WO2021233483A1 - Rotor, ventilateur et module extérieur de climatisation - Google Patents

Rotor, ventilateur et module extérieur de climatisation Download PDF

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Publication number
WO2021233483A1
WO2021233483A1 PCT/CN2021/108153 CN2021108153W WO2021233483A1 WO 2021233483 A1 WO2021233483 A1 WO 2021233483A1 CN 2021108153 W CN2021108153 W CN 2021108153W WO 2021233483 A1 WO2021233483 A1 WO 2021233483A1
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WO
WIPO (PCT)
Prior art keywords
blade
wind wheel
trailing edge
edge
center
Prior art date
Application number
PCT/CN2021/108153
Other languages
English (en)
Chinese (zh)
Inventor
朱训智
王元
Original Assignee
青岛海尔空调电子有限公司
海尔智家股份有限公司
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 青岛海尔空调电子有限公司, 海尔智家股份有限公司 filed Critical 青岛海尔空调电子有限公司
Publication of WO2021233483A1 publication Critical patent/WO2021233483A1/fr

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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
    • 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
    • F04D29/388—Blades characterised by construction
    • 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
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F04D29/329—Details of the hub
    • 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
    • F04D29/386—Skewed 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
    • F04D29/66—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
    • F24F1/06—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 invention belongs to the technical field of air conditioners, and specifically relates to a wind wheel, a fan and an outdoor unit of an air conditioner.
  • Air conditioners have become an indispensable electrical product in people's lives, and the performance of air conditioners directly affects people's experience.
  • Air conditioners generally include an outdoor unit and an indoor unit.
  • the fan in the outdoor unit of the air conditioner is configured to dissipate the cold and heat generated by the outdoor heat exchanger.
  • the fan used in the outdoor unit of the air conditioner is generally an axial fan.
  • the air volume, noise and wind pressure of the axial fan are important indicators for evaluating its performance.
  • the current axial fan mainly reduces the thickness or thinning of the blades of the rotor.
  • the thickness of the hub is used to reduce the weight of the wind wheel, so as to reduce the load of the motor driving the wind wheel and the noise of the axial fan.
  • the existing axial flow fan has the problem that when the thickness of the blades and the hub of the wind wheel is reduced, the strength of the wind wheel itself is also reduced, so that the impeller is easily damaged or even broken.
  • the present invention provides a wind wheel, a fan, and an outdoor unit of an air conditioner.
  • the present invention provides a wind wheel that includes a hub and at least one blade; the root of the blade is connected to the outer side wall of the hub, and the blade is formed with a concave curve connected to the root.
  • the suction surface of the blade is formed with a plurality of elliptical grooves distributed along its outer peripheral edge, and the plurality of The major axes of the elliptical grooves all point to the outer peripheral edge and are inclined to the front edge in the direction from the trailing edge to the leading edge, and in the direction from the trailing edge to the leading edge
  • the area of the plurality of elliptical grooves is also gradually reduced; a polygonal groove is also formed on the suction surface of the blade, and the polygonal groove is arranged along the root and the leading edge of the blade in sequence. , The side of the plurality of elliptical grooves away from the
  • the line connecting the center of the oval groove near the trailing edge of the blade and the center of the wind wheel is connected to the outermost end of the trailing edge
  • the angle ⁇ between the line with the center of the wind wheel satisfies: 2° ⁇ 5°; and/or, the center of each of the two adjacent elliptic grooves is The angle ⁇ formed between the lines between the centers satisfies: 10° ⁇ 15°; and/or, the line between the outermost end of the trailing edge of the blade and the center of the wind wheel and its leading edge
  • the angle ⁇ between the line connecting the outermost end of and the center of the wind wheel satisfies: 81° ⁇ 85°.
  • the trailing edge of the blade is provided with a blunt triangle recessed structure, and the connection between the lowest point of the recessed structure and the center of the wind wheel is The angle ⁇ between the line and the line connecting the outermost end of the trailing edge of the blade and the center of the wind wheel satisfies: 5° ⁇ 7°.
  • the number of the blades is multiple, and the multiple blades are uniformly arranged on the outer side wall of the hub along the circumferential direction of the hub, and each The projections of the leading edge of each blade and the trailing edge of the adjacent blade on the outer side wall of the hub do not overlap.
  • the hub includes an outer ring wheel connected with the at least one blade on an outer side wall and an inner ring wheel coaxially arranged inside the outer ring wheel,
  • the inner ring wheel is formed with a shaft hole for connecting with the output shaft of the motor; a plurality of spokes parallel to the axis of the wind wheel and spaced apart are connected between the inner ring wheel and the outer ring wheel;
  • a horizontal plate perpendicular to the axis of the wind wheel is connected between the two adjacent spoke plates, the outer ring wheel and the inner ring wheel, and a through hole is provided in the middle of each of the horizontal plates .
  • a plurality of limiting grooves are arranged on the inner circumferential surface of the shaft hole at intervals along the axial direction, and the shaft hole is installed with the limiting grooves.
  • An aluminum alloy shaft sleeve with matching grooves, and the aluminum alloy shaft sleeve is used to connect with the output shaft of the motor.
  • the present invention also provides a fan.
  • the fan includes a motor and the wind wheel in any of the above technical solutions; the output shaft of the motor is connected to the hub of the wind wheel.
  • the present invention also provides an outdoor unit of an air conditioner, in which the above-mentioned fan is configured.
  • a plurality of elliptical grooves distributed along the outer periphery are formed on the suction surface of the blade of the wind wheel, and the length of the plurality of elliptical grooves is
  • the shafts all point to the outer periphery and are inclined to the front edge in the direction from the trailing edge to the leading edge, and the area of the multiple elliptical grooves gradually decreases in the direction from the trailing edge to the leading edge; and the suction of the blade
  • the polygonal grooves on the surface are arranged to form the periphery of the blade along the root, the leading edge, the side of the plurality of elliptical grooves away from the outer periphery, and the trailing edge in sequence.
  • a plurality of spokes parallel to the axis of the wind wheel and spaced apart are connected between the inner ring wheel and the outer ring wheel of the hub;
  • a horizontal plate perpendicular to the axis of the wind wheel is connected between the two spoke plates, the outer ring wheel and the inner ring wheel, and a through hole is provided in the middle of each horizontal plate. Therefore, the structure of the hub further reduces the overall weight of the wind wheel on the basis of ensuring the connection strength of the hub itself, so as to better reduce the load of the motor in the fan and reduce the noise of the fan.
  • Figure 1 is a schematic diagram of the structure of the wind wheel of this embodiment
  • Figure 2 is a schematic diagram of the structure of the hub in the wind wheel of this embodiment
  • FIG. 3 is a schematic diagram of the structure of the aluminum alloy shaft sleeve and the shaft hole in the wind wheel of this embodiment
  • FIG. 4 is a graph of noise comparison test results between the fan of the embodiment and the original fan at different speeds.
  • 1-wheel hub 11-outer ring wheel; 12-inner ring wheel; 121-shaft hole; 13-spoke plate; 14-transverse plate; 141-through hole; 15-aluminum alloy shaft sleeve;
  • the terms “installed”, “connected”, and “connected” should be understood in a broad sense. For example, they can be fixed or fixed. It is a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • installed e.g., they can be fixed or fixed. It is a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • the specific meaning of the above-mentioned terms in the present invention can be understood according to specific circumstances.
  • this embodiment provides a wind wheel, a fan, and an outdoor unit of an air conditioner.
  • this embodiment provides a wind wheel, which includes a hub 1 and at least one blade 2; the root of the blade 2 is connected to the outer side wall of the hub 1, and the blade 2 is formed with The leading edge 21 with a concave curve connected to the root, a trailing edge 22 with a convex curve, and an outer peripheral edge 23 connecting the leading edge 21 and the trailing edge 22; A plurality of elliptical grooves 24.
  • the long axes of the plurality of elliptical grooves 24 all point to the outer peripheral edge 23 and are inclined to the front edge 21 in the direction from the trailing edge 22 to the leading edge 21, and in the direction from the trailing edge 22 to the leading edge 21.
  • the area of the plurality of elliptical grooves 24 in the direction of the leading edge 21 also gradually decreases; the suction surface of the blade 2 is also formed with a polygonal groove 25, and the polygonal grooves 25 are arranged along the root and the leading edge of the blade 2 in sequence. 21.
  • the side of the plurality of elliptical grooves 24 away from the outer peripheral edge 23 and the trailing edge 22 form the periphery thereof.
  • the suction surface of the blade 2 is the side on the inlet side of the blade 2.
  • a plurality of elliptical grooves 24 are provided on the suction surface of the blade 2, and the grooves themselves are used to reduce
  • the part of the blade 2 spaced between the adjacent elliptical grooves 24 serves as a reinforcing rib to ensure the overall strength of the blade 2.
  • the shape of the polygonal groove 25 provided on the suction surface of the blade 2 is also compatible with the shape and size of the blade 2 itself, and the position and size of the multiple elliptical grooves 24 provided.
  • the polygonal groove 25 is used for In order to reduce the weight of the blade 2 near the root position.
  • the part between the periphery of the polygonal groove 25 and the root of the blade 2, the leading edge 21, the side of the plurality of elliptical grooves 24 away from the outer peripheral edge 23 and the trailing edge 22 has a reinforcing rib to ensure the overall strength of the blade 2. And further improve the operating efficiency of the fan.
  • the polygonal groove 25 and the multiple elliptical grooves 24 on the blade 2 of the present embodiment are not randomly arranged. When they are installed, the position, size and shape of the blade 2 are all considered to reduce the weight and weight of the blade 2. A factor that guarantees the strength of the blade 2.
  • a plurality of elliptical grooves 24 distributed along the outer peripheral edge 23 are formed on the suction surface of the blade 2 of the wind wheel, and the major axes of the plurality of elliptical grooves 24 are equal to each other.
  • the polygonal groove 25 on the suction surface of the blade 2 is arranged to form its periphery along the root of the blade 2, the leading edge 21, the side of the plurality of elliptical grooves 24 away from the outer peripheral edge 23, and the trailing edge 22 in sequence.
  • the major axis and minor axis of the multiple elliptical grooves 24 are all reduced in the form of an arithmetic sequence, so that the weight of the different positions of the blade 2 is gradually reduced, thereby The weight of each part of the blade 2 is basically equal, which helps to ensure the operating efficiency of the fan.
  • the change in the size of the elliptical groove 24 and the change in the major axis direction are both for adapting to the shape and size of the blade 2 itself, so as to sufficiently and reasonably reduce the weight of the blade 2 without causing its own The strength is greatly reduced.
  • the line connecting the center of the oval groove 24 of the blade 2 near the trailing edge 22 and the center of the wind wheel is connected to the outermost end of the trailing edge 22 and the wind wheel.
  • the angle ⁇ between the lines of the center of the circle satisfies: 2° ⁇ 5°, and the preferred ⁇ is 3°; and/or, the center of each of the two adjacent elliptical grooves 24 and the center of the wind wheel
  • the angle ⁇ formed between the connecting lines satisfies: 10° ⁇ 15°, and the preferred ⁇ is 13°; and/or, the line connecting the outermost end of the trailing edge 22 of the blade 2 and the center of the wind wheel
  • the trailing edge 22 of the blade 2 is provided with a blunt triangle recessed structure 26, and the line between the lowest point of the recessed structure 26 and the center of the wind wheel is connected to
  • the angle ⁇ between the outermost end of the trailing edge 22 of the blade 2 and the center of the wind wheel satisfies: 5° ⁇ 7°.
  • the hub 1 is connected to a motor, and the rotation of the motor shaft drives the hub 1 to rotate, thereby driving the blades 2 to rotate around the axial direction, so that the airflow flows.
  • the airflow forms a vortex at the trailing edge 22 of the blade 2.
  • the nearly " ⁇ "-shaped recessed structure 26 of the trailing edge 22 of the blade 2 reduces the wake vortex, thereby reducing the vortex noise, and ultimately reducing the rotation of the wind turbine. The noise generated at the time.
  • the number of blades 2 is multiple, and the plurality of blades 2 are evenly arranged on the outer side wall of the hub 1 along the circumferential direction of the hub 1, and each blade 2
  • the projections of the leading edge 21 of the leading edge 21 and the trailing edge 22 of the adjacent blade 2 on the outer side wall of the hub 1 do not overlap.
  • a plurality of blades 2 are evenly distributed on the side wall of the hub 1, so that the fan rotates more smoothly and cuts the air flow more uniformly, thereby further reducing the noise during the rotation of the wind wheel.
  • the projections of the leading edge 21 of each blade 2 and the trailing edge 22 of the adjacent blade 2 on the end surface of the hub 1 do not overlap, that is, the adjacent blades 2 are separated by a certain distance, and the airflow is between the two adjacent blades 2. There is no whirlpool, which can further improve the air supply efficiency of the wind wheel.
  • the hub 1 includes an outer ring wheel 11 with at least one blade 2 connected to the outer side wall and coaxially arranged on the outer ring.
  • the inner ring wheel 12 inside the wheel 11, the inner ring wheel 12 is formed with a shaft hole 121 for connecting with the output shaft of the motor;
  • a plurality of spokes 13; the adjacent two spokes 13 and the outer ring wheel 11 and the inner ring wheel 12 are connected with a transverse plate 14 perpendicular to the axis of the wind wheel, and the middle of each transverse plate 14 is provided with a through ⁇ 141.
  • the structure of the hub 1 further reduces the overall weight of the wind wheel on the basis of ensuring the connection strength of the hub 1 itself, so as to better reduce the load of the motor in the fan and reduce the noise of the fan.
  • the inner peripheral surface of the shaft hole 121 A plurality of limiting grooves are arranged on the upper part at intervals along its axial direction, and an aluminum alloy shaft sleeve 15 matching the limiting groove direction is installed in the shaft hole 121, and the aluminum alloy shaft sleeve 15 is used for connecting with the output shaft of the motor.
  • the wind wheel in the outdoor unit of the air conditioner is generally relatively large, and its torque is relatively large during operation.
  • the plastic hub 1 needs to be taken into consideration for its demolding, resulting in a certain inclination angle, and the shaft hole The diameter of 121 is different from top to bottom.
  • the gap may be inconsistent. Long-term operation may cause wear and tear to the hub 1, which poses a certain safety hazard.
  • an aluminum alloy shaft sleeve 15 is installed in the shaft hole 121 of the wheel hub 1 to match its limiting groove.
  • the aluminum alloy material itself has the advantage of lighter weight, and the aluminum alloy is more wear-resistant than plastic.
  • the alloy shaft sleeve 15 can effectively solve the above-mentioned potential safety hazards.
  • this embodiment also provides a fan.
  • the fan includes a motor and the wind wheel in any of the above embodiments; the output shaft of the motor is connected to the hub 1 of the wind wheel.
  • the fan of this embodiment basically has a noise reduction close to 1dB under the same speed condition, and the improvement effect is compared. obvious.
  • this embodiment also provides an outdoor unit of an air conditioner, and the above-mentioned fan is configured in the outdoor unit of the air conditioner.

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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)

Abstract

La présente invention concerne un rotor, un ventilateur, et un module extérieur de climatisation. Le rotor comprend un moyeu (1) et au moins une pale (2). La pale (2) est formée avec un bord avant (21) incurvé concave et un bord de queue (22) incurvé convexe reliés à une partie base de la pale (2) et un bord périphérique (23) reliant le bord avant (21) et le bord de queue (22). Une pluralité d'évidements elliptiques (24) disposés le long du bord périphérique (23) de la pale (2) est formée sur une surface d'aspiration de la pale (2). La pluralité d'évidements elliptiques (24) présente des axes longs pointant vers le bord périphérique (23) et s'inclinant successivement vers le bord avant (21) selon une direction allant du bord de queue (22) au bord avant (21), et présente des surfaces progressivement réduites. Un évidement polygonal (25) est en outre formé sur la surface d'aspiration. Par la formation d'un évidement polygonal et d'une pluralité d'évidements elliptiques s'adaptant à la forme et à la taille d'une pale du rotor, le poids de la pale est réduit et la force de liaison de la pale est assurée.
PCT/CN2021/108153 2020-08-31 2021-07-23 Rotor, ventilateur et module extérieur de climatisation WO2021233483A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010860154.3A CN112049819A (zh) 2020-08-31 2020-08-31 风轮、风扇及空调器室外机
CN202010860154.3 2020-08-31

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WO2021233483A1 true WO2021233483A1 (fr) 2021-11-25

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PCT/CN2021/108153 WO2021233483A1 (fr) 2020-08-31 2021-07-23 Rotor, ventilateur et module extérieur de climatisation

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WO (1) WO2021233483A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112049819A (zh) * 2020-08-31 2020-12-08 青岛海尔空调电子有限公司 风轮、风扇及空调器室外机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2172935A (en) * 1985-03-26 1986-10-01 Liaw Shui Lai A cool and warm electric fan
JP2008157113A (ja) * 2006-12-25 2008-07-10 Daikin Ind Ltd 送風機
CN102536898A (zh) * 2010-12-29 2012-07-04 台达电子工业股份有限公司 风扇及其叶轮
CN202991623U (zh) * 2012-06-15 2013-06-12 美的集团股份有限公司 轴流风轮
CN107975494A (zh) * 2017-11-22 2018-05-01 广东美的暖通设备有限公司 轴流风轮和空调
CN112049819A (zh) * 2020-08-31 2020-12-08 青岛海尔空调电子有限公司 风轮、风扇及空调器室外机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102536900A (zh) * 2012-02-17 2012-07-04 美的集团有限公司 一种轴流风轮
CN103511339B (zh) * 2012-06-29 2016-02-03 珠海格力电器股份有限公司 空调、轴流风机及其轴流风叶
JP6926428B2 (ja) * 2016-09-27 2021-08-25 株式会社富士通ゼネラル 軸流ファン及びそれを用いた室外機
CN109707644B (zh) * 2019-02-02 2023-11-03 广东美的暖通设备有限公司 轴流电机及具有其的空气处理装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2172935A (en) * 1985-03-26 1986-10-01 Liaw Shui Lai A cool and warm electric fan
JP2008157113A (ja) * 2006-12-25 2008-07-10 Daikin Ind Ltd 送風機
CN102536898A (zh) * 2010-12-29 2012-07-04 台达电子工业股份有限公司 风扇及其叶轮
CN202991623U (zh) * 2012-06-15 2013-06-12 美的集团股份有限公司 轴流风轮
CN107975494A (zh) * 2017-11-22 2018-05-01 广东美的暖通设备有限公司 轴流风轮和空调
CN112049819A (zh) * 2020-08-31 2020-12-08 青岛海尔空调电子有限公司 风轮、风扇及空调器室外机

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