EP3715730A1 - In eine raumdecke eingebettete klimaanlage - Google Patents

In eine raumdecke eingebettete klimaanlage Download PDF

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Publication number
EP3715730A1
EP3715730A1 EP20157694.9A EP20157694A EP3715730A1 EP 3715730 A1 EP3715730 A1 EP 3715730A1 EP 20157694 A EP20157694 A EP 20157694A EP 3715730 A1 EP3715730 A1 EP 3715730A1
Authority
EP
European Patent Office
Prior art keywords
air
deflector plate
surface portion
direction deflector
projections
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
EP20157694.9A
Other languages
English (en)
French (fr)
Inventor
Akihiro Shigeta
Shougo Shimizu
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.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
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 Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Publication of EP3715730A1 publication Critical patent/EP3715730A1/de
Pending legal-status Critical Current

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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
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/072—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser of elongated shape, e.g. between ceiling panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • 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
    • 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
    • F24F13/081—Air-flow control members, e.g. louvres, grilles, flaps or guide plates for guiding air around a curve
    • 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
    • F24F13/15—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre with parallel simultaneously tiltable lamellae
    • 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
    • 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
    • F24F13/20—Casings or covers

Definitions

  • the present invention relates to an air direction deflector plate provided as an air direction control means at an exit of each vent, for example, in a ceiling embedded air conditioner including a plurality of air outlet vents.
  • a ceiling embedded air conditioner of this type there is conventionally known a ceiling embedded air conditioner 100 that is made up, as shown in Fig. 6 , of a casing 101 and a decoration panel 105 provided at a bottom surface of the casing 101 and including a plurality of air outlet vents 102, an air inlet vent 103, and air direction deflector plates 104 (refer to, for example, Patent Literature 1, that is, Japanese Patent Laid-Open No. 2000-205642 ).
  • Fig. 7A is a partially cross-sectional view of the conventional ceiling embedded air conditioner described in the patent document described above taken along a line X-X' in Fig. 6 , showing a portion near an air outlet vent, which is in use, in the decoration panel.
  • Fig. 7B is a partially cross-sectional view of the conventional ceiling embedded air conditioner described in the patent document described above taken along the line X-X' in Fig. 6 , showing a portion near an air outlet vent, which is not in use, in the decoration panel.
  • an internal air path 102a an outlet air cut-off member 106, which is provided on an upstream side of the air outlet vent 102 which is not in use, and a substantially flat air direction deflector plate 104, which is provided near a surface of the decoration panel 105 at the air outlet vent 102 so as to close totally the air outlet vent 102 when it is not in use, are provided near each of the air outlet vents 102 in the decoration panel 105, whereby whether the air outlet vents 102 are in use or not can easily be determined from an external appearance of the decoration panel 105, and the direction of air can be adjusted at each of the air outlet vents 102.
  • the comfortableness for a person and a place can be improved.
  • a ceiling embedded air conditioner including an air outlet vent, and in the ceiling embedded air conditioner, the air outlet vent includes an inner air path and an outer air path, the inner air path is made up of a flat surface portion on an upstream side and a curved surface portion on a downstream side, and a plurality of projections are provided at an end portion of the curved surface portion.
  • an air flow colliding with the projection at the air outlet vent generates a longitudinal vortex and flows along a front surface portion (a lower surface side) of the air direction deflector plate.
  • an air flow flowing in a substantially vertical direction from an upstream of the air outlet vent is allowed to let out while being guided from the inner air path in the air outlet vent towards the air direction deflector plate.
  • the air direction deflector plate opens at a small angle during a cooling operation, the air is allowed to flow along the air direction deflector plate, whereby the generation of condensation can be prevented which would otherwise be caused by air flowing separate from the front surface portion (the lower surface side) of the air direction deflector plate during such a cooling operation.
  • a ceiling embedded air conditioner including a casing embedded in a ceiling, a decoration panel provided at a bottom surface of the casing, an air inlet vent provided in the decoration panel to let inside air in an inside of a room into an interior of the casing, an air outlet vent configured to let the air into the interior of the casing from the air inlet vent out into the inside of the room, and an air direction deflector plate provided at the air outlet vent, configured to rotate around a rotational shaft at an end of the air direction deflector plate to control a direction of the air, wherein the air outlet vent includes an inner air path and an outer air path, wherein the inner air path is made up of a flat surface portion on an upstream side and a curved surface portion on a downstream side, and wherein a plurality of projections are provided at an end portion of the curved surface portion.
  • the air flow colliding against the projection at the air outlet vent generates a longitudinal vortex and flows along the surface of the air direction deflector plate.
  • an air flow flowing in a substantially vertical direction from an upstream of the air outlet vent is allowed to let out while being guided from the inner air path in the air outlet vent towards the air direction deflector plate, and even though an opening area opened by the air direction deflector plate in the air outlet vent is small, that is, the air direction deflector plate opens at a small angle, the air is allowed to flow without separating from the front surface portion (the lower surface side) of the air direction deflector plate.
  • a surface of each of the plurality of projections includes a plurality of irregular portions that are smaller than the plurality of projections.
  • the longitudinal vortex generated at the projection is ensured to arrive at the air direction deflector plate while reducing the resistance generated by the projection to thereby generate an air flow that flows towards the front surface portion (the lower surface side) of the air direction deflector plate.
  • the air flow is allowed to flow along the air direction deflector plate, whereby the generation of condensation can be prevented which would otherwise be caused by the air flow flowing separate from the front surface portion (the lower surface side) of the air direction deflector plate during a cooling operation.
  • each of the plurality of projections has a substantially oval shape in which a major axis constitutes a flowing direction when the projection is seen from a normal direction thereof.
  • the longitudinal vortex generated at the projection is ensured to be conveyed to the front surface portion (the lower surface side) of the air direction deflector plate.
  • the air direction deflector plate opens at a small angle during a cooling operation particularly with air flowing weakly at a low air velocity, the air is still allowed to flow along the air direction deflector plate, whereby the generation of condensation can be prevented which would otherwise be caused by the air flow flowing separate from the front surface portion (the lower surface side) of the air direction deflector plate during a cooling operation.
  • Fig. 1 shows a perspective view of a ceiling embedded air conditioner according to a first embodiment of the present invention.
  • Fig. 2 shows a cross-sectional view of the ceiling embedded air conditioner according to the first embodiment of the present invention, taken along a line A-A' in Fig. 1 .
  • Fig. 3 shows a partially sectional perspective view and a partially enlarged view of an air outlet vent, which is in use, of the ceiling embedded air conditioner according to the first embodiment of the present invention.
  • Fig. 4 shows a partially sectional perspective view and a partially enlarged view near the air outlet vent in a decoration panel of the ceiling embedded air conditioner according to the first embodiment of the present invention in the cross section, taken along the line A-A' in Fig. 1 .
  • a ceiling embedded air conditioner 1 includes a casing 2 and a decoration panel 6 provided at a bottom surface of the casing 2 and including a plurality of air outlet vents 3, an air inlet vent 4, and air direction deflector plates 5.
  • a centrifugal air blower 7 installed in an interior of the ceiling embedded air conditioner 1 are a centrifugal air blower 7, a motor 8 for driving the centrifugal air blower 7, the air inlet vent 4 made up of a grille 4a and a filter 4b, an orifice 9 configured to induct air flows W flowing in from the air inlet vent 4 into the centrifugal air blower 7, a heat exchanger 10 installed in such a manner as to surround the centrifugal air blower 7, a drain pan 11 supporting the heat exchanger 10 and forming parts of internal air paths 3a in the air outlet vents 3 on a side of the casing 2, and an internal insulation material 12 installed on an inner surface of the casing 2 and forming parts of the internal air paths 3a in the air outlet vents 3.
  • the ceiling embedded air conditioner 1 is installed in a recessed portion on a ceiling 50 in such a manner as to be suspended from the ceiling 50 with suspension bolts 51.
  • the air outlet vent 3 includes an inner air path 13, an outer air path 14, the air direction deflector plate 5, and a motor 16 for rotating the air direction deflector plate 5, and the inner air path 13 is made up of a flat surface portion 13a on an upstream side and a curved surface portion 13b on a downstream side.
  • a plurality of projections 15 are provided at an end portion of the curved surface portion 13b, and each projection 15 has a substantially oval shape in which a major axis constitutes a flowing direction of the air flow W and includes irregular portions 15a provided on a surface thereof, the irregular portions 15a being smaller than the projection 15.
  • the air direction deflector plate 5 is made up of a front surface portion 5a, a rear surface portion 5b, and a rotational shaft portion 5c to which the motor 16 is connected.
  • the air flow W let out from the centrifugal air blower 7 is heated by the heat exchanger 10 for a heating operation and is cooled by the heat exchanger 10 for a cooling operation, whereafter the air flow W passes through the internal air path 3a to be let out into the inside of the room from the air outlet vent 3 that is opened as a result of the rotation of the air direction deflector plate 5.
  • the air direction deflector plate 5 changes not only an opening area in the air outlet vent 3 but also an air blowing direction as a result of the motor 16 being rotated in a rotational direction C.
  • the air direction deflector plate 5 opens at a small angle during a cooling operation, the air flow is allowed to flow along the air direction deflector plate 5, whereby the generation of condensation can be prevented which would otherwise be caused by separation of the air flow from the front surface portion 5a of the air direction deflector plate 5 during a cooling operation.
  • the projection 15 in this embodiment is given a substantially oval shape in which a major axis constitutes a flowing direction, and for the width L of the air outlet vent 3 shown in Fig. 1 , a size of the projection 15 becomes such that a major axis L1 is 0.005L to 0.02L, a minor axis L2 is 0.001L to 0.01L, a height h is 0.001L to 0.01L, and an interval P at which the projections 15 are provided in a width direction of the air outlet vent 3 is 0.025L to 0.075L for the width L of the air outlet vent 3, whereby the flowing direction of the air flow is changed so that the air flow is allowed to flow along the front surface portion 5a of the air direction deflector plate 5 by increasing the air flow flowing near the curved surface portion 13b by generating a longitudinal vortex by the projection 15 without increasing excessively the resistance of the air flow by the projection 15.
  • the longitudinal vortex generated at the projection 15 is ensured to arrive at the air direction deflector plate 5 while reducing the resistance by the projection 15, whereby an air flow is generated which flows towards the front surface portion (the lower surface side) 5a of the air direction deflector plate 5.
  • the projection 15 is given the substantially oval shape in which the major axis constitutes the flowing direction, whereby compared with a circular shape, a smaller scaled vortex is generated when the air flow collides against the projection 15, and the air flow is guided by the major axis.
  • the longitudinal vortex generated at the projection 15 is ensured to be conveyed to the front surface portion (the lower surface side) 5a of the air direction deflector plate 5.
  • the air direction deflector plate opens at a small angle during a cooling operation particularly with air flowing weakly at a low air velocity, the air is still allowed to flow along the air direction deflector plate, whereby the generation of condensation can be prevented which would otherwise be caused by the air flow flowing separate from the front surface portion (the lower surface side) of the air direction deflector plate during a cooling operation.
  • the intervals P at which the projections 15 are provided are made to be irregular intervals, whereby longitudinal vortexes generated by the projections 15 are made uneven, and a peak in a specific frequency band of noise generated at the air outlet vent 3 is suppressed, thereby making it possible to reduce the noise.
  • the number of projections 15 is not particularly limited, provided that the intervals P are maintained, and longitudinal vortexes are generated at the projections 15 by an amount of air let out from the air outlet vent 3 to increase an air flow flowing in the vicinity of the curved surface portion 13b without increasing excessively a pressure loss of an air flow at each of the projections 15, and the number of air flows whose flowing directions are changed so as to flow along the front surface portion 5a of the air direction deflector plate 5 is changed.
  • Fig. 5 shows a partially sectional perspective view and a partially enlarged view of an air outlet vent, which is in use, of a ceiling embedded air conditioner according to a second embodiment of the present invention.
  • Like reference signs will be given to like or corresponding portions to those of the first embodiment, so that part of a description of the second embodiment is omitted.
  • a plurality of projections 15 are provided at intervals P at an end portion of a curved surface portion 13b over a distance of 0.3L or smaller from opposite sides of an air outlet vent 3.
  • the flowing direction of the air flow flowing separate from the front surface portion 5a of the air direction deflector plate 5 by then is changed in such a way that the air flow flows along the front surface portion 5a of the air direction deflector plate 5 by increasing an air flow flowing in the vicinity of the curved surface portion 13b by generating longitudinal vortexes at the projections 15 provided on the curved surface portion 13b to lie near both the ends of the air outlet vent 3.
  • the air flow is allowed to flow along the front surface portion (the lower surface side) 5a of the air direction deflector plate 5, whereby the generation of condensation can be prevented which would otherwise be caused by the air flow flowing separate from the front surface portion (the lower surface side) 5a of the air direction deflector plate 5 as in a cooling operation.
  • the projection 15 in this embodiment is given a substantially oval shape in which a major axis constitutes a flowing direction, and for the width L of the air outlet vent 3 shown in Fig. 1 , a size of the projection 15 becomes such that a major axis L1 is 0.005L to 0.02L, a minor axis L2 is 0.001L to 0.01L, a height h is 0.001L to 0.01L, and an interval P at which the projections 15 are provided in a width direction of the air outlet vent 3 is 0.025L to 0.075L for the width L of the air outlet vent 3, whereby the flowing direction of the air flow is changed so that the air flow is allowed to flow along the front surface portion 5a of the air direction deflector plate 5 by increasing the air flow flowing in the vicinity of the curved surface portion 13b by generating a longitudinal vortex by the projection 15 without increasing excessively the resistance of the air flow by the projection 15.
  • the longitudinal vortex generated at the projection 15 is ensured to arrive at the air direction deflector plate 5 while reducing the resistance by the projection 15, whereby an air flow is generated which flows towards the front surface portion (the lower surface side) 5a of the air direction deflector plate 5.
  • the air flow is allowed to flow along the air direction deflector plate 5, whereby the generation of condensation can be prevented which would otherwise be caused by the air flow flowing separate from the front surface portion (the lower surface side) 5a of the air direction deflector plate 5 during a cooling operation.
  • the projection 15 is given the substantially oval shape in which the major axis constitutes the flowing direction, compared with a circular shape, a smaller scaled vortex is generated when the air flow collides against the projection 15, and the air flow is guided by the major axis of the projection.
  • the longitudinal vortex generated at the projection 15 is ensured to be conveyed to the front surface portion (the lower surface side) 5a of the air direction deflector plate 5.
  • the air flow is allowed to flow along the air direction deflector plate, whereby the generation of condensation can be prevented which would otherwise be caused by the air flow flowing separate from the front surface portion (the lower surface side) of the air direction deflector plate as in a cooling operation.
  • the intervals P at which the projections 15 are provided are made to be irregular intervals, whereby longitudinal vortexes generated by the projections 15 are made uneven, and a peak in a specific frequency band of noise generated at the air outlet vent 3 is suppressed, thereby making it possible to reduce the noise.
  • the number of projections 15 is not particularly limited, provided that the intervals P are maintained, and longitudinal vortexes are generated at the projections 15 by an amount of air let out from the air outlet vent 3 to increase an air flow flowing in the vicinity of the curved surface portion 13b without increasing excessively a pressure loss of an air flow at each of the projections 15, and the number of air flows whose flowing directions are changed so as to flow along the front surface portion 5a of the air direction deflector plate 5 is changed.
  • the ceiling embedded air conditioner prevents the generation of condensation on a lower surface of the air direction deflector plate which would otherwise be caused by the air flow from the upstream of the internal air path flowing separate from a front edge portion of the air direction deflector plate and can be applied to an air conditioner, an air cleaner, a dryer, an air conditioner for a motor vehicle, and the like.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Duct Arrangements (AREA)
EP20157694.9A 2019-03-27 2020-02-17 In eine raumdecke eingebettete klimaanlage Pending EP3715730A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019060092A JP7232986B2 (ja) 2019-03-27 2019-03-27 天井埋め込み形空気調和機

Publications (1)

Publication Number Publication Date
EP3715730A1 true EP3715730A1 (de) 2020-09-30

Family

ID=69631467

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20157694.9A Pending EP3715730A1 (de) 2019-03-27 2020-02-17 In eine raumdecke eingebettete klimaanlage

Country Status (3)

Country Link
EP (1) EP3715730A1 (de)
JP (1) JP7232986B2 (de)
CN (1) CN111750436B (de)

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CN114791126A (zh) * 2022-04-28 2022-07-26 广东美的白色家电技术创新中心有限公司 一种天花机

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CN113108370A (zh) * 2021-05-18 2021-07-13 宁波康韩瑞电器有限公司 一种导风组件及空调器
CN113324285A (zh) * 2021-07-05 2021-08-31 珠海格力节能环保制冷技术研究中心有限公司 空调室内机、空调器、空调控制方法、装置及空调

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114791126A (zh) * 2022-04-28 2022-07-26 广东美的白色家电技术创新中心有限公司 一种天花机
CN114791126B (zh) * 2022-04-28 2023-09-08 广东美的白色家电技术创新中心有限公司 一种天花机

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