400 to be raised or lowered in a horizontal state by simultaneously winding or releasing four wires at the same time.

Since the structures of the first unit 510 and the second unit 520 are the same, the structure of the first unit 510 will be described as an example.

<Configuration of First Unit>

The first unit 510 includes a drum 530 to which one end of the 1-1 wire 511 and one end of the 1-2 wire 512 are respectively fixed, and a drum motor 540 to rotate the drum 530. And a 1-1 for aligning the position of the 1-1 wire 511 when the 1-1 wire 511 is disposed through and the 1-1 wire 511 is wound or unwound. The roller box 550 and the 1-2 wire 512 are disposed to penetrate, and when the 1-2 wire 512 is wound or unwound, the position of the 1-2 wire 512 is aligned. It includes a first 1-2 roller box 560, and a rotation amount detecting device 600 for detecting the rotation amount of the drum 530.

The drum 530, the drum motor 540, the first-first roller box 550, and the first-second roller box 560 constituting the first unit 510 are the cover panel 300 or the cabinet housing. Can be installed directly to 110.

In this embodiment, the drum 530, the drum motor 540, the first-first roller box 550, and the first-second roller box 560 constituting the first unit 510 are easily replaced and repaired. ) Is installed in the unit case 590. The unit case 590 may be fixed to the cover panel 300 or the cabinet housing 110.

In this embodiment, the unit case 590 is installed on the cover panel 300. In particular, the unit case 590 is fastened and fixed to the inner cover panel 310.

The drum 530 is formed in a cylindrical shape, a drum body 535 to which one end of the first-first wire 511 and the first-second wire 512 are fixed, respectively, and a radial direction of the drum body 535. The partition 533 is disposed to protrude outward and partitions the first zone 531 to which the first-first wire 511 is wound and the second zone 532 to which the first-two wire 512 is wound. And a first-first barrier 534 disposed in the drum body 535 and preventing the first-first wire 511 wound in the first zone 531 from being separated out of the drum body 535. And a second barrier 536 disposed in the drum body 535 to prevent the first and second wires 512 wound in the second zone 532 from escaping out of the drum body 535. ).

The drum body 535 is formed in a cylindrical shape. Unlike the present embodiment, the drum body 535 may be formed in various forms. Grooves may be formed on the outer circumferential surface of the drum body 535 to facilitate alignment during winding of the wire. The groove may be formed in a spiral shape along the outer circumferential surface of the drum body 535.

The partition 533 is disposed midway with respect to the longitudinal direction of the drum body 535. The partition 533 is formed to protrude radially outward of the drum body 535. In the present exemplary embodiment, the partition 533 is formed in a ring shape, and the center of the partition 533 is disposed on the same axis line as the axis center C. The ring shape is disposed to protrude radially along the outer circumferential surface of the drum body 535.

The axial center C of the drum body 535 and the first-first wire 511 or the first-second wire 512 intersect with each other.

The partition 533 divides the outer circumferential surface of the drum body 535 into a first zone 531 and a second zone 532.

The first-first wire 511 is located in the first zone 531 and is wound or unwound in the first zone 531. The 1-2 wire 512 is located in the second zone 532 and wound or unwound in the second zone 532.

The partition 533 prevents wires from winding over out of the area.

The first-first barrier 534 prevents the first-first wire 511 wound around the first zone 531 from leaving the drum body 535. The 1-2 barrier 536 prevents the 1-2 wire 512 wound around the second zone 532 from leaving the drum body 535.

The first-first barrier 534 is disposed to protrude radially outward of the drum body 535. The first and second barriers 536 protrude radially outwardly of the drum body 535.

In the present embodiment, the first-first barrier 534 and the second-first barrier 536 are formed in a ring shape formed along the outer circumferential surface of the drum body 535. The ring shapes of the first-first barrier 534 and the first-second barrier 536 are radially protruded along the outer circumferential surface of the drum body 535.

One end of the first-first wire 511 is fixed to the first zone 531, and one end of the one-to-one wire 512 is fixed to the second zone 532.

One end of the first-first wire 511 may be fixed to any one of the drum body 535, the partition 533, or the first-first barrier 534 forming the first zone 531.

In this embodiment, one end of the first-first wire 511 is fixed to the outer circumferential surface of the drum body 535 of the first zone 531. In this embodiment, one end of the second wire 512 is fixed to the outer peripheral surface of the drum body 535 of the second zone 532.

In order to detect the amount of rotation of the drum 530, some components of the amount of rotation detecting device 600 may be disposed on the drum 530. In order to detect the amount of rotation of the drum 530, a rotation sensing factor 601 is disposed. In this embodiment, the rotation detection factors 601 are arranged at equal intervals in the circumferential direction with respect to the axis center C of the drum 530. The rotation detection factor 601 may be disposed on at least one of the first-first barrier 534 or the first-second barrier 536.

The drum motor 540 has a motor shaft 541 is assembled to the drum 530. The shaft center C of the motor shaft 541 and the drum 530 coincide with each other.

Unlike the present embodiment, gears may be arranged to provide the drum 530 with the rotational force of the drum motor 540. Through the combination of the gears it is possible to more precisely control the rotation amount and rotation speed of the drum 530.

Arrangement directions of the axial center C, the first-first wire 511, and the first-second wire 512 intersect with each other. In this embodiment, the drum motor 540 is a step motor is used.

The first-first roller box 550 assists the first-first wire 511 to be wound in alignment with the first zone 531 of the drum 530. When the first-first wire 511 is not wound while forming a uniform layer on an outer circumferential surface of the drum 530, a length difference is formed with the first-second wire 512 by the thickness of the wire.

The 1-2 roller box 560 helps to wind the 1-2 wire 512 aligned with the second zone 532 of the drum 530.

The first-first roller box 550 and the first-second roller box 560 are arranged symmetrically with respect to the partition 533.

Since the 1-1 roller box 550 and the 1-2 roller box 560 have the same configuration, the 1-1 roller box 550 will be described as an example.

The first-first roller box 550 is a box 555 fixed to the unit case 590, disposed inside the box 555, and in contact with the 1-1 wire 511. The first roller 551 and the fourth roller 554, which are rotated by friction during movement of the -1 wire 511, are disposed inside the box 555 and are in contact with the first-1 wire 511. And the second roller 552 and the third roller 553 which are rotated by friction when the 1-1 wire 511 moves, and which are relatively movable in the axial direction by the tension of the 1-1 wire 511. And a roller elastic member 556 elastically supporting at least one of the second roller 552 and the third roller 553.

The second roller 552 and the third roller 553 are disposed between the first roller 551 and the fourth roller 554.

The first roller 551, the second roller 552, the third roller 553 and the fourth roller 554 are assembled to the respective roller shafts 551a, 552a, 553a, 554a, each The roller shafts 551a, 552a, 553a, and 554a may be rotated about the roller shafts 551a, 552a, 553a, and 554a.

At least one of the first roller 551, the second roller 552, the third roller 553, and the fourth roller 554 may be rotated in a fixed state, and the other may be rotated while being moved along the roller shaft. have.

In this embodiment, the first roller 551 is a fixed roller that does not move along the roller shaft, and the second roller 552, the third roller 553, and the fourth roller 554 are movable along the roller shaft. It is a roller.

In the present embodiment, the first roller 551 is rotated in place about the roller shaft 551a while being coupled to the roller shaft 551a.

In the present embodiment, the second roller 552, the third roller 553, and the fourth roller 554 are not only rotatable in a state coupled to the roller shafts 552a, 553a, 554a, but also in the roller axial direction. When a force is applied, it can be moved relative to the roller axis.

Due to the relative movement of the second roller 552, the third roller 553, and the fourth roller 554, the 1-1 wire 511 is aligned and wound on the drum 530.

The wire guard 551b is spaced apart from the first roller 551 by a predetermined distance. The first-first wire 511 is disposed between the wire guard 551b and the first roller 551. The wire guard 551b prevents the wire wound around the roller from being separated from the roller.

Wire guards 552b, 553b, and 554b are disposed in the second roller 552, the third roller 553, and the fourth roller 554, respectively.

It is preferable that a roller for directly providing the first-first wire 511 to the suction grill 400 is fixed to the box 555. When the roller providing the wire to the suction grill 400 is moved in the axial direction, it may be shaken during the lifting or lowering process.

Thus, in the present embodiment, the first roller 551 is rotated in place in the box 555, and the second roller 552, the third roller 553, and the fourth roller 554 are disposed to move along the roller axis. do.

In the present embodiment, the roller elastic member 556 uses a coil spring. The roller elastic member 556 provides an elastic force in the vertical direction. In this embodiment, the roller elastic member 556 elastically supports the roller shaft 554b of the fourth roller 554.

The roller elastic member 556 is preferably disposed on a roller disposed inside the plurality of rollers. The roller elastic member 556 may be disposed on either the second roller 552 or the third roller 553, and in this embodiment, is disposed on the third roller 553.

The roller elastic member 556 provides an elastic force to the roller to the wire guard side. In this embodiment, the roller elastic member 556 presses the third roller 553 upward through an elastic force. The roller elastic member 556 maintains the first-first wire 511 in a taut state.

When the first-first wire 511 is wound around the drum 530, when the second row is wound, the roller elastic member 556 is compressed by the thickness of the wire, and the third roller 533 is stacked of the wires. It is moved downward by step.

A rail 557 is formed in the box 555 to move the roller shaft 553a of the third roller 553 in the vertical direction so that the third roller 553 is movable in the vertical direction. . The third roller 553 may be moved up and down along the rail 557.

In the present embodiment, since four rollers are used, the roller elastic member 556 is installed on the third roller. However, when the three rollers are used, the roller elastic member 556 may be disposed on the second roller.

The first roller 551, the second roller 552, the third roller 553, and the fourth roller 554 are arranged in a zigzag shape in the vertical direction.

One end of the first-first wire 551 is fixed to the drum 530, and the other end is fixed to the suction grill 400.

In the present embodiment, the first-first wire 551 is extended to the lower side while being supported by the upper outer circumferential surface of the first roller 551 and is coupled to the suction grill 400. One end of the first-first wire 551 is fixed to the drum 530 in a state of being supported by a lower outer circumferential surface of the fourth roller 443.

The first roller box 560 has the same configuration as the first roller box 550.

Thus, the first roller box 560 is disposed in the box 565 fixed to the unit case 590, disposed inside the box 565, and in contact with the 1-2 wire 512. A first roller 561 and a fourth roller 564 rotated by friction during movement of the second wire 512, disposed inside the box 565, and in contact with the 1-2 wire 512. And a second roller 562 and a third roller 563 which are rotated by friction when the 1-2 wire 512 is moved, and which are relatively movable in the axial direction by the tension of the 1-2 wire 512. And a roller elastic member 566 for elastically supporting at least one of the second roller 562 and the third roller 563. The third roller 563 may be moved up and down along the rail 567.

The first roller 561, the second roller 562, the third roller 563 and the fourth roller 564 are assembled to the respective roller shafts 561a, 562a, 563a and 564a, respectively. The roller shaft 561a, 562a, 563a, 564a can be rotated about the center.

The second roller box 560 is each wire guard 561b spaced apart from the first roller 561, the second roller 562, the third roller 563, and the fourth roller 564 by a predetermined distance ( 562b), 563b and 564b are disposed.

The first roller box 550 and the second roller box 560 are arranged symmetrically with respect to the drum 530. In particular, the first roller box 550 and the second roller box 560 are arranged symmetrically with respect to the shaft center (C).

The first rollers 551 and 561 are disposed at the farthest side with respect to the shaft center C, and the fourth rollers 554 and 564 are disposed at the nearest side.

The first-first wire 511 and the second-first wire 512 are both extended to the lower side while being supported by the upper outer peripheral surface of the first rollers 551 and 561.

In this embodiment, one end of the first-first wire 511 and one end of the second-first wire 512 are located at opposite sides with respect to the axial center of the drum 530. As the drum 530 rotates, the first-first wire 511 and the first-second wire 512 are wound or unwound on the drum body 535 in the same direction.

The unit case 590 is formed in a box shape, and a first hole 591 and a second hole 592 are formed on a lower side thereof.

The other end of the 1-1 wire 511 is coupled to the suction grill 400 through the 1 hole 591. The other end of the second wire 512 passes through the second hole 592 and is coupled to the suction grill 400.

The first roller 551 of the first roller box 550 is disposed above the first hole 591. The first roller 561 of the second roller box 560 is disposed above the second hole 592. The first rollers 551 and 561 are not moved, but are rotated in place to suppress the movement of the wires 511 and 512, thereby minimizing the shaking of the suction grill 400.

<Configuration of rotation detection device>

The rotation sensing device 600 is for sensing the rotation amount of the drum 530. The rotation sensing device 600 should detect a precise amount of rotation than the number of rotations of the drum 530.

In the present exemplary embodiment, the first-first wire 511 and the first-second wire 512 of the first unit 510, the second-first wire 521 and the second-2-2 of the second unit 520. Since the wire 522 must be wound or unwound at the same time, the amount of rotation of the drum 530 must be accurately sensed.

Otherwise, a problem occurs in which the suction grill 400 is inclined due to more or less looseness of either wire.

Since the rotation sensing apparatuses 600 of the first unit 510 and the second unit 520 have the same configuration, the rotation sensing apparatus 600 disposed in the first unit 510 will be described as an example.

The rotation sensing device 600 is disposed on the drum 530, and is spaced apart from the rotation sensing factor 601, which is rotated together with the rotation of the drum 530, and the rotation sensing factor 601. The sensor 602 detects the amount of rotation of the rotation detection factor 601, and a printed circuit board 603 on which the sensor 602 is disposed.

The rotation detection factor 601 is disposed at a position where the drum 530 is rotated together when the drum 530 is rotated. The rotation detection factor 601 may be disposed on at least one of the first-first barrier 534 or the first-second barrier 536.

In the present embodiment, a plurality of rotation detection factors 601 are disposed, and the plurality of rotation detection factors 601 are disposed at equal intervals with respect to the circumferential direction based on the axis center C of the drum 530.

In this embodiment, the rotation detection factor 601 is disposed on the first-first barrier 534.

The rotation detection factor 601 is formed in a sawtooth shape, protruding radially outward with respect to the axial center C of the drum 530.

The sensor 602 detects the rotation detection factor 601. In this embodiment, the sensor 602 is an infrared sensor. The sensor 602 detects a signal generated by the rotation sensing factor 601 when the drum 530 rotates. For example, the sensor 602 generates infrared rays and receives the generated infrared rays. do. When the sensor 602 rotates the drum 530, the controller determines the rotation angle, the number of rotations, and the rotation speed of the drum 530 through the change of infrared rays blocked by the rotation detection factor 601. Can be.

The sensor installation unit 604 protrudes from the printed circuit board 603 to effectively detect the rotation detection factor 601.

The printed circuit board 603 is disposed in parallel with the axis C. The printed circuit board 603 is installed in any one of the drum motor 540, the unit case 590, or a roller box.

In this embodiment, the printed circuit board 603 is installed in the drum motor 540 and disposed in parallel with the motor shaft of the drum motor 540.

The sensor installation unit 604 is disposed to protrude toward the drum 530 from the printed circuit board 603. In this embodiment, the sensor mounting unit 604 is disposed perpendicular to the printed circuit board 603.

The sensor 602 is installed in the sensor installation unit 604. The sensor 602 includes a light emitting unit for generating an infrared signal and a light receiving unit for receiving an infrared signal generated by the light emitting unit. Since the operation mechanism of the sensor 602 is a general technique to those skilled in the art, detailed description thereof will be omitted.

However, the structure of the sensor installation unit 604 and the printed circuit board 603 for effectively recognizing the rotation detection factor 601 is characterized.

The sensor installation unit 604 is formed in a "c" shape when viewed from the top view.

The sensor installation unit 604 is formed with a slot 605 so that the rotation detection factor 601 can pass. When the drum 530 rotates, the rotation detection factor 601 passes through the slot 605, and the sensor 602 detects the rotation detection factor 601 passing through the slot 605.

The slot 605 is orthogonal to the axis center of the drum 530. The slot 605 is located on the plane of rotation of the rotation detection factor 601.

In this embodiment, since the rotation detection factor 601 is disposed on the first-first barrier 534, at least a part of the slot 605 and the first-first barrier 534 are located on the same side. do.

The slot 605 is disposed in parallel with the first-second barrier 536 and the partition 533.

The sensor installation unit 604 may simply be a structure in which only the sensor 602 is installed. In contrast, the sensor installation unit 604 may be configured as a printed circuit board that can provide power to the sensor 602. Thus, the printed circuit board 603 and the sensor installation unit 604 may be electrically connected.

Unlike the present embodiment, the rotation amount sensing device can be configured through various types of sensors. For example, the rotation amount sensing device may be configured by using a magnetic sensor for disposing a permanent magnet at the sawtooth position and detecting a magnetic force of the permanent magnet.

On the other hand, since the second unit 520 is configured in the same way as the first unit 510, detailed description thereof will be omitted.

<Configuration of the length control link>

When the suction grill 400 is raised or lowered by the elevator 500, the length adjustment link 700 may be further disposed to suppress the shaking of the suction grill 400 and guide the vertical movement direction. have.

If there is no external force, only the wires 511, 512, 521, and 522 may raise or lower the suction grill 400 stably. However, when the suction grill 400 is applied to an unexpected external force during the lifting or lowering of the suction grill 400, the suction grill 400 may be shaken to cause a safety accident.

The length adjustment link 700 is provided to suppress unexpected safety accidents.

The length adjustment link 700 has an upper end coupled to the case 100 and a lower end coupled to the suction grill 400.

In the present embodiment, the length adjustment link 700 includes a first length adjustment link 710 and a second length adjustment link 720.

The first length adjustment link 710 is disposed on the left side, the second length adjustment link 720 is disposed on the right side. The structure of the first length control link 710 and the second length control link 720 is the same.

The first length adjusting link 710 and the second length adjusting link 720 guide the vertical movement of the suction grill 400, and the driving force for the vertical movement of the suction grill 400 is the above-mentioned elevator 500 Is provided).

In this embodiment, the structure of the length adjustment link will be described by taking the second length adjustment link 720 shown in FIGS. 10 to 15 as an example.

The length adjusting link includes a first link assembly 730 and a second link assembly 740. The first link assembly 730 and the second link assembly 740 are rotatably coupled to each other.

The first link assembly 730 includes a plurality of links and a hinge assembly 750 for rotatably coupling two adjacent links. The first link assembly 730 includes a 1-1 link 731, a 1-2 link 732, a 1-3 link 733, and a 1-n link. There is no particular limitation on the number.

At least one link is arranged in the first link assembly 730. The links of the first link assembly 730 are defined as a first link.

One end of the first link 731 is rotatably coupled to the case 100, and the other end is rotatable with one end of the second link 732 through the hinge assembly 750. To be combined.

One end of the 1-2 link 732 is rotatably assembled with the 1-1 link 731 through the hinge assembly 750, the other end is the 1-3 through the hinge assembly 750 Is rotatably coupled to one end of the link 733.

As such, each of the plurality of links is assembled in order through the hinge assembly 750. That is, the hinge assembly 750 is configured to rotatably assemble two adjacent links. For convenience of description, the hinge assembly 750 connecting the links of the first link assembly 730 is defined as a first hinge assembly 751.

The second link assembly 740 has the same configuration as the first link assembly 730, and includes a plurality of links and a hinge assembly 750 for rotatably coupling two adjacent links. The second link assembly 740 includes a 2-1 link 741, a 2-2 link 742, a 2-3 link 743, and a 2-n link. There is no particular limitation on the number.

At least one link is disposed in the second link assembly 740. The links of the second link assembly 740 are defined as second links.

One end of the 2-1 link 741 is rotatably coupled to the case 100 and the other end is rotatable with one end of the 2-2 link 742 through the hinge assembly 750. To be combined.

One end of the 2-2 link 742 is rotatably assembled with the 2-1 link 741 through the hinge assembly 750, and the other end thereof is the second 2-3 through the hinge assembly 750. Is rotatably coupled with one end of the link 743.

As such, each of the plurality of links is assembled in order through the hinge assembly 750. For convenience of description, the hinge assembly 750 connecting the links of the second link assembly 740 is defined as a second hinge assembly 752.

Meanwhile, the links of the first link assembly 730 and the links of the second link assembly 740 are arranged to cross each other in order. For example, the 1-1 link 731 and the 2-1 link 741 cross each other, the 1-2 link 732 and the 2-2 link 742 cross each other, and the remaining links. Also intersect each other.

The rings of the first link assembly 730 and the links of the second link assembly 740 correspond to each other 1: 1, and are rotatably assembled 1: 1.

For convenience of description, the hinge assembly 750 connecting the links of the first link assembly 730 and the links of the second link assembly 740 is defined as a third hinge assembly 753.

The links of the first link assembly 730 and the links of the second link assembly 740 cross each other in an X shape.

The links of the first link assembly 730 and the links of the second link assembly 740 are coupled through a first hinge assembly 751, a second hinge assembly 752, and a third hinge assembly 753. Can be rotated relative to each other. The links of the first link assembly 730 and the links of the second link assembly 740 may be moved in the vertical direction while being rotated relative to each other.

As the links of the first link assembly 730 and the links of the second link assembly 740 are rotated around the third hinge assembly 153, the entire vertical length of the second length adjusting link 720 may be extended. Can be.

The first hinge assembly 151 and the second hinge when the link of the first link assembly 730 and the link of the second link assembly 740 rotate relative to each other about the third hinge assembly 153. The spacing of the assemblies 152 is changed.

When the vertical length of the second length adjustment link 720 is extended, the interval between the first hinge assembly 151 and the second hinge assembly 152 is narrowed, the upper and lower sides of the second length adjustment link 720 When the length is reduced, the distance between the first hinge assembly 151 and the second hinge assembly 152 is widened.

Since the first hinge assembly 151 and the second hinge assembly 152 disposed in the middle are not restrained, they are irrelevant to the change in spacing. However, the upper end of the length adjustment link assembled on the case 100 and the lower end of the length adjustment link assembled on the suction grill 400 are changed in the interval between the first hinge assembly 151 and the second hinge assembly 152. A structure is needed to counteract this.

In the present embodiment, the moving guide is disposed in the case 100 so that the upper end of the length adjustment links 710 and 720 can be moved left and right.

In the present embodiment, in the case of the second length adjustment link 720, the first end of the first link 731 is assembled, and the first moving guide 701 and the second-1 slide in the horizontal direction. The upper end of the link 741 is assembled, and a second moving guide 702 which is moved in the horizontal direction is disposed.

Although not shown, the first moving guide and the second moving guide are also disposed in the first length adjusting link 710.

In this embodiment, the moving guides 701 and 702 are formed in the form of slots penetrating the structure. Unlike the present embodiment, it may be formed in the form of a rail.

In this embodiment, the first moving guide 701 and the second moving guide 702 are disposed on the bell mouse 142. Unlike the present embodiment, the first moving guide 701 and the second moving guide 702 may be disposed in the case 100.

The first moving guide 701 and the second moving guide 702 may be disposed anywhere as long as the structure is fixed on the side of the case 100 based on the length adjusting link 700.

The first moving guide 701 and the second moving guide 702 are arranged symmetrically with respect to the horizontal direction (front and rear direction in this embodiment) with respect to the third hinge assembly 753. Even if the third hinge assembly 753 is moved in the vertical direction, the symmetry of the first moving guide 701 and the second moving guide 702 is maintained.

In the present embodiment, the first hinge assembly 751 of the first-1st link 731 is assembled to the first moving guide 701, and the second hinge assembly 752 of the 2-1st link 741. ) Is assembled to the second moving guide 702.

The first hinge assembly 751 in the assembled state to the first moving guide 701 provides the rotation and movement of the first-first link 731. Similarly, in the state in which the second moving guide 701 is assembled, the second hinge assembly 752 provides rotation and movement of the 2-1 link 741.

In the present exemplary embodiment, the hinge assembly 750 includes a first hinge part 754 disposed on either one of the first link assembly 730 and the second link assembly 740, and the first link assembly 730 or the first link assembly 730. A second hinge portion 756 disposed on the other of the two link assemblies 740 and a hinge disposed on either one of the first hinge portion 754 or the second hinge portion 756 and coupled to the other. An axis 755.

In the present embodiment, a hinge shaft 755 is disposed on the first hinge portion 754, and the hinge shaft 755 is coupled to the second hinge portion 756.

Threads are formed on the outer circumferential surface of the hinge shaft 755 to be coupled to the second hinge portion 756, and screw grooves are formed on the second hinge portion 756.

The link of the first link assembly 730 and the link of the second link assembly 740 are rotatably coupled to the outer circumferential surface of the hinge shaft 755.

The links of the first link assembly 730 and the links of the second link assembly 740 are each formed with link holes such that the hinge shaft 755 penetrates.

When the screw thread of the hinge shaft 755 and the screw groove of the second hinge portion 756 are screwed, the first hinge portion 754 and the second hinge portion 756 are spaced apart by a predetermined distance. The separation distance between the first hinge portion 754 and the second hinge portion 756 is greater than the thickness of the two through-links. That is, the separation distance between the first hinge portion 754 and the second hinge portion 756 is greater than the thicknesses of the overlapped links of the first link assembly 730 and the second link assembly 740. The through links are free with respect to the axial and circumferential directions of the hinge shaft 755.

Meanwhile, a third moving guide 703 and a fourth moving guide 704 are disposed in the suction grill 400 in a horizontal direction (front and rear directions in this embodiment). The third moving guide 703 and the fourth moving guide 704 have the same structure as the first moving guide 701 and the second moving guide 702.

The lower end of the first link assembly 730 is assembled to the third moving guide 703, and the lower end of the second link assembly 740 is assembled to the fourth moving guide 704.

A first moving guide, a second moving guide, a third moving guide, and a fourth moving guide are also disposed on the case 100 and the suction grill 400 for the first length adjusting link 710.

Hereinafter, the operation process during the lifting or lowering of the suction grill according to an embodiment of the present invention will be described in more detail.

First, the descending process of the suction grill 400 will be described.

The suction grill 400 may be lowered for cleaning the filter or repairing the indoor unit.

When the user inputs an operation signal through the wireless remote control or the wired remote control while the suction grill 400 is mounted on the cover panel 300, the controller determines the input operation signal and lowers the suction grill 400. .

When the suction grille 400 is lowered, the user can adjust the falling length of the suction grille 400. In this embodiment, the suction grill 400 may be differentially lowered to 1m, 2m, 3m, 4.5m.

The controller determines the input operation signal to operate the first unit 510 and the second unit 520 simultaneously, and the drum motor 540 disposed in the first unit 510 and the second unit 520. Determine the amount of rotation.

Each drum motor 540 of the first unit 510 and the second unit 520 is operated at the same time, and the suction grill 300 is inclined only when the rotation speed and the rotation speed of each drum motor 540 match. Can be prevented. To this end, it is preferable to synchronize the drum motors 540 of the first unit 510 and the second unit 520.

In this embodiment, when each drum motor 540 rotates each drum 530 counterclockwise, the suction grill 300 is lowered. On the contrary, when each drum motor 540 rotates each drum 530 clockwise, the suction grill 300 is raised.

When the drum motors 540 rotate the respective drums 530, the rotation amount sensing device 600 disposed in the first unit 510 and the second unit 520 may adjust the rotation detection factor 601. Sensing and detecting at least one of the rotation amount or rotation speed of the drum 530.

The controller determines whether each of the drums 530 is normally rotated through the rotation amount sensing devices 600 of the first unit 510 and the second unit 520.

When the step difference between both sides of the first unit 510 and the second unit 520 is shifted, the counting count of the rotation detection factor 601 may be corrected in the stationary state to correct the step difference. In this embodiment, the counting count of the rotation detection factor 601 is corrected up to three times, and the elevator 500 is driven.

The control unit monitors the descending or elevating process of the suction grill 300 by the elevator 500 through the rotation amount detecting device 600.

When the rotation of any one drum 530 is stopped in the lifting or lowering process, the drum motor 540 is immediately stopped to prevent the inclination or fall of the suction grill 400.

On the other hand, when the suction grill 300 is lowered by the elevator 500, the first length adjusting link 710 and the second length adjusting link 720 guides the lowering of the suction grill 400. .

When the suction grille 400 is lowered while the wires 511, 512, 521, and 522 are released, the first length adjusting link 710 and the second length adjusting link 720 are the suction grille. Suppression or rotation of the 400 is suppressed.

When the wires 511, 512, 521, and 522 are loosened by driving the elevator 500, the first length adjusting link 710 and the second length adjusting link 720 are hinge assemblies 750. Rotating around them, the vertical length is extended.

Most of the load of the suction grill 400 is supported by the wires 511, 512, 521, and 522, and the first length adjusting link 710 and the second length adjusting link 720 are in the vertical direction. The primary role is to guide the movement. However, when an external force is applied to the suction grill 400, the external force is supported by the first length adjusting link 710 and the second length adjusting link 720.

The invention according to the present embodiment separates the load according to the vertical movement and the load according to the external force, it is possible to minimize the load that the elevator 500 is in charge. Unlike the present embodiment, when the elevator 500 is responsible for both the load according to the vertical movement and the load according to the external force, the load that the drum motor 540 is in charge is increased, thereby using a higher output drum motor do.

The first length adjusting link 710 and the second length adjusting link 720 disposed on the left and right sides of the suction grill 400 minimize the movement of the suction grill 400 in the front and rear directions and the left and right directions. Guide the lowering of the suction grill (400).

Next, the lifting process of the elevator 500 will be described in more detail.

In response to the user's operation signal being input while the suction grill 400 is lowered, the controller may raise the suction grill 400 to its original position.

The controller rotates each drum 530 of the first unit 510 and the second unit 520 clockwise to return the suction grill 400 to an initial position. The first unit 510 and the second unit 520 rotate the drums 530 simultaneously, and maintain the same rotation amount and rotation speed of each drum 530 so that the suction grill 400 is horizontal. It is mounted on the cover panel 300 in a state.

The first-first wire 511 and the first-second wire 512 of the first unit 510 and the second-one wire 521 of the second unit 520 and the rotation of the drum 530 and The second-two wire 522 is wound on each drum 530 at the same time.

When the drum 530 of the first unit 510 is rotated, one end of the first-first wire 511 and one end of the first-second wire 512 are connected to the first zone 531 of the drum 530. It is wound while being aligned to the second zone 532.

The first-first wire 511 passes through the first roller 551, the second roller 552, the third roller 553, and the fourth roller 554, and then the drum body of the first zone 531. (535) is wound around the outer circumference. After the 1-1 wire 511 is wound in a single row on the outer circumferential surface of the drum body 535, the 1-1 wire 511 is wound over a 1-1 wire 511 wound in a single row.

The first and second wires 512 pass through the first roller 561, the second roller 562, the third roller 563, and the fourth roller 564, and then the drum body of the second zone 532. (535) is wound around the outer circumference.

Meanwhile, in the second unit 520 which is simultaneously rotated with the first unit 510, the 2-1 wire 521 and the 2-2 wire 522 are wound at the same speed as the first unit 510. .

Like the first unit 510, when the drum 530 of the second unit 520 rotates, one end of the second-first wire 521 and one end of the second-second wire 522 may be a drum ( It is wound while being aligned with the first zone 531 and the second zone 532 of 530.

As in this embodiment, the suction grill 400 is connected to the 1-1 wire 511, the 1-2 wire 512, the 2-1 wire 521 and the 2-2 wire 522. Four points are supported.

In the state in which the suction grill 400 is supported by four points, the suction grill 400 is synchronized by synchronizing the rotation amount and the rotation speed of each drum 530 disposed in the first unit 510 and the second unit 520. Both sides of can be raised or lowered simultaneously.

In the indoor unit according to the present embodiment, the drum motor 540 is disposed in the first unit 510 and the second unit 520, respectively, but the control unit uniformly distributes four wires through the rotation amount sensing device 600. Can be controlled.

In addition, since the indoor unit according to the present embodiment provides a structure capable of simultaneously winding or unwinding the 1-1 wire 511 and the 1-2 wire 512 by driving one drum 530, suction Tilt of the grill 400 may be prevented.

On the other hand, when the suction grill 400 is raised, the first length adjusting link 710 and the second length adjusting link 720 is the suction while minimizing the movement of the suction grill 400 in the front and rear and left and right directions Guide the rise of the grill 400.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments but may be manufactured in various forms, and having ordinary skill in the art to which the present invention pertains. It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

100: case 101: inlet
102: discharge port 103: suction flow path
104: discharge passage 110: case housing
130: indoor heat exchanger 140: indoor blowing fan
200: discharge vane 300: cover panel
400: suction grill 500: elevator
510: first unit 520: second unit
511: 1-1 wire 512: 1-2 wire
521: 2-1 wire 522: 2-2 wire
530: drum 540: drum motor
550: first roller box 551: first roller
552: second roller 553: third roller
554: fourth roller 555: box
556: roller elastic member 557: rail
560: first roller box 561: first roller
562: second roller 563: third roller
564: fourth roller 565: box
566: roller elastic member 567: rail
700: length control link 710: first length control link
720: second length adjustment link 730: first link assembly
740: second link assembly 750: hinge assembly

Claims (10)

In the indoor unit of the air conditioner installed on the ceiling,
The indoor unit has a case formed with a suction port and a discharge port on the bottom;
A suction grill disposed in the case and covering the suction port and detachable in a vertical direction from the case;
An elevator disposed at the case side and connected to the suction grill via a wire and moving the suction grill in a vertical direction by unwinding or winding the wire;
A first length adjusting link disposed at one side of the case and the suction grill, and having an upper end assembled at the case side, a lower end assembled at the suction grill, and guiding the vertical movement of the suction grill when the elevator is operated; ;
A second length adjusting link disposed on the other side of the case and the suction grill, an upper end of which is assembled on the case side, and a lower end of which is assembled on the suction grill, which guides the vertical movement of the suction grill during operation of the elevator; Indoor unit of the air conditioner, including. The method according to claim 1,
The first length adjustment link,
At least one first link having an upper end rotatably coupled to the case side and a lower end rotatably coupled to the suction grill side; At least one second link having an upper end rotatably coupled to the case side and a lower end rotatably coupled to the suction grill side; And a hinge assembly rotatably coupling the first link and the second link.
The second length adjustment link,
At least one first link having an upper end rotatably coupled to the case side and a lower end rotatably coupled to the suction grill side; At least one second link having an upper end rotatably coupled to the case side and a lower end rotatably coupled to the suction grill side; And a hinge assembly for rotatably coupling the first link and the second link. The method according to claim 2,
The first link and the second link are each provided in plurality,
The hinge assembly includes: a first hinge assembly for rotatably coupling two adjacent first links;
The hinge assembly includes a second hinge assembly for rotatably coupling two adjacent second links;
And a third hinge assembly configured to rotatably couple the first link and the second link. The method according to claim 2,
A first moving guide disposed at the case side and rotatably coupled to an upper end of the first link of the first length adjusting link and guiding an upper end of the first link of the first length adjusting link in a horizontal direction;
A second moving guide disposed at the case side and rotatably coupled to an upper end of the second link of the first length adjusting link and guiding an upper end of the second link of the first length adjusting link in a horizontal direction;
A third moving guide disposed at the case side, rotatably coupled to a lower end of the first link of the first length adjusting link, and guiding a lower end of the first link of the first length adjusting link in a horizontal direction;
A fourth moving guide disposed on the case side and rotatably coupled to a lower end of the second link of the first length adjusting link and guiding a lower end of the second link of the first length adjusting link in a horizontal direction; Indoor unit of air conditioner. The method according to claim 4,
The first link and the second link are each provided in plurality,
The hinge assembly includes: a first hinge assembly for rotatably coupling two adjacent first links; The hinge assembly includes a second hinge assembly for rotatably coupling two adjacent second links; And a third hinge assembly rotatably coupling the first link and the second link.
The first moving guide and the second moving guide are arranged symmetrically with respect to the horizontal direction with respect to the third hinge assembly, and the third moving guide and the fourth moving guide are disposed symmetrically with respect to the horizontal direction. Indoor unit. The method according to claim 2,
A first moving guide disposed at the case side and rotatably coupled to an upper end of the first link of the second length adjusting link and guiding an upper end of the first link of the second length adjusting link in a horizontal direction;
A second moving guide disposed at the case side, rotatably coupled to an upper end of the second link of the second length adjusting link, and guiding the upper end of the second link of the second length adjusting link in a horizontal direction;
A third moving guide disposed on the case side, rotatably coupled to a lower end of the first link of the second length adjusting link, and guiding a lower end of the first link of the second length adjusting link in a horizontal direction;
A fourth moving guide disposed at the case side, rotatably coupled to a lower end of the second link of the second length adjusting link, and guiding a lower end of the second link of the second length adjusting link in a horizontal direction; Indoor unit of air conditioner. The method according to claim 6,
The first link and the second link are each provided in plurality,
The hinge assembly includes: a first hinge assembly for rotatably coupling two adjacent first links; The hinge assembly includes a second hinge assembly for rotatably coupling two adjacent second links; And a third hinge assembly rotatably coupling the first link and the second link.
The first moving guide and the second moving guide are arranged symmetrically with respect to the horizontal direction with respect to the third hinge assembly, and the third moving guide and the fourth moving guide are disposed symmetrically with respect to the horizontal direction. Indoor unit. The method according to claim 1,
A first unit fixed to the case and lifting or lowering one side of the suction grill by simultaneously winding or unwinding the 1-1 wire and the 1-2 wire;
A second unit fixed to the case and lifting or lowering the other side of the suction grill by simultaneously winding or unwinding the 2-1 wire and the 2-2 wire;
The first unit,
A drum to which one end of the 1-1 wire and one end of the 1-2 wire are respectively fixed; And a drum motor for rotating the drum.
The second unit,
A drum to which one end of the 2-1 wire and one end of the 2-2 wire are respectively fixed; And a drum motor for rotating the drum.
One end of the 1-1 wire and one end of the 1-2 wire are coupled to the drum of the first unit, and the other end of the 1-1 wire and the other end of the 1-2 wire are connected to one side of the suction grill. Each combined,
One end of the 2-1 wire and one end of the 2-2 wire are coupled to the drum of the second unit, and the other end of the 2-1 wire and the other end of the 2-2 wire are connected to the other side of the suction grill. Indoor unit of air conditioner respectively coupled. The method according to claim 1,
The first unit,
A drum to which one end of the 1-1 wire and one end of the 1-2 wire are respectively fixed; A drum motor for rotating the drum; A 1-1 roller box arranged through the 1-1 wire and aligning the position of the 1-1 wire when the 1-1 wire is wound or unwound; A 1-2 roller box which is disposed through the 1-2 wire and aligns the position of the 1-2 wire when the 1-2 wire is wound or unwound; Includes; a rotation amount detecting device for sensing the rotation amount of the drum,
The second unit,
A drum to which one end of the 2-1 wire and one end of the 2-2 wire are respectively fixed; A drum motor for rotating the drum; A 2-1 roller box arranged through the 2-1 wire and aligning the position of the 2-1 wire when the 2-1 wire is wound or unwound; A 2-2 roller box arranged to penetrate the 2-2 wire and aligning the position of the 2-2 wire when the 2-2 wire is wound or unwound; An indoor unit of an air conditioner comprising a; rotation amount sensing device for sensing the rotation amount of the drum. The method according to claim 9,
The first unit further includes a unit case in which the drum and the drum motor are installed, the unit case of the first unit is fixed to the case,
The second unit further includes a unit case in which the drum and the drum motor are installed, the unit case of the second unit is fixed to the case,
The unit case of the first unit may include a first hole through which the first-first wire passes; And a second hole through which the 1-2 wire passes.
The unit case of the second unit may include a first hole through which the second-first wire passes; And a second hole through which the 2-2 wire passes.
The distance between the first hole and the second hole of the first unit is equal to the distance between the first hole and the second hole of the second unit,
The indoor unit of the air conditioner, wherein the first and second holes of the first unit are disposed to face the first and second holes of the second unit, respectively, based on the suction grill.

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