EP2023048B1 - Climatiseur disposant d'un mécanisme de refroidissement du boîtier - Google Patents

Climatiseur disposant d'un mécanisme de refroidissement du boîtier Download PDF

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Publication number
EP2023048B1
EP2023048B1 EP08013278.0A EP08013278A EP2023048B1 EP 2023048 B1 EP2023048 B1 EP 2023048B1 EP 08013278 A EP08013278 A EP 08013278A EP 2023048 B1 EP2023048 B1 EP 2023048B1
Authority
EP
European Patent Office
Prior art keywords
air
projecting portion
electrical equipment
equipment box
air 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.)
Active
Application number
EP08013278.0A
Other languages
German (de)
English (en)
Other versions
EP2023048A1 (fr
Inventor
Seiichi Koga
Nobuhiro Ogura
Kazuhiro Hyugano
Akira Okada
Akihiro Nonaka
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 EP2023048A1 publication Critical patent/EP2023048A1/fr
Application granted granted Critical
Publication of EP2023048B1 publication Critical patent/EP2023048B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • 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
    • 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
    • F24F2013/207—Casings or covers with control knobs; Mounting controlling members or control units therein

Definitions

  • the present invention relates to an air conditioner having an electrical equipment box on the outside surface of an unit body set up in a ceiling space of a building or the like.
  • an air conditioner in which an electrical equipment box is provided on the outer surface of a unit body which is set up in a ceiling space of a building and contains a heat exchanger and an air blowing fan therein (for example, see Japanese Patent No. 2,562,675 ).
  • the unit body is set up in the ceiling space, and thus air heat-exchanged by the heat exchanger in the unit body can be led to a proper position in a room through an air blow-out duct and blown out into the room, so that air-conditioning operation can be implemented without spoiling the beautify of the room.
  • a control board for controlling the operation of an electrical expansion valve connected to the air blowing fan and the heat exchanger is mounted in the electrical equipment box. This control board generates heat in connection with the driving operation of the air blowing fan and the electrical expansion valve, and thus the temperature in the electrical equipment box increases. Therefore, it is necessary to cool the electrical equipment box.
  • the electrical equipment box is disposed in the ceiling space together with the unit body, and thus even when the electrical equipment box is provided with an opening intercommunicating with the ceiling space, it is impossible to sufficiently cool the electrical equipment box.
  • the air in the ceiling space generally contains lots of dust, and thus a filter for removing dust is required to be provided at the opening of the electrical equipment box, so that the construction of the electrical equipment box is cumbersome.
  • an object of the present invention has been implemented in view of the foregoing situation, and has an object to provide an air conditioner in which an electrical equipment box mounted on the outer surface of an unit body set up in a ceiling space of a building can be simply cooled.
  • the electrical equipment box has an accommodating portion in which a control board is mounted, and a projecting portion that is connected to the accommodating portion so that the inside of the projecting portion intercommunicates with the inside of the accommodating portion and has an air inlet port and an air discharge port, and the unit body has an opening formed in the outer surface thereof through which the projecting portion of the electrical equipment box is inserted, the projecting portion being secured to the outer side surface of the unit body under the state that the projecting portion projects through the opening into an air flowing passage of the air blowing fan.
  • the projecting portion may be provided in proximity to an air suction port of the air blowing fan.
  • the air discharge port may be formed in a surface of the projecting portion that faces the air suction port of the air blowing fan.
  • the air inlet port may be provided to a side surface of the projecting portion.
  • Figs. 1 and 2 sow a built-in type air conditioner (hereinafter referred to as "air conditioner”) according to an embodiment of the present invention.
  • air conditioner built-in type air conditioner
  • the air conditioner 1 has a box-shaped unit body 5 formed of a steel sheet which is suspended through bolts in a ceiling space 3 of a building.
  • the unit body 5 has four side plates 11 which are disposed in a rectangular frame shape so as to face one another, a top plate 13 is fixed to the upper edge portions of the respective side plates 11 and a bottom plate 15 is fixed to the lower edge portions of the respective side plates 11.
  • a heat insulating material is attached to parts of the side plates 11, the top plate 13 and the bottom plate 15.
  • Suspending fittings 17 are fixed to both the ends of each of the side plates 11A, 11B at the short side, and the suspending fittings 17 are fixed to suspending bolts (not shown) hung from the ceiling of the building, whereby the unit body 5 is suspended from the ceiling.
  • the inside of the unit body 5 is divided into a machine chamber 9 at the left side of Fig. 1 and a heat exchange chamber 10 at the right side of Fig. 1 by a partition plate 7.
  • a heat exchange chamber 10 at the right side are disposed in the heat exchange chamber 10 at the right side.
  • a drain pan 23 which is located below the indoor heat exchanger 21 to receive drain water dropped form the indoor heat exchanger 21, and a drain pump 25 for discharging the drain water stocked in the drain pan 23 to the outside.
  • a drain pump 25 for discharging the drain water stocked in the drain pan 23 to the outside.
  • an air blowing fan driving motor 27 in the machine chamber 9 at the left side are disposed an air blowing fan driving motor 27, and air blowing fans 29A, 29B (for example, a sirocco fan having cascades of about 50) which are coupled to each other in series through the air blowing fan driving motor 27 in the longitudinal direction of the unit body 5.
  • air blowing fans 29A, 29B for example, a sirocco fan having cascades of about 50
  • the lower side of the drain pan 23 is covered by the bottom plate 15 described above, the lower portions of the air blowing fans 29A, 29B are opened, and a suction grille (not shown) is detachably secured to the lower portions of the air blowing fans 29A, 29B.
  • the opened portions of the air blowing fans 29A, 29B serve as an air suction port 30.
  • An air blow-out port 40 of the unit body 5 is formed in the side plate 11C.
  • a refrigerant (liquid) pipe connection port 31, a refrigerant (gas) pipe connection port 32 and a drain pipe connection port 33 extend from the side plate 11B at the right side of Fig. 2 of the unit body 5.
  • the refrigerant (liquid) pipe connection port 31 and the refrigerant (gas) pipe connection port 32 are connected to the indoor heat exchanger 21 at one ends thereof, and also connected to an outdoor unit (not shown) at the other ends thereof.
  • the drain pipe connection port 33 is connected to the drain pump 25 at one end thereof, and also connected to a drain hose (not shown) at the other end thereof. The drain hose is led out to the outside.
  • an electrical equipment box 41 is mounted on the outer surface of the machine room 9 side of the side plate 11B at the short side.
  • the electrical equipment box 41 has a box-shaped accommodating portion 45, and a box-shaped projecting portion 48 which intercommunicates with or connects to the accommodating portion 45.
  • a control board 42 for controlling the operation of the air blowing fans 29A, 29B, the operation of an electrical expansion valve (not shown) connected to the indoor heat exchanger 21, etc., electrical equipment parts 43, a heat sink 44, etc.
  • the control board 42 is disposed so as to face an intercommunication opening 49 through which the accommodating portion 45 and the projecting portion 48 intercommunicate with each other, and has a plate surface whose size is larger than the opening 49.
  • the control board 42 is fixed to the wall surface 45A of the accommodating portion 45 by plural fixing members 50 so as to be spaced from the wall surface 45A at a predetermined interval K.
  • a circular hole 54 through which wires connected to the control board 42 and the electrical parts 43 are passed is provided at the lower side of the projecting portion 48.
  • the box-shaped projecting portion 48 connects to the accommodating portion 45 to be near to the heat sink 44 side, and the insides of the projecting portion 48 and the inside of the heat sink 44 intercommunicate with each other through the opening 49. In addition, it has an air inlet port (slit) 46 and an air discharge port (slit) 47.
  • the projecting portion 48 is homothetic to the accommodating portion 45. The homothetic ratio of the projecting portion 48 is equal to about one third in size of the accommodating portion 45, the volume thereof is remarkably smaller than the accommodating portion 45, the inside thereof is hollow and the hollow portion serves as an air flowing passage.
  • the electrical equipment box 41 has a fixing bracket 51, and it is fixed to the outer surface of the unit body 5 through the bracket 51 under the state that the projecting portion 48 is inserted in an opening 52 formed in the side plate 11B of the unit body 5.
  • the projecting portion 48 inserted in the opening 52 of the side plate 11B projects into the air flowing passage 55 based on one air blowing fan 29B, and under this state, the projecting portion 48 is disposed so that the air inlet port (slit) 46 is oriented in the downward direction in Fig. 2 and the air discharge port (slit) 47 is oriented in the air suction axis direction of the air blowing fan 29B.
  • the air inlet port 46 is provided to the side plate 48A of the projecting portion 48.
  • the discharge port 47 is provided at a position distant from the air inlet port 46 on the side plate 48B which is adjacent to the side plate 48A and faces the air suction port 60 of the air blowing fan 29B.
  • air introduced from the air inlet port 46 cools the back surface of the control board 42, blown out from the discharge port 47 formed in the side plate 48B distant from the air inlet port 46 in the air suction axis direction of the air blowing fan 29B, and then sucked into the air blowing fan 29B.
  • the projecting portion 48 projecting from the accommodating portion 45 is located in the air suction passage of the air blowing fan 29B, and thus a part of the sucked air is introduced from the air inlet port 46 of the projecting portion 48 into the projecting portion 48, and the air introduced into the projecting portion 48 induces turbulent flow while passing through the slit 46.
  • the back surface of the control board 42 is exposed in the accommodating portion 45, and thus it is heat-exchanged by forced convection when the air passes over the back surface of the control board, so that the temperature of the air is increased.
  • the temperature-increased air is fed from the slit 47 of the side plate 48B of the projecting portion 48 to the outside of the projecting portion 48, and then led to the outer peripheral portion of the air suction port 60 of the air blowing fan 29B by air suction pressure.
  • the air introduced from the air inlet port 46 is blown out from the discharge port 47 which is far away from the air inlet port 46, and thus the air is broadly circulated in the projecting portion 48 and effectively cools the back surface of the control board 42.
  • the surface of the board is exposed to forced convection at all times by indoor air whose temperature is lower than air in the space under the roof in which the unit body 5 is set, so that the electrical equipment box 41 can be more simply cooled as compared with the conventional air conditioner.
  • the amount of air passing through the inside of the electrical equipment box 41 is increased, and the increase of the temperature of the electrical equipment box 41 can be suppressed.
  • experiment data indicated the maximum temperature difference of about 40° in some sites.
  • the present invention is not limited to the electrical equipment box cooling mechanism used in the above embodiment, and various modifications may be made without departing from the subject matter of the present invention.
  • the main body of the projecting portion is designed in rectangular parallelepiped, however, the present invention is not limited to this shape.
  • vertically cut-out slits are used as the opening portion, however, the main body of the projecting portion may be formed in a cylindrical shape and the slits may be designed in a mesh structure.
  • the numbers of slits formed in the air inlet port and the air outlet port are not limited to those numbers illustrated in the figures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Claims (4)

  1. Climatiseur ayant un boîtier d'équipement électrique (41) monté sur la surface externe (11B) d'un corps d'unité dans lequel un ventilateur de refoulement d'air (29) et un échangeur de chaleur intérieur (21) sont montés, dans lequel le boîtier d'équipement électrique a une partie de logement (45) dans laquelle un panneau de commande est monté, le climatiseur étant caractérisé en ce que le boîtier d'équipement électrique (41) a une partie en saillie (48) qui est raccordée à la partie de logement (45) de sorte que l'intérieur de la partie en saillie communique avec l'intérieur de la partie de logement et a un orifice d'entrée d'air (46) et un orifice de décharge d'air (47), et le corps d'unité a une ouverture (52) formée dans sa surface externe (11B) à travers laquelle la partie en saillie (48) du boîtier d'équipement électrique (41) est insérée, la partie en saillie (48) étant fixée sur la surface latérale externe du corps d'unité dans l'état dans lequel la partie en saillie fait saillie à travers l'ouverture dans un passage d'écoulement d'air du ventilateur de refoulement d'air (29).
  2. Climatiseur selon la revendication 1, dans lequel la partie en saillie est prévue à proximité d'un orifice d'aspiration d'air du ventilateur de refoulement d'air.
  3. Climatiseur selon la revendication 2, dans lequel l'orifice de décharge d'air est formé dans une surface de la partie en saillie qui fait face à l'orifice d'aspiration d'air du ventilateur de refoulement d'air.
  4. Climatiseur selon la revendication 3, dans lequel l'orifice d'entrée d'air est prévu sur une surface latérale de la partie en saillie.
EP08013278.0A 2007-07-25 2008-07-23 Climatiseur disposant d'un mécanisme de refroidissement du boîtier Active EP2023048B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007192790A JP2009030829A (ja) 2007-07-25 2007-07-25 空気調和装置

Publications (2)

Publication Number Publication Date
EP2023048A1 EP2023048A1 (fr) 2009-02-11
EP2023048B1 true EP2023048B1 (fr) 2015-03-04

Family

ID=39924928

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08013278.0A Active EP2023048B1 (fr) 2007-07-25 2008-07-23 Climatiseur disposant d'un mécanisme de refroidissement du boîtier

Country Status (5)

Country Link
US (1) US20090025413A1 (fr)
EP (1) EP2023048B1 (fr)
JP (1) JP2009030829A (fr)
KR (1) KR100898233B1 (fr)
CN (1) CN100578100C (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
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JP4839399B2 (ja) * 2009-09-07 2011-12-21 株式会社長府製作所 空気温調機
JP4852639B2 (ja) * 2009-10-14 2012-01-11 株式会社長府製作所 空気温調機
JP5587060B2 (ja) * 2010-06-30 2014-09-10 三洋電機株式会社 ビルトイン型空気調和装置
JP5549817B2 (ja) * 2010-12-28 2014-07-16 株式会社富士通ゼネラル ダクト型空気調和機の室内機
CN104136860B (zh) * 2012-02-28 2017-06-23 东芝开利株式会社 电气设备以及空调机
JP5447569B2 (ja) 2012-03-26 2014-03-19 ダイキン工業株式会社 空気調和装置の熱交換器及び空気調和装置
JP5464225B2 (ja) * 2012-03-26 2014-04-09 ダイキン工業株式会社 空気調和装置の室内機
JP5781220B2 (ja) * 2012-03-29 2015-09-16 三菱電機株式会社 室内機及びそれを備えた空気調和装置
JP6185346B2 (ja) * 2013-09-18 2017-08-23 ヤンマー株式会社 エンジン駆動ヒートポンプ
KR102168584B1 (ko) * 2013-11-12 2020-10-22 삼성전자주식회사 천장형 에어컨 실내기
EP3091304B1 (fr) * 2013-12-20 2020-09-23 Toshiba Carrier Corporation Climatiseur
USD785151S1 (en) * 2014-08-13 2017-04-25 Atm Beyaz Esya Parcalari Sanayi Ve Ticaret Limited Sirketi Condenser
JP6833802B2 (ja) * 2016-02-17 2021-02-24 東芝キヤリア株式会社 空調用室内ユニットおよび空気調和装置
WO2017195335A1 (fr) * 2016-05-12 2017-11-16 三菱電機株式会社 Unité extérieure de climatiseur
KR20190017506A (ko) * 2017-08-11 2019-02-20 엘지전자 주식회사 공기조화장치
KR102091255B1 (ko) * 2017-09-14 2020-03-19 엘지전자 주식회사 일체형 공기조화기
JP6940453B2 (ja) * 2018-05-10 2021-09-29 株式会社ヴァレオジャパン フィルタ付き送風装置
AU2019323857A1 (en) * 2018-08-24 2021-03-11 Fujitsu General Limited Ceiling embedded air conditioner

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KR100323516B1 (ko) 1999-06-05 2002-02-07 구자홍 표시창과 콘트롤 박스가 일체로 구비된 공기 조화기
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KR100675803B1 (ko) 2005-04-20 2007-02-02 삼성전자주식회사 공기조화기의 실외기

Also Published As

Publication number Publication date
EP2023048A1 (fr) 2009-02-11
US20090025413A1 (en) 2009-01-29
JP2009030829A (ja) 2009-02-12
KR100898233B1 (ko) 2009-05-18
CN101354160A (zh) 2009-01-28
KR20090012035A (ko) 2009-02-02
CN100578100C (zh) 2010-01-06

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