EP2184553A1 - Indoor unit of air conditioner - Google Patents

Indoor unit of air conditioner Download PDF

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Publication number
EP2184553A1
EP2184553A1 EP09250130A EP09250130A EP2184553A1 EP 2184553 A1 EP2184553 A1 EP 2184553A1 EP 09250130 A EP09250130 A EP 09250130A EP 09250130 A EP09250130 A EP 09250130A EP 2184553 A1 EP2184553 A1 EP 2184553A1
Authority
EP
European Patent Office
Prior art keywords
indoor unit
main
case
sensor
sensor assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09250130A
Other languages
German (de)
French (fr)
Other versions
EP2184553B1 (en
Inventor
Seung Hoon Yang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to KR1020080110786A priority Critical patent/KR101507163B1/en
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP2184553A1 publication Critical patent/EP2184553A1/en
Application granted granted Critical
Publication of EP2184553B1 publication Critical patent/EP2184553B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0043Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0057Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/79Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20Casings or covers
    • F24F2013/207Casings or covers with control knobs; Mounting controlling members or control units therein
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00Control inputs relating to users or occupants
    • F24F2120/10Occupancy

Abstract

Provided is an indoor unit of an air conditioner, including a main body including a chassis providing a rear surface, and a front frame coupled to a front portion of the chassis, a heat exchanger received in the main body, a fan received in the main body and forcing air to flow, and a moving sensor assembly movably provided at a lower portion of the main body and including a sensor for sensing motion of an object.

Description

    BACKGROUND
  • Embodiments relate to an indoor unit of an air conditioner.
  • Generally, an air conditioner is a cooling/heating apparatus that cools or heats air within an inner space of a building, etc.
  • The air conditioner includes an outdoor unit receiving a compressor and an indoor unit installed at an indoor space to perform heat-exchange between indoor air and refrigerant. According to the types of air conditioners, the indoor unit and the outdoor unit may be integrated in one body.
  • An indoor heat exchanger, a fan assembly, and a filter for filtering sucked air are installed in the indoor unit. The indoor unit is classified into a wall-mounted type, a floor-mounted type, and a window type according to an installation position thereof.
  • Specifically, in the case of the wall-mounted type indoor unit, discharge louvers are provided to a lower portion of the indoor unit to control a discharge direction of air.
  • SUMMARY
  • Embodiments provide an indoor unit of an air conditioner, which senses a person in an indoor space to control a discharge direction of air.
  • In one embodiment, an indoor unit of an air conditioner includes: a main body including a chassis providing a rear surface, and a front frame coupled to a front portion of the chassis; a heat exchanger received in the main body; a fan received in the main body and forcing air to flow; and a moving sensor assembly movably provided at a lower portion of the main body and including a sensor for sensing motion of an object.
  • The details of one or more embodiments are set forth in the accompanying drawings and the description below. Other features will be apparent from the description and drawings, and from the claims.
  • BRIEF DESCRIPTION OF THE DRAWINGS
    • FIG. 1 is a cross-sectional view illustrating an indoor unit of an air conditioner according to an embodiment.
    • FIG. 2 is a perspective view illustrating operation of an indoor unit of an air conditioner according to an embodiment.
    • FIGS. 3 and 4 are perspective views illustrating a moving sensor assembly provided to an indoor unit of an air conditioner according to an embodiment.
    DETAILED DESCRIPTION OF THE EMBODIMENTS
  • Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings.
  • In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration specific preferred embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, and it is understood that other embodiments may be utilized and that logical structural, mechanical, electrical, and chemical changes may be made without departing from the spirit or scope of the invention. To avoid detail not necessary to enable those skilled in the art to practice the invention, the description may omit certain information known to those skilled in the art. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims.
  • FIG. 1 is a cross-sectional view illustrating an indoor unit 10 of an air conditioner according to one embodiment.
  • Referring to FIG. 1, the indoor unit 10 of the air conditioner includes a chassis 11, a main body, a base 12, and a front panel 14. A front surface of the chassis 11 is provided with a flow guide 111 for generating airflow. The main body includes a front frame 13 coupled to a front portion of the chassis 11. An intake grill 131 is provided to an upper surface of the front frame 13. The base 12 is rotatably coupled to a rear surface of the chassis 11 and fixed to a mounting wall surface. The front panel 14 is movably coupled to a front surface of the front frame 13.
  • The indoor unit 10 further includes an inner panel 15, a heat exchanger 19, a fan 20, and a discharge grill 16. The inner panel 15 is linked to a rear surface of the front panel 14 and rotatably provided to the front frame 13. The heat exchanger 19 is disposed between the front frame 13 and the chassis 11. The fan 20 is provided to a lower side of the heat exchanger 19 and sucks and discharges indoor air. The discharge grill 16 supports a lower end of the heat exchanger 19 and includes a discharge hole.
  • The indoor unit 10 further includes a discharge vane 21, a discharge louver 22, a bottom plate 23, and a holder member 24. The discharge vane 21 selectively covers the discharge hole. The discharge louver 22 is provided to the discharge hole and controls a discharge direction of air, together with the discharge vane 21. The bottom plate 23 covers piping passing through a lower end of the indoor unit 10. The holder member 24 is rotatably coupled to the chassis 11 and supports the piping. The discharge vane 21 and the discharge louver 22 may be driven by a motor (not shown).
  • Since the discharge vane 21 and the discharge louver 22 are adapted to control a discharge direction of air, both the discharge vane 21 and the discharge louver 22 may be referred to as a control member.
  • The indoor unit 10 further includes a pre-filter 17 and a dust-collecting filter 18. The pre-filter 17 filters air sucked through the front surface of the front frame 13 and the intake grill 131. The dust-collecting filter 18 is provided between the pre-filter 17 and the heat exchanger 19.
  • FIG. 2 is a perspective view illustrating operation of the indoor unit 10 of the air conditioner according to one embodiment.
  • Referring to FIG. 2, the discharge grill 16 with the discharge hole is provided to the lower portion of the indoor unit 10. That is, the discharge hole is disposed at a bottom surface of the indoor unit 10, and the discharge hole is provided with the discharge vane 21 and the discharge louver 22. Thus, sucked indoor air passes through the heat exchanger 19, and then is discharged to the bottom surface of the indoor unit 10.
  • Also, to suck indoor air, the front panel 14 is rotated and raised by a link member 26. Particularly, the front panel 14 is raised with its upper end inclined, by rotation of the link member 26. Thus, the indoor air is sucked into the main body through the intake grill 131 and through a space defined between the front frame 13 and the front panel 14. At this point, the inner panel 15 provided to the rear surface of the front panel 14 is still fixed to the front surface of the front frame 13.
  • A moving sensor assembly 27, sensing motion of a human body, is provided to a bottom edge of the indoor unit 10.
  • Particularly, the moving sensor assembly 27 is inserted into the indoor unit 10 when the indoor unit 10 does not operate, the moving sensor assembly 27 protrudes downward from the bottom surface of the indoor unit 10 when the indoor unit 10 operates. The moving sensor assembly 27 is rotatable a predetermined angle about a vertical axis.
  • As such, the moving sensor assembly 27 protrudes a predetermined length from the bottom surface of the indoor unit 10, and is rotatable in a left-and-right direction (horizontal direction), so that a range in sensing motion of a human body may be increased.
  • Hereinafter, configuration and operation of the moving sensor assembly 27 will now be described with reference to the accompanying drawings.
  • FIGS. 3 and 4 are perspective views illustrating the moving sensor assembly 27 provided to an indoor unit of an air conditioner according to an embodiment.
  • Referring to FIGS. 3 and 4, the moving sensor assembly 27 includes a frame 271 having a hollow part therein, a case 272 moving up and down, fitted to the hollow part, a plurality of moving sensors 277 disposed in the case 272, a motor bracket 274 fixed to the case 272, a rotary motor 278 (may be referred to as a second motor) placed on the motor bracket 274, a rotary bracket 275 rotating, connected to a rotation shaft of the rotary motor 278, an elevation motor 279 (may be referred to as a first motor) provided to an outer surface of the frame 271, and a pinion 273 provided to a rotation shaft of the elevation motor 279.
  • Particularly, a rack 272b engaging with the pinion 273 and disposed in an up-and-down direction on one side at an edge of the case 272, and a guide protrusion 272a protrudes on another side. A guide rail 276 is provided in the up-and-down direction to the frame 271. The guide rail 276 receives and guides the guide protrusion 272a, so that the case 272 stably moves up and down.
  • More particularly, both ends of the motor bracket 274 bend downward and coupled to an edge of the case 272. The rotary motor 278 is placed on an upper side of the motor bracket 274. Thus, the case 272 and the rotary motor 278 move up and down together. The rotary bracket 275 is received in the case 272, coupled to the rotation shaft of the rotary motor 278. The rotary bracket 275 rotates a predetermined angle in the left direction or the right direction according to driving of the rotary motor 278. The elevation motor 279, fixed to the frame 271, rotates the pinion 273. Then, the rack 272b engaging with the pinion 273 moves up and down. Since the rack 272b is integrated with the edge of the case 272 in a single body, the driving of the elevation motor 279 moves the case 272 up and down. The frame 271 is fixed to the bottom surface of the indoor unit 10.
  • For example, the moving sensor 277 may include an infrared sensor, but is not limited thereto.
  • Hereinafter, the operation of the moving sensor assembly 27 will now be described. First, when an operation signal is input to the indoor unit 10, the front panel 14 is raised to open a front intake opening, and the discharge vane 21 is rotated to open the discharge hole. Then, power is applied to the elevation motor 279, the pinion 273 connected to the rotation shaft of the elevation motor 279 rotates. After that, the rack 272b engaging with the pinion 273 moves down, and the case 272 protrudes from the bottom surface of the indoor unit 10. Thereafter, the rotary motor 278 is operated to rotate the rotary bracket 275, so that the moving sensor 277 rotates a predetermined angle in the left or right direction.
  • Movement of the discharge louver 22 and the discharge vane 21 can be controlled according to information sensed by the moving sensors 277.
  • The rotary bracket 275 may be provided with the moving sensors 277. The moving sensors 277 are disposed in different directions from each other to increase a sensing range.
  • The case 272 is removably coupled to the frame 271, so that an assembly including the case 272, the moving sensors 277, the motor bracket 274, and the rotary motor 278 can be replaced as a single module. In other words, when the case 272 is pulled upward, the guide protrusion 272a moves upward along the guide rail 276. When the guide protrusion 272a goes out of the guide rail 276, the case 272 is removed from the frame 271.
  • According to the above configuration, since the moving sensors 277 protrude downward a predetermined length from the bottom surface of the indoor unit 10, and rotate in the left and right directions, the sensing range thereof is greater than that of a sensing member fixed to the indoor unit 10 without protruding from the bottom surface of the indoor unit 10.
  • Also, movement of the discharge vane 21 and the discharge louver 22 can be controlled according to information sensed by the sensor. Thus, for example, air is discharged toward a person.
  • While movement of the discharge louver 22 and the discharge vane 21 are controlled according to sensed information of the moving sensors 277 in the embodiments, rotation speed of the fan 20 or temperature of discharged air may also be controlled.
  • That is, for example, when a person is not sensed by the moving sensor, the fan may be stopped, temperature of air discharged when cooling operation may be increased, or the temperature of air discharged when heating operation is decreased.
  • Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art.

Claims (10)

  1. An indoor unit of an air conditioner, the indoor unit comprising:
    a main body including a chassis providing a rear surface, and a front frame coupled to a front portion of the chassis;
    a heat exchanger received in the main body;
    a fan received in the main body and forcing air to flow; and
    a moving sensor assembly movably provided at a lower portion of the main body and including a sensor for sensing a person or motion of a person.
  2. The indoor unit according to claim 1, further comprising a control member controlling a discharge direction of heat-exchanged air passing through the heat exchanger,
    wherein movement of the control member is controlled according to sensed information of the sensor.
  3. The indoor unit according to claim 2, wherein operation of the fan or temperature of discharged air is controlled according to the sensed information of the sensor.
  4. The indoor unit according to claim 1, wherein the sensor is movable in an up-and-down direction of the main body, and
    the moving sensor assembly protrudes from a bottom surface of the main body when the main body operates.
  5. The indoor unit according to claim 4, wherein the sensor is horizontally rotatable with respect to a vertical axis when the moving sensor assembly protrudes from the bottom surface of the main body.
  6. The indoor unit according to claim 1, wherein the moving sensor assembly comprises:
    a frame fixed to the main body; and
    a case movably coupled to the frame, wherein the sensor is received in the case.
  7. The indoor unit according to claim 6, wherein the moving sensor assembly further comprises:
    a rotary bracket received in the case in a state where the sensor is mounted to the rotary bracket;
    a rotary motor providing a torque to the rotary bracket; and
    a motor bracket fixed to the case and supporting the rotary motor.
  8. The indoor unit according to claim 7, wherein the case, the sensor, the rotary bracket, the motor bracket, and the rotary motor are provided in a single module.
  9. The indoor unit according to claim 7, wherein the moving sensor assembly further comprises:
    a rack extending in an up-and-down direction at an edge on a side of the case;
    a pinion engaging with the rack; and
    an elevation motor provided to a side of the frame and providing a torque to the pinion.
  10. The indoor unit according to claim 9, wherein the moving sensor assembly further comprises:
    a guide protrusion protruding an edge on another side of the case; and
    a guide rail extending the up-and-down direction on a side of the frame and receiving the guide protrusion.
EP09250130A 2008-11-10 2009-01-19 Indoor unit of air conditioner Expired - Fee Related EP2184553B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020080110786A KR101507163B1 (en) 2008-11-10 2008-11-10 Indoor unit for air conditioning apparatus

Publications (2)

Publication Number Publication Date
EP2184553A1 true EP2184553A1 (en) 2010-05-12
EP2184553B1 EP2184553B1 (en) 2011-08-31

Family

ID=41666420

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09250130A Expired - Fee Related EP2184553B1 (en) 2008-11-10 2009-01-19 Indoor unit of air conditioner

Country Status (5)

Country Link
EP (1) EP2184553B1 (en)
KR (1) KR101507163B1 (en)
CN (1) CN101737912B (en)
AT (1) AT522777T (en)
ES (1) ES2370105T3 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012042183A (en) * 2010-08-23 2012-03-01 Toshiba Consumer Electronics Holdings Corp Indoor unit for air conditioner
US20150377503A1 (en) * 2014-06-25 2015-12-31 Mitsubishi Electric Corporation Indoor unit of air-conditioning apparatus and air-conditioning apparatus
WO2017022134A1 (en) * 2015-08-06 2017-02-09 三菱電機株式会社 Sensor unit and indoor unit of air conditioner provided therewith
WO2017026071A1 (en) * 2015-08-13 2017-02-16 三菱電機株式会社 Sensor unit and indoor unit for air conditioning device provided with sensor unit
EP2808615A3 (en) * 2013-05-29 2018-01-17 Mitsubishi Electric Corporation Indoor unit for air-conditioning apparatus
JP2018119783A (en) * 2018-03-28 2018-08-02 三菱電機株式会社 Indoor machine of air conditioner
EP3330619A4 (en) * 2015-07-30 2018-08-22 Mitsubishi Electric Corporation Indoor unit of air conditioners
WO2019220631A1 (en) * 2018-05-18 2019-11-21 三菱電機株式会社 Indoor unit for air conditioner
EP3690328A1 (en) * 2019-01-31 2020-08-05 LG Electronics Inc. Indoor unit for air conditioner

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2242515A (en) * 1990-03-31 1991-10-02 Toshiba Kk Ventilating apparatus with means for detecting the presence or absence of people
US5331825A (en) * 1992-03-07 1994-07-26 Samsung Electronics, Co., Ltd. Air conditioning system
JP2001059640A (en) * 1999-08-20 2001-03-06 Fujitsu General Ltd Air conditioner
JP2001254990A (en) * 2000-03-14 2001-09-21 Sanyo Electric Co Ltd Air conditioner
US20040079094A1 (en) * 2001-12-28 2004-04-29 Masaya Kasai Air conditioner
JP2006342990A (en) * 2005-06-07 2006-12-21 Mitsubishi Electric Corp Ventilator
JP2007032887A (en) * 2005-07-25 2007-02-08 Mitsubishi Electric Corp Air conditioner and mobile radiation temperature detector
EP2031316A2 (en) * 2007-08-30 2009-03-04 Mitsubishi Electric Corporation Air conditioner

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003194385A (en) * 2001-12-28 2003-07-09 Daikin Ind Ltd Air conditioner
JP4983216B2 (en) * 2006-11-15 2012-07-25 パナソニック株式会社 State detection device and air conditioner using the same

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2242515A (en) * 1990-03-31 1991-10-02 Toshiba Kk Ventilating apparatus with means for detecting the presence or absence of people
US5331825A (en) * 1992-03-07 1994-07-26 Samsung Electronics, Co., Ltd. Air conditioning system
JP2001059640A (en) * 1999-08-20 2001-03-06 Fujitsu General Ltd Air conditioner
JP2001254990A (en) * 2000-03-14 2001-09-21 Sanyo Electric Co Ltd Air conditioner
US20040079094A1 (en) * 2001-12-28 2004-04-29 Masaya Kasai Air conditioner
JP2006342990A (en) * 2005-06-07 2006-12-21 Mitsubishi Electric Corp Ventilator
JP2007032887A (en) * 2005-07-25 2007-02-08 Mitsubishi Electric Corp Air conditioner and mobile radiation temperature detector
EP2031316A2 (en) * 2007-08-30 2009-03-04 Mitsubishi Electric Corporation Air conditioner

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012042183A (en) * 2010-08-23 2012-03-01 Toshiba Consumer Electronics Holdings Corp Indoor unit for air conditioner
EP2808615A3 (en) * 2013-05-29 2018-01-17 Mitsubishi Electric Corporation Indoor unit for air-conditioning apparatus
US20150377503A1 (en) * 2014-06-25 2015-12-31 Mitsubishi Electric Corporation Indoor unit of air-conditioning apparatus and air-conditioning apparatus
US10024563B2 (en) * 2014-06-25 2018-07-17 Mitsubishi Electric Corporation Indoor unit of air-conditioning apparatus and air-conditioning apparatus
US10465938B2 (en) 2015-07-30 2019-11-05 Mitsubishi Electric Corporation Indoor unit for air-conditioning apparatus
EP3330619A4 (en) * 2015-07-30 2018-08-22 Mitsubishi Electric Corporation Indoor unit of air conditioners
AU2015403945B2 (en) * 2015-07-30 2019-01-03 Mitsubishi Electric Corporation Indoor unit for air-conditioning apparatus
WO2017022134A1 (en) * 2015-08-06 2017-02-09 三菱電機株式会社 Sensor unit and indoor unit of air conditioner provided therewith
JPWO2017026071A1 (en) * 2015-08-13 2018-03-15 三菱電機株式会社 Indoor unit of air conditioner equipped with sensor unit and sensor unit
WO2017026071A1 (en) * 2015-08-13 2017-02-16 三菱電機株式会社 Sensor unit and indoor unit for air conditioning device provided with sensor unit
JP2018119783A (en) * 2018-03-28 2018-08-02 三菱電機株式会社 Indoor machine of air conditioner
WO2019220631A1 (en) * 2018-05-18 2019-11-21 三菱電機株式会社 Indoor unit for air conditioner
EP3690328A1 (en) * 2019-01-31 2020-08-05 LG Electronics Inc. Indoor unit for air conditioner

Also Published As

Publication number Publication date
CN101737912B (en) 2013-03-27
EP2184553B1 (en) 2011-08-31
KR101507163B1 (en) 2015-03-30
AT522777T (en) 2011-09-15
ES2370105T3 (en) 2011-12-12
CN101737912A (en) 2010-06-16
KR20100051954A (en) 2010-05-19

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