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WO2004029463A1 - Ventilateur a flux transversal et climatiseur ainsi equipe - Google Patents

Ventilateur a flux transversal et climatiseur ainsi equipe Download PDF

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Publication number
WO2004029463A1
WO2004029463A1 PCT/JP2003/012090 JP0312090W WO2004029463A1 WO 2004029463 A1 WO2004029463 A1 WO 2004029463A1 JP 0312090 W JP0312090 W JP 0312090W WO 2004029463 A1 WO2004029463 A1 WO 2004029463A1
Authority
WO
WIPO (PCT)
Prior art keywords
flow fan
blades
cross flow
pitch angles
fan
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.)
Ceased
Application number
PCT/JP2003/012090
Other languages
English (en)
Japanese (ja)
Inventor
Mitsuyoshi Ishijima
Yuuko Hongou
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.)
Carrier Japan Corp
Original Assignee
Toshiba Carrier 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 Toshiba Carrier Corp filed Critical Toshiba Carrier Corp
Priority to JP2004539480A priority Critical patent/JPWO2004029463A1/ja
Priority to AU2003266567A priority patent/AU2003266567A1/en
Publication of WO2004029463A1 publication Critical patent/WO2004029463A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to a cross flow fan used for an air conditioner or the like, and more particularly to a cross flow fan that increases air volume, reduces blower noise and motor load, and an air conditioner including the same.
  • a cross flow fan such as an indoor unit of an air conditioner is provided with a tongue in a case provided around the cross flow fan in order to prevent a backflow of air and to improve a blowing efficiency.
  • the blades since the blades generate noise when the blades pass periodically, the blade pitch is shifted from being arranged (equally distributed) at equal angles, and the blades are aperiodically shifted.
  • a random pitch wing is used to pass through.
  • This random pitch blade design method uses random numbers in manufacturing, so the blade pitch angles for each blade are all different, which makes it complicated in drafting design drawings, processing blades, and manufacturing fans.
  • it takes time to use, and the use of random number calculation is troublesome in terms of design simplicity.In evaluation, it is necessary to calculate a number of patterns and select the one that seems to be the best in trial production or simulation. This required additional time and effort.
  • Patent Document 1 Japanese Patent Application Laid-Open No. H8-74783
  • the cross flow fan described in Patent Document 1 has two pitch angles that are set so that the blade pitch angles of the blades have a predetermined deviation angle from each other.
  • each blade pitch angle has a periodic pseudo-random sequence or an array pattern including a periodic pseudo-random sequence.
  • the frequency spectrum of the blade noise which is the frequency at the evenly distributed blade pitch angle, is subjected to phase modulation by a signal close to random noise, and the spectrum is diffused, and the peak value of the spectrum is reduced. Periodic noise can be reduced.
  • a cross flow fan that can increase the air volume, reduce the ventilation noise, and reduce the motor load by increasing the outer diameter of the fan and narrowing the gap with the heat exchanger installed around the fan was requested.
  • the present invention has been made in consideration of the above-described circumstances, and without increasing the pitch noise component of the blades, it is possible to increase the outer diameter of the fan and to reduce the air flow by reducing the gap between the heat exchanger installed around the fan. It is an object of the present invention to provide a cross-flow fan capable of reducing noise, fan noise and motor load.
  • Another object of the present invention is to provide an air conditioner employing the above-described cross flow fan and capable of reducing the blowing noise and the motor load.
  • the ring While having periodicity at two pitch angles e e2, the ring is arranged in a ring on the support plate so as to form a periodic pseudo-random sequence, and the pitch angle is 0 with respect to a pitch angle of 0 when all the wings are arranged at equal intervals.
  • a cross-flow fan characterized in that the wings are arranged so as to be 6 is provided.
  • the difference (2-0) between the two different pitch angles is
  • the plurality of wings are curved outward and have an arc shape having the same shape, and have a periodicity at two different pitch angles ⁇ 2 while forming a periodic pseudo-random sequence. It is desirable that the support plate is arranged in an annular shape so as to form a ring.
  • the support plate supporting both ends of the wing is any combination of an end plate and an end plate, an end plate and a partition plate, or a partition plate and a partition plate.
  • the plurality of blades are provided on the support plate horizontally with respect to the rotation axis direction, but may be provided between the support plates so as to be inclined with respect to the rotation axis direction.
  • the above object is to provide a body having an air inlet
  • a heat exchanger provided in the main body facing the air suction port
  • a fan casing provided with a space between the heat exchanger and the heat exchanger;
  • a cross flow fan provided in the space,
  • FIG. 1 is a perspective view of one embodiment of a cross flow fan according to the present invention.
  • FIG. 2 is an enlarged perspective view showing a part II in FIG.
  • FIG. 3 is a cross-sectional view of an embodiment of the cross flow fan according to the present invention.
  • FIG. 4 is a longitudinal sectional view of an indoor unit of an air conditioner using a cross flow fan according to the present invention.
  • FIG. 5 is a perspective view of another embodiment of the cross flow fan according to the present invention.
  • FIG. 6 is a perspective view showing a VI portion of FIG. 5 in an enlarged manner.
  • FIG. 7 is a diagram showing the results of noise and electric motor load tests using the cross flow fan according to the present invention with respect to the deviation of the pitch angle from the equally-spaced angle.
  • FIG. 8 is a result diagram regarding a difference in pitch angle between a noise and a motor load test using the cross flow fan according to the present invention.
  • the cross flow fan 1 As shown in FIG. 1 to FIG. 3, the cross flow fan 1 according to the present invention, forward curved (circumferential Direction outward), a plurality of vanes 20 1 and the wing 2 92 arc shape having the same shape And the end plate 3 or the partition plate 4 to which the wings 2 ei and 2 ⁇ 2 are attached, and the plurality of wings 2 e or 2 ⁇ 2 (adjacent ones in the illustrated form) have two different pitch angles. while having periodicity in 0 There 0 2 are arranged annularly so as to form a periodic pseudo-random sequence. Further, the wings 2 ⁇ or 2 S 2 are arranged under the following conditions.
  • the difference between two different pitch angles ( ⁇ 2 — is in the range of 1 ° ⁇ (0 2 —0 J ⁇ 2.7 °).
  • the wings 2 form a periodic pseudo-random M-sequence.
  • 2 e 2 set each corner to 0 2 .
  • ⁇ is an appropriate positive value, and indicates the magnitude of deviation from equal distribution.
  • 0 and 1 of the M-series arrangement pattern that is, those of the period 7, 0, 1, 0, 1, 1, 0, 1 in accordance with setting the sequentially arranged to the wing pitch S E and 0 2 To go. If a large pitch angle 0, when 1 is set up to the pitch angle decreases, when respectively 0 2 and 0 E, in which case
  • a front suction port 13 and an upper suction port 14 are opened in the indoor unit body 12 of the indoor unit 11 of the air conditioner, and the indoor unit body 12 has A first indoor heat exchanger 15 which is curved so as to protrude forward is provided on the front side, and a second indoor heat exchanger 16 which is inclined downward is provided on the upper side. Furthermore, in the space formed by the first indoor heat exchanger 15, the second indoor heat exchanger 16 and the fan casing 17, A cross flow fan 1 according to the present invention having a structure as shown in FIG. 2 is provided.
  • the cross-flow fan 1 has a larger diameter than the conventional one, and the gap g between the cross-flow fan 1 and the first indoor heat exchanger 15 is set smaller than in the conventional case.
  • a dew receiving member 18 is provided below the first indoor heat exchanger 15, and a part thereof protrudes to form a tongue 19, and this tongue 19 and the cross flow fan A small gap is formed between them.
  • the cross-flow fan 1 has a structure in which the difference between the two pitch angles is 0.09 ⁇ 0.26. Even if the gap g with the installed heat exchanger 15 is narrowed, the specific blade pitch sound component does not increase, so the fan outer diameter dimension does not increase without increasing the blade pitch sound component. Large air volume can increase airflow noise and reduce motor load. Furthermore, by setting the difference between the two different pitch angles (0 2 -e to be in the range of 1 degree ⁇ (0 2 - ⁇ ⁇ 2.7 degrees), the effect of reducing the ventilation noise and motor load can be reduced. There is.
  • a plurality of blades are provided on the end plate or the partition plate horizontally with respect to the rotation axis direction. It is provided at an angle.
  • the cross flow fan 1 A of this embodiment has an impeller having a plurality of blades 2 Alpha theta 1 and the wing 2 Alpha theta 2, the wing 2 A el, 2 ⁇ ⁇ 2 is a periodic pseudo-random sequence having characteristics close to a random signal while having periodicity at two different pitch angles ⁇ and ⁇ 2 angles, and the end plate 3 ⁇ (partition plate 4 A) It is arranged annularly on one side. Furthermore, the wing 2 A el, 2 A e 2 are arranged inclined at a predetermined angle, one frame 5 A is formed, the frame 5 A are stacked. The other configuration is not different from the cross flow fan shown in FIG. 3, and the description is omitted.
  • deviation ⁇ pitch angle - the value of ( ⁇ 2 ⁇ 1) / ⁇ is, in 0. 0 9 ⁇ 0. 2 6, noise 4 It was 9 d ⁇ or less, and when the deviation of the pitch angle was around 0.2, it was approximately 48 dB, which proved to be suitable for practical use. On the other hand, it was found that when the pitch angle deviation was smaller than 0.09, it exceeded 49 dB, and when it exceeded 0.26, it exceeded 49 dB and increased sharply.
  • the motor load is 41.5 W or less, and when the pitch angle deviation is near 0.2, it is 41W. It turned out to be suitable for practical use.
  • the pitch angle deviation is smaller than 0.09, it exceeds 41.5 W, and the motor load increases sharply, while if the pitch angle deviation exceeds 0.26 It exceeded 41.5W and was found to increase rapidly.
  • the difference in pitch angle 1 ⁇ - In ( ⁇ 2 ⁇ ,) ⁇ 2. 7 motor load is less than 4 1. 5W, the difference is 2. 0 ° vicinity, and at 4 1W or less, practically It turned out to be suitable.
  • the difference is less than 1 °, it exceeds 41.5W and the motor load increases sharply, while if the difference exceeds 2.7 °, it exceeds 41.5W and increases sharply. I found out.
  • the fan outer diameter can be increased and the gap between the fan and the heat exchanger installed around the fan can be increased without increasing the blade pitch sound component.
  • the airflow can be increased by reducing the airflow, and the noise of the blast and the motor load can be reduced.
  • the cross flow fan according to the present invention for the indoor unit of an air conditioner, it is possible to reduce the air volume, the blowing noise and the motor load, and to reduce the size, noise and energy consumption of the air conditioner. It has great industrial applicability, such as being able to adequately meet the demands of Japan.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Cette invention concerne un ventilateur à flux transversal (1) pour climatiseur qui allège la charge imposée à un moteur et est plus silencieux. Ce ventilateur comprend une pluralité de pales (2υ1, 2υ2) et des plaques-supports (3, 4) maintenant pivotant la pluralité de pales (2υ1, 2υ2) à leurs deux extrémités et se caractérise en ce que la pluralité de pales (2υ1, 2υ2) est disposée de façon annulaire sur les plaques-supports de manière à former une série pseudo-aléatoire cyclique tout en maintenant une périodicité au niveau de deux angles de pas différents (υ1, υ2) de telle sorte que lorsqu'un déplacement Δ du rapport de la différence (υ1 - υ2) entre les deux angles de pas à un angle de pas υ, lorsque toutes les pales sont disposés à intervalles égaux, est Δ = (υ1 - υ2) / υ, ce déplacement Δ est 0,09 ≤ Δ ≤ 0,26.
PCT/JP2003/012090 2002-09-24 2003-09-22 Ventilateur a flux transversal et climatiseur ainsi equipe Ceased WO2004029463A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2004539480A JPWO2004029463A1 (ja) 2002-09-24 2003-09-22 横流ファンおよびそれを備えた空気調和機
AU2003266567A AU2003266567A1 (en) 2002-09-24 2003-09-22 Cross flow fan and air conditioner with the fan

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002-277366 2002-09-24
JP2002277366 2002-09-24

Publications (1)

Publication Number Publication Date
WO2004029463A1 true WO2004029463A1 (fr) 2004-04-08

Family

ID=32040405

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2003/012090 Ceased WO2004029463A1 (fr) 2002-09-24 2003-09-22 Ventilateur a flux transversal et climatiseur ainsi equipe

Country Status (4)

Country Link
JP (1) JPWO2004029463A1 (fr)
CN (1) CN100552230C (fr)
AU (1) AU2003266567A1 (fr)
WO (1) WO2004029463A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009162086A (ja) * 2007-12-28 2009-07-23 Toshiba Carrier Corp 多翼回転体及び空気調和機の室内機
WO2011030749A1 (fr) * 2009-09-11 2011-03-17 シャープ株式会社 Ventilateur tangentiel, filière de moulage et dispositif d'apport de fluide
EP1780475A3 (fr) * 2005-10-28 2013-01-16 Mitsubishi Electric Corporation Ventilateur à courant transversal
JP2015010730A (ja) * 2013-06-27 2015-01-19 パナソニック株式会社 空気調和機
JP2020023972A (ja) * 2017-09-27 2020-02-13 ダイキン工業株式会社 空気調和機
US11384765B2 (en) 2017-09-27 2022-07-12 Daikin Industries, Ltd. Air conditioner
JP2022136087A (ja) * 2019-10-30 2022-09-15 ダイキン工業株式会社 空気調和機

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2549117B1 (fr) * 2010-03-15 2018-12-12 Sharp Kabushiki Kaisha Ventilateur et dispositif de débit de fluide
JP6601994B2 (ja) * 2013-09-06 2019-11-06 日立ジョンソンコントロールズ空調株式会社 空気調和機の室内機及びこれを用いた空気調和機
CN105756993A (zh) * 2016-04-13 2016-07-13 海信（山东）空调有限公司 一种不等距离心风扇及除湿机
CN110067773B (zh) * 2018-01-23 2024-07-30 青岛海尔智慧厨房电器有限公司 一种叶轮、风机及吸油烟机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4992507U (fr) * 1972-11-30 1974-08-10
US4538963A (en) * 1983-07-08 1985-09-03 Matsushita Electric Industrial Co., Ltd. Impeller for cross-flow fan
US4923365A (en) * 1987-03-14 1990-05-08 Robert Bosch Gmbh Impeller wheel for conveying a medium
JPH0874783A (ja) * 1994-09-06 1996-03-19 Toshiba Corp 多翼回転体
JPH08200283A (ja) * 1995-01-30 1996-08-06 Hitachi Ltd 貫流ファンおよびこれを備えた空気調和機
EP0785362A1 (fr) * 1996-01-18 1997-07-23 Mitsubishi Denki Kabushiki Kaisha Roue pour une soufflante à courant traversal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3107711B2 (ja) * 1994-08-09 2000-11-13 株式会社東芝 横流ファン
CN2295861Y (zh) * 1996-12-02 1998-10-28 青岛海尔空调器有限总公司 斜片式不等距贯流风扇
US6158954A (en) * 1998-03-30 2000-12-12 Sanyo Electric Co., Ltd. Cross-flow fan and an air-conditioner using it

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4992507U (fr) * 1972-11-30 1974-08-10
US4538963A (en) * 1983-07-08 1985-09-03 Matsushita Electric Industrial Co., Ltd. Impeller for cross-flow fan
US4923365A (en) * 1987-03-14 1990-05-08 Robert Bosch Gmbh Impeller wheel for conveying a medium
JPH0874783A (ja) * 1994-09-06 1996-03-19 Toshiba Corp 多翼回転体
JPH08200283A (ja) * 1995-01-30 1996-08-06 Hitachi Ltd 貫流ファンおよびこれを備えた空気調和機
EP0785362A1 (fr) * 1996-01-18 1997-07-23 Mitsubishi Denki Kabushiki Kaisha Roue pour une soufflante à courant traversal

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1780475A3 (fr) * 2005-10-28 2013-01-16 Mitsubishi Electric Corporation Ventilateur à courant transversal
JP2009162086A (ja) * 2007-12-28 2009-07-23 Toshiba Carrier Corp 多翼回転体及び空気調和機の室内機
WO2011030749A1 (fr) * 2009-09-11 2011-03-17 シャープ株式会社 Ventilateur tangentiel, filière de moulage et dispositif d'apport de fluide
JP2011058450A (ja) * 2009-09-11 2011-03-24 Sharp Corp 貫流ファン、成型用金型および流体送り装置
CN102483068A (zh) * 2009-09-11 2012-05-30 夏普株式会社 贯流风扇、成型用模具和流体输送装置
US9347461B2 (en) 2009-09-11 2016-05-24 Sharp Kabushiki Kaisha Cross-flow fan, molding die, and fluid feeder
EP2476908A4 (fr) * 2009-09-11 2017-05-24 Sharp Kabushiki Kaisha Ventilateur tangentiel, filière de moulage et dispositif d'apport de fluide
JP2015010730A (ja) * 2013-06-27 2015-01-19 パナソニック株式会社 空気調和機
JP2020023972A (ja) * 2017-09-27 2020-02-13 ダイキン工業株式会社 空気調和機
US11384765B2 (en) 2017-09-27 2022-07-12 Daikin Industries, Ltd. Air conditioner
JP2022136087A (ja) * 2019-10-30 2022-09-15 ダイキン工業株式会社 空気調和機

Also Published As

Publication number Publication date
CN100552230C (zh) 2009-10-21
AU2003266567A1 (en) 2004-04-19
CN1685159A (zh) 2005-10-19
JPWO2004029463A1 (ja) 2006-01-26

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