EP4522922A1 - Louver arrangement and portable air treatment unit - Google Patents

Louver arrangement and portable air treatment unit

Info

Publication number
EP4522922A1
EP4522922A1 EP22729132.5A EP22729132A EP4522922A1 EP 4522922 A1 EP4522922 A1 EP 4522922A1 EP 22729132 A EP22729132 A EP 22729132A EP 4522922 A1 EP4522922 A1 EP 4522922A1
Authority
EP
European Patent Office
Prior art keywords
louver
arrangement
track
louver portion
treatment unit
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.)
Pending
Application number
EP22729132.5A
Other languages
German (de)
French (fr)
Inventor
Christian Lundberg
Metin TUZTAS
Zack PALOMAKI
Soner Suda
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.)
Electrolux Appliances AB
Original Assignee
Electrolux Appliances AB
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
Application filed by Electrolux Appliances AB filed Critical Electrolux Appliances AB
Publication of EP4522922A1 publication Critical patent/EP4522922A1/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1413—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre using more than one tilting member, e.g. with several pivoting blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • F24F2013/1433—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means with electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/12—Details or features not otherwise provided for transportable

Definitions

  • the invention relates to a louver arrangement and to a portable air treatment unit.
  • Portable air treatment units of various kinds are known.
  • a portable air treatment unit is movable by a person in order to be placed in a space, such a room, the air of which is to be treated in one or more ways.
  • the portable air treatment unit may be e.g., carried or wheeled by the person moving the portable air treatment unit.
  • Air treatment may be performed for the purpose of providing an agreeable climate and/or change certain air properties, such as the cleanliness of air in a space, such as a room or small building.
  • an air treatment unit may provide one or more of air cooling, air heating, air filtering, dehumidification of air, humidification of air, etc.
  • a portable air treatment unit may be electrically powered and configured to be connected to mains power.
  • a common feature of portable air treatment units is that ambient air is drawn through an airflow path defined within the air treatment unit.
  • one or more treatment devices and/or treatment members affect one or more properties of the air being drawn through the airflow path.
  • a fan or other kind of displacement device is provided to draw ambient air through an inlet into the airflow path, move air along the airflow path, and discharge the treated air through an outlet of the airflow path.
  • the outlet may be arranged at an upper portion of the air treatment unit.
  • the treated air leaving the air treatment unit is dispersed in the space where the air treatment unit is standing and gradually alters one or more properties, such as temperature, cleanliness, and/or humidity of the air in the space.
  • the air treatment unit may comprise a so-called louver, by means of which the treated air is directed from the air treatment unit.
  • An angle of the louver may be variable in order to change the angle of the flow of treated air from the air treatment unit into the surrounding space. Dispersion of the treated air into the space where the air treatment unit is standing thus, may be controlled at least to a certain degree.
  • EP 2835597 discloses an air conditioner.
  • a louver/flap that adjusts an air direction is provided at a blow-out opening for temperature conditioned air.
  • the flap includes a wide upper flap and a slightly narrower lower flap, that extend in the length direction of the air blow-out opening provided in the horizontal direction and that are coupled to form a single unit by joining pieces with a predetermined spacing between the flaps so as to be parallel to each other.
  • the second louver portion and the drive arrangement being connected to the first louver portion entail that the louver arrangement form one unit that as such is connectable to a portable air treatment unit.
  • the louver arrangement can be connected via the first louver portion to the relevant air treatment unit.
  • a power supply such as an internal electric cord within the air treatment unit, may be connected to the drive arrangement for powering the same.
  • the louver arrangement provides for a portable air treatment unit, from which treated air can be discharged with better penetration into ambient air than from an air treatment unit comprising a simpler louver consisting of only one flap.
  • a more efficient dispersion of the treated air thus, can be achieved in the space where the treatment unit is standing.
  • a high air comfort thus, can be provided quickly by the treatment unit.
  • the portable air treatment unit may be configured for treating one or more properties of the air in a space, such as a room or a small building, where the portable air treatment unit is placed.
  • the portable air treatment unit is movable by a person in order to be placed in a space, the air of which is to be treated.
  • the portable air treatment unit may be e.g., carried or wheeled by the person moving the portable air treatment unit.
  • the portable air treatment unit may alternatively be referred to as air treatment unit, treatment unit, or simply the unit.
  • the portable air treatment unit may provide one or more of:
  • the unit may comprises a vapour-compression refrigeration system, VCRS.
  • the unit may comprise a heating element.
  • the unit may include a filter such as a porous filter and/or an active filter, such as an electrostatic filter.
  • the unit may comprises a vapour-compression refrigeration system, VCRS.
  • the unit may include inter alia a steam producing system.
  • Air that has been treated such as cooled, heated, cleaned, dehumidified, humidified, etc., in the air treatment unit is herein referred to as treated air.
  • the portable air treatment unit may be electrically powered and configured to be connected to mains power.
  • a common feature of portable air treatment units is that ambient air is drawn through the airflow path defined within the air treatment unit.
  • one or more treatment devices and/or treatment members affect one or more properties of the air being drawn through the airflow path.
  • the treatment unit comprises a fan or other kind of displacement device arranged to draw ambient air through the inlet into the airflow path, move air along the airflow path, and discharge the treated air through the outlet of the airflow path.
  • the outlet may be arranged at an upper portion of the air treatment unit.
  • the treated air discharged from the air treatment unit is dispersed in the space where the air treatment unit is standing and gradually alters one or more properties, such as temperature, cleanliness, and/or humidity of the air in the space.
  • At least a portion of the first louver portion extends in a first plane and at least a portion of the second louver portion extends in a second plane.
  • the second plane may extend at an angle to the first plane.
  • the louver arrangement can be positioned to provide the shallow discharge of treated air with the first louver portion angled more steeply upwardly than if the louver arrangement would only provide a straight guiding contour.
  • the drive arrangement may define a displacement path for the second louver portion, and the second louver portion may be displaceable from the first position along the displacement path to the second position. In this manner, it may be ensured that the second louver portion may be reliably moved from the first position to the second position and vice versa.
  • the drive arrangement may comprise at least a first track forming member connected to the first louver portion.
  • the first track forming member may form a first guide track.
  • the second louver portion may comprise at least a first track follower configured to follow the first guide track.
  • the first guide track may comprise a straight first portion and a second portion angled or curved in relation to the first portion.
  • the first track follower may be positioned in the second portion when the second louver portion is in the second position.
  • the second louver portion may be arranged at an angle to the first louver portion when the second louver portion is in the second position.
  • the louver arrangement may comprise a second track forming member connected to the first louver portion.
  • the second track forming member may form a second guide track.
  • the second louver portion may comprise a second track follower configured to follow the second guide track.
  • the second louver portion has a longitudinal extension extending between a first lateral side and a second lateral side of the second louver portion.
  • the first track forming member may be arranged adjacent to the first lateral side and the second track forming member may be arranged adjacent to the second lateral side. In this manner, the second louver portion may be guided at two lateral side portions thereof as the second louver portion is moved from the first position to the second position.
  • a steady guiding of the second louver portion may be provided.
  • the second lateral side of the second louver portion may be arranged adjacent to the second track forming member with a play between the second lateral side and the second track forming member. In this manner, the second louver portion may be guided as it is moved between the first and second positions without the second louver portion accidentally being locked in relation to the first louver portion e.g., by pinching engagement between the second louver portion and the second track forming member.
  • the second louver portion may be connected to the drive arrangement via the first track follower. In this manner, the drive arrangement may move the second louver portion between the first and second positions by engagement with the first track follower of the second louver portion.
  • the outlet of the airflow path may be arranged at an upper portion of the housing when the portable air treatment unit is positioned on a horizontal surface in an ordinary operating position of the portable air treatment unit. In this manner, treated air may be efficiently discharged into the space where the air treatment unit is standing.
  • Fig. 1 schematically illustrates a cross section through a portable air treatment unit according to embodiments
  • Figs. 3a - 4e illustrate a louver arrangement according to embodiments
  • Fig. 5 shows the louver arrangement of Figs. 3a - 4e in an exploded view
  • Fig. 6 schematically shows embodiments of a louver arrangement
  • Figs. 7a - 8b disclose an upper portion of a portable air treatment unit.
  • Fig. 1 schematically illustrates a cross section through a portable air treatment unit 2 according to embodiments.
  • a person can carry e.g., by one or more built in handles (not shown), and/or wheel e.g., on built-in wheels (not shown) the portable air treatment unit 2 into a desired position in a space, the air of which is to be treated.
  • the air treatment unit 2 comprises a housing 4 and an airflow path 6.
  • the airflow path 6 extends through the housing 4.
  • the airflow path 6 has an inlet 8 in the housing 4 and an outlet 10 in the housing 4.
  • the inlet 8 forms an inlet opening of the airflow path 6.
  • the outlet 10 forms an outlet opening of the airflow path 6.
  • a fan or other displacement unit 12 is arranged along the airflow path 6 and configured to draw ambient air to be treated into the airflow path 6 via the inlet 8 and to discharge treated air from the airflow path 6 via the outlet 10.
  • the outlet 10 of the airflow path 6 is arranged at an upper portion of the housing 4 when the air treatment unit 2 is positioned on a horizontal surface in an ordinary operating position of the unit 2.
  • the treated air which is discharged from the treatment unit 2 may be discharge from a position that favours dispersion of the treated air in the space where the unit 2 is standing.
  • a compact air treatment unit may be provided when the fan 12 comprises a forward curved centrifugal fan.
  • the air treatment unit 2 further comprises one or more of passive elements, active elements, systems, members, devices, etc. configured for treating the air that is drawn through the airflow path 6.
  • Such elements, systems, members, devices, etc., herein generally depicted with reference number 14, include one or more treatment devices and/or treatment members 14’ arranged in and/or adjacent the airflow path 6.
  • the system 14 would be a vapour-compression refrigeration system, VCRS.
  • Waste heat from the VCRS, emanating from the condenser, is disposed of outside the space to be cooled.
  • a hose (not shown) may be used to conduct heated air, which is the carrier of the waste heat, out of the space where the unit 2 is standing.
  • the treatment device 14’ of the element/system/member/device 14 may comprise one or more of an evaporator, a heating element, a filter, a steam source, etc.
  • the airflow path 6 includes conduit portions connecting the various components along the airflow path 6 with the inlet 8, each other, and the outlet 10.
  • the portable air treatment unit 2 comprises a louver arrangement 20 at the outlet 10 of the airflow path 6.
  • the louver arrangement 20 is discussed in further detail below with reference to Figs. 2a - 8b.
  • the louver arrangement 20 is configured for directing or guiding the treated air from the outlet 10 into the space where the unit 2 is standing.
  • the dispersion of the treated air in the space where the air treatment unit is standing thus, can be controlled at least to a certain degree.
  • the dispersion is improved over a that provided by a more simple type of louver.
  • An angle of the louver arrangement 20 is variable in relation to the housing 4.
  • treated air discharged from the outlet 10 can be directed in different directions from the air treatment unit 2 into the surrounding space.
  • Figs. 2a and 2b illustrate a portable air treatment unit 2 according to embodiments.
  • the air treatment unit 2 may be a treatment unit 2 as discussed above with reference to Fig. 1 .
  • the treatment unit 2 comprises a housing 4, an airflow path with an outlet 10, and a louver arrangement 20 arranged at the outlet 10.
  • the louver arrangement 20 comprises a first louver portion 22 and a second louver portion 24, which is moveably connected to the first louver portion 22.
  • the second louver portion 24 is displaceable in relation to the first louver portion 22.
  • louver arrangement 20 and the displacement of the second louver portion 24 in relation to the first louver portion 22 is discussed further below with reference to Figs. 3a - 8b.
  • louver arrangement 20 is shown at two different angles in relation to the housing 4.
  • first louver portion 22 is connected to the housing 4 and can be positioned at different angles in relation to the housing 4. Since the second louver portion 24 is connected to the first louver portion 22, also the second louver portion 24 will be arranged at different angles in relation to the housing 4 together with the first louver portion 22.
  • the first louver portion 22 may be driven by a controllable automated drive in order to be positioned at different angular positions in relation to the housing 4.
  • the automated drive may be controlled by a user of the treatment unit 2 e.g., by adjusting a target setting for the air treatment device, such as a target temperature, target humidity, etc.
  • a control unit of the air treatment unit 2 may be configured to change the angular setting of the louver arrangement 20 depending on the treatment to be performed in order to reach the target setting.
  • a user may provide angular input to the automated drive for setting the angle of the louver arrangement 20.
  • the first louver portion 22 may be manually set at different angular positions in relation to the housing 4 by a user physically moving the first louver portion 22 or a control lever, control wheel, etc., mechanically connected to the first louver portion 22.
  • the first louver portion 22 is shown in a fully opened position i.e. , at a maximum angle in relation the housing 4 and the outlet 10.
  • at least a portion of the second louver portion 24 extends beyond an outer periphery of the first louver portion 22.
  • the second louver portion 24 is angled in relation to the first louver portion 22.
  • the first louver portion 22 is shown at an angle in between the fully opened position and a closed position in which the outlet 10 is closed by the louver arrangement 20.
  • the second louver portion 24 is angled in relation to the first louver portion 22.
  • Figs. 3a - 5 illustrate a louver arrangement 20 according to embodiments.
  • the louver arrangement 20 is a louver arrangement 20 for a portable air treatment unit as discussed above with reference to Figs. 1 - 2b.
  • the louver arrangement 20 is shown in an isometric view, a front view, a top view, and two side views.
  • the louver arrangement 20 is shown in an exploded view.
  • the louver arrangement 20 is arranged with a second louver portion 24 in a first position in relation to a first louver portion 22.
  • the louver arrangement 20 is arranged with the second louver portion 24 in a second position in relation to the first louver portion 22.
  • the louver arrangement 20 comprises a first louver portion 22 having an outer periphery, a second louver portion 24, which is moveably connected to the first louver portion 22, and a drive arrangement 28.
  • the drive arrangement 28 is connected to the first louver portion 22.
  • the drive arrangement 28 is configured to displace the second louver portion 24 from a first position (shown in Figs. 3a - 3e) to a second position (shown in Figs. 4a - 4e) in relation to the first louver portion 22.
  • the drive arrangement 28 is also configured to displace the second louver portion 24 from the second position back to the first position.
  • the second louver portion 24 In the first position, the second louver portion 24 is arranged within the outer periphery of the first louver portion 22. In the second position, at least a portion of the second louver portion 24 extends beyond the outer periphery of the first louver portion 22. In this manner, with the second louver portion 24 in its second position, the louver arrangement 20 provides a longer guiding contour for treated air than when the second louver portion 24 is in its first position. Since the drive arrangement 28 is configured to displace the second louver portion 24 between the first and second positions, the louver arrangement 20 can be altered between providing a longer and a shorter guiding contour.
  • the longer guiding contour provides a more precise guiding of the treated air in comparison with a shorter guiding contour.
  • the second louver portion 24 is angled in relation to the first louver portion 22 in the second position of the second louver portion 24, further possibilities in guiding the treated air are opened up.
  • the louver arrangement 20 In the first position of the second louver portion 24, the louver arrangement 20 is compact and thus, occupies a smaller space. This may be beneficial when the relevant air treatment unit is not in use and the louver arrangement 20 is arranged in an inactive position e.g., in a closed position. However, also with the second louver portion 24 in its first position the louver arrangement 20 may be utilised for directing treated air discharged from the air treatment unit. The shorter guiding contour may be utilised in some operational situations of the air treatment unit.
  • the louver arrangement 20 is versatile since it in addition to the short guiding contour also provides the longer guiding contour with the second louver portion 24 in its second position and thus, providing more precise guiding of treated air and better penetration of the treated air into ambient air. This promotes dispersion of the treated air in the space where the treatment unit is standing.
  • a control unit of the relevant air treatment unit may be configured to control the drive arrangement 28 for moving the second louver portion 24.
  • the control unit may be controlled by a user of the treatment unit e.g., by adjusting a target setting for the air treatment device, such as a target temperature, target humidity, etc. Alternatively or additionally, a user may provide input to the control unit for setting the first or second position of the second louver portion 24.
  • At least a portion of the first louver portion 22 extends in a first plane 30 and at least a portion of the second louver portion 24 extends in a second plane 32.
  • the first and second planes 30, 32 are indicated with broken lines in some of Figs. 3a - 4e.
  • the second plane 32 in the second position, see Figs. 4a - 4e, extends at an angle p to the first plane 30, see Fig. 4d.
  • a curved guiding contour is thus, provided by the louver arrangement 20 with the second louver portion 24 in its second position.
  • the first louver portion 22 can be angled in relation to an outlet of an airflow path of the air treatment unit such that the first louver portion 22 provides a low flow resistance for the discharged treated air. And with the second louver portion 24 in its second position, the treated air can be directed in a more horizontal direction than with a straight guiding contour. Therefore, conditions are provided for efficient dispersion of the treated air within the space where the unit is standing.
  • the second plane 32 is arranged substantially in parallel with the first plane 20. In this manner, the louver arrangement 20 is compact when the second louver portion 24 is in its first position.
  • the drive arrangement 28 comprises a motor 34 and a linkage 36 interconnecting the motor 34 with the second louver portion 24.
  • the drive arrangement 28 may comprise a motor 34 and a leadscrew 38 interconnecting the motor 34 with the second louver portion 24. Irrespective of how the rotational motion of the motor 34 is converted into a translational motion of the second louver portion 24, the drive arrangement 28 defines a displacement path for the second louver portion 24, and the second louver portion 24 is displaceable from the first position along the displacement path to the second position.
  • the defined displacement path ensures that the second louver portion 24 is reliably moved from the first position to the second position and also reliably moved from the second position back to the first position.
  • the drive arrangement 28 comprises at least a first track forming member 40 connected to the first louver portion 22.
  • the first track forming member 40 forms a first guide track 42.
  • the second louver portion 24 comprise at least a first track follower 44 configured to follow the first guide track 42. See e g., Figs. 3a, 4a, 4b, and 5.
  • the second louver portion 24 is brought to follow the displacement path when the drive arrangement 28 displaces the second louver portion 24 from the first position to the second position as the first track follower 44 follows the first guide track 42. Conversely, the second louver portion 24 follows the displacement path while it is moved by the drive arrangement 28 from the second position to the first position as the first track follower 44 follows the first guide track 42.
  • the first guide track 42 comprises a straight first portion 46 and a second portion 48 angled or curved in relation to the first portion 46, see Fig. 5.
  • the first track follower 44 is positioned in the second portion 46 when the second louver portion 24 is in the second position, see Fig. 4b.
  • the second plane 32 is arranged at an angle to the first plane 30 when the second louver portion 24 is in the second position, see Figs. 4a - 4e.
  • the first track follower 44 When the second louver portion 24 is in its first position, the first track follower 44 is positioned in the first portion 46 of the first guide track 42.
  • the second plane 32 is arranged in parallel with the first plane 30 when the second louver portion 24 is in the first position, see Figs. 3a - 3e.
  • the louver arrangement 20 comprises a second track forming member 50 connected to the first louver portion 22.
  • the second track forming member 50 forms a second guide track 52.
  • the second louver portion 24 comprises a second track follower 54 configured to follow the second guide track 52.
  • the second track forming member 50 may be seen to form part of the drive arrangement 28.
  • the drive arrangement comprises one motor 34 and one linkage 36 or leadscrew 38.
  • the drive arrangement may comprise more than one motor, such as two motors, and/or more than one linkage or leadscrew.
  • one motor and one linkage or leadscrew may be arranged at each of the first and second track forming members 40, 50.
  • the second louver portion 24 has a longitudinal extension L2 extending between a first lateral side 56 and a second lateral side 58 of the second louver portion 24.
  • the first track forming member 40 is arranged adjacent to the first lateral side 56 and the second track forming member 50 is arranged adjacent to the second lateral side 58. See Figs. 3b, 4b, and 5.
  • the first louver portion 22 has a longitudinal extension L1 extending between lateral sides of the first louver portion 22, see Figs. 4b/4c.
  • the second guide track 52 comprises a straight portion 60 and a further portion 62 angled or curved in relation to the straight portion 60, see Fig. 5. Accordingly, the second track follower 54 is positioned in the further portion 62 when the second louver portion 24 is in the second position, see Fig. 4a.
  • the second lateral side 58 of the second louver portion 24 is arranged adjacent to the second track forming member 50 with a play between the second lateral side 58 and the second track forming member 50.
  • the play between the second lateral side 58 and the second track forming member 50 may be within a range of 0.1 - 2 % of a length of the second louver portion 24 along the longitudinal extension L2. Mentioned purely as an example, the length of the second louver portion 24 along the longitudinal extension L2 may be approximately 300 mm and the play may be 0.3 mm.
  • the first track follower 44 may extend from the first lateral side 56 of the second louver portion 24 in parallel with the second plane 32, and the second track follower 54 may extend from the second lateral side 58 in parallel with the second plane 32.
  • the first and second track followers are arranged at a far distance from each other and thus, a stable guiding of the second louver portion 24 as it is moved between first and second positions is achieved.
  • the second louver portion 24 comprises a third track follower 64 extending from the first lateral side 56 of the second louver portion 24 in parallel with the second plane 32 and in parallel with the first track follower 44, see e.g., Figs. 4b and 5.
  • the third track follower 64 is configured to follow the first guide track 42. Since the first and third track followers 44, 64 are arranged at the first lateral side 56 of the second louver portion 24 and both are configured to follow the first guide track 42, the second louver portion 24 is securely positioned and accordingly, securely guide at its first lateral side 56. Thus, the second louver portion 24 can be reliably moved between its first and second positions.
  • the third track follower 64 is positioned in the first portion 46 of the first guide track 42 or in the second portion 48 of the first guide track 42 when the second louver portion 24 is in the second position.
  • the second plane 32 is arranged at an angle P to the first plane 30 when the second louver portion 24 is in the second position, see Figs. 4a - 4e.
  • the third track follower 64 is positioned in the first portion 46 of the first guide track 42 when the second louver portion 24 is in the first position.
  • the second plane 32 is arranged in parallel with the first plane 30 when the second louver portion 24 is in the first position, see Figs. 3a - 3e.
  • the first and third track followers 44, 64 extend through the first track forming member 40.
  • the first and third track followers 44, 64 are secured to the drive arrangement 28 by a mounting member 66.
  • the mounting member 66 connects to the first and third track followers 44, 64 on opposite sides of the first track forming member 40.
  • the second louver portion 24 may be connected securely to the first track forming member 40 and the first louver portion 22.
  • the mounting member 66 is arranged in sliding abutment with the first track forming member 40. In this manner, the second louver portion 24 is securely held against the first track forming member 40 and accordingly, also held securely in relation to the first louver portion 22.
  • the second louver portion 24 is prevented from changing position to any substantial extent within the second plane 32. Thus, accidental locking of the second louver portion 24 in relation to the first louver portion 22 is avoided.
  • the mounting member 66 connecting to the first and third track followers 44, 64 on opposite sides of the first track forming member 40 and the mounting member 66 being arranged in abutment with the first track forming member 40 - possible minor positional changes of the second louver portion 24 within the second plane 32 will still not lead to accidental locking of the second louver portion 24 in relation to the first louver portion 22.
  • the mounting member 66 is held in place by a cover member 68.
  • the mounting member 66 is arranged between the first track forming member 40 and the cover member 68.
  • the mounting member 66 is arranged to be slidable in parallel with the first plane 30 and thus, displacing the second louver portion 24 between the first and second positions. See e g., Figs. 3a, 4a, and 5.
  • a pair of first recesses 70 of the mounting member 66 engage with the first track following member 44 and a pair of second recesses 72 engage with the third track following member 64.
  • the third track following member 64 is pivotably engaged in the second pair of recesses 72.
  • Each of the recesses of the first pair of recesses 70 has a curved extension.
  • the first track following member 44 can follow the first pair of recesses 70 as the first track following member 44 transits from the first portion 46 into the second portion 48 of the first guiding track 42 and moves along the curved or angled second portion 48 of the first guiding track 42 while the mounting member 66 is moved in parallel with the first plane 30. See e.g., Fig. 5.
  • Figs. 7a - 7c disclose an upper portion of the portable air treatment unit 2 shown in Figs. 2a and 2b.
  • the air treatment unit 2 is positioned in an ordinary operating position, which commonly is achieved with the air treatment unit 2 standing on a horizontal surface.
  • the air treatment unit 2 comprises a louver arrangement 20 as discussed above with reference to Figs. 3a - 6.
  • louver arrangement 20 is shown in a different angular position in relation to the housing 4.
  • the louver arrangement 20 may be positioned in one of the three shown positions during operation of the treatment unit 2.
  • the louver arrangement 20 may be positioned in intermediate positions between the shown positions during operation of the treatment unit 2.
  • the first louver portion 22 is arranged at an angle in relation to the housing 4 and the second louver portion 24 is arranged in its second position and angled in relation to the first louver portion 22.
  • the louver arrangement 20 with the second louver portion 24 arranged in its second position forms a curved guiding contour for the treated air being discharged from the outlet 10 of the treatment unit 2.
  • Figs. 7a - 7c the treated air discharged from the outlet 10 is indicated with broad arrows.
  • the treated air is directed substantially horizontally and/or upwardly to a smaller or larger extent.
  • the second louver portion 24 being in its second position provides an extended guiding contour for the treated air in comparison with when the second louver portion 24 is in its first position, see Figs. 8a and 8b.
  • a benefit with the second louver portion 24 in its second position and angled in relation to the first louver portion 22 is that the treated air can be discharged laterally from the outlet 10 and the treatment unit 2. Thus, treated air is discharged upwardly to a lesser degree. This promotes dispersion of treated air in the space where the treatment unit 2 is standing. The effect of the treatment unit 2, such as cooling, heating, etc., will accordingly, become apparent to people in the space quicker.
  • this discharge laterally from the outlet 10 is achieved with a low flow resistance.
  • Figs. 8a and 8b disclose an upper portion of the portable air treatment unit 2 shown in Figs. 2a and 2b and 7a - 7c.
  • the air treatment unit 2 is positioned in an ordinary operating position, which commonly is achieved with the air treatment unit 2 standing on a horizontal surface.
  • louver arrangement 20 is shown in a different angular position in relation to the housing 4.
  • the two angular positions are comparable to the angular positions shown in Figs. 7a and 7b.
  • the second louver portion 24 is arranged in its first position and thus, arranged within the outer periphery of the first louver portion 22. Moreover, the second louver portion 24 is arranged substantially in parallel with the first louver portion 22. Thus, the louver arrangement 20 forms a straight guide for the treated air being discharged from the treatment arrangement 20.
  • Figs. 8a and 8b the treated air discharged from the outlet 10 is indicated with broad arrows.
  • the first louver portion 22 fully opened position i.e., at a maximum angle in relation the housing 4 and the outlet 10, the treated air is discharged substantially upwardly.
  • the louver arrangement 20 may be utilised with the second louver portion 24 in its first position as shown in Figs. 8a and 8b.
  • An opening face of the outlet 10 extends in an outlet plane 26.
  • the outlet plane 26 is indicated with a dash-dotted line in Figs. 2a, 7a and 8a.
  • the outlet plane 26 may extends at an angle a within a range of 0 - 45 degrees of a horizontal plane when the air conditioning unit 2 is positioned in an ordinary operating position of the treatment unit 2. In this manner, there may be provided for the treated air to be discharged from the outlet 10, utilising the louver arrangement 20, in any direction between horizontally and vertically by directing the louver arrangement 20 accordingly in relation to the outlet plane 26.
  • a longitudinal direction L1 of the first louver portion 22 extends in parallel with the outlet plane 26, see Fig. 2a.

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Abstract

The disclosure concerns a louver arrangement (20) for a portable air treatment unit. The louverarrangement (20) comprises a first louver portion (22) having an outer periphery, a secondlouver portion (24) moveably connected to the first louver portion (22), and a drive arrangement(28) connected to the first louver portion (22). The drive arrangement (28) is configured todisplace the second louver portion (24) from a first position to a second position. In the firstposition, the second louver portion (24) is arranged within the outer periphery of the first louverportion (22). In the second position, at least a portion of the second louver portion (24) extendsbeyond the outer periphery of the first louver portion (22).

Description

LOUVER ARRANGEMENT AND PORTABLE AIR TREATMENT UNIT
TECHNICAL FIELD
The invention relates to a louver arrangement and to a portable air treatment unit.
BACKGROUND
Portable air treatment units of various kinds are known. Typically, a portable air treatment unit is movable by a person in order to be placed in a space, such a room, the air of which is to be treated in one or more ways. The portable air treatment unit may be e.g., carried or wheeled by the person moving the portable air treatment unit.
Air treatment may be performed for the purpose of providing an agreeable climate and/or change certain air properties, such as the cleanliness of air in a space, such as a room or small building.
Accordingly, an air treatment unit may provide one or more of air cooling, air heating, air filtering, dehumidification of air, humidification of air, etc.
A portable air treatment unit may be electrically powered and configured to be connected to mains power.
A common feature of portable air treatment units is that ambient air is drawn through an airflow path defined within the air treatment unit. Along the airflow path one or more treatment devices and/or treatment members affect one or more properties of the air being drawn through the airflow path.
A fan or other kind of displacement device is provided to draw ambient air through an inlet into the airflow path, move air along the airflow path, and discharge the treated air through an outlet of the airflow path. The outlet may be arranged at an upper portion of the air treatment unit. The treated air leaving the air treatment unit is dispersed in the space where the air treatment unit is standing and gradually alters one or more properties, such as temperature, cleanliness, and/or humidity of the air in the space.
The air treatment unit may comprise a so-called louver, by means of which the treated air is directed from the air treatment unit. An angle of the louver may be variable in order to change the angle of the flow of treated air from the air treatment unit into the surrounding space. Dispersion of the treated air into the space where the air treatment unit is standing thus, may be controlled at least to a certain degree.
EP 2835597 discloses an air conditioner. A louver/flap that adjusts an air direction is provided at a blow-out opening for temperature conditioned air. The flap includes a wide upper flap and a slightly narrower lower flap, that extend in the length direction of the air blow-out opening provided in the horizontal direction and that are coupled to form a single unit by joining pieces with a predetermined spacing between the flaps so as to be parallel to each other.
SUMMARY
It would be advantageous to improve conditions for distributing treated air from a portable air treatment unit. In particular, it would be desirable to enable a flexibility in the guiding of treated air from a portable air treatment unit. To better address one or more of these concerns, a louver arrangement and/or a portable air treatment unit having the features defined in the independent claims is provided.
According to an aspect, there is provided a louver arrangement for a portable air treatment unit. The louver arrangement comprises a first louver portion having an outer periphery, a second louver portion moveably connected to the first louver portion, and a drive arrangement connected to the first louver portion. The drive arrangement is configured to displace the second louver portion from a first position to a second position in relation to the first louver portion. In the first position, the second louver portion is arranged within the outer periphery of the first louver portion. In the second position, at least a portion of the second louver portion extends beyond the outer periphery of the first louver portion.
Since the louver arrangement comprises the first and second louver portions and since in the first position, the second louver portion is arranged within the outer periphery of the first louver portion and in the second position, at least a portion of the second louver portion extends beyond the outer periphery of the first louver portion - there is provided a compact louver arrangement that is versatile with respect to providing at least two different settings for guiding treated air from a portable air treatment unit.
More specifically, when the second louver portion is arranged in the second position, the length of the louver arrangement is increased along a flow direction of the treated air as it is discharged from the air treatment unit. Thus, the treated air can be discharged from the unit to better penetrate into ambient air than from an air treatment unit comprising a single louver portion of shorter length. An efficient dispersion of the treated air thus, can be achieved in the space where the treatment unit is standing. A high air comfort thus, can be provided quickly by the treatment unit.
Also, when the second louver portion is arranged within the outer periphery of the first louver portion i.e., in the first position, the louver arrangement is compact and thus, provides for it to be compact when arranged e.g., in a closed position in relation to a housing of the air treatment unit.
When the air treatment unit is not in use, the second louver portion can be retracted into the first position in relation to the first louver portion as to allow an outlet for treated air of the unit to be closed.
The second louver portion and the drive arrangement being connected to the first louver portion entail that the louver arrangement form one unit that as such is connectable to a portable air treatment unit. Thus, for instance, the louver arrangement can be connected via the first louver portion to the relevant air treatment unit. A power supply, such as an internal electric cord within the air treatment unit, may be connected to the drive arrangement for powering the same.
The louver arrangement may be configured to be connected to, or form part of, the portable air treatment unit.
The louver arrangement may be configured for directing treated air in at least two different directions from the air treatment unit during use thereof. Thus, dispersion of the treated air into the space where the air treatment unit is standing may be controlled.
Herein, the term guiding contour will be used for the extension of the louver arrangement, along which extension the treated air flows and by the shape of which extension the treated air is directed from the air treatment unit.
An angle of the first louver portion may be variable in relation to the air treatment unit in order to change the angle of the flow of treated air from the air treatment unit into the surrounding space. Also such variability of the angle of the first louver portion may alter the general dispersion of the treated air in the space where the air treatment unit is standing.
According to a further aspect there is provided a portable air treatment unit comprising a housing, wherein an airflow path for air to be treated extends through the housing. The airflow path has an inlet in the housing and an outlet in the housing. The portable air treatment unit comprises a louver arrangement according to any one of aspects and/or embodiments discussed herein arranged at the outlet of the airflow path.
Thus, there is provided a portable air treatment unit comprising a compact louver arrangement that is versatile with respect to providing at least two different settings for guiding treated air from the air treatment unit.
Accordingly, the louver arrangement provides for a portable air treatment unit, from which treated air can be discharged with better penetration into ambient air than from an air treatment unit comprising a simpler louver consisting of only one flap. A more efficient dispersion of the treated air thus, can be achieved in the space where the treatment unit is standing. A high air comfort thus, can be provided quickly by the treatment unit.
The portable air treatment unit may be configured for treating one or more properties of the air in a space, such as a room or a small building, where the portable air treatment unit is placed.
The portable air treatment unit is movable by a person in order to be placed in a space, the air of which is to be treated. The portable air treatment unit may be e.g., carried or wheeled by the person moving the portable air treatment unit.
Herein, the portable air treatment unit may alternatively be referred to as air treatment unit, treatment unit, or simply the unit.
The portable air treatment unit may provide one or more of:
- Air cooling, in which case the unit may comprises a vapour-compression refrigeration system, VCRS.
- Air heating, in which case the unit may comprise a heating element.
- Air filtering, in which case the unit may include a filter such as a porous filter and/or an active filter, such as an electrostatic filter.
- Air dehumidification, in which case the unit may comprises a vapour-compression refrigeration system, VCRS.
- Air humidification, in which case the unit may include inter alia a steam producing system.
Elements, systems, members, devices, etc., as such that treat the air in the air treatment unit are know and will not be discussed herein in any detail. Air that has been treated, such as cooled, heated, cleaned, dehumidified, humidified, etc., in the air treatment unit is herein referred to as treated air.
The portable air treatment unit may be electrically powered and configured to be connected to mains power.
A common feature of portable air treatment units is that ambient air is drawn through the airflow path defined within the air treatment unit. Along the airflow path one or more treatment devices and/or treatment members affect one or more properties of the air being drawn through the airflow path.
The treatment unit comprises a fan or other kind of displacement device arranged to draw ambient air through the inlet into the airflow path, move air along the airflow path, and discharge the treated air through the outlet of the airflow path.
The outlet may be arranged at an upper portion of the air treatment unit. The treated air discharged from the air treatment unit is dispersed in the space where the air treatment unit is standing and gradually alters one or more properties, such as temperature, cleanliness, and/or humidity of the air in the space.
According to embodiments, at least a portion of the first louver portion extends in a first plane and at least a portion of the second louver portion extends in a second plane. In the second position, the second plane may extend at an angle to the first plane. In this manner, a greater angular range with maintained low flow resistance as the treated air leaves the treatment unit may be achieved with the louver arrangement, in comparison with a simple louver consisting of only one flap. This means that the treated air may be distributed more efficiently within the space where the unit is standing e.g., in order to quickly improve air comfort therein.
For instance, in order to ensure a high performance in an air treatment unit with the outlet arranged at an upper portion thereof, a shallow i.e., a substantial horizontal, discharge of treated air can be provided without excessively reducing the discharge flow rate, which ensures a good penetration depth of the discharged air. Namely, with the second louver portion in the second position thus, providing a curved guiding contour of the louver arrangement, the louver arrangement can be positioned to provide the shallow discharge of treated air with the first louver portion angled more steeply upwardly than if the louver arrangement would only provide a straight guiding contour. According to embodiments, the drive arrangement may define a displacement path for the second louver portion, and the second louver portion may be displaceable from the first position along the displacement path to the second position. In this manner, it may be ensured that the second louver portion may be reliably moved from the first position to the second position and vice versa.
According to embodiments, the drive arrangement may comprise at least a first track forming member connected to the first louver portion. The first track forming member may form a first guide track. The second louver portion may comprise at least a first track follower configured to follow the first guide track. When the drive arrangement displaces the second louver portion from the first position to the second position, the first guide track and the first track follower may cause the second louver portion to follow the displacement path. In this manner, the second louver portion may be brought to follow the displacement path.
According to embodiments, the first guide track may comprise a straight first portion and a second portion angled or curved in relation to the first portion. The first track follower may be positioned in the second portion when the second louver portion is in the second position. In this manner, the second louver portion may be arranged at an angle to the first louver portion when the second louver portion is in the second position.
According to embodiments, the louver arrangement may comprise a second track forming member connected to the first louver portion. The second track forming member may form a second guide track. The second louver portion may comprise a second track follower configured to follow the second guide track. The second louver portion has a longitudinal extension extending between a first lateral side and a second lateral side of the second louver portion. The first track forming member may be arranged adjacent to the first lateral side and the second track forming member may be arranged adjacent to the second lateral side. In this manner, the second louver portion may be guided at two lateral side portions thereof as the second louver portion is moved from the first position to the second position. Thus, a steady guiding of the second louver portion may be provided.
According to embodiments, the second lateral side of the second louver portion may be arranged adjacent to the second track forming member with a play between the second lateral side and the second track forming member. In this manner, the second louver portion may be guided as it is moved between the first and second positions without the second louver portion accidentally being locked in relation to the first louver portion e.g., by pinching engagement between the second louver portion and the second track forming member. According to embodiments, the second louver portion may be connected to the drive arrangement via the first track follower. In this manner, the drive arrangement may move the second louver portion between the first and second positions by engagement with the first track follower of the second louver portion.
According to embodiments of the portable air treatment unit, the outlet of the airflow path may be arranged at an upper portion of the housing when the portable air treatment unit is positioned on a horizontal surface in an ordinary operating position of the portable air treatment unit. In this manner, treated air may be efficiently discharged into the space where the air treatment unit is standing.
Further features of, and advantages with, the invention will become apparent when studying the appended claims and the following detailed description.
BRIEF DESCRIPTION OF THE DRAWINGS
Various aspects and/or embodiments of the invention, including its particular features and advantages, will be readily understood from the example embodiments discussed in the following detailed description and the accompanying drawings, in which:
Fig. 1 schematically illustrates a cross section through a portable air treatment unit according to embodiments,
Figs. 2a and 2b illustrate a portable air treatment unit according to embodiments,
Figs. 3a - 4e illustrate a louver arrangement according to embodiments,
Fig. 5 shows the louver arrangement of Figs. 3a - 4e in an exploded view,
Fig. 6 schematically shows embodiments of a louver arrangement, and
Figs. 7a - 8b disclose an upper portion of a portable air treatment unit.
DETAILED DESCRIPTION
Aspects and/or embodiments of the invention will now be described more fully. Like numbers refer to like elements throughout. Well-known functions or constructions will not necessarily be described in detail for brevity and/or clarity.
Fig. 1 schematically illustrates a cross section through a portable air treatment unit 2 according to embodiments. A person can carry e.g., by one or more built in handles (not shown), and/or wheel e.g., on built-in wheels (not shown) the portable air treatment unit 2 into a desired position in a space, the air of which is to be treated.
The air treatment unit 2 comprises a housing 4 and an airflow path 6. The airflow path 6 extends through the housing 4. The airflow path 6 has an inlet 8 in the housing 4 and an outlet 10 in the housing 4. The inlet 8 forms an inlet opening of the airflow path 6. The outlet 10 forms an outlet opening of the airflow path 6.
A fan or other displacement unit 12 is arranged along the airflow path 6 and configured to draw ambient air to be treated into the airflow path 6 via the inlet 8 and to discharge treated air from the airflow path 6 via the outlet 10.
In the illustrated embodiments, the outlet 10 of the airflow path 6 is arranged at an upper portion of the housing 4 when the air treatment unit 2 is positioned on a horizontal surface in an ordinary operating position of the unit 2. Thus, the treated air which is discharged from the treatment unit 2 may be discharge from a position that favours dispersion of the treated air in the space where the unit 2 is standing.
Moreover, with the outlet 10 at an upper portion of the housing 4, a compact air treatment unit may be provided when the fan 12 comprises a forward curved centrifugal fan.
The air treatment unit 2 further comprises one or more of passive elements, active elements, systems, members, devices, etc. configured for treating the air that is drawn through the airflow path 6.
Such elements, systems, members, devices, etc., herein generally depicted with reference number 14, include one or more treatment devices and/or treatment members 14’ arranged in and/or adjacent the airflow path 6.
Exemplifying the air treatment unit 2 in the form of a portable air conditioning unit, the system 14 would be a vapour-compression refrigeration system, VCRS.
As is well known, a VCRS includes an evaporator, a compressor, a condenser, and an expansion device. A refrigerant circulates in the VCRS as it evaporates at a lower pressure level in the evaporator, is compressed to a higher pressure level in the compressor and condensed in the condenser. The liquid refrigerant passes from the higher pressure level to the lower pressure level via the expansion device.
Ambient air in the space to be cooled by the unit 2 is drawn through the airflow path 6. The treatment device 14’ is in the case of an AC unit the evaporator of the VCRS. The air passing the evaporator 14’ is cooled as heat is drawn therefrom when the refrigerant evaporates in the evaporator. The cooled i.e. , treated, air flows along the airflow path 6 to the outlet 10.
Waste heat from the VCRS, emanating from the condenser, is disposed of outside the space to be cooled. For instance, a hose (not shown) may be used to conduct heated air, which is the carrier of the waste heat, out of the space where the unit 2 is standing.
Accordingly, depending on the kind of air treatment provided by the air treatment unit 2, the treatment device 14’ of the element/system/member/device 14, may comprise one or more of an evaporator, a heating element, a filter, a steam source, etc.
The airflow path 6 includes conduit portions connecting the various components along the airflow path 6 with the inlet 8, each other, and the outlet 10.
The portable air treatment unit 2 comprises a louver arrangement 20 at the outlet 10 of the airflow path 6. The louver arrangement 20 is discussed in further detail below with reference to Figs. 2a - 8b.
The louver arrangement 20 is configured for directing or guiding the treated air from the outlet 10 into the space where the unit 2 is standing. The dispersion of the treated air in the space where the air treatment unit is standing thus, can be controlled at least to a certain degree. With the herein discussed louver arrangement 20 according to aspects and/or embodiments, the dispersion is improved over a that provided by a more simple type of louver.
An angle of the louver arrangement 20 is variable in relation to the housing 4. Thus, treated air discharged from the outlet 10 can be directed in different directions from the air treatment unit 2 into the surrounding space.
When the air treatment unit 2 is not in operation, the louver arrangement 20 may be angled such that it closes the outlet 10. Figs. 2a and 2b illustrate a portable air treatment unit 2 according to embodiments. The air treatment unit 2 may be a treatment unit 2 as discussed above with reference to Fig. 1 .
Accordingly, the treatment unit 2 comprises a housing 4, an airflow path with an outlet 10, and a louver arrangement 20 arranged at the outlet 10.
The louver arrangement 20 comprises a first louver portion 22 and a second louver portion 24, which is moveably connected to the first louver portion 22. The second louver portion 24 is displaceable in relation to the first louver portion 22.
The louver arrangement 20 and the displacement of the second louver portion 24 in relation to the first louver portion 22 is discussed further below with reference to Figs. 3a - 8b.
However, in a second position of the second louver portion 24, shown in both Fig. 2a and 2b, at least a portion of the second louver portion 24 extends beyond an outer periphery of the first louver portion 22.
In Figs. 2a and 2b, the louver arrangement 20 is shown at two different angles in relation to the housing 4.
More specifically, the first louver portion 22 is connected to the housing 4 and can be positioned at different angles in relation to the housing 4. Since the second louver portion 24 is connected to the first louver portion 22, also the second louver portion 24 will be arranged at different angles in relation to the housing 4 together with the first louver portion 22.
The first louver portion 22 may be driven by a controllable automated drive in order to be positioned at different angular positions in relation to the housing 4. The automated drive may be controlled by a user of the treatment unit 2 e.g., by adjusting a target setting for the air treatment device, such as a target temperature, target humidity, etc.
A control unit of the air treatment unit 2 may be configured to change the angular setting of the louver arrangement 20 depending on the treatment to be performed in order to reach the target setting. Alternatively or additionally, a user may provide angular input to the automated drive for setting the angle of the louver arrangement 20.
According to alternative embodiments, the first louver portion 22 may be manually set at different angular positions in relation to the housing 4 by a user physically moving the first louver portion 22 or a control lever, control wheel, etc., mechanically connected to the first louver portion 22.
In Fig. 2a, the first louver portion 22 is shown in a fully opened position i.e. , at a maximum angle in relation the housing 4 and the outlet 10. As mentioned above, at least a portion of the second louver portion 24 extends beyond an outer periphery of the first louver portion 22. Moreover, as will be discussed in further detail below, the second louver portion 24 is angled in relation to the first louver portion 22.
In Fig. 2b, the first louver portion 22 is shown at an angle in between the fully opened position and a closed position in which the outlet 10 is closed by the louver arrangement 20. Again, the second louver portion 24 is angled in relation to the first louver portion 22.
Figs. 3a - 5 illustrate a louver arrangement 20 according to embodiments. The louver arrangement 20 is a louver arrangement 20 for a portable air treatment unit as discussed above with reference to Figs. 1 - 2b.
In Figs. 3a - 3e and Figs. 4a - 4e, respectively, the louver arrangement 20 is shown in an isometric view, a front view, a top view, and two side views. In Fig. 5, the louver arrangement 20 is shown in an exploded view. In Figs. 3a - 3e, the louver arrangement 20 is arranged with a second louver portion 24 in a first position in relation to a first louver portion 22. In Figs. 4a - 4e, the louver arrangement 20 is arranged with the second louver portion 24 in a second position in relation to the first louver portion 22.
Unless specifically stated, in the following reference is made to all of Figs. 3a - 5.
The louver arrangement 20 comprises a first louver portion 22 having an outer periphery, a second louver portion 24, which is moveably connected to the first louver portion 22, and a drive arrangement 28. The drive arrangement 28 is connected to the first louver portion 22. The drive arrangement 28 is configured to displace the second louver portion 24 from a first position (shown in Figs. 3a - 3e) to a second position (shown in Figs. 4a - 4e) in relation to the first louver portion 22.
The drive arrangement 28 is also configured to displace the second louver portion 24 from the second position back to the first position. In the first position, the second louver portion 24 is arranged within the outer periphery of the first louver portion 22. In the second position, at least a portion of the second louver portion 24 extends beyond the outer periphery of the first louver portion 22. In this manner, with the second louver portion 24 in its second position, the louver arrangement 20 provides a longer guiding contour for treated air than when the second louver portion 24 is in its first position. Since the drive arrangement 28 is configured to displace the second louver portion 24 between the first and second positions, the louver arrangement 20 can be altered between providing a longer and a shorter guiding contour.
In general the longer guiding contour provides a more precise guiding of the treated air in comparison with a shorter guiding contour. If according to some embodiments, the second louver portion 24 is angled in relation to the first louver portion 22 in the second position of the second louver portion 24, further possibilities in guiding the treated air are opened up.
In the first position of the second louver portion 24, the louver arrangement 20 is compact and thus, occupies a smaller space. This may be beneficial when the relevant air treatment unit is not in use and the louver arrangement 20 is arranged in an inactive position e.g., in a closed position. However, also with the second louver portion 24 in its first position the louver arrangement 20 may be utilised for directing treated air discharged from the air treatment unit. The shorter guiding contour may be utilised in some operational situations of the air treatment unit.
The louver arrangement 20 is versatile since it in addition to the short guiding contour also provides the longer guiding contour with the second louver portion 24 in its second position and thus, providing more precise guiding of treated air and better penetration of the treated air into ambient air. This promotes dispersion of the treated air in the space where the treatment unit is standing.
A control unit of the relevant air treatment unit may be configured to control the drive arrangement 28 for moving the second louver portion 24. The control unit may be controlled by a user of the treatment unit e.g., by adjusting a target setting for the air treatment device, such as a target temperature, target humidity, etc. Alternatively or additionally, a user may provide input to the control unit for setting the first or second position of the second louver portion 24. At least a portion of the first louver portion 22 extends in a first plane 30 and at least a portion of the second louver portion 24 extends in a second plane 32. The first and second planes 30, 32 are indicated with broken lines in some of Figs. 3a - 4e.
In the illustrated embodiments, in the second position, see Figs. 4a - 4e, the second plane 32 extends at an angle p to the first plane 30, see Fig. 4d.
A curved guiding contour is thus, provided by the louver arrangement 20 with the second louver portion 24 in its second position.
Accordingly, the first louver portion 22 can be angled in relation to an outlet of an airflow path of the air treatment unit such that the first louver portion 22 provides a low flow resistance for the discharged treated air. And with the second louver portion 24 in its second position, the treated air can be directed in a more horizontal direction than with a straight guiding contour. Therefore, conditions are provided for efficient dispersion of the treated air within the space where the unit is standing.
See also below with reference to Figs. 7a -8b for the directing of treated air discharged from an air treatment unit.
In the first position of the second louver portion 24, see Figs. 3a - 3e, the second plane 32 is arranged substantially in parallel with the first plane 20. In this manner, the louver arrangement 20 is compact when the second louver portion 24 is in its first position.
In the embodiments illustrated in Figs. 3a - 5, the drive arrangement 28 comprises a motor 34 and a linkage 36 interconnecting the motor 34 with the second louver portion 24.
Alternative ways of interconnecting the motor 34 of the drive arrangement 28 may be utilised and the manner in which the rotational motion of the motor 34 is converted into a translational motion of the second louver portion 24 may accordingly, be performed in various different ways.
According to some embodiments, as schematically shown in the side view of Fig. 6 of a louver arrangement 20, the drive arrangement 28 may comprise a motor 34 and a leadscrew 38 interconnecting the motor 34 with the second louver portion 24. Irrespective of how the rotational motion of the motor 34 is converted into a translational motion of the second louver portion 24, the drive arrangement 28 defines a displacement path for the second louver portion 24, and the second louver portion 24 is displaceable from the first position along the displacement path to the second position.
The defined displacement path ensures that the second louver portion 24 is reliably moved from the first position to the second position and also reliably moved from the second position back to the first position.
The drive arrangement 28 comprises at least a first track forming member 40 connected to the first louver portion 22. The first track forming member 40 forms a first guide track 42. The second louver portion 24 comprise at least a first track follower 44 configured to follow the first guide track 42. See e g., Figs. 3a, 4a, 4b, and 5.
Accordingly, the second louver portion 24 is brought to follow the displacement path when the drive arrangement 28 displaces the second louver portion 24 from the first position to the second position as the first track follower 44 follows the first guide track 42. Conversely, the second louver portion 24 follows the displacement path while it is moved by the drive arrangement 28 from the second position to the first position as the first track follower 44 follows the first guide track 42.
The first guide track 42 comprises a straight first portion 46 and a second portion 48 angled or curved in relation to the first portion 46, see Fig. 5. The first track follower 44 is positioned in the second portion 46 when the second louver portion 24 is in the second position, see Fig. 4b. Thus, the second plane 32 is arranged at an angle to the first plane 30 when the second louver portion 24 is in the second position, see Figs. 4a - 4e.
When the second louver portion 24 is in its first position, the first track follower 44 is positioned in the first portion 46 of the first guide track 42. Thus, the second plane 32 is arranged in parallel with the first plane 30 when the second louver portion 24 is in the first position, see Figs. 3a - 3e.
The louver arrangement 20 comprises a second track forming member 50 connected to the first louver portion 22. The second track forming member 50 forms a second guide track 52. The second louver portion 24 comprises a second track follower 54 configured to follow the second guide track 52. The second track forming member 50 may be seen to form part of the drive arrangement 28. In the illustrated embodiments, the drive arrangement comprises one motor 34 and one linkage 36 or leadscrew 38. According to alternative embodiments, the drive arrangement may comprise more than one motor, such as two motors, and/or more than one linkage or leadscrew. For instance, one motor and one linkage or leadscrew may be arranged at each of the first and second track forming members 40, 50.
The second louver portion 24 has a longitudinal extension L2 extending between a first lateral side 56 and a second lateral side 58 of the second louver portion 24. The first track forming member 40 is arranged adjacent to the first lateral side 56 and the second track forming member 50 is arranged adjacent to the second lateral side 58. See Figs. 3b, 4b, and 5.
Thus, guiding of the second louver portion 24 at its two lateral side portions 56, 58 is provided. A stable guiding of the second louver portion 24 as it is moved between its first and second positions is provided.
The first louver portion 22 has a longitudinal extension L1 extending between lateral sides of the first louver portion 22, see Figs. 4b/4c.
Similarly to the first guide track 42, the second guide track 52 comprises a straight portion 60 and a further portion 62 angled or curved in relation to the straight portion 60, see Fig. 5. Accordingly, the second track follower 54 is positioned in the further portion 62 when the second louver portion 24 is in the second position, see Fig. 4a.
At least in the first position of the second louver portion 24, the second lateral side 58 of the second louver portion 24 is arranged adjacent to the second track forming member 50 with a play between the second lateral side 58 and the second track forming member 50. Thus, even if the second louver portion 24 would be slightly angled in relation to the second track forming member 50, the second louver portion 24 can be securely guided as it is moved between the first and second positions without the second lateral side 58 coming into pinching engagement with the second track forming member 50.
According to some embodiments, the play between the second lateral side 58 and the second track forming member 50 may be within a range of 0.1 - 2 % of a length of the second louver portion 24 along the longitudinal extension L2. Mentioned purely as an example, the length of the second louver portion 24 along the longitudinal extension L2 may be approximately 300 mm and the play may be 0.3 mm.
According to some embodiments, such as the illustrated embodiments, the first track follower 44 may extend from the first lateral side 56 of the second louver portion 24 in parallel with the second plane 32, and the second track follower 54 may extend from the second lateral side 58 in parallel with the second plane 32. In this manner, the first and second track followers are arranged at a far distance from each other and thus, a stable guiding of the second louver portion 24 as it is moved between first and second positions is achieved.
According to the illustrated embodiments, the second louver portion 24 comprises a third track follower 64 extending from the first lateral side 56 of the second louver portion 24 in parallel with the second plane 32 and in parallel with the first track follower 44, see e.g., Figs. 4b and 5.
The third track follower 64 is configured to follow the first guide track 42. Since the first and third track followers 44, 64 are arranged at the first lateral side 56 of the second louver portion 24 and both are configured to follow the first guide track 42, the second louver portion 24 is securely positioned and accordingly, securely guide at its first lateral side 56. Thus, the second louver portion 24 can be reliably moved between its first and second positions.
According to embodiments, the third track follower 64 is positioned in the first portion 46 of the first guide track 42 or in the second portion 48 of the first guide track 42 when the second louver portion 24 is in the second position. Thus, the second plane 32 is arranged at an angle P to the first plane 30 when the second louver portion 24 is in the second position, see Figs. 4a - 4e.
The third track follower 64 is positioned in the first portion 46 of the first guide track 42 when the second louver portion 24 is in the first position. Thus, the second plane 32 is arranged in parallel with the first plane 30 when the second louver portion 24 is in the first position, see Figs. 3a - 3e.
The second louver portion 24 is connected to the drive arrangement 28 via the first track follower 44. Thus, motion caused by the drive arrangement 28 can be transferred to the second louver portion 24 to move it between the first and second positions. For instance, a mounting member 66 of the driving arrangement 28 may connect the motor 34 via the linkage 36 with the first track follower 44 and the second louver portion 24, see e.g., Figs. 3a, 4a, and 5.
According to some embodiments, such as the illustrated embodiments, the first and third track followers 44, 64 extend through the first track forming member 40. The first and third track followers 44, 64 are secured to the drive arrangement 28 by a mounting member 66. The mounting member 66 connects to the first and third track followers 44, 64 on opposite sides of the first track forming member 40. In this manner, the second louver portion 24 may be connected securely to the first track forming member 40 and the first louver portion 22.
According to embodiments, the mounting member 66 is arranged in sliding abutment with the first track forming member 40. In this manner, the second louver portion 24 is securely held against the first track forming member 40 and accordingly, also held securely in relation to the first louver portion 22.
Due to the mounting member 66 connecting to the first and third track followers 44, 64 on opposite sides of the first track forming member 40 and the mounting member 66 being arranged in abutment with the first track forming member 40, the second louver portion 24 is prevented from changing position to any substantial extent within the second plane 32. Thus, accidental locking of the second louver portion 24 in relation to the first louver portion 22 is avoided.
Further, in combination with the above discussed play between the second lateral side 58 and the second track forming member 50, the mounting member 66 connecting to the first and third track followers 44, 64 on opposite sides of the first track forming member 40 and the mounting member 66 being arranged in abutment with the first track forming member 40 - possible minor positional changes of the second louver portion 24 within the second plane 32 will still not lead to accidental locking of the second louver portion 24 in relation to the first louver portion 22.
In the illustrated embodiments, the mounting member 66 is held in place by a cover member 68. The mounting member 66 is arranged between the first track forming member 40 and the cover member 68. The mounting member 66 is arranged to be slidable in parallel with the first plane 30 and thus, displacing the second louver portion 24 between the first and second positions. See e g., Figs. 3a, 4a, and 5. A pair of first recesses 70 of the mounting member 66 engage with the first track following member 44 and a pair of second recesses 72 engage with the third track following member 64. The third track following member 64 is pivotably engaged in the second pair of recesses 72. Each of the recesses of the first pair of recesses 70 has a curved extension. Thus, the first track following member 44 can follow the first pair of recesses 70 as the first track following member 44 transits from the first portion 46 into the second portion 48 of the first guiding track 42 and moves along the curved or angled second portion 48 of the first guiding track 42 while the mounting member 66 is moved in parallel with the first plane 30. See e.g., Fig. 5.
Figs. 7a - 7c disclose an upper portion of the portable air treatment unit 2 shown in Figs. 2a and 2b. In Figs. 7a - 7c, the air treatment unit 2 is positioned in an ordinary operating position, which commonly is achieved with the air treatment unit 2 standing on a horizontal surface.
The air treatment unit 2 comprises a louver arrangement 20 as discussed above with reference to Figs. 3a - 6.
In each of Figs. 7a - 7c, the louver arrangement 20 is shown in a different angular position in relation to the housing 4. The louver arrangement 20 may be positioned in one of the three shown positions during operation of the treatment unit 2. Also, the louver arrangement 20 may be positioned in intermediate positions between the shown positions during operation of the treatment unit 2.
The first louver portion 22 is arranged at an angle in relation to the housing 4 and the second louver portion 24 is arranged in its second position and angled in relation to the first louver portion 22. Thus, the louver arrangement 20 with the second louver portion 24 arranged in its second position forms a curved guiding contour for the treated air being discharged from the outlet 10 of the treatment unit 2.
In Figs. 7a - 7c, the treated air discharged from the outlet 10 is indicated with broad arrows. As can be seen, depending on the position of the louver arrangement 20 in relation to the housing 4, the treated air is directed substantially horizontally and/or upwardly to a smaller or larger extent. The second louver portion 24 being in its second position provides an extended guiding contour for the treated air in comparison with when the second louver portion 24 is in its first position, see Figs. 8a and 8b.
A benefit with the second louver portion 24 in its second position and angled in relation to the first louver portion 22 is that the treated air can be discharged laterally from the outlet 10 and the treatment unit 2. Thus, treated air is discharged upwardly to a lesser degree. This promotes dispersion of treated air in the space where the treatment unit 2 is standing. The effect of the treatment unit 2, such as cooling, heating, etc., will accordingly, become apparent to people in the space quicker.
Moreover, this discharge laterally from the outlet 10 is achieved with a low flow resistance.
Importantly, also mainly horizontal discharge of treated air from the unit 2 can be achieved with low flow resistance, see Figs. 7b and 7c. Namely, due to the second portion 24 being angled in relation to the first louver portion 22, the guiding contour in the horizontal direction is provided at a large angle of the first louver portion 22 in relation to the housing 4 and the opening 10.
Figs. 8a and 8b disclose an upper portion of the portable air treatment unit 2 shown in Figs. 2a and 2b and 7a - 7c. In Figs. 8a and 8b, the air treatment unit 2 is positioned in an ordinary operating position, which commonly is achieved with the air treatment unit 2 standing on a horizontal surface.
In each of Figs. 8a and 8b, the louver arrangement 20 is shown in a different angular position in relation to the housing 4. The two angular positions are comparable to the angular positions shown in Figs. 7a and 7b.
The second louver portion 24 is arranged in its first position and thus, arranged within the outer periphery of the first louver portion 22. Moreover, the second louver portion 24 is arranged substantially in parallel with the first louver portion 22. Thus, the louver arrangement 20 forms a straight guide for the treated air being discharged from the treatment arrangement 20.
In Figs. 8a and 8b, the treated air discharged from the outlet 10 is indicated with broad arrows. As can be seen in Fig. 8a, with the first louver portion 22 fully opened position i.e., at a maximum angle in relation the housing 4 and the outlet 10, the treated air is discharged substantially upwardly.
Under certain operating conditions or in order to achieve certain discharge properties or certain dispersion properties of the discharged air, the louver arrangement 20 may be utilised with the second louver portion 24 in its first position as shown in Figs. 8a and 8b.
An opening face of the outlet 10 extends in an outlet plane 26. The outlet plane 26 is indicated with a dash-dotted line in Figs. 2a, 7a and 8a. According to some embodiments, the outlet plane 26 may extends at an angle a within a range of 0 - 45 degrees of a horizontal plane when the air conditioning unit 2 is positioned in an ordinary operating position of the treatment unit 2. In this manner, there may be provided for the treated air to be discharged from the outlet 10, utilising the louver arrangement 20, in any direction between horizontally and vertically by directing the louver arrangement 20 accordingly in relation to the outlet plane 26.
A longitudinal direction L1 of the first louver portion 22 extends in parallel with the outlet plane 26, see Fig. 2a.
It is to be understood that the foregoing is illustrative of various example embodiments and that the invention is defined only by the appended claims. A person skilled in the art will realize that the example embodiments may be modified, and that different features of the example embodiments may be combined to create embodiments other than those described herein, without departing from the scope of the invention, as defined by the appended claims.

Claims

1 . A louver arrangement (20) for a portable air treatment unit (2), the louver arrangement (20) comprising a first louver portion (22) having an outer periphery, a second louver portion (24) moveably connected to the first louver portion (22), and a drive arrangement (28) connected to the first louver portion (22), wherein the drive arrangement (28) is configured to displace the second louver portion (24) from a first position to a second position in relation to the first louver portion (22), wherein in the first position, the second louver portion (24) is arranged within the outer periphery of the first louver portion (22), and wherein in the second position, at least a portion of the second louver portion (24) extends beyond the outer periphery of the first louver portion (22).
2. The louver arrangement (20) according to claim 1 , wherein at least a portion of the first louver portion (22) extends in a first plane (30) and at least a portion of the second louver portion (24) extends in a second plane (32), and wherein in the second position, the second plane (32) extends at an angle to the first plane (30).
3. The louver arrangement (20) according to claim 2, wherein in the first position of the second louver portion (24), the second plane (32) is arranged substantially in parallel with the first plane (30).
4. The louver arrangement (20) according to any one of the preceding claims, wherein the drive arrangement (28) defines a displacement path for the second louver portion (24), and wherein the second louver portion (24) is displaceable from the first position along the displacement path to the second position.
5. The louver arrangement (20) according to claim 4, wherein the drive arrangement (28) comprises at least a first track forming member (40) connected to the first louver portion (22), wherein the first track forming member (40) forms a first guide track (42), wherein the second louver portion (24) comprises at least a first track follower (44) configured to follow the first guide track (42), and wherein when the drive arrangement (28) displaces the second louver portion (24) from the first position to the second position, the first guide track (42) and the first track follower (44) cause the second louver portion (24) to follow the displacement path.
6. The louver arrangement (20) according to claim 5, wherein the first guide track (42) comprises a straight first portion (46) and a second portion (48) angled or curved in relation to the first portion (46), and wherein the first track follower (44) is positioned in the second portion (48) when the second louver portion (24) is in the second position.
7. The louver arrangement (20) according to claim 5 or 6, comprising a second track forming member (50) connected to the first louver portion (22), wherein the second track forming member (50) forms a second guide track (52), wherein the second louver portion (24) comprises at a second track follower (54) configured to follow the second guide track (52), wherein the second louver portion (24) has a longitudinal extension (L2) extending between a first lateral side (56) and a second lateral side (58) of the second louver portion (24), and wherein the first track forming member (40) is arranged adjacent to the first lateral side (56) and the second track forming member (50) is arranged adjacent to the second lateral side (58).
8. The louver arrangement (20) according to claim 7, wherein the second lateral side (58) of the second louver portion (24) is arranged adjacent to the second track forming member (50) with a play between the second lateral side (58) and the second track forming member (50).
9. The louver arrangement (20) according to claim 8, wherein the play between the second lateral side (58) and the second track forming member (50) is within a range of 0.1 - 2 % of a length of the second louver portion (24) along the longitudinal extension (L2).
10. The louver arrangement (20) according to any one of claim 7 - 9, wherein the first track follower (44) extends from the first lateral side (56) of the second louver portion (24) in parallel with the second plane (32), and wherein the second track follower (54) extends from the second lateral side (58) in parallel with the second plane (32).
11. The louver arrangement (20) according to any one of claims 7 - 10, wherein the second louver portion (24) comprises a third track follower (64) extending from the first lateral side (56) of the second louver portion (24) in parallel with the second plane (32) and in parallel with the first track follower (44)
12. The louver arrangement (20) according to claim 11 , wherein the third track follower (64) is positioned in the first portion (46) of the first guide track (42) or in the second portion (48) of the first guide track (42) when the second louver portion (24) is in the second position.
13. The louver arrangement (20) according to any one of claims 5 - 12, wherein the second louver portion (24) is connected to the drive arrangement (28) via the first track follower (44).
14. The louver arrangement (20) according to claim 11 or 12, wherein the first and third track followers (44, 64) extend through the first track forming member (40), and wherein the first and third track followers (44, 64) are secured to the drive arrangement (28) by a mounting member (66), the mounting member (66) connecting to the first and third track followers (44, 64) on opposite sides of the first track forming member (40).
15. The louver arrangement (20) according to claim 14, wherein the mounting member (66) is arranged in sliding abutment with the first track forming member (40).
16. The louver arrangement (20) according to any one of the preceding claims, wherein drive arrangement (28) comprises a motor (34) and a linkage (36) interconnecting the motor (36) with the second louver portion (24).
17. The louver arrangement (20) according to any one of claims 1 - 15, wherein drive arrangement (28) comprises a motor (34) and a leadscrew (38) interconnecting the motor (34) with the second louver portion (24).
18. A portable air treatment unit (2) comprising a housing (4), wherein an airflow path (6) for air to be treated extends through the housing (4), wherein the airflow path (6) has an inlet (8) in the housing (4) and an outlet (10) in the housing (4), and wherein the portable air treatment unit (2) comprises a louver arrangement (20) according to any one of the preceding claims arranged at the outlet (10) of the airflow path (6).
19. The portable air treatment unit (2) according to the preceding claim, wherein the outlet (10) of the airflow path (6) is arranged at an upper portion of the housing (4) when the portable air treatment unit (2) is positioned on a horizontal surface in an ordinary operating position of the portable air treatment unit (2).
20. The portable air treatment unit (2) according to the preceding claim, wherein an opening face of the outlet (10) extends in an outlet plane (26), and wherein the outlet plane (26) extends at an angle (a) within a range of 0 - 45 degrees of a horizontal plane when the portable air conditioning unit (2) is positioned in the ordinary operating position.
21. The portable air treatment unit (2) according to the preceding claim, wherein a longitudinal direction (L1) of the first louver portion (22) extends in parallel with the outlet plane (26).
EP22729132.5A 2022-05-12 2022-05-12 Louver arrangement and portable air treatment unit Pending EP4522922A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2022/062931 WO2023217376A1 (en) 2022-05-12 2022-05-12 Louver arrangement and portable air treatment unit

Publications (1)

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EP4522922A1 true EP4522922A1 (en) 2025-03-19

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EP (1) EP4522922A1 (en)
WO (1) WO2023217376A1 (en)

Citations (1)

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WO2016133261A1 (en) * 2015-02-18 2016-08-25 삼성전자주식회사 Air conditioner

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Publication number Priority date Publication date Assignee Title
WO2013035236A1 (en) * 2011-09-08 2013-03-14 パナソニック株式会社 Air conditioner
JP6320701B2 (en) 2013-08-02 2018-05-09 三菱重工サーマルシステムズ株式会社 Air conditioner
CN204176860U (en) * 2014-09-16 2015-02-25 广东美的集团芜湖制冷设备有限公司 Air-conditioner
US12560352B2 (en) * 2020-08-24 2026-02-24 Electrolux Appliances Aktiebolag Dual louver arrangement
CN112944461A (en) * 2021-03-18 2021-06-11 珠海格力电器股份有限公司 Air guide mechanism for air conditioner, air conditioner and control method

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
WO2016133261A1 (en) * 2015-02-18 2016-08-25 삼성전자주식회사 Air conditioner

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