EP1703217B1 - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
EP1703217B1
EP1703217B1 EP06251294A EP06251294A EP1703217B1 EP 1703217 B1 EP1703217 B1 EP 1703217B1 EP 06251294 A EP06251294 A EP 06251294A EP 06251294 A EP06251294 A EP 06251294A EP 1703217 B1 EP1703217 B1 EP 1703217B1
Authority
EP
European Patent Office
Prior art keywords
fan
separator
enclosure
air conditioner
blowing port
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
EP06251294A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1703217A1 (en
Inventor
Tetsuo c/o Mitsubishi Denki K. K. Yamashita
Hideyuki c/o Mitsubishi Denki K. K. Ogata
Yoshiyuki c/o Mitsubishi Denki K. K. Nakagawa
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP1703217A1 publication Critical patent/EP1703217A1/en
Application granted granted Critical
Publication of EP1703217B1 publication Critical patent/EP1703217B1/en
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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • 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
    • F24F1/0083—Indoor units, e.g. fan coil units with dehumidification means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • 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
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0025—Cross-flow or tangential fans
    • 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
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0033—Indoor units, e.g. fan coil units characterised by fans having two or more fans
    • 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

Definitions

  • the present invention relates to an air conditioner, and more specifically, it concerns an indoor unit of an air conditioner, the indoor unit having a blowing port at each of upper and lower portions of the front surface thereof.
  • Patent Document 1 Hitherto, in order to keep a comfortable indoor temperature and humidity, an air conditioner that has a blowing port at each of the upper and lower portions thereof has been disclosed (refer to Patent Document 1, for example).
  • Patent Document 1 Japanese Unexamined Utility Model Registration Application Publication No. 55-67934 (pp. 3 to 4 and Fig. 3 )
  • Patent Document 2 Japanese Unexamined Patent Application Publication No. 61-153426 (p. 2 and Fig. 1 )
  • Patent Document 3 Japanese Unexamined Patent Application Publication No. 8-178338 (p. 3 and Fig. 2 )
  • Patent Documents 1 to 3 have involved problems in that they cannot make full use of the capabilities of the upper side blower (upper fans) and the lower side blower (lower fans), and that these blowers (fans) generate noise.
  • Patent Document 1 has a separator that projects in a mountain-shape in its cross section toward the front surface, between the upper blower and the lower blower, and that diverts sucked air upward and downward. Therefore, between each of the lower ends of the separator and respective one of the upper blower and the lower blower (i.e., on the suction side of each of the blowers), a predetermined gap over a predetermined range is not secured, thereby disturbing air flow and restricting an increase in air speed.
  • the arrangement disclosed in the Patent Document 2 is of a type that is formed simply by erecting a partition plate on the planar rear surface. Therefore, air sucked around the partition plate is subject to stagnation and/or disturbance, and a predetermined gap over a predetermined range is not secured on the suction side of each of the upper fan and the lower fan, thereby disturbing air flow and restricting an increase in air speed.
  • Patent Document 3 has a movable partition plate, and hence, it requires a moving mechanism.
  • a moving mechanism because of deterioration of maintainability due to an increase in the number of components and a rise in the weight, and due to possible failures and the like, and in addition, because of the need to secure a moving range of the partition plate, a predetermined gap over a predetermined range is not secured on suction side of each of the upper fan and the lower fan, thereby disturbing air flow and restricting an increase in air speed.
  • JP-A-2000/234 796 and JP-A-01/234 725 disclose air conditioners in accordance with the pre-characterizing portion of claim 1.
  • An object of the present invention is to obtain a simply-constructed air conditioner having a separator forming air flow that is smoothly diverted toward an upper fan and a lower fan, and that has a low disturbance and an increased speed.
  • a further object of the present invention is to obtain a low-noise air conditioner that is prevented from the reduction in air volume even under the condition of "blowoff by upper-fan alone" (in which only the upper fan is operated, with the lower fan stopped).
  • An air conditioner according to the present invention is defined in claim 1.
  • the crest of the central mountain portion of the corrugated separator is located further toward the rear surface side than a surface connecting the lower edge of the heat exchanger and the lower edge of the upper rear guider. Further, it may be located in the middle between the upper fan and the lower fan in the vertical direction. There may be provided a wind-direction adjusting plate for closing the lower blowing port or changing the direction of wind.
  • an indoor unit 100 of an air conditioner (the overall apparatus of this air conditioner is not shown) has an enclosure 1.
  • an upper blowing port 3 is provided at an upper portion thereof, and a lower blowing port 4 is provided at a lower portion thereof.
  • a suction port 2 is installed in the front central portion, and an upper airflow direction adjusting plate 5 and a lower airflow-direction adjusting plate 6 for varying the direction of airflow are installed in the upper blowing port 3 and the lower blowing port 4, respectively.
  • an upper cross-flow fan 9 and a lower cross-flow fan 10 for blowing airflow toward the upper blowing port 3 and the lower blowing port 4, respectively.
  • a heat exchanger 13 is installed inside the enclosure 1. At the upper edge of the heat exchanger 13, there is provided an upper blowing nozzle 7 for dividing off the upper blowing port 3 and the heat exchanger 13, while at the lower edge of the heat exchanger 13, there is provided a lower blowing nozzle 8 for dividing off the lower blowing port 4 and the heat exchanger 13.
  • the corrugated separator 12 which has a substantially W-shaped cross section, includes a central mountain portion (hereinafter referred to as a "bump") 12c which projects in a substantially arcuate shape in the cross section toward the front surface, at the central portion, and an upper valley portion 12b and a lower valley portion 12d, each of which caves in a substantially arcuate shape in the cross section thereof toward the rear surface of the enclosure and is smoothly connected with a respective one of the upper part and the lower part of the bump 12c.
  • a central mountain portion hereinafter referred to as a "bump" 12c which projects in a substantially arcuate shape in the cross section toward the front surface, at the central portion
  • an upper valley portion 12b and a lower valley portion 12d each of which caves in a substantially arcuate shape in the cross section thereof toward the rear surface of the enclosure and is smoothly connected with a respective one of the upper part and the lower part of the bump 12c.
  • the lower edge 14a of the upper rear guide 14 and the upper edge 12a of the upper valley portion 12b of the corrugated separator 12 are connected, and the upper edge 15a of the lower rear guide 15 and the lower edge 12e of the lower valley portion 12d of the corrugated separator 12 are connected.
  • indoor air is sucked in from the suction port 2 by being drawn with the upper cross-flow fan 9 and the lower cross-flow fan 10, and after having been subjected to a heat exchange by the heat exchanger 13, it is diverted while being rectified upward and downward by the bump 12c with a substantially arcuate cross section.
  • the diverted air flows are smoothly guided by the upper valley portion 12b and the lower valley portion 12d, and sucked into the upper cross-flow fan 9 and the lower cross-flow fan 10, respectively.
  • the air sucked by the fans is blown off from the upper blowing port 3 and the lower blowing port 4 at angles predetermined by the upper airflow-direction adjusting plate 5 and the lower airflow-direction adjusting plate, respectively.
  • the upper valley portion 12b, the bump 12c, and the lower valley portion 12d are connected by a smooth curve to thereby exhibit a substantially W-shaped cross section.
  • the upper edge 12a of the upper valley portion 12b and the lower edge 12e of the lower valley portion 12d are connected to the lower edge 14a of the upper rear guide 14 and the upper edge 15a of the lower rear guide 15, a corrugated casing (number of valleys: four) is formed of the upper rear guide 14, the separator 12, and the lower rear guide 15. Therefore, there occurs no air flow disturbance at the time of the above-described diversion, and therefore, a low-noise indoor unit 100 is formed. In addition to the absence of disturbance, rectification and speed-up of air flow are achieved by the upper rear guide 14 and the lower rear guide 15, so that air volume is increased.
  • an air conditioner can be obtained that is simple in construction, and in which an increase in the number of components and a rise in the weight are prevented to thereby maintain an low manufacturing cost, as well as an improved reliability is achieved.
  • Fig. 2 is a longitudinal sectional view explaining the construction of an air conditioner according to a second embodiment of the present invention.
  • parts that are the same as or equivalent to those in the first embodiment ( Fig. 1 ) are designated by the same reference numerals, and descriptions thereof are partly omitted.
  • a broken line A in Fig. 2 is a line connecting the lower edge 13a of the heat exchanger 13 and the lower edge 14a of the upper rear guide 14, and the crest of the bump 12c of the separator 12 is characterized by being located further toward the rear surface side than the broken line A.
  • Fig. 3 is a longitudinal sectional view of the main portion of a separator of an air conditioner according to a third embodiment of the present invention.
  • parts that are the same as or equivalent to those in the first embodiment ( Fig. 1 ) are designated by the same reference numerals, and descriptions thereof are partly omitted.
  • the ratio of air volume between the upper and lower fans becomes nearly equal (namely, close to (1:1)). Consequently, the speed of air passing through the heat exchanger 13 is made uniform, resulting in reduced noise. Furthermore, the uniformization of the speed of air passing through the heat exchanger 13 eliminates nonuniformity in heat exchange, thereby enhancing heat exchanger effectiveness.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
EP06251294A 2005-03-16 2006-03-10 Air conditioner Active EP1703217B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005074817A JP4766889B2 (ja) 2005-03-16 2005-03-16 空気調和機

Publications (2)

Publication Number Publication Date
EP1703217A1 EP1703217A1 (en) 2006-09-20
EP1703217B1 true EP1703217B1 (en) 2009-01-21

Family

ID=36606095

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06251294A Active EP1703217B1 (en) 2005-03-16 2006-03-10 Air conditioner

Country Status (3)

Country Link
EP (1) EP1703217B1 (enrdf_load_stackoverflow)
JP (1) JP4766889B2 (enrdf_load_stackoverflow)
ES (1) ES2318692T3 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017041726A1 (zh) * 2015-09-11 2017-03-16 珠海格力电器股份有限公司 风量调节装置及方法和空调柜机

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5410047B2 (ja) * 2008-07-25 2014-02-05 三洋電機株式会社 空気調和機
CN105841208B (zh) * 2013-07-26 2017-12-22 广东美的制冷设备有限公司 立式空调器风道结构及立式空调器室内机
CN106091319A (zh) * 2016-06-01 2016-11-09 珠海格力电器股份有限公司 空调器
CN106287966A (zh) * 2016-08-26 2017-01-04 沈炜 静音空调
CN111089405B (zh) * 2019-12-24 2020-11-24 珠海格力电器股份有限公司 单离心风机出风控制方法、装置及控制器和空调机组

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5663914U (enrdf_load_stackoverflow) * 1979-10-24 1981-05-29
JPS61153426A (ja) * 1984-12-27 1986-07-12 Matsushita Electric Ind Co Ltd 空気調和装置
JP2591041B2 (ja) * 1988-03-16 1997-03-19 三菱電機株式会社 空気調和機
JP2810445B2 (ja) * 1989-09-29 1998-10-15 三洋電機株式会社 空気調和機
JPH03158630A (ja) * 1989-11-15 1991-07-08 Sanyo Electric Co Ltd 熱交換ユニット
JP2689802B2 (ja) * 1992-01-23 1997-12-10 松下電器産業株式会社 空気調和機
JPH07233957A (ja) * 1994-02-24 1995-09-05 Toshiba Corp 空気調和機
JPH08178338A (ja) * 1994-12-27 1996-07-12 Toshiba Corp 空気調和装置の室内機
JP3661471B2 (ja) * 1999-02-17 2005-06-15 松下電器産業株式会社 空気調和機

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017041726A1 (zh) * 2015-09-11 2017-03-16 珠海格力电器股份有限公司 风量调节装置及方法和空调柜机

Also Published As

Publication number Publication date
JP4766889B2 (ja) 2011-09-07
EP1703217A1 (en) 2006-09-20
JP2006258344A (ja) 2006-09-28
ES2318692T3 (es) 2009-05-01

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