(19)
(11)EP 2 629 021 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
06.05.2020 Bulletin 2020/19

(21)Application number: 13154623.6

(22)Date of filing:  08.02.2013
(51)Int. Cl.: 
F24F 1/00  (2019.01)
F24F 13/24  (2006.01)

(54)

Indoor unit

Innenraumeinheit

Unité intérieure


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30)Priority: 15.02.2012 KR 20120015298

(43)Date of publication of application:
21.08.2013 Bulletin 2013/34

(73)Proprietor: LG Electronics Inc.
Seoul 150-721 (KR)

(72)Inventors:
  • Kim, Kidong
    153-023 Seoul (KR)
  • Lee, Yungkoo
    153-023 Seoul (KR)
  • Moon, Dongsoo
    153-023 Seoul (KR)
  • Lee, Jungwoo
    153-023 Seoul (KR)

(74)Representative: Vossius & Partner Patentanwälte Rechtsanwälte mbB 
Siebertstrasse 3
81675 München
81675 München (DE)


(56)References cited: : 
CN-Y- 201 265 540
JP-A- H09 105 395
DE-A1-102008 008 300
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description


    [0001] The present invention relates to an indoor unit, and more particularly, to an indoor unit with a non-inclining or non-drooping fan therein.

    [0002] In general, air conditioners are apparatuses that include a compressor, an outdoor unit with an outdoor heat exchanger, an expansion valve, and an indoor unit with an indoor heat exchanger, and cool or heat an indoor, using a cooling cycle. That is, the air conditioners can be composed of a cooler that cools an interior and a heater that heats the interior. Further, the air conditioners may be implemented by a compatible air conditioner for cooling and heating which cools or heats an interior.

    [0003] The indoor unit of the air conditioners is equipped with a fan disposed in an indoor and blowing the indoor air. Indoor units are recently made in frame types with various demands in design in some cases and the fans of the indoor units are arranged with the rotational center horizontal. When the fans with the rotational centers horizontal incline or droop, they reach the case or the chassis of the indoor units, which causes noise and breakdown.

    [0004] JP H09 105395 A discloses using magnets between a frame body of a fan and a support means to support the fan, in order to maintain gaps between the frame body and the support means.

    [0005] The present invention has been made in an effort to provide an indoor unit with a non-inclining or non-drooping fan therein.

    [0006] The objects of the present invention are not limited to those described above and other objects may be made apparent to those skilled in the art from claims.

    [0007] In order to achieve these objects, there is provided an indoor unit according to claim 1.

    [0008] Alternatively, a plurality of the first magnets is disposed at regular intervals at the fan base. One side of each of the blades maybe connected with the fan base.

    [0009] The hub maybe integrally formed with the fan base.

    [0010] The indoor unit may further comprise a second magnet disposed at the base, opposite the first base, and having magnetism.

    [0011] The second magnet possibly prevents the fan from inclining or drooping by applying a magnetic force with the first magnet.

    [0012] The details of other exemplary embodiments are included in the following detailed description and the accompanying drawings.

    FIG. 1 is an exploded perspective view of an indoor unit according to an exemplary embodiment of the present invention.

    FIG. 2 is a perspective view of a fan in the indoor unit according to an exemplary embodiment of the present invention.

    FIG. 3 is an enlarged view showing the structure of a portion of the indoor unit according to an exemplary embodiment of the present invention.



    [0013] The advantages and features of the present invention, and methods of achieving them will be clear by referring to the exemplary embodiments that will be describe hereafter in detail with reference to the accompanying drawings. However, the present invention is not limited to the exemplary embodiments described hereafter and may be implemented in various ways, and the exemplary embodiments are provided to complete the description of the present invention and let those skilled in the art completely know the scope of the present invention and the present invention is defined by claims. Like reference numerals indicate like components throughout the specification.

    [0014] Hereinafter, the present invention will be described with reference to the drawings illustrating an indoor unit according to exemplary embodiments of the present invention.

    [0015] FIG. 1 is an exploded perspective view of an indoor unit according to an exemplary embodiment of the present invention.

    [0016] An indoor unit according to an exemplary embodiment of the present invention includes a base 12 fixed to a wall in an indoor, a fan 200 disposed on the base 12 and blowing the indoor air, an orifice 13 disposed ahead of the fan 200 and guiding the indoor air to the fan 200, a heat exchanger 50 disposed ahead of the orifice 13 and allowing the indoor air to exchange heat with a refrigerant, a front panel 20 disposed ahead of the heat exchanger 50, and a frame panel 30 disposed on the front of the front panel 20 at a predetermined distance from the front panel 20.

    [0017] The front panel 20 has an intake port 15 at the center through which the indoor air is sucked. The front panel 20 is fixed to the base 12.

    [0018] The frame panel 30 is disposed at a predetermined distance ahead of the front panel 20 with a gap therebetween. The indoor air is sucked to the intake port 15 through the gap between the front panel 20 and the frame panel 30.

    [0019] The base 12 is fixed to an indoor wall by a bracket 17 on the rear. Both sides of the base surround the fan 200. A discharge port 16 guiding the indoor air blown by the fan 200 to the outside is formed at both sides of the base 12. A vane 48 is disposed at the discharge port 16 to open/close the discharge port 16.

    [0020] Air guides 18 that guides the indoor air discharged through the fan 200 to the discharge ports 16 at both sides of the base 12 are disposed at the upper portions in the base 12.

    [0021] The base 12 is combined with the orifice 13 and the front panel 20. A motor 400 is disposed at the center of the base 12. The motor 400 rotates the fan 200.

    [0022] The orifice 13 is disposed ahead of the fan 200. A circular flow hole 13b through which the air sucked to the intake port 15 of the front panel 20 is guided to the fan 200 is formed at the orifice 13. An electric mount 150 with circuits such as electronic devices are disposed above the orifice 13.

    [0023] The fan 200 is disposed between the base 12 and the orifice 13 and blows the air sucked through the flow hole 13b to the discharge ports 16. The fan 200 is arranged with the rotational center horizontal. In the exemplary embodiment, the fan 200 is a centrifugal fan that circumferentially discharges indoor air flowing inside through the orifice 13.

    [0024] The heat exchanger 50 is disposed between the front panel 20 and the orifice 13. The heat exchanger 50 allows the indoor air sucked through the intake port 15 of the front panel 20 to exchange heat with a refrigerant. The indoor air with heat exchanged through the heat exchanger 50 flows to the fan 200 through the flow hole 13b of the orifice 13.

    [0025] The heat exchanger 50 is fixed to the front panel 20 or the orifice 13 and has a connection pipe 52 at one side for connection with a refrigerant pipe (not shown) disposed from the outside. A drain fan 100 is disposed under the heat exchanger 50 and stores and discharges condensed water produced by the heat exchanger 50.

    [0026] FIG. 2 is a perspective view of a fan in the indoor unit according to an exemplary embodiment of the present invention.

    [0027] The fan 200 according to an exemplary embodiment of the present invention has a ring-shaped rim 210, a hub 220 disposed at the center of the rim 210, a plurality of blades 230 disposed around the hub 220, and a disc-shaped fan base 240 connecting the hub 220 with the blades 230.

    [0028] The hub 220 is connected with the motor 400, forming the center of the fan 200. The blades 230 are disposed around the hub 220. The outer ends of the blades 230 are connected with the rim 210. One side of each of the blades 230 is connected with the fan base 240.

    [0029] The hub 220 is disposed at the center of the fan base 240. The hub 220 may be integrally formed with the fan base 240, depending on exemplary embodiments. The disc-shaped fan base 240 is spaced from the rim 210 and the blades 230 are disposed between the fan base 240 and the rim 210.

    [0030] FIG. 3 is an enlarged view showing the structure of a portion of the indoor unit according to an exemplary embodiment of the present invention.

    [0031] The indoor unit according to an exemplary embodiment of the present invention includes a first magnet 320 disposed in the fan 200 and having magnetism and a second magnet 310 disposed opposite the first magnet 320 and having magnetism.

    [0032] The first magnet 320 applies a magnetic force with the second magnet 310. Preferably, the first magnet 320 applies a repulsive force with the second magnet 310. The first magnet 320 is disposed in the rim 210 of the fan 200. The first magnet 320 may be formed in a ring shape, corresponding to the ring-shaped rim 210, or may be composed of a plurality of magnets disposed at regular intervals along the rim 210.

    [0033] The first magnet 320 may be disposed in the fan base 240, depending on exemplary embodiments. In this case, the first magnet 320 may have a ring shape or a disc shape or may be composed of a plurality of magnets disposed at regular intervals in the fan base 240.

    [0034] The first magnet 310 is disposed in the base 12 or the orifice 13. The second magnet is disposed in the orifice 13 in the exemplary embodiment. It is preferable that the second magnet 310 is formed in a ring shape and disposed around the flow hole 13b of the orifice 13.

    [0035] It is preferable that a ring-shaped orifice guide 13a is formed around the flow hole 13b and the second magnet 31 is disposed in the orifice guide 13a. The second magnet 310 may be composed of a plurality of magnets disposed at regular intervals along the ring-shaped orifice guide 13a, depending on exemplary embodiments.

    [0036] The second magnet 310 may be disposed at the base 12. In this case, the first magnet 320 is disposed at the fan base 240 and the second magnet 310 is disposed at the base 12, opposite the first magnet 320. The second magnet 310 may have a ring shape or a disc shape or may be composed of a plurality of magnets disposed at regular intervals in the base 12.

    [0037] A repulsive force is exerted between the first magnet 320 and the second magnet 310, such that the fan 200 is prevented from inclining or drooping.

    [0038] The operation of the indoor unit with the configuration described above according to an exemplary embodiment of the present invention is described as follows.

    [0039] As the motor 400 rotates the fan 200, the indoor air is sucked to the intake port 15 through the gap between the front panel 20 and the frame panel 30. The indoor air sucked to the intake port 15 exchanges heat with a refrigerant through the heat exchanger 50 and flows to the fan 200 through the flow hole 13b of the orifice 13. The indoor air flowing to the fan 200 is discharged to the indoor through the discharge port 16.

    [0040] The fan 200 is prevented from inclining or drooping regardless of whether it rotates, by the magnetic force exerted between the first magnet 320 and the second magnet 310 in the base 12 or the orifice. Therefore, the fan 200 is prevented from reaching the orifice 13 or the base 12.

    [0041] Although exemplary embodiments of the present invention are illustrated and described above, the present invention is not limited to the specific exemplary embodiments and may be modified in various ways by those skilled in the art without departing from the scope of the present invention described in the appended claims.

    [0042] According to an indoor unit according to an exemplary embodiment of the present invention, one or more effects can be achieved as follows.

    [0043] First, there is the advantage that noise and breakdown are prevented, as the fan is prevented from inclining or drooping by magnets.

    [0044] Second, there is the advantage too that the fan does not incline or droop by making the magnets in ring shapes such that the magnetic force does not tend to one side.

    [0045] Third, there is the advantage too that the indoor unit can be used for the existing products, because permanent magnets are used with a change in the existing outdoor units.

    [0046] The effects of the present invention are not limited to those described above and other effects may be made apparent to those skilled in the art from claims.


    Claims

    1. An indoor unit comprising:

    a base (12) fixed to an indoor wall;

    a fan (200) disposed on the base (12) and blowing air;

    an orifice (13) disposed ahead of the fan (200) and guiding air to the fan (200);

    a heat exchanger (50) disposed ahead of the orifice (13) and allowing air to exchange heat with a refrigerant; and

    a first magnet (320) disposed at the fan (200) and having magnetism,

    wherein the fan (200) has a ring-shaped rim (210); a hub (220) disposed at the center of the rim (210); and a plurality of blades (230) disposed around the hub, wherein the outer ends of the blades (230) are connected with the rim (210),

    wherein

    the first magnet (320) is disposed at the rim (210),

    the orifice (13) has a circular flow hole (13b) through which air flows and an orifice guide (13a) around the flow hole (13b), and

    a second magnet (310) is disposed at the orifice guide (13a), opposite the first magnet (320), and having magnetism,

    characterized in that

    the first magnet (320) has a ring shape,

    the second magnet (310) has a ring shape, and

    the indoor unit comprises a motor (400) disposed at the center of the base (12) and connected to the hub (220) for rotating the fan (200).


     
    2. The indoor unit of claim 1, wherein the fan (200) further has a disc-shaped fan base (240) connecting the hub (220) with the blades (230) and the first magnet (320) is disposed at the fan base (240).
     
    3. The indoor unit of claim 1 or 2, wherein a plurality of the first magnets (320) is disposed at regular intervals at the fan base (240).
     
    4. The indoor unit of claim 1, 2, or 3, wherein one side of each of the blades (230) is connected with the fan base (240).
     
    5. The indoor unit of any one of claims 1 to 4, wherein the hub (220) is integrally formed with the fan base (240).
     
    6. The indoor unit of any one of claims 1 to 5, wherein the second magnet (310) prevents the fan (200) from inclining or drooping by applying a magnetic force with the first magnet (320).
     


    Ansprüche

    1. Innenraumeinheit mit:

    einer Basis (12), die an einer Innenwand befestigt ist;

    einem Ventilator (200), der an der Basis (12) angeordnet ist und Luft bläst;

    einer Öffnung (13), die vor dem Ventilator (200) angeordnet ist und Luft zum Ventilator (200) leitet;

    einem Wärmetauscher (50), der vor der Öffnung (13) angeordnet ist und es ermöglicht, dass Luft Wärme mit einem Kältemittel tauscht; und

    einem ersten Magnet (320), der am Ventilator (200) angeordnet ist und einen Magnetismus aufweist,

    wobei der Ventilator (200) einen ringförmigen Kranz (210), eine in der Mitte des Kranzes (210) angeordnete Nabe (220) und mehrere um die Nabe angeordnete Schaufeln (230) aufweist, wobei die äußeren Enden der Schaufeln (230) mit dem Kranz (210) verbunden sind,

    wobei

    der erste Magnet (320) am Kranz (210) angeordnet ist,

    die Öffnung (13) ein kreisförmiges Strömungsloch (13b), durch das Luft strömt, und eine Öffnungsführung (13a) um das Strömungsloch (13b) aufweist, und

    ein zweiter Magnet (310) an der Öffnungsführung (13a) gegenüber dem ersten Magnet (320) angeordnet ist und einen Magnetismus aufweist,

    dadurch gekennzeichnet, dass

    der erste Magnet (320) eine Ringform aufweist,

    der zweite Magnet (310) eine Ringform aufweist, und

    die Innenraumeinheit einen Motor (400) aufweist, der in der Mitte der Basis (12) angeordnet ist und zum Drehen des Ventilators (200) mit der Nabe (220) verbunden ist.


     
    2. Innenraumeinheit nach Anspruch 1, wobei der Ventilator (200) ferner eine scheibenförmige Ventilatorbasis (240) aufweist, die die Nabe (220) mit den Schaufeln (230) verbindet, und der erste Magnet (320) an der Ventilatorbasis (240) angeordnet ist.
     
    3. Innenraumeinheit nach Anspruch 1 oder 2, wobei mehrere erste Magnete (320) in regelmäßigen Abständen an der Ventilatorbasis (240) angeordnet sind.
     
    4. Innenraumeinheit nach Anspruch 1, 2 oder 3, wobei eine Seite von jeder der Schaufeln (230) mit der Ventilatorbasis (240) verbunden ist.
     
    5. Innenraumeinheit nach einem der Ansprüche 1 bis 4, wobei die Nabe (220) integral mit der Ventilatorbasis (240) ausgebildet ist.
     
    6. Innenraumeinheit nach einem der Ansprüche 1 bis 5, wobei der zweite Magnet (310) verhindert, dass sich der Ventilator (200) neigt oder herunterhängt, indem er eine Magnetkraft mit dem ersten Magnet (320) ausübt.
     


    Revendications

    1. Unité intérieure, comprenant :

    une base (12) fixée sur un mur intérieur ;

    un ventilateur (200) disposé sur la base (12) et soufflant de l'air ;

    un orifice (13) disposé devant le ventilateur (200) et guidant l'air vers le ventilateur (200) ;

    un échangeur de chaleur (50) disposé devant l'orifice (13) et permettant un échange de chaleur entre l'air et un réfrigérant ; et

    un premier aimant (320) disposé sur le ventilateur (200) et magnétisé,

    où le ventilateur (200) présente une jante (210) de forme annulaire ; un moyeu (220) disposé au centre de la jante (210) ; et une pluralité de pales (230) disposées autour du moyeu, les extrémités extérieures des pales (230) étant raccordées à la jante (210),

    le premier aimant (320) est disposé contre la jante (210),

    l'orifice (13) présente une ouverture d'écoulement circulaire (13b) par où l'air s'écoule et un guidage (13a) d'orifice autour de l'ouverture d'écoulement (13b), et où un deuxième aimant (310) est disposé contre le guidage (13a) d'orifice en opposition au premier aimant (320), et est magnétisé,

    caractérisée en ce que

    le premier aimant (320) a une forme annulaire,

    le deuxième aimant (310) aune forme annulaire, et

    ladite unité intérieure comprend un moteur (400) disposé au centre de la base (12) et

    raccordé au moyeu (220) pour faire tourner le ventilateur (200).


     
    2. Unité intérieure selon la revendication 1, où le ventilateur (200) présente en outre une base (240) de ventilateur en forme de disque raccordée au moyeu (220) par les pales (230) et où le premier aimant (320) est disposé contre la base (240) du ventilateur.
     
    3. Unité intérieure selon la revendication 1 ou la revendication 2, où plusieurs premiers aimants (320) sont disposés à intervalle régulier sur la base (240) du ventilateur.
     
    4. Unité intérieure selon la revendication 1, la revendication 2 ou la revendication 3, où un côté de chaque pale (230) est raccordé à la base (240) du ventilateur.
     
    5. Unité intérieure selon l'une des revendications 1 à 4, où le moyeu (220) est formé d'un seul tenant avec la base (240) du ventilateur.
     
    6. Unité intérieure selon l'une des revendications 1 à 5, où le deuxième aimant (310) empêche le ventilateur (200) de se pencher ou de chuter par application d'une force magnétique par le premier aimant (320).
     




    Drawing












    REFERENCES CITED IN THE DESCRIPTION



    This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

    Patent documents cited in the description