EP0791788B1 - In Raumdecke eingebaute Klimaanlage - Google Patents

In Raumdecke eingebaute Klimaanlage Download PDF

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Publication number
EP0791788B1
EP0791788B1 EP97102807A EP97102807A EP0791788B1 EP 0791788 B1 EP0791788 B1 EP 0791788B1 EP 97102807 A EP97102807 A EP 97102807A EP 97102807 A EP97102807 A EP 97102807A EP 0791788 B1 EP0791788 B1 EP 0791788B1
Authority
EP
European Patent Office
Prior art keywords
air
fan
suck
plate
conditioner
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.)
Expired - Lifetime
Application number
EP97102807A
Other languages
English (en)
French (fr)
Other versions
EP0791788A3 (de
EP0791788A2 (de
Inventor
Kazuaki Sakaino
Kazunobu Okawa
Yukito Nawata
Syouichi Suda
Kazuo Abe
Kazuhiro Hiugano
Masazumi Makino
Hisashi Kogure
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Publication of EP0791788A2 publication Critical patent/EP0791788A2/de
Publication of EP0791788A3 publication Critical patent/EP0791788A3/de
Application granted granted Critical
Publication of EP0791788B1 publication Critical patent/EP0791788B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24Means for preventing or suppressing noise
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0059Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0035Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0043Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0071Indoor units, e.g. fan coil units with means for purifying supplied air
    • F24F1/0073Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0018Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0022Centrifugal or radial fans
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/0001Control or safety arrangements for ventilation
    • F24F2011/0002Control or safety arrangements for ventilation for admittance of outside air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering

Definitions

  • the present invention relates to a technique for suppressing noises which occur in an in-ceiling mount type air conditioner.
  • the above-mentioned air-conditioner is known from JP 06-159719 and JP 04-198634.
  • An object of the present invention is to provide an in-ceiling mount type air conditioner in which noises occurring when air is sucked can be suppressed as much as possible, and further noises occurring when air is blown from the air blow fan to a heat exchanger can be suppressed as much as possible.
  • the first air intercepting plate is interposed between the top face of the housing of the air conditioner and the air blow fan. Therefore, the air which is about to flow into the gap between the top face of the housing and the air blow fan is intercepted by the first intercepting plate, so that the "air bypassing" can be prevented and the noises can be suppressed to a smaller level, as compared with the prior art.
  • the second intercepting plate is provided on the outer periphery of the shroud of the air blow fan. Therefore, the air which is about to flow to this place can be intercepted by the second intercepting plate, so that the "air rolling" can be prevented and the noises can be suppressed to a smaller level, as compared with the prior art.
  • reference numeral 1 represents an air conditioner which is mounted on the ceiling 2 of a house, and it is generally called as "four-way cassette".
  • the air conditioner 1 includes a housing 4 which is suspended by suspending bolts in the ceiling 2, a decoration panel 5 which is exposed from the ceiling to the room, and a chamber (filter chamber) 6 disposed between the decoration panel 5 and the housing 4.
  • Reference numeral 7 represents an air blow fan (e.g., turbo fan) which is disposed substantially at the center of the housing, and reference numeral 8 represents a motor for driving the fan 7.
  • the motor 8 is fixed to the top face 4a of the housing 4 by a fixture 9.
  • Reference numeral 10 represents a heat exchanger which is disposed so as to surround the fan 7, and reference numeral 11 represents a drain pan which is disposed at the lower side of the heat exchanger 10.
  • An air passage 12 is formed at the center of the drain pan.
  • Reference numeral 13 represents an air suck-in plate which is fixed to the lower surface of the drain pan 11.
  • An inner peripheral side tongue (hereinafter referred to as "fan nozzle") 13a and an outer peripheral side tongue 13b which corresponds to a second intercepting plate of the present invention are formed in the air suck-in plate 13, and an orifice 14 is formed in the inner peripheral portion of the fan nozzle 13a.
  • the orifice 14 is disposed so as to confront the air suck-in port 40 of the fan 7.
  • the air passage 12 is sectioned into a primary space 15 and a secondary space 16 by the air suck-in plate 13, and the fan 7 is located in the air passage 12.
  • the suck-in port 17 is located at the lower side of the primary space 15.
  • Reference numeral 18 represents an air blow-out port
  • reference numeral 19 represents an adiabatic member which is attached to the inner wall of the housing 4.
  • An air suck-in grill 20 is provided at the center of the decoration panel 5, and an air blow-out port 21 is provided around the air suck-in grill 20.
  • Air blow-direction changing vanes are disposed at the air blow-out port 21, and reference numeral 23 represents a pre-filter which is disposed at the back side of the air suck-in grill 20.
  • the filter chamber 6 is disposed between the decoration panel 5 and the housing 4.
  • an air suck-in space (air passage) 25 where a high-performance filter 24 is provided, and four air discharge spaces 26 which are provided at the outside of the air suck-in space 25.
  • the air suck-in port 17 of the housing 4 and the air suck-in grille 20 intercommunicate with each other through the air discharge space 26.
  • the filter chamber 6 is provided with an outside air supply portion (opening) 51, and the outside air portion 51 intercommunicates with a joint duct 53.
  • the joint duct 53 intercommunicates with an outside air supply duct 27.
  • the center axes of the outside supply duct 27 and the outside supply portion 51 are spaced from each other by a distance of L1.
  • Reference numeral 28 represents a booster fan apparatus provided to the outside supply duct 27, and a filter 29 and a booster fan 30 are accommodated in the booster fan apparatus 28.
  • the outside is supplied into the housing by driving the booster fan 30.
  • the outside air supply portion 51 to which the outside air supply duct 27 is joined is disposed so as to penetrate through the side portion of the filter chamber 6 and confront the air suck-in space 25 of the filter chamber 6.
  • the outside air supply operation is performed by the booster fan apparatus 28.
  • the outside air which is supplied through the outside air supply duct 27 is introduced through the air suck-in space 25 into the filter chamber 6.
  • the outside air thus supplied joins with the indoor air which is passed through the high-performance filter 24 as described above, and sucked into the orifice 14 of the air suck-in plate 13.
  • the outside air supply duct 27 is joined to the filter chamber 6, and the outside air is supplied through the filter chamber 6. Therefore, the outside air which is supplied through the outside air supply duct 27 smoothly flows into the air suck-in port 17 of the housing 4, and thus reduction in the flow amount of the air flowing in the outside air supply duct 27 can be suppressed to a small level. Accordingly, the supply amount of the outside air can be increased. In such a case where it is unnecessary to dispose the high-performance filter 24 or supply the outside air, neither the filter chamber nor the joint duct 53 linked to the filter chamber are required. In this case, the air conditioner 1 is constructed by the housing 4 and the decoration panel.
  • the indoor air flows as indicated by a solid line of Fig. 1 to perform room cooling/heating operation. That is, the indoor air discharged from the turbo fan 7 is blown out from the outer peripheral portion of the fan 7 by centrifugal force of the fan 7, and then passed through the heat exchanger 10 to be heat-exchanged. Thereafter, the heat-exchanged air is passed through the air blow-out port 18 of the housing and the air blow-out port 21 of the decoration panel 5, and finally blown into the room.
  • a ring-shaped first intercepting plate 100 is interposed between the top face 4a of the housing 4 and the hub 7a of the turbo fan 7 as shown in Fig. 2 so that the air is prevented from leaking into the gap between the top face 4a of the housing 4 and the hub 7a of the turbo fan 7.
  • the first intercepting plate 100 is formed by punching an iron plate, and preferably an erecting portion 100a of the first intercepting plate 100 is disposed to be within the rotational locus of a blade 7b which is fixed to the hub 7a of the turbo fan 7.
  • reference numeral 7c represents a shroud of the turbo fan 7.
  • Fig. 3 is a graph showing noise measurement data (ordinate: Magnitude of Noise, abscissa: Frequency, average value: 48.3 dB) when the first intercepting plate 100 is provided
  • Fig. 4 is a graph showing noise measurement data (average value: 50.7dB) when the first intercepting plate 100 is not provided.
  • the ring-shaped first intercepting plate 100 is interposed in the gap between the top face 4a of the housing 4 and the hub 7a of the turbo fan 7 as shown in Fig. 2, whereby the "air bypassing" is prevented and thus the noise caused by the air discharge action of the turbo fan 7 can be suppressed.
  • the shape of the first intercepting plate 100 is not limited to the ring shape, and any shape may be used insofar as it has an effect of preventing the "air bypassing".
  • a ring-shaped outer peripheral side tongue (hereinafter referred to as "second intercepting plate") 13b extending in the direction of the shaft of the turbo fan 7 is provided on the outer periphery of the shroud 7c of the turbo fan 7 as shown in Fig. 1.
  • the second intercepting plate 13b is formed integrally with the air suck-in plate 13 (resin molding), and preferably it has a height which is substantially equal to the height of the fan nozzle 13a.
  • Fig. 5 is a graph showing noise measurement data (average value: 48.4 dB) when the first intercepting plate 13b is provided
  • Fig. 6 is a graph showing noise measurement data (average value: 49.6 dB) when the second intercepting plate 13b is not provided.
  • the noise can be reduced to a value which is less by 1.2 dB than when the second intercepting plate 13b is not provided. In this case, 1.2dB corresponds to the noise magnitude due to the "air rolling".
  • the second intercepting plate 13b which extends in the direction of the shaft of the fan is provided on the outer periphery of the shroud 7c, so that the "air rolling" can be prevented and the noise due to the air suck-in operation of the turbo fan 7 can be reduced.
  • the present invention is not limited to the above embodiment.
  • the second intercepting plate 13b is formed integrally with the air suck-in plate 13.
  • the present invention is not limited to this mode, and the second intercepting plate 13b may be designed in any manner insofar as it prevents the "air rolling".
  • both the first and second intercepting plates 13b and 100 are provided over the upper and lower sides of the turbo fan 7, the effect of the present invention can be more enhanced.
  • the first intercepting plate is interposed between the top face of the housing and the hub of the turbo fan, so that the "air bypassing" can be prevented, and the noise due to the air discharging operation of the air blow fan (turbo fan) can be reduced by the amount corresponding to the "air bypassing".
  • the second intercepting plate is provided on the outer periphery of the shroud of the air blow fan, so that the "air rolling" can be prevented, and the noise due to the air suck-in operation of the air blow fan can be reduced by the amount corresponding to the "air rolling".

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)

Claims (5)

  1. In die Raumdecke eingebaute Klimaanlage mit einem Wärmetauscher (10), einem Luftgebläse (7), das Luft einsagen kann und diese durch den Wärmetauscher ausblasen kann, wobei der Wärmetauscher (10) das Gebläse (7) umgibt, das Luftgebläse an seinem oberen Teil eine Nabe (7a) und an seinem unteren Teil eine Abdeckscheibe (7c) hat und an der oberen Außenfläche (4a) eines Gehäuses (4) der Klimaanlage (1) befestigt ist, einem Motor (8) zum Antreiben des Luftgebläse (7), einer Befestigung (9), die zwischen dem Motor (8) und der oberen Außenfläche (4a) des Gehäuses (4) angeordnet ist und den Motor (8) an der oberen Außenfläche (4a) des Gehäuses (4) befestigt, und einer Lufteinsaugplatte (13), die eine Öffnung (14) hat, durch welche Luft in das Luftgebläse (7) eingesaugt wird, wobei die Lufteinsaugplatte (13) so angeordnet ist, dass sie die Unterseite des Luftgebläses (7) umgibt,
       dadurch gekennzeichnet, dass die Klimaanlage weiterhin aufweist sowohl eine erste obere Abfangplatte (100) zum Abfangen des Luftstroms, der von dem Luftgebläse (7) auf die Nabe (7a) ausgegeben wird, wobei die obere Abfangplatte (100) so angeordnet ist, dass sie die Befestigung (9) umgibt und sich von der oberen Außenfläche (4a) in einen Spalt zwischen der oberen Außenfläche (4a) und der Nabe (7a) nach unten erstreckt, als auch eine zweite untere Abfangplatte (13b), um den Luftstrom abzufangen, der von dem Luftgebläse (7) zu der Einsaugöffnung des Luftgebläses (7) ausgegeben wird, wobei die untere Abfangplatte (13b) so angeordnet ist, dass sie sich von der Lufteinsaugplatte nach oben zum Außenumfang der Abdeckscheibe (7c) erstreckt.
  2. Klimaanlage nach Anspruch 1, wobei die obere Abfangplatte (100) in Ringform gestaltet ist.
  3. Klimaanlage nach Anspruch 1, wobei die obere Abfangplatte (100) so angeordnet ist, dass sie innerhalb des Drehortes der Flügel (7b) des Luftgebläses (7) liegt.
  4. Klimaanlage nach Anspruch 1, wobei das Luftgebläse (7) mit einer Gebläsedüse (13a) versehen ist, die am Innenumfang der Abdeckscheibe (7c) des Luftgebläses angeordnet ist, und zum Leiten der Einsaugluft ausgebildet ist.
  5. Klimaanlage nach Anspruch 4, wobei die Abfangplatte (100) und die Gebläsedüse (13a) einstückig miteinander ausgebildet sind.
EP97102807A 1996-02-22 1997-02-20 In Raumdecke eingebaute Klimaanlage Expired - Lifetime EP0791788B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP60100/96 1996-02-22
JP6010096 1996-02-22
JP8060100A JPH09229409A (ja) 1996-02-22 1996-02-22 送風装置及び送風装置を用いた天井埋込型空気調和機

Publications (3)

Publication Number Publication Date
EP0791788A2 EP0791788A2 (de) 1997-08-27
EP0791788A3 EP0791788A3 (de) 1999-05-12
EP0791788B1 true EP0791788B1 (de) 2004-11-03

Family

ID=13132348

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97102807A Expired - Lifetime EP0791788B1 (de) 1996-02-22 1997-02-20 In Raumdecke eingebaute Klimaanlage

Country Status (5)

Country Link
EP (1) EP0791788B1 (de)
JP (1) JPH09229409A (de)
CN (1) CN1144977C (de)
DE (1) DE69731417T2 (de)
ES (1) ES2231830T3 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11211129A (ja) * 1998-01-30 1999-08-06 Mitsubishi Electric Corp 天井埋込み型空気調和機
FR2775335B1 (fr) * 1998-02-23 2000-03-31 Electricite De France Pompe a chaleur comprenant un ventilateur centrifuge a reaction
JP3907983B2 (ja) 2000-09-05 2007-04-18 エルジー エレクトロニクス インコーポレイティド 空気調和機用ターボファン
JP4757725B2 (ja) * 2005-07-07 2011-08-24 三菱電機株式会社 空気調和機
JP4757730B2 (ja) * 2005-10-12 2011-08-24 三菱電機株式会社 空気調和機
KR20070064907A (ko) * 2005-12-19 2007-06-22 삼성전자주식회사 공기조화기
KR100826020B1 (ko) 2006-08-28 2008-04-28 엘지전자 주식회사 공기조화기
US20080230619A1 (en) * 2007-03-21 2008-09-25 Robert Kirby Heating or heating and air conditioning unit with noise abatement feature and method of use
CN101592390B (zh) * 2008-05-26 2013-07-31 乐金电子(天津)电器有限公司 天花板式空调室内机通风通路结构
CN102734871B (zh) * 2012-07-03 2017-12-26 海尔集团公司 暗藏式空调室内机
CN103334960B (zh) * 2013-07-04 2016-04-20 佛山市南海九洲普惠风机有限公司 一种吸顶式换气扇
CN105546661B (zh) 2016-02-19 2018-11-06 珠海格力电器股份有限公司 空调器
CN111442369A (zh) * 2019-01-17 2020-07-24 青岛海尔空调器有限总公司 吊顶式空调室内机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61280327A (ja) * 1985-05-10 1986-12-10 Sanyo Electric Co Ltd 熱交換ユニツト
JP2823351B2 (ja) * 1990-11-28 1998-11-11 三洋電機株式会社 熱交換ユニット
JPH06159719A (ja) * 1992-11-30 1994-06-07 Sanyo Electric Co Ltd 空気調和機

Also Published As

Publication number Publication date
EP0791788A3 (de) 1999-05-12
DE69731417D1 (de) 2004-12-09
JPH09229409A (ja) 1997-09-05
EP0791788A2 (de) 1997-08-27
CN1178309A (zh) 1998-04-08
CN1144977C (zh) 2004-04-07
ES2231830T3 (es) 2005-05-16
DE69731417T2 (de) 2005-10-20

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