KR20170019290A - Indoor unit for air conditoiner - Google Patents

Abstract

The present invention provides an indoor unit for an air-conditioner capable of improving convenience of a service work. According to one embodiment of the present invention, the indoor unit comprises: a cabinet installed inside an indoor ceiling; a blowing fan installed inside the cabinet; a heat exchanger installed to surround the outside of the blowing fan; a drain fan assembly received inside the cabinet to form an air circulation path and collect condensate generated in the heat exchanger; a front panel installed on an opening surface of the cabinet to form the appearance exposed to a ceiling surface, and having a panel opening through which indoor air is sucked and a front panel discharge hole from which the heat exchanged air is discharged; a suction grille installed to open/close the panel opening and having a suction hole through which the indoor air is sucked; and a control box installed inside the cabinet exposed through the panel opening and closed by the suction grille.

Description

Indoor unit for air conditioner < RTI ID = 0.0 >

The present invention relates to an indoor unit of an air conditioner.

In general, an air conditioner is a cooling / heating system for cooling or heating a city by an operation of sucking indoor air and exchanging heat with coolant of low or high temperature and discharging it to the room, And a valve-evaporator.

Particularly, the air conditioner mainly comprises an outdoor unit (also referred to as an 'outdoor side' or a 'heat radiating side') installed in an outdoor space and an indoor unit (also referred to as an 'indoor side' or ' A condenser (outdoor heat exchanger) and a compressor are installed in the outdoor unit, and an evaporator is installed in the indoor unit (indoor heat exchanger).

As is well known, the air conditioner can be broadly divided into a separate type air conditioner in which an outdoor unit and an indoor unit are separated from each other, and an integral type air conditioner in which an outdoor unit and an indoor unit are integrally installed. In consideration of installation space and noise, Harmonics are preferred.

In the multi-type air conditioner of the separate type air conditioner, a plurality of indoor units are connected to one outdoor unit, and the indoor units are installed in the room for air conditioning, thereby providing a plurality of air conditioners.

Among indoor units of the multi-type air conditioner, indoor units of a cassette type air conditioner installed in the ceiling of the indoor space for cooling and heating the indoor space are widely used.

Korean Unexamined Patent Application Publication No. 10-2009-0006305 discloses an indoor unit of a cassette type air conditioner installed on a ceiling. In order to fix an indoor unit to a ceiling wall, an anchor bolt and a bolt socket And has a structure in which the constituent mounting means is adhered.

In order to install the indoor unit with this structure, the cabinet must be installed first and then the lower panel must be installed in the cabinet. Therefore, workability is very low. To adjust the equilibrium after installation or to adjust other installation, There is a problem that workability such as mounting must be very low.

Korean Patent Laid-Open Publication No. 10-2008-0052927 discloses an indoor unit of an air conditioner having an inspection port formed at four corners of a front panel and capable of adjusting a mounting state of the indoor unit by approaching an installation bracket through an opening of the inspection port. .

However, in the case of such a structure, it is necessary to open and close all the four checker cover in order to operate the mounting means mounted on the mounting bracket. Therefore, there is a problem that workability is poor. In particular, The cover is required to be mounted in a rotatable structure, so that the number of assembling operations is increased and the productivity is lowered.

It is an object of the present invention to provide an indoor unit of an air conditioner that can open all check doors accessible to a mounting bracket installed in a cabinet when the suction grille is opened,

An indoor unit of an air conditioner according to an embodiment of the present invention includes a cabinet disposed inside a ceiling of a room and accommodating a blowing fan and a heat exchanger; A mounting bracket provided on an outer surface of the cabinet, the mounting bracket being coupled to mounting means for fixed installation; A front panel mounted on an opening surface of the cabinet to form an outer appearance exposed through a ceiling surface; A grill receiving part formed to be recessed in the front panel and having a panel opening through which indoor air is sucked into the recessed inner area and a front panel discharge port through which heat exchanged air is discharged; A suction grille in which a suction port to be sucked is formed; And a plurality of check openings that are opened to expose the mounting bracket in the grill receiving portion and are opened and closed by the suction grill.

And the inspection hole is located on a vertical line of the mounting bracket.

And the check port is disposed between the panel opening and the outer end of the grill receiving portion.

And the inspection ports are spaced apart from each other in a direction intersecting the panel discharge port.

And a rim extending toward the mounting bracket along the periphery of the inspection hole is further formed.

And the panel discharge port is located at an outer end of the grill receiving portion.

A drain pan assembly that is seated inside the cabinet to form a flow path of air and collects condensed water generated in the heat exchanger; And an orifice that is seated in the drain pan assembly and forms a passage through which the suction air flows toward the blowing fan.

And a panel coupling part is formed at a position facing the inner side of the panel opening so as to be inserted into the insertion opening of the coupling part opened in the drain pan assembly.

The panel connecting portion includes: a horizontal portion extending inward of the panel opening; An extension extending from the end of the horizontal portion to the drain pan assembly side; And an engaging portion that is bent at an end of the extended portion and is engaged and locked at the inside of the engaging portion inserting opening.

Wherein the panel fixing portion is formed on the circumferential surface of the orifice so as to be coupled to the engaging portion and the panel fixing portion is formed in the drain pan assembly corresponding to the panel fixing portion, And the panel fixing portion and the panel insertion portion are in contact with each other to form the coupling portion insertion port.

According to the present invention having the above-described configuration, the following effects can be expected.

First, the suction grill is mounted on the front panel so as to be openable and closable, and by opening and closing the suction grille, it is possible to simultaneously open the panel openings on the front panel as well as the inspection openings. Each of the inspection holes is positioned on a vertical line of the mounting bracket so that the mounting means coupled to the mounting bracket through the inspection hole can be operated. Therefore, the installation means can be operated only by a simple operation of opening the suction grill without separating the front panel as a whole or opening the cover of each inspection port, and the service after installation or installation of the indoor unit becomes very easy have.

Second, since the suction grill configured to open the panel opening of the front panel can be opened and closed all the way to the check port, it is possible to control the installation of the indoor unit with a very simple structure, thereby improving the productivity and assembling workability .

Thirdly, the panel coupling portion formed on the front panel is inserted into the hook coupling portion of the drain pan assembly, so that the front panel can be fixed, thereby making it possible to more easily and safely perform the operation of disassembling and assembling the front panel .

1 is a perspective view of an indoor unit of an air conditioner according to an embodiment of the present invention.
2 is an exploded perspective view of the indoor unit.
3 is an exploded perspective view showing a coupling structure of a front panel and a suction grill according to an embodiment of the present invention.
4 is a plan view of the suction grille being opened;
5 is a cross-sectional view taken along line 5-5 'of FIG.
6 is a partially cutaway perspective view of the front panel.
7 is a cross-sectional view taken along line 7-7 'of FIG.
8 is a perspective view of the suction grill being opened.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, it should be understood that the present invention is not limited to the embodiment shown in the drawings, and that other embodiments falling within the spirit and scope of the present invention may be easily devised by adding, .

1 is a perspective view of an indoor unit of an air conditioner according to an embodiment of the present invention. 2 is an exploded perspective view of the indoor unit.

As shown in the drawings, an indoor unit 1 of an air conditioner according to an embodiment of the present invention (hereinafter referred to as "indoor unit") includes a cabinet 10 inserted into a ceiling of an indoor space as a whole, And a front panel 20 and a suction grille 21 which are exposed to the lower side of the ceiling when the indoor unit is installed.

In the cabinet 10, a heat exchanger 30 for heat exchange with air to be sucked, a blowing fan 40 for forced suction and discharge of indoor air, and air sucked toward the blowing fan 40 A drain pan assembly 60 for collecting condensed water generated in the heat exchanger 30, and a drain pump 70 for discharging the collected condensed water to the outside.

The front panel 20 may be mounted on the lower end of the cabinet 10 and may have a substantially rectangular shape when viewed from below. The front panel 20 may be formed to protrude further outward than the lower end of the cabinet 10 so that the perimeter of the front panel 20 contacts the lower surface of the ceiling.

The front panel 20 may be provided with a front panel discharge port 22 serving as an outlet for air discharged through the cabinet 10. The front panel discharge ports 22 may be formed on opposite sides of the front panel 20 and may be formed at positions corresponding to the outer ends of the cabinets 10. The panel discharge opening 22 may be formed to be long along the longitudinal direction of the front panel 20 and may be opened or closed by a vane 23 mounted on the front panel 20.

A suction grille 21 is mounted at a central portion of the front panel 20 to form a part of the bottom surface of the indoor unit 1. The suction grille 21 is positioned between the pair of front panel discharge openings 22 and may be formed in a plate shape capable of shielding the opening at the center of the front panel 20.

The suction grille 21 forms a passage for air flowing into the indoor unit 1. That is, at least a part of the suction grille 21 is formed in a grill or lattice shape to form a plurality of suction ports 213 so that indoor air can flow smoothly.

The cabinet 10 may include an outer plate 11 forming an outer appearance and an inner case 12 disposed inside the outer plate 11.

The out plate 11 may be configured to form an outer appearance of the cabinet 10 in which a plate-shaped steel material is opened. The out plate 11 may be formed by combining the structures forming each surface, and may be formed by bending the at least one surface.

In addition, two mounting brackets 111 may be provided on both sides of the out plate 11. The mounting bracket 111 is fixedly mounted on the mounting bracket 111 when the indoor unit 1 is installed in an indoor space. The mounting bracket 111 can be installed in the indoor space .

The mounting means 2 is fixed to the ceiling surface and includes an anchor bolt extending vertically and passing through a mounting hole 111a of the mounting bracket 111 and an anchor bolt passing through the mounting bracket 111. [ Lt; / RTI > socket. Therefore, the installation means 2 can be fixedly mounted on the four mounting brackets 111 provided on the out plate 11, and the indoor unit 1 can be fixed. The mounting means 2 may be variously configured in addition to the configuration described in the embodiment, and any type of mounting means 2 that can be fixed to the mounting bracket 111 may be possible.

On the other hand, the mounting brackets 111 are located on both right and left sides of both sides, and are vertically above the inspection port 25 of the front panel 20, which will be described below. Therefore, it is possible to access the mounting bracket 111 through the inspection opening 25, and the operation such as mounting or installation position change or horizontal operation of the indoor unit 1 through the operation of the installation means 2 Lt; / RTI >

The inner case 12 is formed on the inner surface of the outboard plate 11. The inner case 12 may be formed of a heat insulating material such as EPS (Expended Polystyrene) to insulate the inside of the cabinet 10 and prevent noise vibration. The inner case 12 is in close contact with the outer plate 11 to form a shape inside the cabinet 10 and may be formed such that the surface in contact with the front panel 20 is completely opened.

The inner space of the inner case 12 is provided with the blowing fan 40 and the heat exchanger 30 may be disposed around the blowing fan 40. The heat exchanger 30 is disposed along the inner surface of the inner case 12 so as to be spaced apart from the wall surface of the inner case 12 and the blowing fan 40.

Therefore, the air sucked in the axial direction of the blowing fan (40) is discharged while being rotated in the circumferential direction of the blowing fan (40) and can be exchanged with the refrigerant while passing through the heat exchanger (30).

A drain pan assembly 60 is mounted on the opened surface of the cabinet 10 to shield the opened surface of the cabinet 10. The drain pan assembly (60) is mounted on the upper end of the inner case (12).

A discharge port 13 communicating with the front panel discharge port 22 and discharging heat-exchanged air may be defined on both sides of the cabinet 10 by mounting the drain pan assembly 60. A suction port is formed at the center of the drain pan assembly 60 so that the air sucked through the suction grill 21 is directed toward the blowing fan 40.

The drain pan assembly 60 includes a body 61, a fan plate 62 forming a surface facing the inner side of the inner case 12, an orifice member 50 mounted at the center of the body 61, ≪ / RTI >

The body 61 may be formed of the same material as the inner case 12, and the inside of the cabinet 10 may be insulated. The body 61 forms an overall shape of the drain pan assembly 60.

The orifice member 50 is mounted at the center of the body 61 and the panel inserting portion 612 may be formed at one side of the body 61 in contact with the orifice 50. The panel inserting portion 612 is formed at a position corresponding to the panel fixing portion 523 formed in the orifice member 50 when the orifice member 50 is mounted and is connected to the panel connecting portion 202 are inserted.

The orifice 50 is mounted at the center of the opening of the body 61 and may be injection molded of a plastic material. An orifice hole 51 is formed at the center of the orifice 50 and the sucked air passes through the orifice hole 51 and is directed to the blowing fan 40.

An edge having a predetermined height is formed around the bottom surface of the orifice 50 and a panel fixing portion 523 is formed on the edge of the orifice 50 at a position corresponding to the panel inserting portion 612 .

The panel inserting portion 612 and the panel fixing portion 523 form an engaging portion inserting opening 524 by mounting the orifice 50 to the body 61, The panel fixing portion 523 can be engaged with the panel coupling portion 202 through the through hole. Accordingly, the front panel 20 is fixed to one side of the drain pan assembly 60.

The body 61 has recesses 613 formed on both sides thereof to be recessed inwardly and the depressions 613 form the discharge port 13 when the drain pan assembly 60 is mounted . In addition, a box receiving portion 614 may be formed on the other side of the body 61 to provide a space in which the control box 80 can be disposed.

The fan plate 62 is provided below the body 61. The fan plate 62 receives the lower portion of the body 61 and forms the entire bottom surface of the drain pan assembly 60. The fan plate 62 may be formed of a plastic material different from the body 61 and may be configured to protect the body 61 by forming the bottom surface of the drain pan assembly 60. [ have.

The fan plate 62 may have a structure in which the body 61 is press-fitted or bonded to the fan plate 62 after injection molding with a plastic material. In addition, the fan plate 62 may be formed by injection molding when the body 61 is molded. If necessary, the fan plate 62 and the body 61 may be integrally formed of the same material.

A space for collecting condensed water may be formed in the fan plate 62, and a suction side of the drain pump 70 may be positioned to suck and discharge the collected condensed water. The fan plate 62 may be formed with a heat exchanger accommodating portion accommodating the end portion of the heat exchanger 30.

One side of the fan plate 62 is provided with a control box seating portion 624 disposed on the side of the box receiving portion 614 when coupled with the body 61 so that the control box 80 can be seated thereon . The control box 80 can be exposed to the panel opening 24 of the front panel 20 when the suction grille 21 is opened when the control box 80 is seated in the box seating part 624.

3 is an exploded perspective view showing a coupling structure of a front panel and a suction grill according to an embodiment of the present invention. 4 is a plan view of the suction grille being opened. 5 is a cross-sectional view taken along line 5-5 'of FIG. 6 is a partially cut-away perspective view of the front panel.

As shown in the figure, the front panel 20 is formed in a rectangular shape larger than the size of the cabinet, and is exposed to the ceiling face to form an appearance when the indoor unit 1 is installed.

The front panel 20 is formed with a grill receiving part 201 recessed along the shape of the front panel 20 as a whole with four rounded corners, The panel opening 24 can be formed.

The panel opening 24 may be configured to correspond to the size of the open upper surface of the cabinet 10 and may be configured to expose an internal configuration of the cabinet 10. A coupling member such as a screw is fastened around the panel opening 24 so that the cabinet 10 and the front panel 20 are firmly coupled to each other.

Panel coupling portions 202 are formed on both sides of the panel opening 24. The panel coupling portion 202 is for fixing the front panel 20 to the cabinet 10 and more specifically to the drain pan assembly 60. The panel insertion portion 524, respectively.

The panel coupling portion 202 and the coupling portion insertion opening 524 provide a temporary fixing structure so that the front panel 20 remains temporarily fixed without being dropped when the front panel 20 is mounted or disassembled .

The panel fitting portion 202 includes a horizontal portion 202a extending from the inner side of the panel opening 24 to the inside of the panel opening 24 and a lower portion extending downward from the end of the horizontal portion 202a A vertical part 202b and a latch part 202c projecting laterally from the end of the vertical part 202b.

5, in a state where the front panel 20 is coupled, the panel coupling portion 202 is inserted into the coupling portion insertion port 524. At this time, the vertical portion 202b is inserted into the insertion portion 524 of the coupling portion, and the engagement portion 202c can be engaged with the panel fixing portion 523. Accordingly, the panel coupling portion 202 can be maintained in a state fixed to the drain pan assembly 60.

The front panel 20 and the drain pan assembly 60 are integrally and stably coupled to each other. The front panel 20 and the drain pan assembly 60 are formed on the inner surface of the panel opening 24 facing each other, .

Meanwhile, a panel discharge opening 22 may be formed in the grill receiving portion 201 on the front panel 20. The panel discharge port 22 is positioned between the panel opening 24 and the outer end of the grill receiving portion 201 and may extend along the longitudinal direction of the front panel 20.

The panel discharge port 22 extends along the outer end of the depressed grill receiving portion 201 and both ends of the panel discharge port 22 are rounded along the rounded corner of the grill receiving portion 201 I have. The panel discharge port 22 is provided with a vane 23 for opening and closing the panel discharge port 22 to guide the discharge direction of the heat exchange air discharged from the panel discharge port 22.

An inspection hole 25 may be formed on both sides of the grill receiving part 201 intersecting with the panel discharge opening 22. The inspection opening 25 is open between the panel opening 24 and the outer end of the grill receiving portion 201 and may be formed on each of two sides.

The inspection hole 25 is formed to penetrate through the front panel 20 and communicate with an outer area of the cabinet 10. [ In detail, the inspection port 25 may be formed below the mounting bracket 111 and may be configured to allow the user to manipulate the mounting means 2 mounted on the mounting bracket 111 . Accordingly, the mounting bracket 111 can be exposed through the inspection opening 25 when viewed from below as shown in FIG.

At least a part of the inspection hole 25 may be formed along the outer end of the grill receiving portion 201 and a pair of inspection holes 25 formed on the same side may be spaced apart from each other. A rim portion 251 extending toward the mounting bracket 111 side is formed around the inspection port 25. The edge portion 251 prevents the unnecessary portion from being exposed to the check port 25 side and prevents the user's hands or arms from being injured by contact.

The grill receiving portion 201 is connected to the suction grill 21 and rotates to open and close the panel opening 24 and the inspection ports 25 at the same time by the rotation of the suction grill 21 Apparatus 212 is provided. Both ends of the pivoting device 212 are rotatably connected to the front panel 20 and the suction grille 21, and a pair of the pivoting devices 212 are positioned in one direction of the suction grille 21.

The other end of the suction grille 21 may be provided with a restraining device 211 for maintaining the suction grille 21 fixedly mounted on the front panel 20. A part of the restraining device 211 may be exposed to the outside of the suction grill 21 and the suction grill 21 may be selectively released from the front panel 20 by a user's operation, Lt; / RTI >

The suction grille 21 is formed to shield the panel opening 24 opened at the center of the front panel 20. The suction grill 21 may be located inside the grill receiving portion 201 of the front panel 20 and may extend along an inner end of the panel discharge port 22 and an outer end of the grill receiving portion 201 . In other words, both end portions of the suction grill 21 may be formed to correspond to the inner end shape of the panel discharge port 22, and the other ends of the suction grille 21 may be formed at the opposite ends of the grill receiving portion 201 Can be formed along the depressed line.

Therefore, when the suction grill 21 is closed, the grill receiving portion 201 including the panel opening 24 and the inspection hole 25 can be covered, and the inner end line of the panel discharge opening 22 . In addition, the grill receiving portion 201 is spaced apart from the recessed line by a predetermined distance so that the line of the grill receiving portion 201 can be seen as a closed loop through the outer appearance.

Hereinafter, the process of adjusting the installation state of the indoor unit 1 according to the embodiment of the present invention will be described with reference to the drawings.

7 is a cross-sectional view taken along line 7-7 'of FIG. 8 is a perspective view of the suction grille being opened.

As shown in the figure, when a service such as checking or replacing the user's body 83 is required in a state where the indoor unit 1 is mounted on the ceiling, the suction grill 21 .

The restraining device 211 is operated to release the restraint between the suction grill 21 and the front panel 20 in order to open the suction grill 21. [ In this state, the opposite side of the restraining device 211 is connected to the hinge device 212 and can be rotated by the hinge device 212 while being connected to the front panel 20.

By this operation, the suction grille 21 can completely open the grill receiving portion 201 of the front panel 20. Therefore, the open surface of the cabinet 10 can be completely exposed through the panel opening 24, and all four check holes 25 provided on both sides of the grill receiving portion 201 can be opened do.

When viewed from below, the mounting bracket 111 can be exposed through the inspection opening 25 and the mounting means 2 coupled with the mounting bracket 111 can be exposed.

Therefore, the operator can adjust the coupling of the mounting bracket 111 and the mounting means 2 by inserting his / her hand into the inspection hole 25, and the respective mounting brackets 111, The mounting state of the indoor unit 1 can be adjusted by adjusting the connection of the mounting unit 2 and the mounting unit 2.

After the installation of the indoor unit 1 is adjusted, the suction grill 21 is rotated again to cover the panel opening 24 and the inspection ports 25 at the same time, So that the grille 21 can be fixed on the front panel 20.

Claims (10)

A cabinet disposed inside the ceiling of the room, the cabinet housing the blowing fan and the heat exchanger;
A mounting bracket provided on an outer surface of the cabinet, the mounting bracket being coupled to mounting means for fixed installation;
A front panel mounted on an opening surface of the cabinet to form an outer appearance exposed through a ceiling surface;
A grill receiving portion formed on the front panel and having a panel opening through which indoor air is sucked into the recessed inner region and a front panel discharge port through which the heat exchanged air is discharged,
A suction grille mounted to open and close the grill receiving portion and having a suction port for sucking indoor air; And
And a plurality of check ports opened by the suction grille so as to expose the mounting bracket in the grill receiving portion.
The method according to claim 1,
And the check port is positioned on a vertical line of the mounting bracket.
3. The method of claim 2,
And the check port is disposed between the panel opening and an outer end of the grill receiving portion.
3. The method of claim 2,
And the check port is spaced apart from each other in a direction intersecting with the panel discharge port.
3. The method of claim 2,
And a rim extending toward the mounting bracket is formed along the periphery of the inspection hole.
The method according to claim 1,
And the panel discharge port is located at an outer end of the grill receiving portion.
The method according to claim 1,
A drain pan assembly that is seated inside the cabinet to form a flow path of air and collects condensed water generated in the heat exchanger;
And an orifice mounted on the drain pan assembly and forming a passage through which the suction air flows toward the blowing fan.
8. The method of claim 7,
Wherein a panel coupling portion is formed at a position facing the inner side of the panel opening so as to be inserted into an insertion opening of the coupling portion opened in the drain pan assembly.
9. The method of claim 8,
Wherein the panel-
A horizontal portion extending inward of the panel opening;
An extension extending from the end of the horizontal portion to the drain pan assembly side;
And an engaging portion that is bent at an end of the extending portion and is engaged and locked at the inside of the engaging portion inserting opening.
10. The method of claim 9,
A panel fixing part formed on the circumferential surface of the orifice to be recessed inward and to be engaged with the engaging part,
Wherein the panel fixing portion and the corresponding drain pan assembly are formed with panel insertion portions which are depressed outwardly,
Wherein when the orifice is mounted, the panel fixing portion and the panel insertion portion are in contact with each other to form the coupling portion insertion port.

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