EP1367336B1 - Indoor air conditioner - Google Patents

Indoor air conditioner Download PDF

Info

Publication number
EP1367336B1
EP1367336B1 EP01273571A EP01273571A EP1367336B1 EP 1367336 B1 EP1367336 B1 EP 1367336B1 EP 01273571 A EP01273571 A EP 01273571A EP 01273571 A EP01273571 A EP 01273571A EP 1367336 B1 EP1367336 B1 EP 1367336B1
Authority
EP
European Patent Office
Prior art keywords
blown
air
air volume
outlet
upward
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
EP01273571A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1367336A8 (en
EP1367336A4 (en
EP1367336A1 (en
Inventor
Tomohiro Daikin Industries Ltd. YABU
Mikayo Daikin Industries Ltd. YAMANAKA
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
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Filing date
Publication date
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of EP1367336A1 publication Critical patent/EP1367336A1/en
Publication of EP1367336A8 publication Critical patent/EP1367336A8/en
Publication of EP1367336A4 publication Critical patent/EP1367336A4/en
Application granted granted Critical
Publication of EP1367336B1 publication Critical patent/EP1367336B1/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
    • F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
    • 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
    • F24F1/005—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted on the floor; standing on the floor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air

Definitions

  • the present invention relates to an indoor air conditioner disposed inside of a room, and more specifically relates to an indoor air conditioner having upward and side outlets.
  • EP-A-1 014 011 there is disclosed an airflow control method and airflow controller for an air conditioner indoor unit capable of executing air conditioning so that indoor temperature distribution becomes uniform without any sense of airflow during heating operation.
  • a turbofan is provided that has an axis extending in an anteroposterior direction and blows air taken in from a front surface side radially outwardly with respect to an axis inside a casing and a heat exchanger disposed on the front surface side of the turbofan inside the casing.
  • the casing is provided with outlet ports for blowing air from the turbofan in the vertical direction and the horizontal direction.
  • a control signal is output by a flap control section to an upper flap stepping motor and a left-hand flap stepping motor so as to narrow the openings of the upper, right-hand and left-hand flaps and make the opening of the lower flap wider than the openings of the upper, right-hand and left-hand flaps.
  • an indoor air conditioner having an upward outlet formed on a top face of a main unit and a side outlet formed on at least one side face of the main unit, the indoor air conditioner comprising: air volume control means for controlling blow of air so that a blown-off air volume from the upward outlet is larger than a blown-off air volume from the side outlet in a cooling operation, characterized in that: a ratio of the blown-off air volume from the upward outlet to the blown-off air volume from the side outlet is set to 2:1 to 4:1 in a case where a side blown-off air is blown-off from the side outlet on one of side faces of the main unit.
  • an indoor air conditioner having an upward outlet formed on a top face of a main unit and a side outlet formed on a side face of the main unit, the indoor air conditioner comprising: air volume control means for controlling blow of air so that a blown-off air volume from the side outlet is equal to or larger than a blown-off air volume from an upward outlet in a heating operation, characterized in that: a ratio of the blown-off air volume from the upward outlet to the blown-off air volume from the side outlet is set to 1:2 to 1:1 in a case where a side blown-off air is blown-off from the side outlet on one of side faces of the main unit.
  • the present invention takes a new standpoint of controlling the volume of air blown off from the indoor air conditioner into upward and side directions so as to solve a problem of temperature nonuniformity during indoor cooling and heating operations, and thus to provide an air-conditioned environment as cozy as possible.
  • the indoor air conditioner of the present invention is composed of air outlets 22, 23, 24 disposed on an upper face 12 and one or both side faces 13, 14 of the main unit, and provided with an air volume control means for controlling the volume of air blown off from the upward outlet 22 and from the side outlets 23, 24.
  • Swing flaps 32 and shutters 33 for increasing or decreasing air passage areas at the air outlets are used as means for controlling the air volume.
  • the present invention is directed to improve nonuniformity of temperature distribution in indoor cooling and heating operations controlling the volume of air blown off from the upward and side outlets of the indoor air conditioner so as to provide an air-conditioned environment as cozy as possible.
  • PMV Predicted Mean Vote
  • PPD Predicted Percentage of Dissatisfied index
  • the PMV index has four elements regarding environment: temperature, humidity, airflow and radiation, and two elements regarding human: metabolic quantity and clothing quantity. Values of the PMV index corresponds to thermal senses.
  • the PMV value +3 is “hot”, +2 is “warm”, +1 is “warmish”, ⁇ 0 is “neither hot nor cold", -1 is “coolish”, -2 is “cool”, and -3 is “cold”.
  • the PMV index falls within "the range of -0.5 to +0.5.” Therefore, in the present invention, "the range of -0.5 to +0.5" has been adopted as a preferable PMV index range.
  • the PPD index is defined as "an index for quantitatively predicting the percentage of people who feel thermally dissatisfied during staying in a given environment.”
  • the ISO standards state that the PPD index is desirably 10% or less for coziness in a residential environment of human beings.
  • a later-described "PMV cozy zone occupancy” is used in a cooling operation when setting a ratio of an upward blown-off air volume to a side blown-off air volume.
  • a "vertical temperature difference” is used in a cooling operation when setting a blown-off angle of side air.
  • a "PPD index" is used when setting a ratio of an upward blown-off air volume to a side blown-off air volume and setting a blown-off angle of side air.
  • PMV cozy zone occupancy is defined as "a ratio of the zone (cozy zone) where the PMV index is in the range of -0.5 to +0.5 to an other residual zone in an air-conditioned space (indoor space)".
  • Fig. 2 is a graph for setting the ratio of an upward blown-off air volume to a side blown-off air volume in cooling operation, and shows the relation between the upward blown-off air volume and the PMV cozy zone occupancy when the side blown-off air volume is set to 1.
  • the graph indicates that the PMV cozy zone occupancy rises while the ratio of the upward blown-off air volume to the side blown-off air volume shifts from 1:1 to 4:1, and that thereafter the PMV cozy zone occupancy decreases.
  • the range from 2:1 to 4:1 of the blown-off air volume ratio has been adopted as a preferable range, as a result of comparison between the above-stated and the PMV cozy zone occupancy of 90% or more in radiator air conditioning operation.
  • air volume control means is operated such that the blown-off air volume UC from an upward outlet is larger than blown-off air volume SC 1 , SC 2 from one or both of side outlets.
  • Fig. 5 is a graph for setting a blown-off angle of side blown-off air in the cooling operation, and shows the relation between change of a side blown-off angle and difference of vertical temperature in air-conditioned space.
  • the range within 1.5 °C (the range where the side blown-off angle is not smaller than -20 degree) has been adopted as a preferable range of the vertical temperature difference in air-conditioned space during cooling operation.
  • the air volume control means In the cooling operation, in order to prevent excessive fall of air temperature in the vicinity of the floor face, it is preferable for the air volume control means to have a function of controlling blown-off air so that air blown-off from the side outlets 23, 24 is blocked and that air only from the upward outlet is blown off.
  • Fig. 6 is a graph for setting the ratio of an upward blown-off air volume to a side blown-off air volume in the heating operation, and shows the relation between side air volume and PPD index when upward blown-off air volume is set to 1.
  • the graph indicates that the PPD index value is minimum when the ratio of the upward blown-off air volume to the side blown-off air volume is approximately 1:1, and that the PPD index value rises as the side blown-off air volume increases.
  • the range in the ratio of the upward blown-off air volume to the side blown-off air volume from 1:1 to 1:2 has been adopted as a preferable range, from a viewpoint of making the PPD index value better than the PPD index value (total mean value of 7.11) in radiator heating operation.
  • the air volume control means is operated such that blown-off air volume SW 1 , SW 2 from side outlet(s) is equal to or larger than the blown-off air volume UW from the upward outlet.
  • the ratio (air volume ratio) of the blown-off air volume UW from the upward outlet to the blown-off air volume SW 1 , SW 2 from the side outlet (s), UW:SW 1 (or SW 2 ), is preferably in the range of 1:2 to 1:1 in the case where side blown-off air is blown-off from a side outlet on one side face ( Fig. 7 ).
  • the ratio (air volume ratio) of a blown-off air volume SW 1 from a left-side outlet to a blown-off air volume UW from an upward outlet and to a blown-off air volume SW 2 from a right-side outlet is preferably ranged from 2:1:2 to 1:1:1.
  • Fig. 9 is a graph for setting a blown-off angle of side blown-off air in the heating operation, and shows the relation between the blown-off angle of side blown-off air S 1 , S 2 and the PPD index.
  • the PPD index value becomes larger as the blown-off angle of the side blown-off air S 1 , S 2 increases, and the PPD index value exceeds approximately 6.7 when the blown-off angle is larger than the horizontal (0°).
  • the horizontal (0°) is set to the upper limit of the blown-off angle of the side blown-off air S 1 , S 2 , so that the blown-off angle does not become larger than the horizontal.
  • Fig. 1 shows a floor-installation type indoor air conditioner 1 is disposed right under a window 3 as an example.
  • excellent heating effect cold draft decreasing effect
  • the indoor air conditioner 1 is comprised of an induction port 21 formed on a front face 11 of a main unit, an upward outlet 22 formed on a top face 12 of the main unit, and side outlets 23, 24 formed on both-side faces 13, 14.
  • the upward outlet 22 and the side outlets 23, 24 respectively have swing flaps 32 and shutters 33 for controlling quantities and angles of blown-off air.
  • the shutters 33 in the side outlets 23, 24 may be completely closed.
  • the ratio of side blown-off air volume (SW 1 , SW 2 ) to upward blown-off air volume (UW) is set to 2:1 to 1:1 (in the case of Fig. 7 ) or 2:1:2 to 1:1:1 (in the case of Fig. 8 ) as stated above.
  • the side air blown-off angle is preferably in the range of 0° (horizontal) to -45° in the heating operation.
  • the indoor air conditioner of the present invention having the upward outlet and the side outlets make it possible to optimally set the ratio of the side blown-off air volume to the volume of upward blown-off air in each of cooling operation and heating operation.
  • the indoor air conditioner of the present invention has an effect of providing an air-conditioned space where nonuniformity in temperature distribution is improved in comparison with the conventional conditioners.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)
  • Air-Flow Control Members (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Air-Conditioning For Vehicles (AREA)
EP01273571A 2001-02-01 2001-12-25 Indoor air conditioner Expired - Lifetime EP1367336B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2001002587 2001-02-01
JP2001025875A JP3624837B2 (ja) 2001-02-01 2001-02-01 室内空気調和機
JP2001025875 2001-02-01
PCT/JP2001/011344 WO2002061345A1 (fr) 2001-02-01 2001-12-25 Climatiseur d'interieur

Publications (4)

Publication Number Publication Date
EP1367336A1 EP1367336A1 (en) 2003-12-03
EP1367336A8 EP1367336A8 (en) 2004-02-25
EP1367336A4 EP1367336A4 (en) 2007-03-14
EP1367336B1 true EP1367336B1 (en) 2009-04-29

Family

ID=18890789

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01273571A Expired - Lifetime EP1367336B1 (en) 2001-02-01 2001-12-25 Indoor air conditioner

Country Status (7)

Country Link
EP (1) EP1367336B1 (ja)
JP (1) JP3624837B2 (ja)
AT (1) ATE430291T1 (ja)
AU (1) AU2002219526B2 (ja)
DE (1) DE60138571D1 (ja)
ES (1) ES2324592T3 (ja)
WO (1) WO2002061345A1 (ja)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2844870A1 (fr) * 2002-09-20 2004-03-26 Richard Zabiegly Dispositif autonome a deplacement d'air pour la climatisaton d'un local
AU2004316706B2 (en) * 2004-03-04 2008-07-31 Lg Electronics Inc. Indoor unit in air conditioner
EP1842010B1 (en) * 2005-01-27 2014-03-12 LG Electronics Inc. Indoor unit of air conditioner
WO2007091768A2 (en) * 2006-02-07 2007-08-16 Lg Electronics Inc. Indoor unit of air conditioner
JP5223901B2 (ja) * 2010-10-15 2013-06-26 ダイキン工業株式会社 空気調和機
JP5932968B2 (ja) * 2012-03-01 2016-06-08 三菱電機株式会社 床置き形空気調和機
KR101554722B1 (ko) * 2015-01-23 2015-09-21 황용희 풍량 가변장치를 구비하는 공기조화기
KR102530178B1 (ko) * 2016-01-07 2023-05-10 삼성전자주식회사 공기조화기
CN108917135B (zh) * 2018-08-03 2020-06-02 奥克斯空调股份有限公司 一种体感风量调节方法、装置及空调器
US11391494B2 (en) * 2020-08-10 2022-07-19 Donald Eugene Smith Multiple directional blow unit cooler

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3182785B2 (ja) * 1991-05-20 2001-07-03 株式会社日立製作所 空気調和機
JP3223819B2 (ja) * 1996-11-15 2001-10-29 ダイキン工業株式会社 空気調和機
JP3137042B2 (ja) * 1997-08-08 2001-02-19 ダイキン工業株式会社 空気調和機の室内機の気流制御方法および気流制御装置
JP2947236B2 (ja) * 1997-08-08 1999-09-13 ダイキン工業株式会社 空気調和機の吹出口構造
JP3061026B2 (ja) * 1997-12-18 2000-07-10 ダイキン工業株式会社 空気調和機の室内機
JP3820799B2 (ja) * 1999-06-09 2006-09-13 ダイキン工業株式会社 空気調和装置

Also Published As

Publication number Publication date
ES2324592T3 (es) 2009-08-11
DE60138571D1 (de) 2009-06-10
EP1367336A8 (en) 2004-02-25
ATE430291T1 (de) 2009-05-15
JP3624837B2 (ja) 2005-03-02
EP1367336A4 (en) 2007-03-14
WO2002061345A1 (fr) 2002-08-08
AU2002219526B2 (en) 2006-04-13
JP2002228241A (ja) 2002-08-14
EP1367336A1 (en) 2003-12-03

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