WO2020024401A1 - 一种斜流风机 - Google Patents

一种斜流风机 Download PDF

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Publication number
WO2020024401A1
WO2020024401A1 PCT/CN2018/107164 CN2018107164W WO2020024401A1 WO 2020024401 A1 WO2020024401 A1 WO 2020024401A1 CN 2018107164 W CN2018107164 W CN 2018107164W WO 2020024401 A1 WO2020024401 A1 WO 2020024401A1
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WIPO (PCT)
Prior art keywords
fan
degrees
fan blade
flow fan
blade
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PCT/CN2018/107164
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English (en)
French (fr)
Inventor
郭宇
Original Assignee
深圳市爱派环保物联科技有限公司
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Application filed by 深圳市爱派环保物联科技有限公司 filed Critical 深圳市爱派环保物联科技有限公司
Publication of WO2020024401A1 publication Critical patent/WO2020024401A1/zh
Priority to US17/001,856 priority Critical patent/US20200408221A1/en

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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
    • F04D29/384—Blades characterised by form
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D1/025—Comprising axial and radial stages
    • 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
    • F04D29/30—Vanes
    • 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
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F04D29/444—Bladed diffusers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/06—Helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2238—Special flow patterns

Definitions

  • the invention belongs to the technical field of fans, and particularly relates to a high-efficiency diagonal flow fan, which is applied to various ventilation devices, equipment and systems.
  • the fans can be divided into axial flow, diagonal flow (also known as mixed flow) and turbine fans. Because diagonal flow fans have large air volume and wind pressure, they have good linearity and wide The speed regulation range is widely used in ventilation devices, equipment and systems with a certain wind resistance load.
  • the diagonal flow fan simply distributes the fan blades in a cylindrical motor housing / hood.
  • the housing is also generally cylindrical, with the same diameter of the air inlet and outlet. There is no front and rear air guide structure. The fan blades forward to the rear airflow.
  • the technical problem to be solved by the present invention is: in order to reduce the front and rear ends of the existing fan blades, due to the large difference in air velocity, the pressure difference between the two sides of the fan blades is large, turbulence and noise are formed, and energy efficiency is reduced.
  • an improved structure of a fan in order to reduce the front and rear ends of the existing fan blades, due to the large difference in air velocity, the pressure difference between the two sides of the fan blades is large, turbulence and noise are formed, and energy efficiency is reduced.
  • the invention provides a diagonal flow fan, which includes a fan blade / body, an air guide hood, a guide vane, and a casing.
  • the fan blade / body and the guide vane are connected through a central bearing and fixed to a conical fan.
  • the bearing at the center of the leaf / body passes through a reserved hole in the center of the guide vane and is fixed.
  • the air guide hood is directly clamped to the corresponding position on the shell through the role of a locking point, and the guide vane and the shell are screwed through the screw. fixed.
  • the technical solution adopted in the embodiment of the present invention further includes: the fan blade / body is conical.
  • the technical solution adopted in the embodiment of the present invention further includes: the taper A of the conical fan blade / body is between 50 degrees and 60 degrees.
  • the technical solution adopted in the embodiment of the present invention further includes: the conical fan blade and the axial inclination angle B1 is greater than 45 degrees and B2 is less than 65 degrees.
  • the technical solution adopted in the embodiment of the present invention further includes that the number of the circular fan blades is an odd number.
  • the technical solution adopted in the embodiment of the present invention further includes that the air hood is a bell mouth cone, the air hood is close to the fan blade / body, and the taper D of the air hood is 6 to 8 degrees smaller than the fan blade .
  • the technical solution adopted in the embodiment of the present invention further includes: the tangent to the initial arc segment of the air guide vane and the axial inclination angle E is about 45 degrees.
  • the technical solution adopted in the embodiment of the present invention further includes that: the number of the guide vanes is even, which is only one more than the number of fan blades.
  • the technical solution adopted in the embodiment of the present invention further includes: the shell is a cylindrical shell.
  • the beneficial effect of the embodiment of the present invention is that the inclined flow fan adopting the present invention has a taper of 50 to 60 degrees due to the conical fan blade / body and the motor housing / cover.
  • a cone-shaped air baffle is used from the front end of the fan blades to the whole part of the air supply.
  • the fan guide is used to further guide the spiral airflow to the axial direct current to reduce the frictional resistance of the airflow and the components after the wind, which has doubled the wind pressure and energy efficiency of the fan. And effectively reduce the noise.
  • FIG. 1 is an assembly schematic diagram of a diagonal flow fan according to an embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view of a diagonal flow fan according to an embodiment of the present invention.
  • FIG. 3 is a front view of a diagonal flow fan according to an embodiment of the present invention.
  • the diagonal flow fan includes a fan blade / body 1, an air hood 2, a guide vane 3, and a casing 4.
  • the fan blade / body 1 is conical, and other shapes are also possible.
  • the blade / body 1 and the guide vane 3 are connected through a central bearing (not shown).
  • the bearing fixed on the conical fan blade / body center 1 passes through a reserved hole in the center of the guide vane 3 and is fixed.
  • the air hood 2 is directly caught at a corresponding position on the casing 4 through the action of a snap point.
  • the connection mode of the guide vane 3 and the casing 4 is fixed by screws, but it can also be fixed by other methods.
  • the taper A of the conical fan blade / body 1 is between 50 degrees and 60 degrees, and the conical fan blade and the axial inclination angle B1 is greater than 45 degrees to B2 is less than 65 degrees, that is, the conical fan blade cutting wind angle C2 It is more than 25 degrees to C1 is less than 45 degrees, and the number of conical blades is odd.
  • the air baffle 2 is a bell-shaped cone.
  • the air baffle 2 is as close as possible to the conical fan blade / body 1.
  • Its taper D is 6 to 8 degrees smaller than the taper of the fan blade, so that the cross-sectional area of the air supply between the two leaves is between During the whole process, the proper amount is gradually reduced (the volume of the air is reduced after compression), so that the air flow keeps the flow velocity as consistent as possible when changing the flow direction, thereby creating a "siphon effect" at the front and back ends of the blades, and the pressure difference between the two sides of the blades Minimize, minimize driving resistance, and increase wind pressure by a factor of 500-700pa or more.
  • the guide vane 3 guides the spiral airflow to the axial direct current, reducing the frictional resistance between the airflow and the components after the airflow.
  • Key points for designing guide vane 3 The tangent to the initial arc of guide vane 3 and the axial inclination E are about 45 degrees. The number is even, which is only one more than the number of fans. It can effectively reduce the wind and minimize Wind resistance.
  • the casing 4 is a cylindrical casing, and it can be understood that the casing 4 may also have other shapes.

Landscapes

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

Abstract

一种斜流风机，包括扇叶/体（1）、导风罩（2）、定向导风叶（3）和外壳（4），扇叶/体（1）和定向导风叶（3）之间通过中心的轴承连接，固定在圆锥形扇叶/体（1）中心的轴承穿过定向导风叶（3）中心的预留孔并固定，导风罩（2）通过卡点的作用直接卡住在外壳（4）上的相应位置，定向导风叶（3）与外壳（4）通过螺丝固定。该斜流风机最大限度地减少气流突变和紊流，提高了风机的风压和效能，并降低了噪音。

Description

一种斜流风机 技术领域
本发明属于风机技术领域，尤其涉及一种高效斜流风机，应用于各种通风装置、设备及系统。
 背景技术
根据扇叶与轴向倾角的大小，风机可分为轴流、斜流（也称作混流）和涡轮风机，斜流风机因兼具较大风量及风压，且具有良好的线性和较宽的调速范围，因而被广泛应用于有一定风阻负载的通风装置、设备及系统。一般的斜流风机只是简单地将扇叶分布于圆柱形电机外壳/罩，外壳通常也为圆柱形，进出风口直径相同，没有前、后导风结构，扇叶前进风至后出风端气流速度有较大变化甚至突变，扇叶两面具有较大压差，从而造成紊流及噪声，并且出风气流成螺旋状，造成气流与出风后部件的摩擦阻力增加，降低了能效，风压通常也在200pa以下，致使其应用受到一定限制。
 技术问题
本发明拟解决的技术问题是：为降低现有风机的扇叶的前后端，因气流速度相差较大，致使扇叶两面的压差较大，形成紊流及噪音，降低能效等问题，旨在提供一种改进结构的风机。
 技术解决方案
本发明提供一种斜流风机，包括扇叶/体、导风罩、定向导风叶和外壳，所述扇叶/体和定向导风叶之间通过中心的轴承连接，固定在圆锥形扇叶/体中心的轴承穿过定向导风叶中心的预留孔并固定，所述导风罩通过卡点的作用直接卡住在外壳上的相应位置，所述定向导风叶与外壳通过螺丝固定。 
本发明实施例采取的技术方案还包括：所述扇叶/体为圆锥形。
本发明实施例采取的技术方案还包括：所述圆锥形扇叶/体的锥度A在50度至60度之间。
本发明实施例采取的技术方案还包括：所述圆锥形扇叶与轴向倾角B1为大于45度至B2为小于65度之间。
本发明实施例采取的技术方案还包括：所述圆扇叶数量为奇数。
本发明实施例采取的技术方案还包括：所述导风罩为喇叭口锥形，所述导风罩靠近扇叶/体，所述导风罩锥度D比扇叶锥度小6度至8度。
本发明实施例采取的技术方案还包括：所述导风叶起始弧段切线与轴向倾角E约为45度。
本发明实施例采取的技术方案还包括：所述定向导风叶数量为偶数，仅比扇叶数量多一片。
本发明实施例采取的技术方案还包括：所述外壳为圆柱形外壳。
 有益效果
相对于现有技术，本发明实施例所产生的有益效果在于：采用本发明所述的斜流风机，由于圆锥形扇叶/体及电机外壳/罩，锥度在50度至60度之间，并在扇叶前端至送风整个部分采用圆锥形导风罩，其锥度比扇叶锥度小6度至8度，使两扇叶间送风截面积在整个过程中适量逐渐变小（空气在压缩后体积缩小），以使气流在改变流向时保持流速尽可能一致，从而在扇叶前后两端产生“虹吸效应”，并使扇叶两面的压差最小，最大限度地减小了驱动阻力，同时，进一步在扇叶出风端采用定向导风叶，将螺旋形气流导流至轴向直流，减少气流与出风后部件的摩擦阻力，成倍地提高了风机的风压和能效，并有效降低了噪声。
 附图说明
图 1为本发明实施例的斜流风机的组装示意图。
图2为本发明实施例的斜流风机的剖面示意图。
图3为本发明实施例的斜流风机的正视图。
 本发明的最佳实施方式
请参阅图1至图3，本发明实施例的斜流风机包括扇叶/体1、导风罩2、定向导风叶3和外壳4。扇叶/体1为圆锥形，也可以为其他形状。扇叶/体1和定向导风叶3之间通过中心的轴承（图未示）连接。固定在圆锥形扇叶/体中心1的轴承，穿过定向导风叶3中心的预留孔并固定。导风罩2通过卡点的作用直接卡住在外壳4上的相应位置。定向导风叶3与外壳4的连接方式是用螺丝固定，也可以通过其他方式固定。
圆锥形扇叶/体1的锥度A在50度至60度之间，圆锥形扇叶与轴向倾角B1为大于45度至B2为小于65度之间，即圆锥形扇叶切风角度C2为大于25度至C1为小于45度之间，圆锥形扇叶数量为奇数。
导风罩2为喇叭口锥形，导风罩2尽可能靠近圆锥形扇叶/体1，其锥度D比扇叶锥度小6度至8度，以使两扇叶间送风截面积在整个过程中适量逐渐变小（空气在压缩后体积缩小），以使气流在改变流向时保持流速尽可能一致，从而在扇叶前后两端产生“虹吸效应”，并使扇叶两面的压差最小，最大限度地减小了驱动阻力，并成倍地提高了风压，可达500-700pa，甚至以上。
定向导风叶3使螺旋形出风气流导流为轴向直流，减小了气流与出风后部件的摩擦阻力。定向导风叶3设计要点：导风叶3起始弧段切线与轴向倾角E约为45度，数量为偶数，仅比扇叶数量多一片，在有效导风的同时最大限度地减小导风阻力。
外壳4为圆柱形外壳，可以理解，外壳4也可以为其他形状。

Claims (9)

  1. 一种斜流风机，其特征在于，包括扇叶/体、导风罩、定向导风叶和外壳，所述扇叶/体和定向导风叶之间通过中心的轴承连接，固定在圆锥形扇叶/体中心的轴承穿过定向导风叶中心的预留孔并固定，所述导风罩通过卡点的作用直接卡住在外壳上的相应位置，所述定向导风叶与外壳通过螺丝固定。
  2. 根据权利要求1所述的斜流风机，其特征在于，所述扇叶/体为圆锥形。
  3. 根据权利要求1所述的斜流风机，其特征在于，所述圆锥形扇叶/体的锥度A在50度至60度之间。
  4. 根据权利要求1所述的斜流风机，其特征在于，所述圆锥形扇叶/体与轴向倾角B1为大于45度至B2为小于65度之间。
  5. 根据权利要求3或4所述的斜流风机，其特征在于，所述圆扇叶/体数量为奇数。
  6. 根据权利要求1所述的斜流风机，其特征在于，所述导风罩为喇叭口锥形，所述导风罩靠近扇叶/体，所述导风罩锥度D比扇叶/体锥度小6度至8度。
  7. 根据权利要求1所述的斜流风机，其特征在于，所述导风叶起始弧段切线与轴向倾角E约为45度。
  8. 根据权利要求7所述的斜流风机，其特征在于，所述定向导风叶数量为偶数，仅比扇叶数量多一片。
  9. 根据权利要求1所述的斜流风机，其特征在于，所述外壳为圆柱形外壳。
PCT/CN2018/107164 2018-08-01 2018-09-23 一种斜流风机 WO2020024401A1 (zh)

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US17/001,856 US20200408221A1 (en) 2018-08-01 2020-08-25 Oblique flow fan

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CN201821231561.2U CN209041141U (zh) 2018-08-01 2018-08-01 一种斜流风机
CN201821231561.2 2018-08-01

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN212690455U (zh) * 2020-06-02 2021-03-12 李敏 一种整体式扇叶

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6458946A (en) * 1987-08-31 1989-03-06 Toshiba Corp Outdoor unit of separation type air conditioner
JPH01134135A (ja) * 1987-11-18 1989-05-26 Matsushita Electric Ind Co Ltd 分離型空気調和機の送風装置
CN201288698Y (zh) * 2008-10-29 2009-08-12 上海南泰通风机设备有限公司 斜流风机
CN104121230A (zh) * 2013-04-24 2014-10-29 福建华大电机有限公司 一种导流式斜流风机

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6458946A (en) * 1987-08-31 1989-03-06 Toshiba Corp Outdoor unit of separation type air conditioner
JPH01134135A (ja) * 1987-11-18 1989-05-26 Matsushita Electric Ind Co Ltd 分離型空気調和機の送風装置
CN201288698Y (zh) * 2008-10-29 2009-08-12 上海南泰通风机设备有限公司 斜流风机
CN104121230A (zh) * 2013-04-24 2014-10-29 福建华大电机有限公司 一种导流式斜流风机

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