EP1245908A2 - Klimaanlage und Innenraumeinheit dafür - Google Patents

Klimaanlage und Innenraumeinheit dafür Download PDF

Info

Publication number
EP1245908A2
EP1245908A2 EP02006893A EP02006893A EP1245908A2 EP 1245908 A2 EP1245908 A2 EP 1245908A2 EP 02006893 A EP02006893 A EP 02006893A EP 02006893 A EP02006893 A EP 02006893A EP 1245908 A2 EP1245908 A2 EP 1245908A2
Authority
EP
European Patent Office
Prior art keywords
indoor
indoor unit
tangential fan
air
heat exchanger
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.)
Granted
Application number
EP02006893A
Other languages
English (en)
French (fr)
Other versions
EP1245908B1 (de
EP1245908A3 (de
Inventor
Kazuhiro c/o Mitsubishi Heavy Ind. Ltd. Suzuki
Hajime Mitsubishi Heavy Ind. Ltd. Izumi
Kiyoshi c/o Mitsubishi Heavy Ind. Ltd. Suenaga
Tetsuo c/o Mitsubishi Heavy Ind. Ltd. Tominaga
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 Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy 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
Priority claimed from JP2001093886A external-priority patent/JP2002295861A/ja
Priority claimed from JP2001093884A external-priority patent/JP2002295862A/ja
Priority claimed from JP2001093885A external-priority patent/JP2002295863A/ja
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of EP1245908A2 publication Critical patent/EP1245908A2/de
Publication of EP1245908A3 publication Critical patent/EP1245908A3/de
Application granted granted Critical
Publication of EP1245908B1 publication Critical patent/EP1245908B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F24F1/0087—Indoor units, e.g. fan coil units with humidification means
    • 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
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0057—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall

Definitions

  • This invention relates to air conditioners that cool or warm the air to condition room environments as demanded, and particularly to indoor units of air conditioners.
  • FIG. 10 shows a mechanical structure of the indoor unit, an internal section of which is observed from the lateral side.
  • reference numeral 1 designates a body or casing of the indoor unit
  • reference numeral 2 designates an air inlet surface having numerous slits
  • reference numerals 3a, 3b, and 3c designate indoor heat exchangers
  • reference numeral 4 designates an air duct
  • reference numeral 5 designates a tangential fan
  • reference numeral 6 designates a stabilizer
  • reference numeral 7 designates an air outlet.
  • the conventional air conditioner using the aforementioned indoor unit suffers from various problems, which will be described below.
  • the indoor unit provides two narrow areas (or small gaps) in the periphery of the tangential fan 5.
  • One is provided between the tangential fan 5 and the stabilizer 6, and the other is provided between the tangential fan 5 and a casing 8, which is a part of an inwardly bent portion of the body frame and is arranged opposite to the stabilizer 6 via the tangential fan 5.
  • the indoor air When the indoor air flows into the air duct 4 under the effect of the negative pressure, it encounters refrigerant pipes of the indoor heat exchangers 3a, 3b, and 3c respectively, so that it is varied in flow direction, intensity, and speed. That is, flows of the indoor air transmitted through the indoor heat exchangers may have different velocities, which depends upon the transmitted positions of the indoor heat exchangers. Therefore, it is possible to estimate various distributions of velocities with respect to the flows of the indoor air transmitted through the indoor heat exchangers, respectively.
  • the flow of the indoor air transmitted through the indoor heat exchanger 3a which is arranged proximately to the tangential fan 5, becomes extreme in the velocity distribution.
  • the aforementioned flow of the indoor air is continuously cut by the blades of the tangential fan 5 that is rotating. This causes a particular kind of noise called 'Nz' sound in the indoor unit 1.
  • An air conditioner of this invention is basically composed of an outdoor unit and an indoor unit.
  • the outdoor unit has an outdoor heat exchanger for performing heat exchanging between outdoor air and refrigerant that is cooled or warmed by indoor air.
  • the indoor unit contains indoor heat exchangers for performing heat exchanging between the indoor air and the refrigerant that is cooled or warmed by the outdoor air, a tangential fan forcing the indoor air to flow through the indoor heat exchangers, and a stabilizer that is arranged in proximity to the tangential fan.
  • dimensions of the indoor unit are determined to satisfy at least one of the three relationships as follows: L 1 ⁇ L 2 1.0s ⁇ L 1 ⁇ 1.3s 1.2s ⁇ L 2 ⁇ 2.0s
  • 'L 1 ' denotes a distance between the circumferential surface of the tangential fan and the stabilizer
  • 'L 2 ' denotes a distance between the circumferential surface of the tangential fan and a casing that is arranged opposite to the stabilizer via the tangential fan
  • 's' denotes a minimal gap between adjoining blades of the tangential fan.
  • dimensions of the indoor unit are determined to satisfy the relationship 2.5d ⁇ L, where 'L' denotes a distance between the circumferential surface of the tangential fan and its proximate indoor heat exchanger, and 'd' denotes a flow diameter of a refrigerant circulation pipe installed in the indoor heat exchanger.
  • L 3.5d
  • dimensions of the indoor unit are determined to satisfy the relationship 1.5L 1 ⁇ L 2 , where 'L 1 ' denotes a distance between the circumferential surface of the tangential fan and its opposite surface of the proximate indoor heat exchanger, and 'L 2 ' denotes a distance between the circumferential surface of the tangential fan and the boundary between the proximate indoor heat exchanger and its adjoining indoor heat exchanger.
  • L 2 ⁇ 3.5L 1 it is possible to introduce another relationship L 2 ⁇ 3.5L 1 .
  • FIG. 1 shows an outline layout and construction of the air conditioner of the first embodiment.
  • the air conditioner is basically composed of two units, namely an outdoor unit 10 and an indoor unit 20, between which refrigerant circulates via a refrigerant pipe 30.
  • the outdoor unit 10 is composed of an outdoor heat exchanger 11, a compressor 12, and a propeller fan.
  • the outside heat exchanger 11 performs heat exchanging between the outdoor air and the refrigerant that is cooled or warmed by the indoor air.
  • the compressor 12 sends the refrigerant to the outdoor heat exchanger 11 or indoor heat exchangers, which will be described later.
  • the propeller fan 13 forces the outdoor air to flow into the outdoor heat exchanger 11.
  • the indoor unit 20 is composed of indoor heat exchangers 23a, 23b, and 23c, a tangential fan 25, and a stabilizer 26.
  • the indoor heat exchangers 23a, 23b, and 23c perform heat exchanging between the indoor air and the refrigerant that is cooled or warmed by the outdoor air.
  • the tangential fan 25 rotates to cause movement or flow of the indoor air through the indoor heat exchangers 23a, 23b, and 23c.
  • the stabilizer 26 is arranged proximately to the tangential fan 25 to produce an exhausting force for the indoor air.
  • FIG. 2 shows an internal mechanical structure of the indoor unit 20 in detail.
  • the indoor unit 20 also contains a body or casing 21, an air inlet surface 22, an air duct 24, and an air outlet 27.
  • the air inlet surface 22 covers the front side and upper side of the body 21 of the indoor unit 20.
  • the air inlet surface 22 has numerous slits that may substantially block the indoor heat exchangers 23a, 23b, and 23c from view and that ensures air inflow in an effective manner.
  • the indoor heat exchangers 23a, 23b, and 23c are arranged in proximity to the front side and upper side of the body 21 of the indoor unit 20. That is, they are arranged to substantially encompass the tangential fan 25 with appropriate gaps therebetween.
  • the present embodiment uses three indoor heat exchangers; however, the number and arrangement of the indoor heat exchangers may vary greatly depending upon the size and type of the indoor unit. Therefore, it can be said that the number and arrangement of the indoor heat exchangers is not a main factor in this invention.
  • the air duct 24 provides air flows between the indoor heat exchangers 23a, 23b, and 23c and the tangential fan 25 respectively, and it is defined by the body 21 and a casing 28, which corresponds to a part of an inwardly bent portion of the body frame.
  • Both ends of the tangential fan 25 are defined by circular disks 25a, the center of which is pivotally supported by a shaft and the like. Between the circular disks 25a, the prescribed number of blades 25b are arranged at equal spacing therebetween in the circumferential direction of the tangential fan 25.
  • a drive motor (not shown) drives the tangential fan 25 to rotate in the direction of the arrow shown in FIG. 2.
  • the stabilizer 26 is 'horizontally' elongated to have substantially the same length as the tangential fan 25. That is, the stabilizer 26 is arranged just above the air outlet 27 and is arranged in parallel to and in proximity to the tangential fan 25.
  • the refrigerant is compressed by the compressor 12 to produce high temperature and high pressure 'gaseous' refrigerant, which is sent to the indoor unit 20 via a refrigerant pipe 30. Therefore, the gaseous refrigerant circulates through the indoor heat exchangers 23a, 23b, and 23c.
  • the heat of the high temperature and high pressure gaseous refrigerant that passes through the indoor heat exchangers 23a, 23b, and 23c is transferred to the indoor air that is input due to the rotation of the tangential fan 25. Therefore, the warmed air will be supplied into the room by the indoor unit 20.
  • the high temperature and high pressure gaseous refrigerant whose heat may be exhausted in the indoor air is subjected to condensation and liquefaction by the indoor heat exchangers 23a, 23b, and 23c, so that it is converted to high temperature and high pressure 'liquid' refrigerant.
  • the high temperature and high pressure liquid refrigerant is sent back to the outdoor unit 10 via the refrigerant pipe 30, wherein it passes through an expansion valve (not shown). While passing through the expansion valve, it is converted to low temperature and low pressure liquid refrigerant, which is forwarded to the outdoor heat exchanger 11.
  • the low temperature and low pressure liquid refrigerant passing through the outdoor heat exchanger 11 removes the heat from the outdoor air, which is input due to the rotation of the propeller fan 13.
  • the refrigerant inversely flows through the refrigerant pipe 30. That is, the high temperature and high pressure gaseous refrigerant that is compressed by the compressor 12 is sent to the outdoor heat exchanger 11 via the refrigerant pipe 30.
  • the heat of the high temperature and high pressure gaseous refrigerant is transferred to the outdoor air, so that the gaseous refrigerant is subjected to condensation and liquefaction, and is converted to high temperature and high pressure liquid refrigerant, which is supplied to the expansion valve in the outdoor unit 10. While passing through the expansion valve, it is converted to low temperature and low pressure liquid refrigerant, which is sent to the indoor unit 20 via the refrigerant pipe 30.
  • the low temperature and low pressure liquid refrigerant sequentially passes through the indoor heat exchangers 23a, 23b, and 23c.
  • the low temperature and low pressure liquid refrigerant removes the heat from the indoor air, so that it is subjected to evaporation and gasification, and is converted to low temperature and low pressure gaseous refrigerant, which is again sent to the compressor 12.
  • the aforementioned processes are repeated.
  • reference symbol L 1 designates a distance between the circumferential surface of the tangential fan 25 and the stabilizer 26, wherein the circumferential surface of the tangential fan 25 is defined by outer edges of the blades 25b that are subjected to circumferential movement during rotation.
  • reference symbol L 2 designates the shortest distance between the circumferential surface of the tangential fan 25 and the casing 28, which is arranged opposite to the stabilizer 26 via the tangential fan 25.
  • Reference symbol 's' designates a minimal gap between adjoining blades 25b of the tangential fan 25.
  • the prescribed dimensions are established based on the following relationships (a), (b), and (c).
  • L 1 ⁇ L 2 1.0s ⁇ L 1 ⁇ 1.3s 1.2s ⁇ L 2 ⁇ 2.0s
  • the distance L 1 is arranged close to the vortex flow. As the distance L, becomes smaller, the air blowing power (or wind power) increases; however, the noise level also increases correspondingly. In addition, as the distance L 2 becomes smaller, the air blowing power increases. Because the aforementioned relationship (a) is established between the distances L 1 and L 2 , the indoor unit 20 can exhibit good aerodynamic performance in any one of the warming mode, cooling mode, and dry mode (dehumidifying mode) while demonstrating noticeable reduction in noise.
  • the indoor unit 20 can exhibit good aerodynamic performance in any one of the warming mode, cooling mode, and dry mode while demonstrating noticeable reduction in noise.
  • prescribed measurements were performed with respect to noise levels actually produced by the indoor unit 20.
  • the measurement result is shown in FIG. 3, which is created using the 'fixed' wind power for the air outlet 27 against each of'dimensionless' values that are produced by dividing the distance L 1 between the tangential fan 25 and stabilizer 26 by the minimal gap s of the adjoining blades 25b.
  • the horizontal axis represents the dimensionless value 'L 1 /s'
  • the vertical axis represents the noise level dB(A).
  • FIG. 3 shows that the aerodynamic performance is improved while the noise level is extremely increased.
  • L 1 /s>1.3 i.e., L 1 >1.3s
  • FIG. 3 also shows that the noise level is greatly increased. It can be assumed that the indoor unit 20 causes a relatively large amount of noise because the tangential fan 25 may perform the exhausting action insufficiently to allow the occurrence of the back flow of the air into the air duct 24. If the indoor unit 20 is designed to meet the aforementioned range of L 1 >1.3s, it may be necessary to accept the unwanted reduction of the aerodynamic performance and the increase of the size of the indoor unit 20.
  • the indoor unit 20 could demonstrate good aerodynamic performance in either the cooling or warming operation while demonstrating noticeable reduction in noise.
  • prescribed measurements were performed with respect to the noise levels actually produced by the indoor unit 20.
  • the measurement results are shown in FIG. 4, which is created using the 'fixed' wind power for the air outlet 27 against each of the 'dimensionless' values that are produced by dividing the distance L 2 between the casing 28, arranged opposite to the stabilizer 26, and the circumferential surface of the tangential fan 25 by the minimal gap s of the adjoining blades 25b.
  • the horizontal axis represents the dimensionless value 'L 2 /s'
  • the vertical axis represents the noise level dB(A).
  • FIG. 4 shows that in the range of L 2 /s ⁇ 1.2 (i.e., L 2 ⁇ 1.2s), the aerodynamic performance is improved while the noise level is extremely increased.
  • L 2 /s>2.0 i.e., L 2 >2.0s
  • the noise level is increased as well.
  • the indoor unit 20 causes a relatively large noise because the tangential fan 25 may perform the exhausting action insufficiently to allow the occurrence of the back flow of the air into the air duct 24. If the indoor unit 20 is designed to meet the aforementioned range of L 2 >2.0s, it may be necessary to accept the unwanted reduction of the aerodynamic performance and the increase of the size of the indoor unit 20.
  • the present embodiment determines dimensions of the indoor unit 20 to simultaneously satisfy the aforementioned relationships (a), (b), and (c) with respect to the two narrow areas that are arranged around the tangential fan 25.
  • the present embodiment determines dimensions of the indoor unit 20 to simultaneously satisfy the aforementioned relationships (a), (b), and (c) with respect to the two narrow areas that are arranged around the tangential fan 25.
  • the present embodiment is designed to simultaneously satisfy the aforementioned relationships (a), (b), and (c) with respect to the two narrow areas around the tangential fan 25.
  • it is not always required to simultaneously satisfy the aforementioned three relationships (a), (b), and (c). That is, it is expected to demonstrate certain effects by determining dimensions of the indoor unit 20 based on at least one relationship only. For this reason, it is possible to provide various modifications as follows:
  • FIG. 5 shows an internal mechanical structure of an indoor unit of an air conditioner in accordance with a second embodiment of the invention, wherein parts identical to those shown in FIG. 2 are designated by the same reference numerals; hence, the description thereof will be omitted.
  • the indoor unit of the second embodiment shown in FIG. 5 is partially modified in dimensions as compared with the indoor unit of the first embodiment shown in FIG. 2. That is, the outstanding technical feature of the second embodiment is to establish the following relationship between the tangential fan 25 and its proximate indoor heat exchanger 23a in which the prescribed number of refrigerant circulation pipes are arranged. 2.5d ⁇ L ⁇ 3.5d where 'L' denotes a distance between the circumferential surface of the tangential fan 25 and its proximate indoor heat exchanger 23a, and 'd' denotes a 'flow' diameter of a refrigerant circulation pipe 23t installed in the indoor heat exchanger 23a.
  • the flow diameter 'd' is defined as the outermost diameter of the prescribed part of the refrigerant circulation pipe 23t that is exposed to the air flow in the indoor heat exchanger 23a. Details will be described with reference to Figures 6A and 6B.
  • the refrigerant circulation pipe 23t is surrounded by radiator fins 23f that are partially deformed due to the influence of an expansion pipe (not shown), which is provided to expand the refrigerant circulation pipes in the manufacturing process of the heat exchanger.
  • the flow diameter of the refrigerant circulation pipe 23t is measured to include the radiator fins 23f.
  • the flow diameter directly matches the outer diameter of the refrigerant circulation pipe 23t.
  • the indoor unit 20 of the second embodiment could demonstrate a noticeable reduction in noise level without extremely increasing the external dimensions thereof.
  • the prescribed measurements were performed with respect to the noise levels actually produced by the indoor unit 20.
  • the measurement results are shown in FIG. 7, which was created using the 'fixed' air blowing power for the air outlet 27 against each of 'dimensionless' values that are produced by dividing the distance L between the circumferential surface of the tangential fan 25 and its proximate indoor heat exchanger 23a by the flow diameter d of the refrigerant circulation pipe 23t.
  • the horizontal axis represents the dimensionless value 'L/d'
  • the vertical axis represents the noise level dB(A).
  • FIG. 7 shows that in the range of L/d ⁇ 2.5 (i.e., L ⁇ 2.5d), the noise level is extremely increased.
  • the noise level is controlled without problem.
  • the indoor unit 20 should be increased in size, particularly by increasing the depth dimensions thereof.
  • the present embodiment introduces the aforementioned relationship for the actualization of the noise reduction and the unwanted enlargement of the dimensions of the indoor unit 20.
  • the indoor unit 20 is not necessarily designed in consideration of the dimensional enlargement thereof, it is possible to modify the present embodiment in accordance with the relationship 2.5d ⁇ L. By merely employing this relationship, it is possible to realize the noise reduction during the operation of the air conditioner.
  • FIG. 8 shows an internal mechanical structure of an indoor unit of an air conditioner in accordance with a third embodiment of the invention, wherein parts identical to those shown in Figures 2 and 5 are designated by the same reference numerals; hence, the description thereof will be omitted.
  • the indoor unit of the third embodiment shown in FIG. 8 is partially modified in dimensions as compared with the indoor units of the foregoing first and second embodiments shown in Figures 2 and 5. That is, the outstanding technical feature of the third embodiment is to establish the following relationship between the tangential fan 25 and its proximate indoor heat exchanger 23a. 1.5L 1 ⁇ L 2 ⁇ 3.5L 1 where 'L 1 ' denotes a distance between the circumferential surface of the tangential fan 25 and its opposite surface of the indoor heat exchanger 23a, and 'L 2 ' denotes a distance between the circumferential surface of the tangential fan 25 and the boundary between the indoor heat exchangers 23a and 23b.
  • the indoor unit 20 of the third embodiment exhibited noticeable reduction in noise level without extremely increasing the external dimensions thereof.
  • prescribed measurements were performed with respect to noise levels actually produced by the indoor unit 20.
  • the measurement results are shown in FIG. 9, which was created using the 'fixed' air blowing power for the air outlet 27 against each of the 'dimensionless' values that are produced by dividing the distance L 2 between the circumferential surface of the tangential fan 25 and the edge of the indoor heat exchanger 23b by the distance L 1 between the circumferential surface of the tangential fan 2 5 and its opposite surface of the indoor heat exchanger 23a.
  • the horizontal axis represents the dimensionless value 'L 2 /L 1 '
  • the vertical axis repre sents the noise level dB(A).
  • FIG. 9 shows that in the range of L 2 /L 1 ⁇ 1.5 (i.e., L 2 ⁇ 1.5L 1 ), the noise level is extremely increased. In the range of L 2 /L 1 >3.5 (i.e., L 2 >3.5L 1 ), the noise level is controlled without problem. In order to realize the aforementioned range of L 2 >3.5L 1 , the indoor unit 20 should be increased in size, particularly by increasing the depth dimensions thereof.
  • the present embodiment introduces the aforementioned relationship for the actualization of the noise reduction and the undesirable increase in the dimensions of the indoor unit 20.
  • the indoor unit 20 is not necessarily designed in consideration of the dimensional enlargement thereof, it is possible to modify the present embodiment in accordance with the relationship of 1.5L 1 ⁇ L 2 . By merely employing this relationship, it is possible to realize the noise reduction during the operation of the air conditioner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
EP02006893A 2001-03-28 2002-03-26 Klimaanlage und Innenraumeinheit dafür Expired - Lifetime EP1245908B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2001093886A JP2002295861A (ja) 2001-03-28 2001-03-28 空気調和装置および室内ユニット
JP2001093885 2001-03-28
JP2001093886 2001-03-28
JP2001093884 2001-03-28
JP2001093884A JP2002295862A (ja) 2001-03-28 2001-03-28 空気調和装置および室内ユニット
JP2001093885A JP2002295863A (ja) 2001-03-28 2001-03-28 空気調和装置および室内ユニット

Publications (3)

Publication Number Publication Date
EP1245908A2 true EP1245908A2 (de) 2002-10-02
EP1245908A3 EP1245908A3 (de) 2004-07-07
EP1245908B1 EP1245908B1 (de) 2007-01-17

Family

ID=27346384

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02006893A Expired - Lifetime EP1245908B1 (de) 2001-03-28 2002-03-26 Klimaanlage und Innenraumeinheit dafür

Country Status (5)

Country Link
EP (1) EP1245908B1 (de)
CN (1) CN1185446C (de)
AT (1) ATE352014T1 (de)
DE (1) DE60217570D1 (de)
ES (1) ES2276867T3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150068711A1 (en) * 2013-09-11 2015-03-12 Daikin Industries, Ltd. Duct-type indoor unit of air conditioner

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103953584B (zh) * 2009-08-25 2016-08-24 三菱电机株式会社 鼓风机及具有该鼓风机的空调机
CN101703990B (zh) * 2009-09-10 2012-12-26 简甦 用于薄带状物体烘干设备的冷却装置
CN202747483U (zh) * 2012-06-13 2013-02-20 珠海格力电器股份有限公司 室内机
CN103851691A (zh) * 2012-11-28 2014-06-11 珠海格力电器股份有限公司 空调室内机
CN106051933B (zh) * 2016-08-16 2022-09-13 珠海格力电器股份有限公司 空调室内机及空调

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE963809C (de) * 1953-07-17 1957-05-16 Bruno Eck Dr Ing Querstromgeblaese
DE1277505B (de) * 1956-12-07 1968-09-12 Firth Cleveland Ltd Querstromgeblaese
US4014625A (en) * 1973-08-20 1977-03-29 Teruo Yamamoto Transverse flow fan
US4494908A (en) * 1980-04-29 1985-01-22 International Standard Electric Corporation Tangential blower

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE963809C (de) * 1953-07-17 1957-05-16 Bruno Eck Dr Ing Querstromgeblaese
DE1277505B (de) * 1956-12-07 1968-09-12 Firth Cleveland Ltd Querstromgeblaese
US4014625A (en) * 1973-08-20 1977-03-29 Teruo Yamamoto Transverse flow fan
US4494908A (en) * 1980-04-29 1985-01-22 International Standard Electric Corporation Tangential blower

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150068711A1 (en) * 2013-09-11 2015-03-12 Daikin Industries, Ltd. Duct-type indoor unit of air conditioner
US10480817B2 (en) * 2013-09-11 2019-11-19 Daikin Industries, Ltd. Duct-type indoor unit of air conditioner

Also Published As

Publication number Publication date
CN1185446C (zh) 2005-01-19
CN1378056A (zh) 2002-11-06
ES2276867T3 (es) 2007-07-01
ATE352014T1 (de) 2007-02-15
EP1245908B1 (de) 2007-01-17
EP1245908A3 (de) 2004-07-07
DE60217570D1 (de) 2007-03-08

Similar Documents

Publication Publication Date Title
JP6434152B2 (ja) 遠心送風機、空気調和装置および冷凍サイクル装置
KR101179805B1 (ko) 시로코 팬 및 공기조화 장치
KR100355827B1 (ko) 창문형 에어컨의 터보팬
JP3327082B2 (ja) 一体型空気調和機
US7206724B2 (en) Method for designing a blower wheel scroll cage
EP1245908A2 (de) Klimaanlage und Innenraumeinheit dafür
US6461103B2 (en) Siroco fan of a window type air conditioner
EP1245907B1 (de) Innenraumeinheit für eine Klimaanlage und diese Einheit beinhaltende Klimaanlage
JP4720203B2 (ja) 遠心送風機、空気調和機
JP6925571B1 (ja) 送風機、室内機および空気調和装置
CN215336772U (zh) 空调外机机壳及空调外机
JP2002357194A (ja) 貫流ファン
JP3564414B2 (ja) 室内機ユニット及び空気調和機
JP3898411B2 (ja) 貫流送風機の設計方法および空気調和機
JP3530044B2 (ja) 横流ファン及びそれを用いた流体送り装置
JP3588327B2 (ja) 窓型エアコンの送風ファンアセンブリ
JP2022029568A (ja) 空気調和機の室内機及び空気調和機用熱交換器
JP4045247B2 (ja) 一体型空気調和機
JP2019023474A (ja) 遠心送風機および空気調和装置
WO2024147172A1 (ja) 室外機
JP2002295863A (ja) 空気調和装置および室内ユニット
JP7103465B1 (ja) 送風機および室内機
WO2023157289A1 (ja) クロスフローファン
JPWO2013150673A1 (ja) 空気調和装置の室内機
WO2023152802A1 (ja) 室内機及びこれを備えた空気調和装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20020326

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RIC1 Information provided on ipc code assigned before grant

Ipc: 7F 24F 13/24 B

Ipc: 7F 24F 1/00 A

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

AKX Designation fees paid

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070117

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070117

Ref country code: CH

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070117

Ref country code: LI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070117

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070117

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070117

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SUENAGA, KIYOSHI,C/O MITSUBISHI HEAVY IND., LTD.

Inventor name: TOMINAGA, TETSUO,C/O MITSUBISHI HEAVY IND., LTD.

Inventor name: IZUMI, HAJIME,MITSUBISHI HEAVY IND., LTD.

Inventor name: SUZUKI, KAZUHIRO,C/O MITSUBISHI HEAVY IND.,LTD.

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: GB

Ref legal event code: 746

Effective date: 20070205

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60217570

Country of ref document: DE

Date of ref document: 20070308

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070417

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070618

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2276867

Country of ref document: ES

Kind code of ref document: T3

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20071018

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070331

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070326

Ref country code: DE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070418

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070117

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070418

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070907

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070326

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070117

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20171214 AND 20171222

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20190320

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20190402

Year of fee payment: 18

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20200326

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200326

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20210805

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200327