WO2003014628A2

WO2003014628A2 - Air conditioner

Info

Publication number: WO2003014628A2
Application number: PCT/KR2002/001536
Authority: WO
Inventors: Kam Gyu Lee; Ju Ho Ock
Original assignee: Lg Electronics Inc.
Priority date: 2001-08-11
Filing date: 2002-08-10
Publication date: 2003-02-20
Also published as: KR20030014538A; CN1208584C; KR100437384B1; CN1401944A; WO2003014628A3; AU2002324347A1; CN2564922Y

Abstract

An air-conditioner is disclosed, which has a small size with a more sophisticated appearance and provides more various information to a user. The air-conditioner includes a main chassis (10) for receiving various components, a heat exchanger (20) being installed inside the main chassis (10) for exchanging heat with room air, a blow fan (30) being installed inside the main chassis (10) for sucking in and blowing out the room air, a front panel (40) being attached to the front side of the main chassis (10) and having an intake inlet (41a) at its front face to make air flowed into the heat exchanger (20), and an display panel (50) detachably installed on the front face of the front panel (40) revolvably so as to selectively close/open the intake inlet (41a) and displaying various information.

Description

AIR CONDITIONER

BACKGROUND OF THE INVENTION

Field of the Invention

The present invention relates to an air conditioner, and more particularly, to an indoor unit of an air conditioner.

Description of the Related Art

Generally, an air conditioner is an apparatus for cooling an air for a pleasant air condition in a room by circulating the cooled air in the room. Air conditioners are divided into a one-body type air conditioner having all components built in one unit and a separate type air conditioner having all components built in outdoor and indoor units. The separate type air conditioners are divided into a wall-hanging type air conditioner hanging an indoor unit on a wall, a stand type air conditioner installing an indoor unit on a layer, and a ceiling- suspended type air conditioner having an indoor unit suspended at a ceiling or installing the indoor unit inside the ceiling.

FIG. 1 illustrates a perspective view of an indoor unit of a general separate type air conditioner.

Referring to FIG. 1, an indoor unit of a general separate type air conditioner includes a main chassis 1 forming an exterior so as to be hung on an indoor wall surface, a front panel 3 installed at a front face of the main chassis 1, an intake grill 5a formed at the front panel 3, and a blow grill 7 installed at a lower end of the front panel 3. And, a display unit 9 is installed between the intake grill 5a and blow grill 7 so as to display a current operational status or guiding a user' s operation. Besides, an additional intake grill 5b may be installed at an upper face of the main chassis 1.

Yet, the above-explained air conditioner according to a related art has the following problems or disadvantages. First, since the main chassis 1 and front panel 3 protrude round toward a front side, a width between front and rear sides is considerably wide. Moreover, the intake grill 5a plays roles in protecting inner components of the indoor unit and guiding an external air, but becomes one of the reasons of increasing the width of the indoor unit as well as degrading the exterior of the indoor unit. Hence, the indoor unit according to the related art occupies too much space as well as fails to provide a neat appearance. Second, the intake grills 5a and 5b are always open in part, whereby particles such as dust and the like penetrate into the indoor unit through the intake grills.

Third, relation between reciprocal positions of the intake and blow grills 5a and 7 brings about interference between the sucked-in and blown air. Namely, as both of the intake and blow grills 5a and 7 are located at the front face of the main chassis 1, the sucked-in air for heat-exchange is usually mixed with the heat-exchanged air. In this case, the heat-exchanged air having failed completely to circulate through the room is sucked in a heat exchanger 11 through the intake grill 5a, thereby reducing heat-exchange efficiency.

Fourth, a dead zone failing to be supplied with the heat-exchanged air is generated from a space right beneath the main chassis 1 due to the structure of the blow grill 7. It is a matter of course that a blowing direction of the heat-exchanged air can be adjusted by a vane or louver. It is impossible to supply the space beneath the main chassis 1 with the heat-exchanged air directly.

Fifth, the display unit 9 generally has a small size due to an intake grill 5a formed on the front face of the indoor unit. Therefore it is difficult for a user to identify the information displayed on the display unit 9. Especially, because the indoor unit, is hung relatively high on the wall, the user may have more difficulty in checking the information on the display unit 9. Also, because of its small size, the display unit 9 cannot provide the user with various information enough to satisfy the user.

SUMMARY OF INVENTION

Accordingly, the present invention is directed to an air conditioner that substantially obviates one or more problems due to limitations and disadvantages of the related art.

An object of the present invention is to provide an ^• .air conditioner that has a slimmer exterior.

Another object of he present invention is to provide an air conditioner that prevents interference between one air before heat exchange and the other air after the heat exchange.

Another object of the present invention is to provide an air conditioner that minimizes the penetration of particles.

Another object of the present invention is to provide an air conditioner that supplies a room with a heat- exchanged air evenly. Another object of the present invention is to provide an air conditioner that provides a user with more various information.

Another object of the present invention is to provide an air conditioner that enables a user to check the information on a display unit easily.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed. out in the written description and . claims hereof as well as the appended drawings . To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, an air conditioner according to the present invention includes a main chassis receiving various components inside, a heat exchanger installed inside the main chassis so as to exchange heat with a room air, a blow fan installed inside the main chassis so as to suck in and blow out the room air, a front panel attached to a front side of the main chassis and having an intake inlet at a front face so as to make an air flow in the heat exchanger, and an display panel installed at the front face of the front panel revolvably so as to close/open the intake inlet selectively, and displaying various information. As for the display panel, a liquid crystal panel (LCD) or a plasma display panel (PDP) may be used.

The information displayed on the display unit may be an operation status of the air conditioner such as a current room temperature, a desired temperature, an amount of airflow. In addition, information could be specific picture information.

Preferably, the display panel further includes a picture signal provider to be provided with a picture signal. The picture signal provider reproduces a picture signal recorded in an optical recording medium or in a magnetic recording medium. Alternatively, the picture signal provider can connect the display panel to an external picture-reproducing device. Also, the picture signal provider can store a certain amount of information in itself or receive a broadcasting signal from the outside. Preferably, the picture signal provider is detachably provided in the main chassis.

Meanwhile, the display panel in operation maintains a predetermined tilt angle for the front panel, for which the display panel has a driving means for revolving the display panel within a limited range.

The driving means includes first and second links. The first link has a first end connected to the front panel in a revolvable way. The second link has a first end connected to a second end of the first link in revolvable way, facing the first end of the first link, and also has a second end connected to the display panel in a revolvable way. Preferably, the driving means further includes a motor connected to the first end of the first link so as to revolve the first link automatically. It is preferred that the motor is a step motor enabling to control a revolution degree of the first link step by step. Alternatively, the display panel is detachably provided to the front face of the front panel, for which the connecting part of the display panel and front panel include a hinge bar formed at a lower side of the front panel and a hinge ring protruding from a lower end of the display panel so as to be coupled with the hinge bar detachably.

Preferably, the display panel further includes a power control means for cutting off a power to the inner components when the display panel is separated from the front panel.

Preferably, the power control means includes a protrusion formed at a lower end of the display panel so as to be inserted in a hole formed at the front panel on loading a panel and a switch fixed to the front panel by a predetermined fixing member so as to supply a power by being contacted with the protrusion.

Alternatively, the air conditioner further includes a blow means installed at the main chassis so as to blow the heat-exchanged air into a room by being drawn inside or outside the main chassis.

Accordingly, the indoor unit of the air conditioner according to the present invention has a compact size as well as improves its exterior. Further, the air conditioner of the present invention could provide the user with much more and various information and allows the user to identify the information more easily.

It is ^' to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the

/ invention as claimed.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment (s) of the invention and together with the description serve to explain the principle of the invention. In the drawings:

FIG. .1 illustrates a perspective view of an indoor unit of a general separate type air conditioner;

FIG. 2 illustrates a perspective view of a disassembled indoor unit of an air conditioner according to the present invention;

FIGs. 3A and FIG. 3B illustrate cross-sectional views of an indoor unit of an air conditioner according to the present invention; FIGs. 4A and FIG. 4B illustrate perspective views of an indoor unit of an air conditioner according to the present invention;

FIGs. 5A and FIG. 5B illustrate cross-sectional and perspective views of a modification of a main chassis in an indoor unit of an air conditioner according to the present invention;

FIG. 6 illustrates a perspective view of a disassembled display panel driving means of an air conditioner according to the present invention; FIG. 7 illustrates a front view of a driving means assembly seen from a direction ^λA' in FIG. 6;

FIGs. 8A and 8B illustrate partially opened perspective views of an display panel driving means loaded on an air conditioner according to the present invention; FIGs. 9A and FIG. 9B illustrate partially opened and perspective views of an air conditioner from which an display panel is detached according to the present invention;

FIGs. 10A to IOC illustrate cross-sectional views of a power control means in part according to the present invention;

. FIGs. 11A and FIG. 11B illustrate partially open and perspective views of a blow means, of an air conditioner according to a first embodiment of the present invention; and

FIGs. 12A and FIG. 12B illustrate partially open and perspective views of a blow means of an air conditioner according to a second embodiment of the present invention.

DETAILED DESCRIPTION OF PREFFRED EMBODIMENT Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. FIG. 2 illustrates a perspective view of a disassembled indoor unit of an air conditioner according to the present invention. FIGs. 3A and 3B and FIGs.4A and 4B illustrate cross-sectional views and perspective views of an indoor unit of an air conditioner according to the present invention.

Air conditioners are divided in general into a one- body type air conditioner having all components built in one unit and a separate type air conditioner having all components built in outdoor and indoor units. In the following written description, the present invention explains embodiments applied to the separate type air conditioner. Besides, an outdoor unit of an air conditioner according to the present invention has the same constitution of a general outdoor unit, for which explanation is skipped in the following description.

Referring to FIG. 2 to FIG. 3B, an indoor unit of an air conditioner according to the present invention includes a main chassis 10, a heat exchanger 20 installed inside the main chassis 10, a blow fan 30 installed inside the in chassis 10, a front panel 40 installed in front of the main chassis 20, and an display panel 50 installed at a front face of the front panel 40.

First of all, the main chassis 10 is basically constituted so as to receive various components for the operation of the indoor unit. A blow outlet 14 is formed at a bottom of the main chassis 10 so as to blow an air having heat-exchanged on the indoor unit, and a blow assembly 60 is loaded on the blow outlet 14. The blow assembly 60 includes a vane, a louver, or the like so as to adjust a blow direction of the heat-exchanged air right and left as well as upward and downward. The blow outlet 14 and blow assembly 60, as shown . in FIG. 3A and FIG. -3B, enable to blow an air to a right lower area of the indoor unit, thereby preventing the interference between an intake airflow and a blown airflow through a front face of the indoor unit as well as being advantageous in cooling an area below the indoor unit. Moreover, the blow outlet 14 is formed at the bottom face of the indoor unit instead of the front face, thereby improving a front exterior of the indoor unit .

Moreover, the main chassis 10, as shown in FIG. 5A and 5B, can have a doubled structure including a front part 11 and a rear part 12 installed at a wall face of a room. The front and rear parts are interconnected, and the heat exchanger 20, blow fan 30 and the like are installed in a space between the front and rear parts 11 and 12. Specifically, the front part 11 is rectangular in figure, and the blow outlet 14 is formed at a bottom of the front part 11. Besides, the front part 11 can be built in one body of the front panel 40. The rear part 12 protrudes from a back face of the front part 11, and has upper/lower and right/left widths which are narrower than those of the front part 11. Hence, if the rear part 12 is hanged on the wall of the room, a user mainly sees the front part 11. Thus, it is recognized that an exterior of the indoor unit looks slim visually. Specifically, if a concave recess is formed at the room wall so as to correspond to the rear part 12, the indoor unit occupies a less space since the front part 11 protrudes out of the wall face of the room only. Moreover, the rear part 12 can be a member separable from the front part 11, or built in one body of the front part 12.

Besides, extra intake inlets 13a and 13b can be formed at upper faces of the front and rear parts 11 and 12 so as to improve an intake efficiency. In order to guide intake airflow smoothly, the intake inlets 13a and 13b may further include an intake grill.

The heat exchanger 20 exchanges heat with a room air sucked into the indoor unit through an operational fluid such as a refrigerant flowing inside the heat exchanger 20. The blow fan 30 is generally located in a rear of the heat exchanger 20, and revolves by a motor 31 so as to circulate the room air forcibly through the indoor unit. Namely, the blow fan 30 sucks the room air inside the indoor unit so that the heat exchanger 20 exchanges heat with the room air and discharges the heat-exchanged air outside the indoor unit. In this case, the heat exchanger 20, as shown in FIG. 3A, FIG. 3B, and FIG. 5A, has a properly bent shape so as to carry out the heat exchange on the entire room air sucked in through the intake inlets formed at the upper side of the indoor unit as well as at the front part of the indoor unit.

The front panel 40 basically seals a front face of the main chassis 10 so as to provide a space in which various components such as the heat exchanger 20, blow fan 30, and the like are installed together with the main chassis 10. A main intake inlet 41a is formed at a front face of the front panel 40 so as to make the room air sucked inside the heat exchanger 20. Besides, as shown in FIGs.2 to 4, an auxiliary intake inlet 41b can be formed at an upper side of the front panel 40 instead of the upper intake inlets 13a and 13b of the main chassis 10 shown in FIGs. 5A and 5B. Moreover, a recess portion 40a is formed at a front face of the front panel 40 for the display panel 50 so as to be recessed inside, and decoration panels 42a and 42b are installed at upper and lower sides of the recess portion 40a. The decoration panels include various colors and patterns so as to decorate the front face of the indoor unit, and make the front face of the indoor unit flat together with the display panel 50 so as to. improve an exterior of the air conditioner. The decoration panels 42a and 42b can be built in one. body of the front panel 40. Moreover, an electrostatic precipitator 45 and an air filter 47 are installed at the main intake inlet 41a so as to purify the intake air. Besides, the front panel 40, if necessary for design, can be built in one body of the main chassis 10.

The display panel 50 has a size enough to cover the main intake inlet 41a entirely and opens/closes the main intake inlet 41a selectively. For this, the display panel 50 is basically installed at the front panel 40 so as to move revolvably. Specifically, a lower end portion of the display panel 50 is hinge-connected to a lower front face of the front panel 40. The display panel 50 revolves centering around the lower end portion so as to open the main intake inlet 41a on operating the air conditioner or close the main intake inlet 41a on stopping the operation of the air conditioner. Compared to a general blow grill, the display panel 50 is made of a thin plane member so as to make the indoor unit compact overall. Besides, the planarized front face of the display panels improves the exterior of the indoor unit. And, the display panel 50 closes the main intake inlet 41a completely when the air conditioner -stops operating, thereby enabling to prevent penetration of the particles through the main intake inlet 41a. Moreover, the display panel 50 and front panel 40 are connected to each other through hinge, whereby the present invention enables to close/open the main intake inlet 41a with such a relatively simple structure.

As shown in FIGs. 2 to 5, the display panel 50 itself displays various information on its screen 51. As for the display panel, commercialized flat display panels, for example a liquid crystal panel or a plasma display panel may be used. On the display panel 50, an operation status of an air conditioner or specific picture information may be displayed for a user. Alternatively, the screen of the display panel 50 may be divided into sections to display both the operation status information and the picture information at the same time. A switching device for displaying alternatively each of the display modes (for example, operation status information only, picture information only or both of operation information and picture information) according to a user demand is provided so that the user can have these display modes displayed on the display panel 50 by controlling the switching device as he/she wishes.

The operation status information may include a current temperature, a desired temperature, an amount of airflow, and an operation mode. As described above, because the display panel 50 has a considerably large size which is corresponding to the front face of the air- conditioner, it can display relatively great amount of information more largely, compared to the prior art air- conditioner. Thus even in case that the indoor unit is hung high on the wall, the user can identify the information with ease.

The picture information may be either moving or stationary picture information. The moving picture information includes a movie, an airwave broadcasting, and the like and the stationary picture information includes a photograph, a painting, and the like. As shown in FIGs. 4A, 4B, and 5B, in order to display various picture information mentioned above, the display panel 50 further includes a picture signal provider 52 to be provided with a picture signal therein. Preferably, considering a better appearance, the picture signal provider 52 is provided inside the main chassis 10. More preferably, it is provided inside the main chassis 10 detachably so that it can be easily separated when being repaired or replaced.

Also, the picture signal provider 52 can use an external recording medium to provide the picture signal. In other words, a device which reproduces picture signals stored in optical recording mediums such as a CD-ROM, a MO disk, and a DVD-ROM can be used as the picture provider. Also, a device which reproduces a picture signal stored in magnetic recording mediums such as videotape and a magnetic disk can be used as the picture provider. With their large storing capacity, these optical and magnetic devices can be used in reproducing moving picture information as well as stationary picture information.

Alternatively, The picture signal provider 52 itself can provide the picture signal. For example, the picture signal provider 52 having a storing device such as- a memory can provide the display panel 50 with the picture signal stored in that storing device. Also, if the picture signal provider 52 has a tuner, it can display programs of satellite broadcasting, airwave broadcasting, or cable broadcasting.

Alternatively, the picture signal provider 52. can connect' the display panel to an external picture reproducing device. That is, the picture signal provider 52 can be connected to the external devices such as a video tape player (recorder) , a TV receiver, a DVD player, or a personal computer so as to provide the display panel 50 with the picture signal output from those devices. As described above, the display panel 50 enables the air-conditioner to have more various functions in addition to an air-conditioning function.

Meanwhile, when the display panel 50 becomes fully open, the main intake inlet 41a is exposed entirely so as to degrade the exterior of the indoor unit. Hence, the display panel 50, as shown in FIG. 3B and 4B, preferably revolves to a predetermined angle from the front panel 40. Namely, when the air conditioner operates, the display panel 50 maintains a uniform tilt angle for the front panel 40. Such a tilted display panel 50, as shown in FIG. 3B, is located between the main intake inlet 41a and blow outlet 14. Hence, the intake and blow flows through the intake inlet la and blow outlet 14 are substantially separated from each other as well as fail to interfere with each other. Moreover, as the indoor unit is placed at a high position on a wall surface as well as looked up by a user, the tilted display panel 50 enables to cover the open main .intake inlet 41a so as not to be seen. Moreover, the user enables to see the display unit 56 and the like installed at the display panel 50 more vividly.

In order to maintain the uniform tilt angle, the display panel 50 further includes a driving means 70 supporting the display panel 50 ^■ and simultaneously restricting revolution of the display panel 50. Various mechanisms can be used as the driving means 70, and a link mechanism is applied to an embodiment of the present invention. As an overall length of the link is limited even if the link mechanism is fully unfolded, such a link driving means 70 permits a revolution of the display panel as long as the limited link length. Besides, when the display panel reaches its maximum revolution, the link driving means 70 supports (restricts) the display panel 50 so as not to revolve any more. The driving means 70, as shown in FIG. 2, FIG. 6, and FIG. 7, includes a first link 71 connected to the front panel 40 and a second link 72 connecting the first link 71 to the display panel 50.

In this case, the first link 71 includes a first end portion 71a connected to the front panel 40 revolvably and a second end portion 71b connected to the second link 72 reevolvably so as to confront the first end portion 71a. And, the second link 72 includes a first end portion 72a connected to the second end portion 71b of the first link 71 and a second end portion 72b connected to the display panel 50 revolvably. Specifically, a connecting unit of the first and second links 71 and 72, as shown in FIG. 6, Fig. 7, and FIG. 8A, includes a hinge hole 7Id formed at the second end portion 71b of the first link 71 and a hinge pin 72c formed at the first end portion 72a of the second link 72 so as to be inserted in the hinge hole 71d. In such a connecting unit, the hinge pin 72 is pulled out of or inserted in the hinge hole 71d, whereby the first and second links 71 and 72 can be disassembled from each other with ease. Namely, the simply structured connecting unit enables the display panel 50 to be repaired or replaced easily. On the contrary, the hinge hole and pin can be formed at the second and first links 72 and 71, respectively. Moreover, the other connecting unit of the second link 71 and display panel 50, as shown in FIG. 8B, includes a bracket 57 formed at the rear face of the display panel 50 so as to include the hinge hole 57a, another hinge hole 72d formed at the second end portion 72b of the second link 72, and another hinge pin 58 inserted into both of the bracket and the hinge holes 55a and 72d of the second link. As similar to the first and second link connecting unit, the display panel 50 and second link 72 can be easily disassembled by removing the hinge pin 58 so as to enable their easy repair and replacement.

The user can operate the display panel 50 together with the above-described driving means 70. Yet, it is preferable that the display panel 70 revolves automatically for user's sake of convenience. For this, the driving means 70 further includes a motor 73 giving a driving force to the first and second links 71 and 72. Specifically, a shaft of the motor 73, as shown in FIG. 8A and 8B, is inserted in a hole 71c of the first end portion 71a so that the motor 73 is connected to the first link to be inter-driven with the first link. Moreover, the motor 73 is preferably a step motor so as to control revolution of the first link 71 step by step. Hence, as the revolution and tilt angle of the display panel 50 are adjusted to change an interval between the display panel 50 and main intake inlet 41a, whereby intake airflow through the main intake inlet 41a is adjusted. If the motor 73 is installed, a space between the display panel 50 and front panel 40 is limited. Hence, the motor 73, as shown in FIG. 8A and FIG. 8B, is preferably installed at the rear face of the front panel 40 and the first link 71 is connected to the motor 73 through an opening 43 formed at the front panel 40. Such an installment structure prevents the motor 73 from being exposed when the main intake inlet 41a becomes open, thereby improving the exterior or appearance of the air conditioner. It is advantageous that the opening 43 extends long upper to lower side, whereby the first and second links 71 and 72 can move smoothly. Yet, a size of the opening 43 increases so that a finger or other member can be inserted therein. Preferably, the front panel 40 further includes a partition 48 around the opening 43. The partition 48, as shown in FIG. 8A and FIG. 8B, extends from a circumference of the opening 43 toward a rear side of the front panel 40. Moreover, the partition 48 may extend from the circumference of the opening 43 in a direction vertical to the front face of the front panel 50. Yet, it is more advantageous that the partition 43 is formed to be inclined inward the opening 43 so as to reduce the size of the opening 43. Hence, it is prevented that the partition 48 approaches the components built in the indoor unit, whereby the user fails to receive an electric shock due to a contact between finger/external member and the component. Besides, malfunction of the components is prevented.

Moreover, the first and second links 71 and 72 having the above-explained simple connecting unit may be disassembled during operation. Hence, the driving unit preferably further includes auxiliary connecting members formed at the connecting unit of the first and second ^■ links 71 and 72. First of all, one of the auxiliary connecting members, as shown in FIG. 6 and FIG. 7, is a guide 74 formed at the second link 72. The guide 74 includes a horizontal member 74a extending from the first end portion 72a of the second link 72 along the second end portion 71b of the first link 71 and a vertical member 74b extending from the horizontal member 74a so as to cover a side face of the second end portion 71b. Namely, the guide 74 surrounds partially the second end portion 71b overall so as to prevent the second end portion 71b from deviating from the first end portion 72a of the second link 72. The guide 74 may be formed at the second end portion 71b of the first link 71 with the same shape. Moreover, the auxiliary connecting member, as shown in the drawing, may include a boss 75a formed near the second end portion 71b of the first link 71 and a coupling member 75b coupled with the boss 75a. As shown in detail in FIG. 7, the coupling member 75b 'is coupled with the boss 75a so as to gear into or contact with the first end portion 72a of the second link 72. Hence, the first end portion 72a is not separated from the second end portion 71b in a rotational

' shaft direction during operation. And,' the boss 75a, as is the case with the guide 74, can be formed near the first end portion 72a of the second link 72 instead of the second end portion 71b.

Finally, the driving means 70, as shown in FIG. 6 and FIG. 7, may further include a stopper 76 formed at the connecting unit of the first and second links 71 and 72. The connecting unit of the first and second links 71 and 72 allows the first and second links 71 and 72 to revolve freely, whereby the first and second links 71 and 72 revolve relatively only but the display panel 50 may revolve no more. This phenomenon may occur possibly if a little external force is applied to the display panel 50 during revolution. Hence, the stopper 74 protrudes from the second end portion 71b of the first link 71, as shown in FIG. 8B, whereby the second link 72 is caught on the stopper 74 during revolution so as to restrict the relative revolution of the second link 72 for the first link 71. Specifically, the stopper 76 substantially maintains the angle between the first and second links 71 and 72 so as to be smaller than 180°. Therefore, the stopper 76 secures the stable revolution of the display panel 50.

Particles such as dust and the like are generally accumulated from the sucked air inside the air conditioner having been used for a predetermined time. For user's health, inner components such as the air filter 47 and the like need to be cleaned. For easy cleaning, the display panel 50 is preferably detachable from the front panel 40. For this, a loading unit of the intake and front panels 50 and 40, as shown in FIG. 2, FIG. 3A, FIG. 3B, and FIG. 5A, includes a hinge bar 44b formed at a lower part of the front panel 50 and a hinge ring 53 protruding at a lower end of the display panel 50. In this case, the hinge bar 44b is installed in a groove having a predetermined size for smooth revolution of the hinge ring 53. And, the hinge ring 53 has a partially open shape 53a so as to be detachable from the hinge bar 44b. With such a structure of the loading unit, the display panel 50, as shown in FIG. 9A and FIG. 9B, is easily separated from the front panel 40 so as to expose the main intake inlet 41a entirely. Hence, the air filter 47 is separated so as to be cleaned. Moreover, the separated display panel 50 is hung on the front panel 40 by the driving means, i.e. the first and second links 71 and 72, thereby the display panel 50 can be reloaded with ease.

Since the inner component driven by high voltage such as the electrostatic precipitator 45 adjacent to the air filter 47 is exposed while the air filter 47 is disassembled, the user may receive an electric shock. For user' s safety, the display panel 50 further includes a power control unit cutting off a power of the inner component when the display panel 50 is disassembled. The power control unit, as shown in FIG. 2 and FIGs. 10A to 10C, includes a protrusion 54 formed at a lower end of the display panel 50 and a power switch 100 fixed inside the front panel 40 through a predetermined fixing member. In this case, the protrusion 46, when the display panel 50 is loaded on the front panel 40, is inserted in a penetrating hole 46 formed at the front panel 40 so as to reach an lower inside of the front panel 40. And, a lower face of the protrusion 54 is formed to have a curved shape so as to come into contact smoothly with the switch 100 continuously while the display panel 50 revolves. The switch 100 is a kind of relay switch connected between the inner components and power supply, and includes a body 110 and a terminal 120 connected to the body 110 and having elasticity. Specifically, one end of the terminal 120 is connected to the body 110, and the other end comes into contact with the body 110 when being pressurized. Electrical contact points 111 and 121 are installed at the body 110 and the other end of the terminal 120, respectively. When the other end of the terminal 120 is contacted with the body 110, the contact points 111 and 121 are connected to each other. Moreover, the switch 100 is fixed stably by a hook 49a formed inside the front panel 40 adjacent to the penetrating hole 46 and ribs 49b located in rear of the switch. The hook 49a provides a recessed part in which the switch is inserted, and the ribs 49b support the switch 100 pressurized by the protrusion 54 so as not to be pushed.

In the above power control means, when the display panel 50 is - loaded, the protrusion 54, as shown in FIG. 10A, pressurizes the terminal 120. As the other end of the terminal 120 is contacted with the body 110, the contact

^• points 111 and 121 are connected to each other so as to

' supply the inner components with power. Since the protrusion 54 maintains to be contacted with the terminal

120 while the display panel 50 revolves, as shown in FIG. 10B, the supply of the power is kept on. Meanwhile, if- the display panel 50 is detached, the protrusion 54, as shown in FIG. IOC, is separated from the penetrating hole 46 so as to release the terminal 120. Hence, the terminal 120 restored by its own elasticity to separate the contact points 111 and 121 from each other so as to cut off the power supply to the inner components.

Meanwhile, the blow outlet 14 is formed at the bottom of the indoor unit for improving the exterior and cooling a lower area right under the indoor unit. Yet, such a blow outlet 14 is not suitable for blowing a chill air into the entire room evenly. In order to provide an even cooling, the indoor unit according to the present invention further includes blow means 80 and 90 inserted inside or drawn out from the main chassis 10 so as to blow the heat-exchanged air into the room.

The blow means 80 according to a first embodiment, as shown in FIG. 11A, is drawn in or out along the blow outlet 14 upward and downward so as to open/close the blow outlet 14 selectively. For this, a blow housing 81 is installed inside the main chassis 10 so as to move upward and downward along the blow outlet 14. The blow housing 81 is drawn outside in part through the blow outlet 14 in accordance with a degree of the descent. And, an auxiliary intake inlet 81a through which the heat-exchanged air is sucked in and an auxiliary blow outlet 81b connected to the room are formed at the blow housing 81.

The blow housing 81 has a rectangular shape of which right/left width is longer than a front/rear width, and the auxiliary blow outlets 81a and 81b are formed at an upper face and a lower front face of the blow housing, respectively. Once the blow housing 81 is lifted upward so as to be completely inserted inside the main chassis 10, the blow outlet 14 is closed by the blow housing 81. When the blow housing 81 is moved downward for some distance so as to draw out the auxiliary outlet 81b outside, the blow outlet 14 becomes open.

In this case, a member controlling a blow direction of an air is preferably installed inside the blow housing 81. For this, a vane 83 controlling the blow direction of the air upward and downward and a louver 84 controlling the blow direction of the air right and left are installed inside the blow housing 81. Preferably, an auxiliary intake grill 82 is formed at the auxiliary intake inlet 81a so as to guide a smooth airflow.

Meanwhile, the blow housing 81 can be lifted by a direct user's operation. Instead, it is preferable that the blow housing 81 is lifted automatically in accordance with the operation of the air conditioner. For this, a driving means for elevating the blow housing 81 automatically is further installed.

The driving means includes a motor 85 receiving a power to generate a turning force, a pinion 86 connected to a driving shaft of the motor 85, and a rack 87 installed at a rear wall of the blow housing 81 in upper/lower direction so as to gear into the pinion 86. In the drawing, it is shown that the driving means is installed in rear of the blow housing 81. Instead, it is preferable that the driving means is installed at a lateral side of the blow housing 81.

In order to prevent the blow housing from being separated from the main chassis 10 completely, a stopper 88 is installed at a front wall of the blow housing 81. Once the blow housing 81 is moved downward with a predetermined distance, the stopper 88 is caught on the bottom of the main chassis 10 so as to fail to move downward no more . Moreover, a second embodiment 90 of the blow means, as shown in FIG. 12A, revolves to move inside the blow inlet 14 so as to close/open the blow outlet 14 selectively. For this, a blow housing 91 having a revolution center near the blow outlet 14 is installed at the bottom face of the main chassis 10 so as to revolve to move to be drawn outside through the blow outlet 14. In this case, an auxiliary intake inlet 91a through which the heat-exchanged air is sucked in and an auxiliary blow outlet 91b connected to the room are formed at the blow housing 91.

The blow housing 91 has a fan-shape cross-section, and the auxiliary intake inlet 91a and auxiliary blow outlet 91b are formed at an upper face and a lower circumferential face of the blow housing 91, respectively. In this case, a rotating shaft 96 of the blow housing 91 is formed near a vertex of the fan-shape cross-section. If the blow housing 91 revolves clockwise centering around the rotating shaft 96 so as to be inserted inside the main chassis 10 completely, the blow outlet 14 is closed by the blow housing 91. On the contrary, if the blow housing 91 revolves counterclockwise so as to draw out the auxiliary blow outlet 91b outside, the blow outlet 14 becomes open. Namely, the inner space of the main chassis 10 leads to the room through the auxiliary intake inlet 91a and auxiliary blow outlet 91b.

A vane 93 adjusting a blow direction of the heat- exchanged air upward and downward and a louver 94 adjusting the blow direction right and left are installed inside the blow housing 91. And, an auxiliary intake grill 92 is further installed at the auxiliary intake inlet 91a so as to guide airflow more smoothly.

And, a stopper 97 is installed at an upper circumferential face of the blow housing 91 so as to restrict a revolution angle of the blow housing 91. Once the blow housing 91 revolves with a predetermined degree, the stopper 97 is caught on a lower face of the main chassis 10 so that the blow housing is unable to revolve any more. Meanwhile, it is preferable that the blow housing 91 revolves to move automatically in accordance with the operation of the air conditioner as well. For this, a driving means revolving the blow housing 91 automatically i-s further installed at the blow means 90. The driving means is a motor 95 generating a turning force by ■ receiving a power, and a driving shaft of the motor 95 is directly connected to the rotating, shaft 96 of the blow housing 91.

Operation of the above-constituted air conditioner according to the present invention is explained by referring to the relating drawings as follows.

First of all, once the air conditioner is actuated, as shown in FIG. 8A and FIG. 8B, the first link 71 starts to revolve by the motor 73 toward a front side of the indoor unit as well as the second link 72 follows the first link 71 to revolve. During the revolution of the first and second links 71 and 72, if the stopper 76 is formed at the first link 71, the stopper 76, as shown in Fig. 8B, is caught on the second link 72 so that the second link 72 is restricted by the first link 71. The first and second links 71 and 72 then push the second link 72 toward the display panel 72 without reciprocal revolution between the first and second links 71 and 72, thereby securing the stable revolution of the display panel 50. Moreover, the auxiliary connecting members 74 and 75 maintain the connected state of the first and second links 71 and 72 for the revolution of the display panel. By the operation of the driving means 71 to 76, the display panel 62, as shown in FIG. 3B and FIG. 4B, keeps on revolving continuously centering around its lower end and is arranged to incline to the front panel 40 with a predetermined angle so as to open the main intake inlet 41a of the front panel 40. Simultaneously, in the first embodiment 80 of the blow means, the blow housing 81 descends by reciprocal reaction between the pinion 86 and rack 87 when a power is applied to the motor 85, which is shown in FIG. 11B. Hence, the descent of the blow housing 81 makes the blow outlet 14 open. Namely, the inner space of the main chassis 10 leads to the room through the auxiliary intake inlet 81a and auxiliary blow outlet 81b.

Moreover, in the second embodiment 90 of the blow means, a power is applied to the motor 95 so as to revolve the blow housing 91 the moment the display panel 50 revolves, which is shown in FIG. 12B. Hence, the revolution of the blow housing 91 makes the blow outlet 14 open. Once the main intake inlet 41a and blow outlet 14 become open, the blow fan 30 starts to revolve by the fan motor 31 so that the room air is sucked inside the indoor unit through the main and auxiliary intake inlets 41a and 41b. During such an intake process, the display panel 50 opens the main intake inlet 41a overall so as to suck in air more than the blow grill of the related art do. Moreover, the tilt angle of the display panel 50 is adjusted so as to control the interval between the display panel 50 and front panel. Such an interval control enables to control the air blow amount as well as the air intake amount. The intake air passes the air filter 47 so as to remove large particles, and then passes the electrostatic precipitator 45 so as to precipitate minute particles such as dust and the like. Subsequently, the air passes the heat exchanger 20 for heat exchange with the refrigerant so as to be cooled, and then moves toward the blow outlet 14.

• Thereafter, the cooled air, as shown in FIG. 11A or FIG. 12A, flows inside the blow housing 81 or 91 through the auxiliary intake inlet 81a or 81b. The cooled air is then guided by the vane 83 or 93 and louver 84 or 94 so as to be blown into the room through the auxiliary blow outlet 81b or 91b. During such a blow process, the display panel 50 is tilted between the main intake inlet 41a and auxiliary blow outlet 81b or 91b so as to work as the partition dividing the space therebetween. Hence, the interference between the intake and blow is excluded so as to prevent the blow air fails to be sucked in through the main intake inlet 41a again. Moreover, since the blow housing 81 or 91 is drawn out from the main chassis 10 downwardly, the cooled air can be blown into the entire area of the room evenly as well as the area under the indoor unit. Once the air conditioner stops operating after having operated for a predetermined time, the fan motor 31, blow fan 31, and heat exchanger 20 stop operating. Thereafter, the display panel 50 and blow housing 81 or 91, as shown in FIG. 3A and FIG. 3B, operate in order reverse to the foregoing explanation so as to close the main intake inlet 41a and blow outlet 14.

The display panel 50 selectively displays certain information by a control of the switching device even when the air-conditioner is not in operation. If the user selects a display mode for displaying an operation status, a . controller inside the indoor unit transmits the operation status information to the display panel 50, and thus the information is displayed on the display panel 50. The operation status information is updated by the controller in real time manner as the operation status changes, and then displayed on the display panel 50. As described before, the operation status information may include a current room temperature, a desired temperature, and an operation mode, and especially the current room temperature is useful for the user even though it is displayed when the air-conditioner is not in operation. Since the operation status information is displayed on a large-sized display panel 50, a great amount of information could be shown more largely, and thus could be identified by the user more easily.

If the user selects a display mode for displaying picture information, the display panel 50 is provided with a stationary picture signal or a moving picture signal from the picture signal provider 52 in order to display it thereon. The stationary picture may be a photo, or a painting, or the like, and thus the indoor unit acts as an interior decoration, that is a frame for photograph or painting. Also the moving picture may be a movie or an airwave broadcasting program. At this instance, the air- conditioner serves as a display device (display panel 50) similar to a TV receiver or serves as a reproducing device (picture signal provider 52) similar to a video tape player. Further, the display panel 50 could be rotated by the driving means 70 to be inclined at a predetermined angle to the front panel 40, and this inclination angle could be adjusted arbitrarily. With the display panel 50 of which, tilt angle is appropriately adjusted, the operation status information or picture information is shown better to the user.

Referring to FIG. 9A and FIG. 9B, when a user turns the display panel 50 a little bit and then lifts the display panel 50 upward, the hinge ring 53 at the lower end of the display panel 50 is separated from the hinge bar 44b by its opening portion 53a. Thus, the display panel 50 is separated from the front panel 50 with ease.

Once the display panel 50 is laid down to be hung through the first and second links 71 and 72 so as to be positioned under the front panel 56, the main intake inlet 41a is fully opened. When the main intake inlet 41a is open, the second link 71 is caught on the stopper 76 so as to revolve no more than 180° for the first link 71. And, the display panel 50, as shown in the drawing, is hung so as to be left apart with a predetermined interval from the lower portion of the front panel 40. Hence, the display panel 50 is free from causing damage on the lower portion of the front panel 40 when being attached to or detached from. Moreover, the moment the display panel 50 is separated, as shown in FIG. 10C, the protrusion 54 is detached from the penetrating hole 46 so that the contact points 111 and 121 are separated from each other. The power supply becomes cut off to the inner components, whereby the user is protected from an electric shock.

Therefore, the user separates the display panel 50, thereby enabling to disassemble conveniently the inner components such as air filter 47, electrostatic precipitator 45, and the like through the fully opened main intake inlet 41a for cleaning and replacement. Moreover, since the separated display panel 50 is hung on the indoor unit, the user enables to reload the display panel 50 conveniently after loading the inner components 45 and 47.

Accordingly, the present invention has the following effects or advantages.

The present invention uses a flat panel type display panel instead of the blow grill of the related art, thereby providing a compact size of the indoor unit as well as improving the exterior. And, the display panel closes the intake inlet on stopping operation, thereby preventing particles from flowing inside the air conditioner. Moreover, since the display panel inclines to the front panel in operation, the intake inlet fails to be exposed to a user so as to improve the exterior of the indoor unit. And, the tilted front panel excludes the interference between the intake and blow airflows, thereby improving heat exchange efficiency. Besides, the tilt angle of the display panel is adjusted so as to control intake and blow air amounts.

Since the display panel is detachable, it is easy to manage the inner components such as the air filter, electrostatic' precipitator, and the like. Since the display panel is dangled from the indoor unit, the user enables to reload the display panel conveniently.

Besides, the present invention includes the blow means drawn out from the bottom of the indoor unit, thereby enabling to blow the chill air to all over the room evenly as well as the area right under the indoor unit .

Lastly, whether the air conditioner is in operation or not, the relatively large display panel shows operation status information or picture information so that much more and various information is primarily provided to the user. More specifically, when the operation status is displayed, as the user can identify the displayed information more easily, the user can use the air conditioner more conveniently. Furthermore, when the stationary or moving picture information is displayed, the indoor unit performs multiplex functions as an interior decoration or a device for displaying and reproducing a picture. Thus, the air-conditioner of the present invention can satisfy various needs of the user.

It will be apparent to those skilled in the art than various modifications and variations can be made in the present invention. Thus, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents .

Claims

What is claimed is :

1. An air conditioner comprising: a main chassis for receiving various components; a heat exchanger being installed inside the main chassis to exchange heat with room air; a blow fan being installed inside the main chassis to suck in and blow out the room air; a front panel being attached to a front part of the main chassis and having an intake inlet at its front face to make air flowed into the heat exchanger; and a display panel being installed on the front face of the front panel revolvably so as to selectively open/close the intake inlet, and displaying various information thereon.

2. The air conditioner of claim 1, wherein a lower end of the display panel is mounted on a lower portion of the front panel revolvably.

3. The air conditioner of claim 1, wherein the display panel comprises a liquid crystal panel or ^■ a plasma display panel.

4. The air conditioner of claim 3, wherein the display ' panel displays information regarding an operation status of the air-conditioner.

5. The air conditioner of claim 4, wherein the operation status information includes a current room temperature, a desired temperature, and an amount of airflow

6. The air conditioner of claim 3, wherein the display panel displays specific picture information.

7. The air conditioner of claim 6, wherein the display panel includes a picture signal provider for providing picture signals to the display panel.

8. The air conditioner of claim 7, wherein the picture signal provider reproduces a picture signal recorded in an optical recording medium.

9. The air conditioner of claim 7, wherein the picture signal provider reproduces a picture signal recorded in a magnetic recording medium.

10. The air conditioner of claim 7, wherein the picture signal provider connects an external picture reproducing device to the display panel.

11. The air conditioner of claim 7, wherein the picture signal provider either stores a predetermined amount of picture information in itself or receives a broadcasting signal from the outside.

12. The air conditioner of claim 7, wherein the picture signal provider is detachably provided inside the main chassis .

13. The air conditioner of claim 1, wherein the display panel in operation maintains a predetermined tilt angle for the front panel.

14. The air conditioner of claim 13, wherein the display panel has a driving means for revolving it within a limited range in operation.

15. The air conditioner of claim 14, wherein the driving means includes: a first link with a first end being connected to the front panel in a revolvable way; and a second link having a first end being connected revolvably to a second end of the first link which is opposite to the first end of the first link, and a second end being connected revolvably to the display panel.

16. The air conditioner of claim 15, wherein the driving means further includes a motor being connected to the first end of the first link to revolve the first link automatically.

17. The air conditioner of claim 16, wherein the motor is a step motor that controls a revolution degree of the first link by stages.

18. The air conditioner of claim 1, wherein the display panel is detachably provided on the front face of the front panel.

18. The air conditioner of claim 18, wherein a connecting part of the display panel and the front panel includes: a hinge bar being formed on the lower part of the front panel; a hinge ring protruding from the display panel and being detachably combined with the hinge bar.

19. The air conditioner of claim 18, wherein the display panel further includes a power control means for cutting off a power to inner components when the display panel is separated from the front panel.

20. The air conditioner of claim 20, wherein the power control means includes: a protrusion being formed on the lower part of the display panel and inserted into a hole on the front panel when the panel is loaded; a switch being fixed inside the panel by a fixing member and come in contact with the protrusion to supply a power.

21. The air conditioner of claim 1, wherein the air- conditioner further comprises a blow means being provided inside the main chassis for blowing out heat-exchanged air to a room, with being drawn out of the main chassis and drawn therein.

21. The air conditioner of claim 1, wherein the main chassis includes a blow outlet formed on a bottom face thereof.

22. The air conditioner of claim 1, wherein the main chassis further includes: a front part; and a rear part being installed on a wall of a room and communicating with the front part.