WO2014153748A1 - Ventilateur centrifuge et sèche-linge comprenant celui-ci - Google Patents

Ventilateur centrifuge et sèche-linge comprenant celui-ci Download PDF

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Publication number
WO2014153748A1
WO2014153748A1 PCT/CN2013/073321 CN2013073321W WO2014153748A1 WO 2014153748 A1 WO2014153748 A1 WO 2014153748A1 CN 2013073321 W CN2013073321 W CN 2013073321W WO 2014153748 A1 WO2014153748 A1 WO 2014153748A1
Authority
WO
WIPO (PCT)
Prior art keywords
centrifugal fan
blades
airflow
motor cover
main
Prior art date
Application number
PCT/CN2013/073321
Other languages
English (en)
Chinese (zh)
Inventor
陆彭飞
黄华
周福昌
Original Assignee
无锡小天鹅股份有限公司
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 无锡小天鹅股份有限公司 filed Critical 无锡小天鹅股份有限公司
Priority to PCT/CN2013/073321 priority Critical patent/WO2014153748A1/fr
Priority to EP13880416.6A priority patent/EP2980304B1/fr
Publication of WO2014153748A1 publication Critical patent/WO2014153748A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • 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

Definitions

  • the present invention relates to the field of household appliance equipment, and more particularly to a centrifugal fan and a dryer having the same. Background technique
  • centrifugal fan uses a centrifugal fan that rotates at a high speed to allow gas to enter the centrifugal fan from the axial direction, and is discharged from the blades of the centrifugal fan in the radial direction by the centrifugal force.
  • Centrifugal fans of centrifugal fans are usually powered by a motor that rotates at high speeds by the rotation of the motor's output shaft.
  • a motor cover is usually arranged in a central area thereof, and the motor cover has a large volume, which becomes a main obstacle for the airflow to flow into the central negative pressure region of the centrifugal fan, and the flow impinges on the surface of the motor cover to form a reflow.
  • the airflow at the air inlet of the centrifugal fan is not good, and the performance of the fan is degraded.
  • the present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention needs to provide a centrifugal fan which can better flow the airflow at the air inlet, increase the fan outlet pressure, and improve the efficiency of the fan.
  • the present invention also needs to provide a clothes dryer having the centrifugal fan.
  • a centrifugal fan includes a plurality of main blades provided at a periphery thereof, and is characterized in that a plurality of sub-blades distributed in the radial direction are provided on a face mask in which the centrifugal fan faces the air intake direction.
  • the centrifugal fan according to the present invention can effectively reduce the obstruction effect of the mask or the motor cover, so that the airflow state at the air inlet of the centrifugal fan is better, and the two-stage supercharging speed increase of the sub-blade and the main blade is realized, and the centrifugal fan is significantly enlarged.
  • the outlet air pressure increases the efficiency of the fan.
  • the mask of the centrifugal fan is a motor cover.
  • the centrifugal fan further includes: a rim having an air inlet for air inflow; and a wheel, the wheel being disposed under the rim and a central area of the wheel is configured as the motor cover, the motor cover is upwardly convex and a connecting sleeve is disposed on a top thereof; the plurality of main blades are circumferentially spaced apart from the wheel and the wheel Between the two adjacent main blades, a first air flow passage is defined; the plurality of sub-blades are sleeved around the connecting shaft on the motor cover, and between the two adjacent sub-blades A second air flow passage is defined, and the first air flow passage, the second air flow passage, and the air inlet are connected to each other.
  • the airflow from the air inlet into the centrifugal fan flows to the motor cover and the main blade.
  • the main blade In the gap between the two, in the high-speed rotation of the centrifugal fan, the main blade is boosted and accelerated, and is discharged from the first air flow passage; wherein another part of the air flow in the axial flow process can be guided by the auxiliary vane.
  • the airflow impinges on the top surface of the motor cover to rebound and return to form a turbulent flow, and the state of the inlet airflow is well adjusted, and the air guiding efficiency is greatly improved.
  • the airflow flowing into the centrifugal fan can be first speeded up by the superheating of the sub-blades, and then accelerated by the supercharging of the main blades, and the fan outlet pressure and flow rate are further improved.
  • the centrifugal fan according to the present invention can make the airflow state at the air inlet port better, avoid turbulent flow, increase the airflow pressure, increase the flow rate, and improve the fan efficiency.
  • centrifugal fan according to the present invention may have the following additional technical features:
  • the plurality of sub-blades are divided into a plurality of groups, and the plurality of sub-blades are evenly arranged around the connecting sleeve. This ensures the uniformity of the mass of the entire centrifugal fan and prevents the centrifugal fan from shaking during the rotation.
  • the plurality of sub-blades are evenly arranged around the connecting sleeve. This ensures the uniformity of the mass of the entire centrifugal fan and avoids the jitter of the centrifugal fan during the rotation.
  • the upper surface of the secondary blade is flush with the upper surface of the rim. This further enhances the stability of the flow regime and further reduces turbulence.
  • the sub-blades are the same thickness as the main blades. Thereby the flow of the gas stream is more reasonable.
  • the sub-blades are in the same direction as the leaf shape of the main blades. In this way, the flow direction of the airflow tends to be uniform, the flow is smoother, and the stability of the airflow is ensured.
  • the inflow angle of the sub-blades is the same as the inflow angle of the main blades.
  • the outflow angle of the sub-blades is slightly smaller than the outflow angle of the main blades.
  • the rim, the wheel, the plurality of main blades, and the plurality of sub blades are integrally formed. This ensures the stability of the connection between the rim, the wheel, the plurality of main blades and the plurality of sub-blades.
  • the top surface of the motor cover is formed as an arcuate surface or plane.
  • the connecting sleeve is disposed coaxially with the motor cover.
  • a clothes dryer according to a second aspect of the present invention comprising a duct, and the centrifugal fan according to the first aspect of the invention, wherein the centrifugal fan is disposed in the duct.
  • the dryer is equipped with a centrifugal fan and has high working efficiency. , good performance and other advantages.
  • FIG. 1 is a plan view of a centrifugal fan in accordance with an embodiment of the present invention
  • FIG. 2 is a side view of a centrifugal fan in accordance with an embodiment of the present invention.
  • FIG. 3 is a perspective view of a centrifugal fan in accordance with an embodiment of the present invention.
  • FIG. 4 is a schematic view of a clothes dryer having a centrifugal fan in accordance with an embodiment of the present invention. detailed description
  • connection should be understood broadly, and may be either fixed or detachable, unless explicitly stated or defined otherwise.
  • Connected, or connected integrally can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • the specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.
  • centrifugal fan 100 is an important component of the dryer 200 or the washing and drying machine, and the centrifugal fan 100 is rotated by the driving of the motor.
  • the clothes dryer 200 includes a duct 10 and a centrifugal fan 100 disposed in the duct 10.
  • the dryer 200 also includes a housing for holding the laundry, an electrical system, a housing, and the like, as this portion is known and common in the art. The skilled person is well known and will not be described again.
  • the centrifugal fan 100 includes a plurality of main blades 3 provided at the periphery thereof, and a plurality of sub-blades 4 distributed in the radial direction are provided on the face shield of the centrifugal fan 100 facing the air inlet direction.
  • the mask of the centrifugal fan is a motor cover 21, and a motor for driving the centrifugal fan 100 may be disposed behind the motor cover 21.
  • the centrifugal fan 100 of one embodiment of the present invention further includes a rim 1 and a wheel 2.
  • a rim 1 and a wheel 2 For convenience of description, in the following embodiments of the present invention, the structure of the centrifugal fan 100 will be described by taking the rim 1 and the wheel 2 in the up and down direction as an example. In the description of the embodiment of the present invention: "up and down direction" is shown by arrows in Figs. 2 and 3, for example. However, it should be noted that the indication of the direction is for illustrative purposes only and is not intended to limit the scope of the invention.
  • the rim 1 has an air inlet for air inflow.
  • the rim 1 is annular, and the inner ring of the ring defines the air inlet.
  • air can enter the centrifugal fan 100 through the air inlet to form an inlet airflow.
  • the wheel 2 can be disposed under the rim 1.
  • the central area of the wheel 2 is configured as an upwardly protruding motor cover 21, and the top of the motor cover 21 is provided with a connecting sleeve 22, and the output shaft of the motor can be sleeved thereon.
  • the sleeve 22 is coupled to rotate the centrifugal fan 100 under the driving of the motor.
  • a plurality of main blades 3 are circumferentially spaced between the rim 1 and the wheel 2, and a first air flow passage 31 is defined between the adjacent two main blades 3.
  • the airflow entering the centrifugal fan 100 from the air inlet is discharged from the first air flow passage 31 in the radial direction of the centrifugal fan 100 by the centrifugal force generated by the high-speed rotation of the centrifugal fan 100.
  • a plurality of sub-blades 4 are provided on the wheel 2, specifically, a plurality of sub-blades 4 are provided on the motor cover 21 located in the central region of the wheel 2, and a plurality of sub-blades 4 are circumferentially arranged around the connecting bushing 22,
  • a second air flow passage 41 is defined between the adjacent two sub-blades 4.
  • the first air flow path 31, the second air flow path 41, and the air inlet are in communication with each other. After entering the centrifugal fan 100 from the air inlet, the gas can be directly discharged not only from the first air flow path 31 but also from the first air flow path 31 through the second air flow path 41.
  • the airflow entering the centrifugal fan 100 from the air inlet port flows to a gap between the motor cover 21 and the main blade 3, and is driven by the main blade during the high-speed rotation of the centrifugal fan 100.
  • the supercharging speed is increased from the first air flow passage 31.
  • another part of the airflow may first flow along the second air flow passage 41 under the guidance of the auxiliary vane 4, and then flow into the first air flow passage 31 and be discharged.
  • the airflow impinges on the top surface of the motor cover 21 to rebound and return to form a turbulent flow, and the state of the inlet airflow is better improved, and the air guiding efficiency is significantly improved.
  • the airflow flowing into the centrifugal fan 100 can be first speed-up by the supercharging of the sub-blades 4, and then accelerated by the supercharging of the main blades 3, and the pressure of the airflow is further increased, thereby improving to some extent. Air flow rate.
  • the centrifugal fan 100 according to the embodiment of the present invention can better make the airflow state at the air inlet, reduce the inlet turbulence, increase the airflow pressure, increase the flow rate, and improve the air guiding efficiency.
  • the top surface of the motor cover 21 may be formed as an arc surface, and the connecting sleeve 22 is coaxially disposed with the motor cover 21, that is, The connecting sleeve 22 coincides with the axis of the motor cover 21.
  • the top surface of the motor cover 21 may be formed as a plane, and the connecting sleeve 22 is disposed coaxially with the motor cover 21, that is, the connecting sleeve 22 is disposed in the motor cover. At the center of 21.
  • the motor cover 21 can be more adapted to the shape of the motor, and the motor is more stable when the centrifugal fan 100 is driven to rotate.
  • the invention is not limited thereto, and the shape of the motor cover 21 may have different shapes depending on the different configurations of the motor, and is for illustrative purposes only, and is not intended to limit the scope of the invention.
  • the plurality of sub-blades 4 may be divided into a plurality of groups, and the plurality of sub-blades 4 may be evenly arranged around the connecting sleeve 22. This ensures the uniformity of the mass of the entire centrifugal fan 100, avoids the jitter of the centrifugal fan 100 during the rotation, and thereby avoids the confusion of the airflow entering the centrifugal fan 100.
  • the sub-blades 4 comprise a total of twenty-four, which are divided into six groups, each group comprising four sub-blades 4, wherein six sets of blades can be evenly arranged around the connecting sleeve 22, it is understood that The spacing between the six sets of blades is uniform, and the structure, shape, size, and the like of each of the six sets of blades are the same, thereby making the structural and mass distribution of the centrifugal fan 100 more uniform.
  • the four sub-blades 4 in each group of blades can be correspondingly designed according to the actual wind guiding needs.
  • a plurality of sub-blades 4 are evenly arranged around the connecting sleeve 22. That is to say, the above-mentioned twenty-four sub-blades 4 are evenly arranged around the connecting bushing 22, thereby further improving the uniformity of the mass of the centrifugal fan 100, further avoiding the jitter of the centrifugal fan 100 during the turning process, thereby The airflow entering the centrifugal fan 100 is more orderly.
  • the main blade 3 and the secondary blade 4 are both forward blades or both.
  • the outflow angles of the sub-blades 4 and the main blades 3 are similar, that is, the blade shape is basically determined. If the angle of the outflow angle is greater than 90°, it can be regarded as a forward blade shape; if the angle of the outflow angle is Less than 90°, it can be considered as a backward leaf shape.
  • the bending direction of the sub-blades 4 is the same as the bending direction of the main blades 3. For example, if the main blade 3 is bent clockwise inwardly around the connecting bushing 22, the sub-blade 4 may also be bent clockwise inwardly about the connecting bushing 22. Therefore, the airflow flowing into the second airflow passage 41 can enter the first airflow passage 31 according to the original flow direction, so that the flow direction of the airflow tends to be uniform, the flow is smoother, and the stability of the airflow is ensured. .
  • the inflow angle of the sub-blades 4 may be the same as the inflow angle of the main blades 3. This can In order to further ensure the uniformity of the flow direction of the airflow, and the airflow flows from the second airflow passage 41 to the first airflow passage 31, it is smoother and smoother, and the entrance impact loss of the airflow is reduced.
  • the outflow angle of the sub-blades 4 may be slightly smaller than the outflow angle of the main blades 3.
  • the secondary vanes 4 are the same thickness as the primary vanes 3. Thus, when the airflow flows from the second airflow passage 41 to the first airflow passage 31, the distribution of the airflow is more uniform, and the flow of the airflow in the centrifugal fan 100 can be ensured to be more stable.
  • the upper surface of the secondary vane 4 does not exceed the upper surface of the rim 1, thereby making the flow regime more stable and reducing turbulence.
  • the upper surface of the sub-blade 4 is flush with the upper surface of the rim 1, whereby the stability of the airflow state can be further improved, and turbulence can be further reduced.
  • the rim 1, the wheel 2, the plurality of main blades 3 and the plurality of sub-blades 4 are integrally formed.
  • each of the sub-blades 4 is integrally formed on the motor cover 21 of the wheel 2, and the upper and lower ends of each of the main blades 3 are integrally connected to the rim 1 and the wheel 2, respectively.
  • the rim 1, the wheel 2, the main blade 3 and the sub-blade 4 may all be plastic parts and integrally formed by injection molding. Thereby, not only the degree of stability of the connection between the rim 1, the wheel 2, the plurality of main blades 3, and the plurality of sub-blades 4 can be ensured, but also the cost of manufacturing materials can be reduced by manufacturing the centrifugal fan 100 using plastic parts. The weight of the centrifugal fan 100 is reduced.
  • the present invention also proposes a centrifugal fan comprising a centrifugal fan 100 according to the above embodiment of the present invention. Since the centrifugal fan 100 can make the airflow state at the air inlet thereof better, reduce the inlet turbulence, increase the airflow pressure, increase the flow velocity, and improve the air guiding efficiency, therefore, the centrifugal fan provided with the centrifugal fan 100 has High air conduction efficiency and good performance.
  • the centrifugal fan according to an embodiment of the present invention further includes a motor and a volute, wherein the motor and the centrifugal fan 100 may both be disposed in the volute.
  • the volute may have an upper end plate, a lower end plate, and a side wall plate disposed circumferentially.
  • the side wall plate, the upper end plate and the lower end plate of the volute jointly define an accommodation space in which the motor and the centrifugal fan 100 are disposed.
  • the upper end plate may have a second air inlet for air entering, and when the centrifugal fan 100 is disposed in the volute, the first air inlet and the second air inlet are concentric.
  • the lower end plate may be provided with a receiving groove for accommodating the motor.
  • the motor is disposed in the receiving groove.
  • the motor cover 21 can block the motor, that is, the motor cover 21 and the receiving groove can be defined. Out of the installation space, the motor is housed in the installation space, and the output shaft of the motor is connected to the connection sleeve 22.
  • the side wall panel has an air outlet for airflow, so that the airflow entering through the second air inlet and the first air inlet can finally discharge the centrifugal fan from the air outlet. Since this section is known and known to those of ordinary skill in the art, it will not be described in detail. The following briefly describes the working process of the centrifugal fan.
  • the motor is started, and the output shaft of the motor can drive the centrifugal fan 100 to rotate.
  • the air around the centrifugal fan sequentially enters the centrifugal fan through the second air inlet and the first air inlet to form an inlet air flow.
  • a part of the inlet air flow can flow directly from the gap between the motor cover 21 and the main blade 3 to the first air flow path 31 and be discharged to the outside of the centrifugal fan 100.
  • the other portion may first flow into the second air flow passage 41, and after the second air flow passage 41 is boosted and accelerated, flows into the first air flow passage 31 and is discharged to the outside of the centrifugal fan 100.
  • the high-speed airflow discharged from the centrifugal fan 100 enters the volute and is concentrated, and is discharged from the air outlet, thereby completing the discharge of the airflow by the centrifugal fan.
  • the clothes dryer 200 is provided with a centrifugal fan 100 to drive the airflow in the air duct 10 to promote air circulation to make the laundry drying faster and more uniform. Since the centrifugal fan 100 can make the airflow state at the air inlet thereof better, reduce the inlet turbulence, increase the airflow pressure, increase the flow velocity, and improve the fan efficiency, the dryer 200 is provided with the centrifugal fan 100. High efficiency and good performance.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne un ventilateur centrifuge et un sèche-linge comprenant celui-ci. Le ventilateur centrifuge (100) selon l'invention comprend : une pluralité de pales primaires (3) disposées sur sa périphérie, et une pluralité de pales secondaires (4) réparties dans des directions radiales et agencées sur un masque du ventilateur centrifuge tourné dans la direction d'admission d'air. Le ventilateur centrifuge comprend en outre un bord de roue (1) et un disque de roue (2). La zone centrale du disque de roue est construite en forme de flasque de moteur (21), la pluralité de pales primaires est agencée circonférentiellement entre la bordure de roue et le disque de roue suivant des intervalles, un premier canal de flux d'air (31) est défini entre deux pales primaires adjacentes, la pluralité de pales secondaires est emmanchée sur le flasque de moteur autour d'un arbre de connexion, un deuxième canal de flux d'air (41) est défini entre deux pales secondaires adjacentes, et les premiers canaux de flux d'air, les deuxièmes canaux de flux d'air et les entrées d'air communiquent les uns avec les autres. Le ventilateur centrifuge peut réduire efficacement l'effet d'obstruction du flasque de moteur de manière à permettre d'améliorer l'état d'écoulement du flux d'air au niveau des entrées d'air du ventilateur centrifuge, et de réaliser la suralimentation à deux étages et l'accélération des pales secondaires et des pales primaires, ce qui augmente considérablement la pression du flux d'air au niveau des sorties du ventilateur centrifuge, et améliore l'efficacité du ventilateur.
PCT/CN2013/073321 2013-03-28 2013-03-28 Ventilateur centrifuge et sèche-linge comprenant celui-ci WO2014153748A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2013/073321 WO2014153748A1 (fr) 2013-03-28 2013-03-28 Ventilateur centrifuge et sèche-linge comprenant celui-ci
EP13880416.6A EP2980304B1 (fr) 2013-03-28 2013-03-28 Ventilateur centrifuge et sèche-linge comprenant celui-ci

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2013/073321 WO2014153748A1 (fr) 2013-03-28 2013-03-28 Ventilateur centrifuge et sèche-linge comprenant celui-ci

Publications (1)

Publication Number Publication Date
WO2014153748A1 true WO2014153748A1 (fr) 2014-10-02

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PCT/CN2013/073321 WO2014153748A1 (fr) 2013-03-28 2013-03-28 Ventilateur centrifuge et sèche-linge comprenant celui-ci

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EP (1) EP2980304B1 (fr)
WO (1) WO2014153748A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108412793A (zh) * 2018-05-16 2018-08-17 株洲联诚集团控股股份有限公司 交流传动电力机车用牵引通风机及其机车
CN110131182A (zh) * 2019-06-13 2019-08-16 杭州老板电器股份有限公司 一种中置双轴流离心风机
CN114941636A (zh) * 2022-06-28 2022-08-26 华中科技大学 一种前置增压多翼离心叶轮及离心风机

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KR101625828B1 (ko) * 2014-12-08 2016-05-31 주식회사 토네이도시스템즈 스월러팬을 구비한 배기장치 모듈

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DE3942083A1 (de) * 1989-12-20 1991-06-27 Licentia Gmbh Handgefuehrte elektrowerkzeugmaschine
EP1475474A1 (fr) * 2003-05-09 2004-11-10 Electrolux Home Products Corporation N.V. Machine à sécher le linge avec agencement perfectionné de ventilateur
CN101384766A (zh) * 2006-02-15 2009-03-11 伊莱克斯家用产品股份有限公司 具有两个风扇的家用干衣机
US20080022552A1 (en) * 2006-07-28 2008-01-31 Mabe Canada Inc. Blower wheel attachment for clothes dryer
CN102191658A (zh) * 2010-03-18 2011-09-21 阿思科尔控股责任有限公司 冷凝器干衣机用风扇马达组件及包括其的冷凝器干衣机
CN102720693A (zh) * 2012-05-29 2012-10-10 苏州市太湖风机制造有限公司 一种双叶片叶轮
CN103225625A (zh) * 2013-03-28 2013-07-31 无锡小天鹅股份有限公司 离心风扇和具有其的干衣机

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108412793A (zh) * 2018-05-16 2018-08-17 株洲联诚集团控股股份有限公司 交流传动电力机车用牵引通风机及其机车
CN110131182A (zh) * 2019-06-13 2019-08-16 杭州老板电器股份有限公司 一种中置双轴流离心风机
CN114941636A (zh) * 2022-06-28 2022-08-26 华中科技大学 一种前置增压多翼离心叶轮及离心风机
CN114941636B (zh) * 2022-06-28 2023-06-16 华中科技大学 一种前置增压多翼离心叶轮及离心风机

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EP2980304A1 (fr) 2016-02-03
EP2980304A4 (fr) 2016-09-14
EP2980304B1 (fr) 2018-06-27

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