EP0962716B1 - Air conditioner - Google Patents

Air conditioner Download PDF

Info

Publication number
EP0962716B1
EP0962716B1 EP98945578A EP98945578A EP0962716B1 EP 0962716 B1 EP0962716 B1 EP 0962716B1 EP 98945578 A EP98945578 A EP 98945578A EP 98945578 A EP98945578 A EP 98945578A EP 0962716 B1 EP0962716 B1 EP 0962716B1
Authority
EP
European Patent Office
Prior art keywords
blow
outlet
wind
air conditioner
wind direction
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
EP98945578A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0962716A1 (en
EP0962716A4 (en
Inventor
Tsunehisa; Kanaoka-Kojo Sakai-seisakusho SANAGI
Taku; Kanaoka-Kojo Sakai-seisakusho of HIRAKAWA
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries 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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of EP0962716A1 publication Critical patent/EP0962716A1/en
Publication of EP0962716A4 publication Critical patent/EP0962716A4/en
Application granted granted Critical
Publication of EP0962716B1 publication Critical patent/EP0962716B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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

Definitions

  • the present invention relates to an air conditioner capable of preventing dew from being formed.
  • a conventional air conditioner is disclosed in JP-A-8 285 303.
  • FIG. 4A there has been an indoor unit as shown in Fig. 4A.
  • air is sucked from a suction inlet 105 by a turbo fan 103 which is driven by a motor 102.
  • the air is heat-exchanged by a heat exchanger 106, and then blown out from a blow-off outlet 108 via a blow-off path 107.
  • Reference numeral 109 denotes a wind direction blade.
  • Fig. 4B is a bottom view of the indoor unit 101.
  • Fig. 4A is a sectional view of the indoor unit 101 taken along a line Z-Z of Fig. 4B.
  • Blow-off outlets 108, 110, and 111 having a shape of a long and narrow rectangle and surrounding the suction inlet 105 are formed on a panel 112.
  • a casing 115 has closing parts 113A and 113B which close end regions of the blow-off outlet 110 having a predetermined length ranging from one end of the blow-off outlet 110 toward the center thereof.
  • the casing 115 has a closing part 116 closing an end region of the blow-off outlet 108 having a predetermined length ranging from an end of the blow-off outlet 108 toward the center thereof.
  • the casing 115 has a closing part 117 closing an end region of the blow-off outlet 111 having a predetermined length ranging from an end of the blow-off outlet 111 toward the center thereof.
  • the speed of wind blown out from the blow-off outlets 108, 110, and 111 is increased to lengthen the travel distance of the wind.
  • An object of the present invention is to provide an air conditioner which increases a blow-off speed without forming dew at a blow-off outlet.
  • the present invention is defined in claim 1.
  • a device includes a blow-off outlet blowing off wind coming from an indoor heat-exchanger; a closing member provided such that one end of the closing member is spaced by a predetermined length from an end of the blow-off outlet toward the center of the blow-off outlet for the closing member to partly close the blow-off outlet; and a wind direction blade provided downstream of the closing member.
  • the closing member is provided at the position spaced by the predetermined length from the end of the blow-off outlet. Therefore, when cold wind blown out from the indoor heat exchanger strikes the closing member during an air-cooling operation, the cold wind is capable of dividedly flowing to openings positioned at both sides of the closing member.
  • the air conditioner unlike the conventional construction having the closing part extending continuously from the end of the blow-off outlet, the end portion of the wind direction blade is covered with the cold wind. Thus, it is possible to prevent the cold wind and indoor air from contacting each other at the end portion of the wind direction blade. Accordingly, it is possible to prevent dew from being formed. Thus, according to the air conditioner, it is possible to increase the blow-off speed and the travel distance of the blow-off wind without forming dew on the end portion of the wind direction blade.
  • a dimension between both ends of the blow-off outlet is smaller than a dimension between both ends of an open section on which the wind direction blade is installed.
  • the dimension between both ends of the blow-off outlet is smaller than the dimension between both ends of the open section on which the wind direction blade is installed, it is possible to increase the blow-off speed and the travel distance of the blow-off wind without forming dew on the end portion of the wind direction blade, owing to the closing member spaced at a predetermined interval from the end of the blow-off outlet.
  • Another embodiment is an air conditioner wherein a fan and a heat exchanger are disposed in a casing; a blow-off path-forming member forming a blow-off path is provided; and a wind direction blade is provided on a blow-off outlet, comprising:
  • a part of the guide plate projects into the blow-off path; and holes for introducing wind to the axially end portion of the wind direction blade is formed on the guide plate.
  • a part of cold wind flowing inside the blow-off path is curved by the part of the guide plate projecting into the blow-off outlet to flow the cold wind along the surface of the guide plate.
  • the curved cold wind flows inside the space along the guide plate and then guided into the axially end portion of the wind direction blade through the holes formed on the guide plate. Accordingly, it is possible to reliably flow a slight amount of cold wind on the periphery of the axially end portion of the wind direction blade and prevent wind from being turbulent on the periphery of the axially end portion.
  • a front end portion of the guide plate projecting into the blow-off path is bent toward an upstream side of the blow-off path such that the front end portion of the guide plate is oblique with respect to a base portion of the guide plate.
  • the front end portion of the guide plate projects into the blow-off path and is bent toward the upstream side of the blow-off path such that the front end portion of the guide plate is oblique with respect to the base portion thereof.
  • the front end portion of the guide plate introduces a part of the cold wind flowing through the blow-off path smoothly and reliably into the space along the surface of the guide plate.
  • a decorative panel having the blow-off outlet is provided with a guide section for guiding wind to the axially end portion of the wind direction blade.
  • Another embodiment is an air conditioner, comprising a suction inlet and a blow-off outlet provided on a decorative panel; and a wind direction blade provided on the blow-off outlet, to suck air from the suction inlet and blow off the air from the blow-off outlet through the fan and the blow-off path.
  • At least part of the guide section is located outside a corner of the blow-off outlet, and a part of the guide section confronts a part of an inner side of the blow-off path.
  • cold wind which is to be blown out from the blow-off outlet strikes a part of the guide section confronting a part of the inner side of the blow-off path and is guided along the surface of the guide section. Because at least part of the guide section is located outside the corner of the blow-off outlet, the cold wind flowing along the surface of the guide section is blown out smoothly from the blow-off outlet to the outside. Because the cold wind flows smoothly on the periphery of the axially end portion of the wind direction blade, it is possible to prevent dew from being formed thereon.
  • the blow-off path-forming member is a part of a drain pan.
  • blow-off path-forming member is a part of the drain pan, it is possible to form the blow-off path easily. Further, when the space for the guide plate is provided, it is possible to form the space easily and at a low cost by cutting off a predetermined portion of the drain pan.
  • a value determined by dividing an interval (X) between the end of the blow-off outlet and the closing member by a width (Y) of the closing member is more than 0.2 and less than 1.0.
  • Fig. 1A is a sectional view of an indoor unit 1 of an embedded-in-ceiling type of an air conditioner, which is embedded in a ceiling, according to an embodiment of the present invention.
  • Fig. 1B is a bottom view showing the indoor unit 1.
  • Fig. 1A is a sectional view taken along a cut line A-A of Fig. 1B.
  • an indoor unit 1 has a decorative panel 2, a casing 3, a motor 5, a turbo fan 6, and an indoor heat exchanger 7, wherein the motor 5, turbo fan 6, and indoor heat exchanger 7 are positioned inside the casing main body 3.
  • the decorative panel 2 has a suction inlet 8 opening spaciously at the center thereof and blow-off outlets 10, 11, and 12 having a shape of a long and narrow rectangle and formed on the periphery of the suction inlet 8.
  • a grille 13 and a filter 14 are installed on the suction inlet 8. Wind direction blades 15, 16, and 17 are installed on the blow-off outlets 10, 11, and 12, respectively.
  • Closing members 20, 21 having a width Y are disposed so that one end of each closing members 20, 21 is spaced from each end of the blow-off outlet 11, 51 toward the center thereof by a predetermined length X.
  • the closing members 20 and 21 are so fixed to the casing 3 that the closing members 20 and 21 extend over the panel blow-off outlet 11 and a casing blow-off outlet 51 of the casing 3 of the air conditioner.
  • Closing members 22 and 23 are so fixed to the casing 3 that the closing member 22 extends over the panel blow-off outlet 10 and a casing blow-off outlet 52 of the casing 3, and the closing member 23 extends over the panel blow-off outlet 12 and a casing blow-off outlet 53 of the casing 3.
  • the closing members 20 and 21 are provided at the position spaced by the predetermined length X from the ends of the blow-off outlet. Therefore, when cold wind blown out from the indoor heat exchanger 7 strikes the closing member 20 (21) during air cooling time, the cold wind is capable of dividedly flowing to openings 31, 32 (33) positioned at both sides of the closing member 20 (21), as shown in Fig. 2.
  • end portions 16A and 16B of the wind direction blade 16 are covered with the cold wind blown thereto from the openings 32 and 33.
  • (interval X) of the closing members 20, 21/(width Y) thereof is set to: 0.2 ⁇ X/Y ⁇ 1.0
  • Figs. 3A and 3B show a modification of the embodiment.
  • guide plates 37 and 38 are respectively provided between the wind direction blade 16 positioned downstream from the closing members 20, 21 and projection portions 35, 36 projecting substantially horizontally from a lower end 3A of the casing 3 toward the closing members 20, 21.
  • Spaces 43 and 43 are provided between the projection portion 35 and the end portion 16A in the axial direction of the wind direction blade 16 and between the projection portion 36 and the end portion 16B in the axial direction of the wind direction blade 16, respectively.
  • the guide plates 37 and 38 are fixed to the decorative panel 2 and partly confront the end opening 32 positioned between the closing member 20 and the projection portion 35 and the end opening 33 positioned between the closing member 21 and the projection portion 36. As shown in Fig. 3B, the guide plates 37 and 38 have a plurality of through-holes 41.
  • a dimension D1 between both ends of a blow-off outlet constituted of the openings 32, 33, and 31 is smaller than a dimension D2 between both ends of a blow-off outlet (open section) on which the wind direction blade 16 is installed.
  • a part of a drain pan can be installed on a space positioned above the projection portions 35 and 36.
  • the projection portions 35 and 36 constitute a blow-off path-forming member.
  • the end openings 32, 33, and opening 31 constitute a blow-off path.
  • the projection portions 35 and 36 are constituted of a part of the drain pan (not shown), the construction of the indoor unit can be simplified and a cost reduction can be accomplished. Further, it is possible to form the spaces 43 and 43 for the guide plates 37 and 38 easily and at a low cost by cutting off a predetermined portion of the drain pan.
  • a part of cold air (cold wind) flowing through the openings 32 and 33 constituting part of the blow-off path is guided by the guide plates 37 and 38 toward the space 43 between the projection portion 35 and the end portion 16A in the axial direction of the wind direction blade 16 and the space 43 between the projection portion 36 and the end portion 16B in the axial direction of the wind direction blade 16.
  • the projections 35 and 36 form the blow-off outlet.
  • the part of the cold air (cold wind) is further guided to the end portions 16A and 16B in the axial direction of the wind direction blade 16.
  • parts of the guide plates 37 and 38 respectively overlap the openings 32 and 33 constituting the blow-off outlet, and holes 41 for guiding wind to the end portions 16A and 16B in the axial direction of the wind direction blade 16 are formed on the guide plates 37 and 38. Therefore, parts of cold wind flowing inside the openings 32 and 33 are curved to flow along the surface of each of the guide plates 37 and 38 by parts of the guide plates 37 and 38. The curved cold winds flow inside the spaces 43 and 43 along the guide plates 37 and 38 and then guided into the end portions 16A and 16B in the axial direction of the wind direction blade 16 through the holes 41 formed on the guide plates 37 and 38.
  • the guide plates 37 and 38 guide the cold wind to the axially end portions 16A and 16B of the wind direction blade 16 from the upstream side and further the guide section of the decorative panel 2 guides the cold wind to the back side of the end portions 16A and 16B from the downstream side. Accordingly, it is possible to more securely prevent dew from being formed on the peripheral surface of the end portions 16A and 16B.
  • the air conditioner of the present invention is capable of increasing a blow-off speed without forming dew at a blow-off outlet and is useful for improving air-conditioning performance without forming dew.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Duct Arrangements (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
EP98945578A 1997-10-17 1998-10-02 Air conditioner Expired - Lifetime EP0962716B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP28542497A JP3240977B2 (ja) 1997-10-17 1997-10-17 空気調和機
JP28542497 1997-10-17
PCT/JP1998/004450 WO1999020945A1 (fr) 1997-10-17 1998-10-02 Appareil de conditionnement d'air

Publications (3)

Publication Number Publication Date
EP0962716A1 EP0962716A1 (en) 1999-12-08
EP0962716A4 EP0962716A4 (en) 2001-10-17
EP0962716B1 true EP0962716B1 (en) 2005-01-05

Family

ID=17691352

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98945578A Expired - Lifetime EP0962716B1 (en) 1997-10-17 1998-10-02 Air conditioner

Country Status (8)

Country Link
EP (1) EP0962716B1 (zh)
JP (1) JP3240977B2 (zh)
CN (1) CN1143088C (zh)
AU (1) AU719975B2 (zh)
DE (1) DE69828490T2 (zh)
ES (1) ES2236938T3 (zh)
HK (1) HK1024944A1 (zh)
WO (1) WO1999020945A1 (zh)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6338676B1 (en) 1998-12-28 2002-01-15 Mitsubishi Denki Kabushiki Kaisha Air conditioner
JP3624813B2 (ja) * 2000-09-06 2005-03-02 ダイキン工業株式会社 空気調和装置の化粧パネル、吹出口ユニット、及び空気調和装置
US6830023B2 (en) 2002-11-07 2004-12-14 Briggs & Stratton Corporation Electromagnetic choke system for an internal combustion engine
JP5339998B2 (ja) * 2009-04-03 2013-11-13 三菱電機株式会社 空気調和機
US9574815B2 (en) * 2011-06-09 2017-02-21 Mitsubishi Electric Corporation Air-conditioning-apparatus indoor unit
WO2015092926A1 (ja) * 2013-12-20 2015-06-25 三菱電機株式会社 空気調和機
JP6427031B2 (ja) * 2015-02-20 2018-11-21 日立ジョンソンコントロールズ空調株式会社 空気調和機
JP6878056B2 (ja) 2017-03-14 2021-05-26 株式会社荏原製作所 めっき方法
DE102017006365A1 (de) * 2017-07-05 2019-01-10 Audi Ag Luftreinigungsanlage
JP7399156B2 (ja) * 2019-03-29 2023-12-15 三菱電機株式会社 空気調和機

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4740805Y1 (zh) * 1970-03-25 1972-12-11
JPH0718898Y2 (ja) * 1989-06-06 1995-05-01 株式会社東芝 空気調和機
JP3180370B2 (ja) * 1991-06-19 2001-06-25 松下電器産業株式会社 空気調和機の化粧パネル
JP3081480B2 (ja) * 1995-01-11 2000-08-28 三洋電機株式会社 空気調和機
JP3019743B2 (ja) * 1995-04-11 2000-03-13 ダイキン工業株式会社 空気調和機
JP3637504B2 (ja) * 1995-08-21 2005-04-13 協立エアテック株式会社 結露防止ライン型吹出口および結露防止ライン型吹出構造
JPH09264561A (ja) * 1996-03-27 1997-10-07 Matsushita Seiko Co Ltd 空気調和機の吹出装置

Also Published As

Publication number Publication date
DE69828490T2 (de) 2006-01-05
HK1024944A1 (en) 2000-10-27
JP3240977B2 (ja) 2001-12-25
CN1143088C (zh) 2004-03-24
EP0962716A1 (en) 1999-12-08
DE69828490D1 (de) 2005-02-10
WO1999020945A1 (fr) 1999-04-29
EP0962716A4 (en) 2001-10-17
JPH11118234A (ja) 1999-04-30
ES2236938T3 (es) 2005-07-16
CN1242831A (zh) 2000-01-26
AU719975B2 (en) 2000-05-18
AU9282198A (en) 1999-05-10

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