WO2013008472A1 - 軸流送風機および空気調和機の室外機 - Google Patents

軸流送風機および空気調和機の室外機 Download PDF

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Publication number
WO2013008472A1
WO2013008472A1 PCT/JP2012/004519 JP2012004519W WO2013008472A1 WO 2013008472 A1 WO2013008472 A1 WO 2013008472A1 JP 2012004519 W JP2012004519 W JP 2012004519W WO 2013008472 A1 WO2013008472 A1 WO 2013008472A1
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WO
WIPO (PCT)
Prior art keywords
suction
axial
orifice ring
ring
axial blower
Prior art date
Application number
PCT/JP2012/004519
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English (en)
French (fr)
Japanese (ja)
Inventor
欣公 田積
酒井　浩一
木田　琢己
Original Assignee
パナソニック株式会社
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 パナソニック株式会社 filed Critical パナソニック株式会社
Priority to CN201280030470.1A priority Critical patent/CN103649549B/zh
Priority to JP2013523838A priority patent/JP6153029B2/ja
Publication of WO2013008472A1 publication Critical patent/WO2013008472A1/ja

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    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps

Definitions

  • the present invention relates to an axial blower, and more particularly to an axial blower used for a blower of an outdoor unit of an air conditioner.
  • this type of axial blower has various uses, and is used for an outdoor unit of an air conditioner as disclosed in Patent Document 1, for example.
  • the conventional axial blower used for the outdoor unit of an air conditioner will be described with reference to FIGS. 7 is a cross-sectional view of a conventional outdoor unit when viewed from above, and FIG. 8 is an enlarged cross-sectional view of an axial-flow fan used in the conventional outdoor unit.
  • a conventional outdoor unit 50 includes a casing 51 having an outside air suction port 51a and a blowout port 51b, an axial blower 52 disposed in the vicinity of the blowout port 51b in the casing 51, and a casing. And a heat exchanger 56 disposed in the suction port 51a. Further, a compressor chamber 57 in which a compressor is disposed is provided on the right side of the casing 51 of the outdoor unit 50 in the figure.
  • the axial blower 52 includes a plurality of blades 54 attached to the rotation shaft 53 and a motor 55 that rotates and drives each blade 54 via the rotation shaft 53.
  • a substantially cylindrical orifice ring 58 is provided in the casing 51 so as to surround each blade 54 of the axial blower 52. As shown in FIG. 8, the orifice ring 58 surrounding each blade 54 is formed at a certain height (length in the direction along the rotation axis 53) H3.
  • the blowing side of the axial blower 52 is the front (lower side of FIG. 7), the suction side opposite to this is the back (upper side of FIG. 7), and the left side of FIG.
  • the left side and the right side are the right side.
  • the air flow (airflow) formed by the rotational drive of each blade 54 can be directed to the blowing side by the orifice ring 58.
  • the effect of the ventilation performance improvement and noise reduction of an axial-flow fan can be acquired.
  • This invention solves the above-mentioned subject, and is applied to the suction passage of the ventilation structure in which a non-axisymmetric flow is formed on the suction side, and provides an axial blower capable of realizing appropriate air blowing performance. Objective.
  • the present invention is configured as follows.
  • the passage includes a plurality of blades arranged around the rotation axis and an orifice ring arranged to surround the plurality of blades, and a non-axisymmetric flow is formed on the suction side.
  • an axial blower applied to a suction passage of a structure, wherein the height of the orifice ring at different positions around the rotation shaft is different according to the magnitude of each suction ventilation resistance. .
  • an axial blower that can be applied to a suction passage having a ventilation structure in which a non-axisymmetric flow is formed on the suction side, and can realize an appropriate blowing performance.
  • Sectional drawing when viewed from above the outdoor unit Detailed sectional view of the axial blower and orifice of FIG.
  • A is sectional drawing seen from the upper direction of an outdoor unit
  • B is the figure which looked at the outdoor unit from the front side, and is a figure which shows the relationship between an axial blower and an orifice ring Diagram showing qualitative draft resistance
  • An axial blower includes a plurality of blades arranged around a rotation axis, and an orifice ring arranged to surround the plurality of blades, and a passage in which a non-axisymmetric flow is formed on the suction side
  • the axial blower is applied to a suction passage having a structure, and the height of the orifice ring at different positions around the rotation shaft is configured to be different according to the magnitude of each suction ventilation resistance.
  • the magnitude of the suction side ventilation resistance in the rotation direction around the rotation axis associated with the ventilation structure in which a non-axisymmetric flow is formed is set to the height of the orifice ring at each position around the rotation axis. It can be adjusted by varying the thickness. Therefore, it is possible to provide an axial flow blower that can be applied to a suction passage having a ventilation structure in which a non-axisymmetric flow is formed on the suction side and can realize an appropriate blowing performance.
  • a height of the orifice ring in a portion where the suction ventilation resistance is large is a height of the orifice ring in a portion where the suction ventilation resistance is small. It is set to be larger than this.
  • a third aspect of the present invention is the axial blower of the first or second aspect, wherein the orifice ring has a suction side ring portion that expands toward the suction side and a blowout side ring portion that expands toward the blowout side. And a straight cylindrical intermediate ring portion that connects the suction side and the blowout side ring portion, and the height of the intermediate ring portion is made different according to the size of each suction ventilation resistance. Yes.
  • the height of the suction ring part and the blow ring part that contribute to noise reduction is kept constant, and the height of the intermediate ring part is adjusted according to the level of ventilation resistance. Can do. Therefore, the noise reduction effect can be enhanced while making the blowing performance of the axial flow fan appropriate.
  • the suction side ring portion has a substantially arc-shaped cross section having a constant curvature and a diameter increasing toward the suction side, and the blowout side ring portion is In addition, the diameter is increased toward the blowing side, and a substantially arc-shaped cross section having a certain curvature is provided.
  • the noise reduction effect can be enhanced while making the air blowing performance of the axial blower appropriate.
  • An outdoor unit of an air conditioner includes the axial fan, the compressor, the heat exchanger, and the casing that houses the axial fan according to the first to fourth aspects, and the casing.
  • a suction passage having a passage structure in which a non-axisymmetric flow is formed on the suction side of the axial blower Is a suction passage having a passage structure in which a non-axisymmetric flow is formed on the suction side of the axial blower.
  • FIG. 1 is a cross-sectional view of an outdoor unit of an air conditioner according to an embodiment of the present invention as viewed from above, and FIG. 2 is a detailed cross-sectional view of an axial blower used in the outdoor unit.
  • an outdoor unit 10 of an air conditioner includes a casing 1 having an outside air suction port 1 a and a blowout port 1 b, and an axial flow fan 2 disposed in the vicinity of the blowout port 1 b in the casing 1. And a heat exchanger 6 disposed in the suction port 1a in the casing 1. Furthermore, a compressor chamber 7 in which a compressor is arranged is provided on the right side of the casing 1 of the outdoor unit 10 in the figure.
  • the axial blower 2 includes a plurality of blades 4 (or impellers) attached to the rotary shaft 3 and a motor 5 that rotationally drives each blade 4 via the rotary shaft 3.
  • a substantially cylindrical orifice ring 8 is provided so as to surround each blade 4 of the axial blower 2.
  • the blowing side of the axial flow fan 2 is the front (lower side of FIG. 1), the suction side opposite to this is the rear side (upper side of FIG. 1), and the left side of FIG.
  • the left side and the right side are the right side.
  • the orifice rings 8 surrounding each blade 4 of the axial blower 2 have different heights at different positions around the rotation axis 3 (rotation direction or circumferential direction) ( H1 and H2 are different from the conventional orifice ring 58.
  • each of the rotation shafts 3 around the rotation shaft 3 according to the magnitude of the suction side ventilation resistance in the rotation direction around the rotation shaft 3 associated with the ventilation structure in which a non-axisymmetric flow is formed.
  • the height of the orifice ring 8 at the position is varied. Specifically, in the orifice ring 8, the height of the orifice ring 8 is such that the height of the orifice ring 8 at the portion where the suction ventilation resistance is large is larger than the height of the orifice ring 8 at the portion where the suction ventilation resistance is small. Is set. In the example shown in FIG. 2, the height H2 of the right-side orifice ring 8 is set larger than the height H1 of the left-side orifice ring 8.
  • FIGS. 3 and 4 are cross-sectional views of the outdoor unit 10 as viewed from above, and FIG. 3B is a diagram of the outdoor unit 10 as viewed from the front side.
  • the axial blower 2 and the orifice ring 8 are It is a figure which shows a relationship.
  • FIG. 4 is a diagram showing the relationship between the position in the rotation direction (circumferential direction) of the orifice ring 8 and the suction side ventilation resistance.
  • the compressor chamber 7 is arranged on the right side in the casing 1, so that the airflow on the suction side formed by the axial blower 2 is rotated on the rotating shaft. 3 is a non-axisymmetric flow. Therefore, the suction side ventilation resistance is different between the suction space on the left side and the suction space on the right side with respect to the rotating shaft 3 of the axial blower 2.
  • the suction port 51a and the heat exchanger 6 are arranged on the left side and the back side, whereas the compressor chamber 7 is arranged on the right side. .
  • the ventilation resistance in the suction space on the right side is larger than the ventilation resistance in the suction space on the left side of the axial blower 2.
  • a space on the suction side of the axial blower 2 and excluding the compressor chamber 7 is a suction side passage.
  • the position A on the right side surface in the vicinity of the inner peripheral surface of the orifice ring 8 is set as a base point (angle ⁇ is 0 (deg)), and the counterclockwise angle ⁇ is 90 (
  • the position of deg) is B
  • the position of angle ⁇ is 180 (deg) is C
  • the position of angle ⁇ is ⁇ 90 (deg) is D (that is, angle ⁇ is 270 (deg)).
  • the relationship between the respective positions around the rotation axis 3 in the vicinity of the inner peripheral surface of the orifice ring 8 and the suction side ventilation resistance is expressed as shown in FIG.
  • the suction side ventilation resistance RC is the minimum value.
  • Qualitative ventilation is obtained by measuring the static pressure at the measurement point S in the vicinity of the inner peripheral surface of the orifice ring 8 shown in FIG. 3 (B) and estimating the ventilation resistance according to the measured static pressure. The resistance is shown in FIG.
  • the height of the orifice ring 8 is set to be large and the ventilation resistance is low at a position where the ventilation resistance is large according to the magnitude of the ventilation resistance depending on the position around the rotating shaft 3.
  • the height of the orifice ring 8 is set small. Specifically, as shown in FIG. 2, the orifice ring 8 at the position A at which the ventilation resistance RA is the maximum value is higher than the height H1 of the orifice ring 8 at the position C at which the ventilation resistance RC is the minimum value.
  • the height H2 is set large (that is, H1 ⁇ H2).
  • the relationship between the height H (H1, H2, etc.) of the orifice ring 8 and the air blowing characteristics of the axial blower 2 will be described.
  • the air blowing characteristics of the axial blower 2 the characteristics of P (static pressure) -Q (air flow) and the air flow resistance characteristics at the positions A and C (relationship between the air flow resistance of the suction side passage and the air flow) are shown in FIG. Shown in In the graph of FIG. 5, the vertical axis represents static pressure (or ventilation resistance) P, and the horizontal axis represents air volume Q.
  • the PQ characteristic when the height of the orifice ring is H1 (H1 ⁇ H2) in the axial blower 2 is indicated by a dotted line (PQ characteristic H1).
  • the intersection of the ventilation resistance characteristic curve at the position A and the ventilation resistance characteristic curve at the position C and the PQ characteristic H1, that is, the operating points X1 and X2 are characteristics exhibited by the axial blower 2. Specifically, when the height of the orifice ring is H1, the air volume Q1 is obtained at the position A (operating point X1), and the air volume Q2 is obtained at the position C (operating point X2).
  • the PQ characteristic when the height of the orifice ring is H2 (H1 ⁇ H2) in the axial blower 2 is indicated by a solid line (PQ characteristic H2).
  • the intersection of the ventilation resistance characteristic curve at the position A and the PQ characteristic H2, that is, the operating point X3 is a characteristic exhibited by the axial flow fan 2.
  • the air volume Q3 Q1 ⁇ Q3 ⁇ Q2 is obtained at the position A (operating point X3).
  • the difference in the air volume between the position A and the position C is small.
  • the air volume can be increased from Q1 to Q3, and the difference between the air volume Q3 at the position A and the air volume Q2 at the position C can be reduced.
  • the position A and the position C in the orifice ring 8 are taken as an example, but the same idea can be applied to other positions. That is, by adjusting the height of the orifice ring 8 according to the magnitude of the ventilation resistance at each position, it is possible to reduce the air volume difference between the positions.
  • the height of the orifice ring 8 is continuously changed according to the magnitude of the suction side ventilation resistance at the position around the rotation shaft 3 of the axial blower 2, thereby changing the position ( By bringing the air volume in A to D) close to a predetermined air volume, the air blowing performance can be optimized.
  • the orifice ring 8 includes a suction side ring portion 11 that increases in diameter toward the suction side (an opening diameter increases), a blowout side ring portion 12 that increases in diameter toward the blowout side, and a suction It is constituted by a straight cylindrical intermediate ring portion 13 that connects the side ring portion 11 and the blowout side ring portion 12.
  • the suction side ring portion 11 has a substantially arc-shaped cross section with a constant curvature (for example, curvature R1) while expanding toward the suction side, and the blowout side ring portion 12 increases in diameter toward the blowout side.
  • the height of the orifice ring 8 is changed by changing the height (length) L of the intermediate ring portion 13 in accordance with the magnitude of the suction ventilation resistance at each position. Yes.
  • the blowing noise of the axial flow fan 2 can be reduced.
  • An orifice ring having a substantially arc-shaped cross section can be called a gradually changing orifice.
  • the height of the orifice ring 8 is changed by changing the height L of the intermediate ring portion 13 without changing the shapes (curvature, height, etc.) of the suction ring portion 11 and the blow ring portion 12. As a result, it is possible to obtain the effect of reducing the blowing noise and to optimize the blowing performance.
  • the axial blower according to the present invention can be applied to the suction passage of the passage structure in which the non-axisymmetric flow is formed on the suction side, and can optimize the blowing performance. Applicable to any axial flow fan.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
PCT/JP2012/004519 2011-07-13 2012-07-12 軸流送風機および空気調和機の室外機 WO2013008472A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201280030470.1A CN103649549B (zh) 2011-07-13 2012-07-12 轴流送风机和空气调节机的室外机
JP2013523838A JP6153029B2 (ja) 2011-07-13 2012-07-12 軸流送風機および空気調和機の室外機

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011154534 2011-07-13
JP2011-154534 2011-07-13

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WO2013008472A1 true WO2013008472A1 (ja) 2013-01-17

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JP (1) JP6153029B2 (zh)
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WO (1) WO2013008472A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN110678660B (zh) * 2017-05-31 2021-12-24 三菱电机株式会社 螺旋桨型叶轮及轨道车辆空调装置
KR102500528B1 (ko) * 2018-03-22 2023-02-15 엘지전자 주식회사 공기 조화기의 실외기

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000018198A (ja) * 1998-07-06 2000-01-18 Daikin Ind Ltd 送風機
JP2006077585A (ja) * 2004-09-07 2006-03-23 Mitsubishi Electric Corp 送風機および空調機
JP2008145093A (ja) * 2006-12-06 2008-06-26 Samsung Electronics Co Ltd 空気調和機の室外機
WO2009113338A1 (ja) * 2008-03-11 2009-09-17 三菱電機株式会社 空気調和機

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002053919A1 (fr) * 2000-12-28 2002-07-11 Daikin Industries, Ltd. Soufflante et unite exterieure pour conditionneur d'air
CN201771867U (zh) * 2010-07-31 2011-03-23 广东美的电器股份有限公司 一种导风装置
JP2013096622A (ja) * 2011-10-31 2013-05-20 Daikin Industries Ltd 空気調和装置の室外ユニット

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000018198A (ja) * 1998-07-06 2000-01-18 Daikin Ind Ltd 送風機
JP2006077585A (ja) * 2004-09-07 2006-03-23 Mitsubishi Electric Corp 送風機および空調機
JP2008145093A (ja) * 2006-12-06 2008-06-26 Samsung Electronics Co Ltd 空気調和機の室外機
WO2009113338A1 (ja) * 2008-03-11 2009-09-17 三菱電機株式会社 空気調和機

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CN103649549A (zh) 2014-03-19
JP6153029B2 (ja) 2017-06-28
JPWO2013008472A1 (ja) 2015-02-23
CN103649549B (zh) 2016-07-06

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