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WO2004088210A1 - Unite d'exterieur pour climatiseur - Google Patents

Unite d'exterieur pour climatiseur Download PDF

Info

Publication number
WO2004088210A1
WO2004088210A1 PCT/JP2004/004426 JP2004004426W WO2004088210A1 WO 2004088210 A1 WO2004088210 A1 WO 2004088210A1 JP 2004004426 W JP2004004426 W JP 2004004426W WO 2004088210 A1 WO2004088210 A1 WO 2004088210A1
Authority
WO
WIPO (PCT)
Prior art keywords
bell mouth
axial
outdoor unit
trailing edge
air conditioner
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/JP2004/004426
Other languages
English (en)
Japanese (ja)
Inventor
Mitsuyoshi Ishijima
Akihiro Takeuchi
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 EP04724144A priority Critical patent/EP1610068B1/fr
Publication of WO2004088210A1 publication Critical patent/WO2004088210A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/40—Vibration or noise prevention at outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/002—Axial flow 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • 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
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form
    • 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
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/38—Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings

Definitions

  • the present invention relates to an outdoor unit of an air conditioner, and more particularly to an outdoor unit provided with an axial blower capable of suppressing an increase in blowing noise.
  • an outdoor unit of an air conditioner is provided with a bell mouth at an outlet, and a plurality of wings arranged at a predetermined interval along an outer peripheral surface of a rotary fan in an air inflow direction of the bell mouse.
  • An axial blower having an axial fan provided therein is arranged.
  • the generation of vortices generated in the wake of the trailing edge of the blade can be reduced as compared with the case where the trailing edge of the blade is formed in a straight line, thus reducing the blowing noise and the motor load. The effect of is obtained.
  • the present invention has been made in consideration of the above circumstances, and its purpose is to optimize the axial positional relationship between the trailing edge of the wing and the bellmouth to achieve rectification of the trailing edge of the wing, It is an object of the present invention to provide an outdoor unit of an air conditioner equipped with an axial blower capable of suppressing an increase in blowing noise. Disclosure of the invention
  • the wing having the contour of the wing trailing edge in the rotating direction formed in a concave shape in the wing leading edge direction is provided by a hub.
  • the distance (XZL) when the distance between the most concave portion inside the rotation direction of the line and the air outflow surface of the bell mouth and the length in the axial direction of the bell mouth are (XZL) is 0.2 to 0.2.
  • the bell mouth and the axial fan are arranged so as to fall within a range of 0.8.
  • An outdoor unit of an air conditioner comprising: an axial fan that is provided; and a bell mouth that is disposed on an air blowing side of the axial fan, wherein a contour in a circumferential direction of the wing and a contour in a trailing edge of the wing.
  • the distance (YZL) when the distance between the point where the line intersects and the air outlet surface of the bell mouth is Y and the length of the bell mouth in the axial direction is L is 0.3 to 0.9.
  • the present invention is also achieved by providing an outdoor unit of an air conditioner characterized by arranging the bell mouth and the axial flow fan in such a manner as to satisfy the following range.
  • the concave shape of the contour line of the trailing edge of the blade is an arc shape.
  • the concave shape of the contour line of the wing trailing edge may be V-shaped or trapezoidal.
  • an object of the present invention is to provide a wing in which the contour of the wing trailing edge in the rotational direction is formed in a concave shape in the wing leading edge direction, at a predetermined interval along the outer peripheral surface of the wing.
  • An outdoor unit for an air conditioner comprising: an axial fan formed by arranging a plurality of airflow fans; and a bell mouth disposed on an air blowing side by the axial fan, wherein the contour line of the blade trailing edge is rotated.
  • the distance (XZL) is 0.2 to 0.8, where L is the distance between the air outlet surface of the bell mouth and the most concave part in the direction, and L is the axial length of the bell mouth.
  • the distance between the intersection of the circumferential contour of the wing and the contour of the trailing edge of the wing and the air outflow surface of the bellmouth is defined as Y,
  • the bell mouth is arranged so that the ratio (Y / L) when the length of the bell mouth in the axial direction is L is in the range of 0.3 to 0.9.
  • FIG. 1 is a schematic sectional view of an outdoor unit of an air conditioner according to the present invention.
  • FIG. 2 is a plan view showing the entire configuration of the axial flow fan according to the present invention when viewed from the pressure side of the blade.
  • FIG. 3 is an enlarged view of one blade of the axial flow fan as the first embodiment of the present invention shown in FIG.
  • FIG. 4 is a diagram showing a positional relationship between the axial fan and the bell mouth in the first embodiment.
  • FIG. 5 is a diagram showing the relationship between the ratio (XZL) and the blowing noise in the first embodiment (the most concave point of the contour of the trailing edge of the blade of the axial flow fan and the air outflow surface of the bell mouth). Is defined as X, and the length of Bellmouth in the axial direction is defined as L).
  • FIG. 6 is an enlarged view of one of the blades of an axial fan according to a modification of the first embodiment.
  • FIG. 7 is an enlarged view of one of the blades of an axial fan according to another modification of the first embodiment.
  • FIG. 8 is a diagram showing the relationship between the ratio (YZL) and the blowing noise according to the second embodiment of the present invention (the circumferential contour of the blade of the axial flow fan and the contour of the trailing edge of the blade).
  • the distance between the intersection of the line and the air outlet surface of Bellmouth is Y, and the axial length of Bellmouth is L.
  • FIG. 1 is a sectional view of an outdoor unit (unit) 1 of an air conditioner.
  • the outdoor unit 1 is used by being connected to an indoor unit (unit) (not shown), and a bottom plate 2 disposed on the outdoor floor surface, a component described later disposed on the bottom plate 2, an outlet 4, It has a fan guard 5 that covers the outlet 4, And a main body cover 3 provided to cover the main body 2.
  • the outdoor unit 1 has therein a compressor 6 that circulates a refrigerant through a refrigeration cycle and an outdoor heat exchanger in which plate-shaped radiating fins are stacked at predetermined intervals in a heat transfer tube through which the refrigerant flows.
  • 7 has a refrigeration cycle component, a blower 8 for sending outdoor air to the outdoor heat exchanger 7, and a bell mouth 9 provided at the outlet 4.
  • the blower 8 includes an axial fan 10 and a fan motor 11, and is provided between the outdoor heat exchanger 7 and the bell mouth 9 in the axial direction.
  • the fan motor 11 is attached to a motor fixing plate 11 a provided on the bottom plate 2 with a fixing tool such as a screw.
  • the above components are arranged in order from the upstream side of the air flow generated by the axial fan 10, in the order of the outdoor heat exchanger 7, the fan motor 11, the axial fan 10, and the bell mouth 9. Are arranged side by side in the axial direction.
  • FIG. 2 is a plan view showing the overall configuration of the axial flow fan 10 of the present invention when viewed from the pressure side of the blade 10b.
  • FIG. 3 is a plan view showing one blade 10b of FIG. FIG.
  • the axial flow fan 10 according to the first embodiment of the present invention shown in FIGS. 2 and 3 has a plurality of blades 10b equally divided in the circumferential direction on a side surface of an outer peripheral surface of a cylindrical bush 10a. It is not integrated at the position or is integrally attached, and is integrally molded by, for example, resin molding.
  • the rotation shaft of the fan motor 11 is inserted and fixed at the center of the hub 10a, and the axial fan 10 is rotated in the direction of arrow M by the fan motor 11.
  • the portion of the wing 10b connected to the hap 10a is integrally formed as a root portion 20, and the rotation direction (M) is on the front side of the wing front edge 21 and on the rear side in the rotation direction.
  • the wing trailing edge 22 and the wing leading edge 22 and the wing trailing edge 22 are formed as a wing outer peripheral portion 23, respectively.
  • the leading edge 21 of the wing is the direction of air introduction, and the trailing edge 22 of the wing is air.
  • Outflow direction (Fig. 3).
  • the leading edge 21 of the blade protrudes greatly in the rotational direction from the root portion 20 toward the outer peripheral portion 23 of the blade, and the contour of the trailing edge 22 of the blade is opposite to the air outflow direction. It is formed as an arc-shaped recess that is recessed in the introduction direction.
  • a corner portion which is a continuous portion (intersection) between the wing rear portion 22 and the outer peripheral portion 23 is It is formed as a convex bulging portion 24 bulging in the air outflow direction.
  • FIG. 4 is a view showing a positional relationship between the axial fan 10 and the bell mouth 9 in the first embodiment, and the bell mouth 9 is provided around the outlet 4 of the cover 13 of the main body. In the axial direction of the axial fan 10, it faces the trailing edge 22 of the blade.
  • the wing trailing edge 22 of the wing 10b is arranged so that its G point and Q point completely wrap (enter the bell mouth) with the bell mouth 9 in the axial direction.
  • FIG. 5 shows that the distance between the point G of the wing trailing edge 22 of wing 10b in FIG.
  • FIG. 3 is a diagram showing a relationship between a ratio (X / L) when the length in the axial direction is L and blast noise.
  • the length X from the point G of the trailing edge 22 of the wing to the bellmouth air outflow surface 9 b is approximately 20% of the axial length L of the bellmouth 9 to 80%. % (0.2 L to 0.8 L), the ventilation noise is reduced by placing the axial fan 10 and bell mouth 9, especially at around 50%. Therefore, it has been experimentally found that setting X in the above range is effective for reducing blast noise.
  • the experiment for this was carried out based on the JIS standard (Z8731) by installing the outdoor unit in an anechoic room and installing a microphone connected to the sound level meter at a position lm from the front of the outdoor unit.
  • the blast noise through the microphone was displayed on the sound level meter as sound pressure level (dB).
  • the parts of the first modification shown in FIG. 6 are different from the shape of the wing trailing edge part 22 in the first embodiment of FIG. 3, but the same parts as the other parts are indicated by the same reference numerals, and The description is omitted.
  • the contour of the rear edge 22 of the axial fan used in the first embodiment is formed as an axial fan formed in a substantially V-shaped concave portion.
  • the axial flow fan 10 has an airflow It is formed as a substantially V-shaped recess recessed in the introduction direction opposite to the exit direction.
  • the V-shaped vertex Z corresponds to the point G of the arc-shaped concave portion in the first embodiment
  • the point Q at which the V-shaped trailing edge portion 22 and the blade outer peripheral portion 23 intersect with each other. 1 corresponds to the point Q in the first embodiment.
  • each part of the second modified example is different from the shape of the wing trailing edge portion 22 of the first embodiment in FIG. 3, the same parts as those of the other parts are denoted by the same reference numerals, and description thereof will be omitted.
  • the contour of the trailing edge portion 22 of the blade of the axial flow fan used in the first embodiment is formed as an axial flow fan formed as a trapezoidal concave portion.
  • the axial flow fan 10 is formed such that the contour of the trailing edge 22 of the blade is a trapezoidal concave portion that is concave in the direction of introduction opposite to the direction of air flow.
  • the trapezoidal side U corresponds to the point G in the first embodiment
  • the point Q2 where the trailing edge 22 of the trapezoid intersects with the blade outer periphery 23 is the point Q2 in the first embodiment.
  • FIG. 8 relates to the second embodiment, and designates a point where a blade outer peripheral portion 23 of the blade 10b intersects with the trailing edge 22 of the blade, as a point Q.
  • FIG. 7 is a diagram showing a relationship between a ratio (YZL) when a distance from the outflow surface 9 b to Y and an axial length of the bellmouth 9 to L (blast noise).
  • the length Y from the point Q of the wing trailing edge 22 to the bellmouth air outflow surface 9 b is about 30% to 90% of the axial length L of the bellmouth 9. % (0.3 L to 0.9 L), the ventilation noise is reduced by arranging the axial fan 10 and bell mouth 9, especially at around 60%. And within the above range Experimentally, it has been found that setting Y is effective in reducing blast noise. This experiment was also performed under the same conditions as those performed in the first example. As a result, it is possible to suppress the vortex generated when the air flowing out of the bulging portion 24 collides with the fan guard 5 on the downstream side of the axial fan 10, and the blowing noise caused by the vortex is reduced. Can be reduced.
  • the outdoor unit of the air conditioner satisfies the requirements of the air flow rate and the requirement of the reduction of the motor load, and generates the vortex generated at the trailing edge of the blade of the axial flow fan. It is possible to provide an outdoor unit of an air conditioner that is provided with an axial blower capable of suppressing and reducing the blowing noise.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

La présente invention concerne une unité d'extérieur pour climatiseur, qui comporte un ventilateur à écoulement axial et un pavillon d'entrée. Le ventilateur à écoulement axial est composé d'un agencement de pales disposées à intervalles préétablis le long du pourtour extérieur d'un moyeu, chacune desdites pales étant formée de sorte que le contour de son bord arrière par rapport au sens de rotation présente un retrait en direction de son bord avant. Le pavillon d'entrée est situé du côté de l'air soufflé par le ventilateur à écoulement axial. Une soufflante à écoulement axial est disposée dans l'unité d'extérieur. Le pavillon d'entrée et le ventilateur à écoulement axial sont disposés dans la soufflante à écoulement axial de sorte que le rapport X/L soit compris entre 0,2 et 0,8, X étant la distance entre la partie du contour du bord arrière des pales qui est le plus profondément en retrait vers l'intérieur dans le sens de rotation et une surface de flux d'air sortant du pavillon d'entrée, L étant la longueur axiale dudit pavillon d'entrée.
PCT/JP2004/004426 2003-03-31 2004-03-29 Unite d'exterieur pour climatiseur Ceased WO2004088210A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04724144A EP1610068B1 (fr) 2003-03-31 2004-03-29 Unite d'exterieur pour climatiseur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003-096748 2003-03-31
JP2003096748A JP2004301451A (ja) 2003-03-31 2003-03-31 空気調和装置の室外機

Publications (1)

Publication Number Publication Date
WO2004088210A1 true WO2004088210A1 (fr) 2004-10-14

Family

ID=33127524

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2004/004426 Ceased WO2004088210A1 (fr) 2003-03-31 2004-03-29 Unite d'exterieur pour climatiseur

Country Status (6)

Country Link
EP (1) EP1610068B1 (fr)
JP (1) JP2004301451A (fr)
KR (1) KR100724824B1 (fr)
CN (2) CN100343590C (fr)
ES (1) ES2332591T3 (fr)
WO (1) WO2004088210A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140000852A1 (en) * 2012-06-28 2014-01-02 Samsung Electronics Co., Ltd. Indoor unit of air conditioner and method of controlling the air conditioner

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4689262B2 (ja) * 2004-12-21 2011-05-25 東芝キヤリア株式会社 軸流ファン、空気調和機の室外機
KR100749656B1 (ko) 2006-12-15 2007-08-14 주식회사 케이티 저소음형 실외기
KR101546905B1 (ko) * 2008-01-30 2015-08-24 엘지전자 주식회사 공기조화기용 실외기
CN101925783B (zh) * 2008-03-11 2013-07-17 三菱电机株式会社 空气调节机
KR20130109515A (ko) * 2012-03-27 2013-10-08 삼성전자주식회사 공조기기의의 실외기의 축류팬
CN102720700B (zh) * 2012-06-21 2015-11-25 海尔集团公司 轴流风扇的叶片及空调用轴流风扇
JP6170783B2 (ja) * 2012-09-19 2017-07-26 東芝キヤリア株式会社 プロペラファンおよび空気調和機の室外ユニット
EP2960525B1 (fr) * 2013-02-22 2022-10-19 Hitachi-Johnson Controls Air Conditioning, Inc. Ventilateur à hélice et climatiseur le comportant
KR101734722B1 (ko) * 2015-12-14 2017-05-11 엘지전자 주식회사 공기 조화기의 오리피스
CN106903875A (zh) * 2017-03-16 2017-06-30 青岛科技大学 一种3d打印用小型螺杆塑化装置
JP7173939B2 (ja) * 2019-08-26 2022-11-16 ダイキン工業株式会社 送風装置及びヒートポンプユニット

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05231678A (ja) * 1992-02-21 1993-09-07 Daikin Ind Ltd 空気調和機
JPH06137608A (ja) * 1992-10-28 1994-05-20 Toshiba Ave Corp 空気調和機用室外ユニット

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2266106T3 (es) * 2000-12-28 2007-03-01 Daikin Industries, Ltd. Un dispositivo ventilador y una unidad exterior para acondicionador de aire.
JP4140236B2 (ja) * 2000-12-28 2008-08-27 ダイキン工業株式会社 送風装置および空気調和機用室外機
JP2002257088A (ja) * 2001-03-06 2002-09-11 Toshiba Kyaria Kk 軸流ファン
TW524928B (en) * 2001-04-26 2003-03-21 Daikin Ind Ltd Blower and air conditioner with the same
JP2003013892A (ja) * 2001-04-26 2003-01-15 Daikin Ind Ltd 送風機及び該送風機を備えた空気調和機

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05231678A (ja) * 1992-02-21 1993-09-07 Daikin Ind Ltd 空気調和機
JPH06137608A (ja) * 1992-10-28 1994-05-20 Toshiba Ave Corp 空気調和機用室外ユニット

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1610068A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140000852A1 (en) * 2012-06-28 2014-01-02 Samsung Electronics Co., Ltd. Indoor unit of air conditioner and method of controlling the air conditioner
US9551498B2 (en) * 2012-06-28 2017-01-24 Samsung Electronics Co., Ltd. Indoor unit of air conditioner and method of controlling the air conditioner

Also Published As

Publication number Publication date
EP1610068A4 (fr) 2007-11-21
CN101025281A (zh) 2007-08-29
CN1768237A (zh) 2006-05-03
EP1610068A1 (fr) 2005-12-28
CN100480591C (zh) 2009-04-22
JP2004301451A (ja) 2004-10-28
KR20050120678A (ko) 2005-12-22
KR100724824B1 (ko) 2007-06-04
CN100343590C (zh) 2007-10-17
EP1610068B1 (fr) 2009-09-16
ES2332591T3 (es) 2010-02-09

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