WO2023019733A1 - Air blower that is pre-tightened using magnetic force - Google Patents

Air blower that is pre-tightened using magnetic force Download PDF

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Publication number
WO2023019733A1
WO2023019733A1 PCT/CN2021/127219 CN2021127219W WO2023019733A1 WO 2023019733 A1 WO2023019733 A1 WO 2023019733A1 CN 2021127219 W CN2021127219 W CN 2021127219W WO 2023019733 A1 WO2023019733 A1 WO 2023019733A1
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WO
WIPO (PCT)
Prior art keywords
rear bearing
blower
bearing seat
impeller
magnetic steel
Prior art date
Application number
PCT/CN2021/127219
Other languages
French (fr)
Chinese (zh)
Inventor
钟仁志
袁军
韩春江
蒋玉玺
姚莹海
Original Assignee
鑫磊压缩机股份有限公司
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Filing date
Publication date
Priority claimed from CN202110946835.6A external-priority patent/CN113653662A/en
Application filed by 鑫磊压缩机股份有限公司 filed Critical 鑫磊压缩机股份有限公司
Publication of WO2023019733A1 publication Critical patent/WO2023019733A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • F24F3/065—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1405—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0096—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater combined with domestic apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only
    • F24F2003/1446—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only by condensing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/18—Details or features not otherwise provided for combined with domestic apparatus
    • F24F2221/183—Details or features not otherwise provided for combined with domestic apparatus combined with a hot-water boiler
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/54—Heating and cooling, simultaneously or alternatively

Definitions

  • the invention relates to the field of air blowers, in particular to an air blower preloaded by magnetic force.
  • the centrifugal fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induction of boilers and industrial furnaces; cooling and cooling of air conditioning equipment and household appliances Ventilation; drying and selection of grain; wind tunnel wind source and inflation and propulsion of hovercraft, etc.
  • a Chinese invention patent application discloses a centrifugal blower, including an impeller, a casing housing the rotor and stator of the electric drive for the impeller shaft, and a cooling system.
  • the object of the present invention is to further improve such a centrifugal blower with regard to the required cooling system.
  • paths are provided in the housing for a first cooling medium and a second cooling medium, which is cooled by means of the housing by the first cooling medium, and the paths are formed by the intact material of the housing The walls are separated from each other.
  • the existing technology has the following disadvantages: when the blower is working, the high-pressure gas on the back plate of the blower impeller will generate a large axial force and then drive the motor shaft to move axially. If there is no preload, the end surface of the rear bearing and the motor shaft will There will be a gap between the shoulders, which will cause the rear bearing to be easily damaged; generally, a wave spring is arranged between the outer side of the rear bearing seat and the inner side of the pressure plate to generate pre-tightening force; the material of the wave spring is 65Mn, which is easy to rust and depends on This kind of contact mechanical preload is prone to fatigue failure, which reduces the service life and stability of the bearing.
  • the purpose of the present invention is: in view of the above problems, it is proposed to respectively set the driving magnet and the driven magnet on the magnet platen and the rear bearing seat, and utilize the magnetic force to generate non-contact pretightening force; It also avoids the fatigue failure problem of contact mechanical preload, thereby improving the service life and stability of the bearing, which is a blower using magnetic preload.
  • a blower preloaded by magnetic force includes a motor barrel, a front bearing seat, a rear bearing seat, a front bearing, a rear bearing, a motor shaft, a blower impeller, a volute and a magnetic steel pressure plate; the front bearing and the rear bearing are respectively located on The front bearing seat and the rear bearing seat are respectively sleeved on the outer walls of the two ends of the motor shaft.
  • the blower impeller is fixed on one end of the motor shaft and is located in the volute; the magnetic steel pressure plate is fixed on the outer side of the rear bearing seat, and the inner side of the magnetic steel pressure plate is fixed.
  • the outer side of the rear bearing seat is fixed with driven magnets, the drive magnets and the driven magnets are relatively distributed, and the opposite surface magnetic poles of the drive magnets and the driven magnets are the same; the rear bearing seat and the magnet plate A partition is arranged between them, and the partition is pressed and fixed to the rear bearing seat by a magnetic steel pressure plate, and the partition is installed or removed according to the required magnetic force.
  • spirally distributed copper tubes are arranged inside the volute, and the two ends of the copper tubes are respectively used for connecting the water inlet device and the drainage device, and the copper tubes are used for cooling the high-temperature gas in the inner cavity of the volute.
  • the blower impeller adopts a three-dimensional flow impeller made of composite material.
  • the composite material used for the blower impeller is carbon fiber and polytetrafluoroethylene.
  • a fairing is fixedly arranged at the air inlet end of the blowing impeller, and the fairing is used to guide the air inhaled by the blowing impeller so as to improve the blowing efficiency of the blower.
  • the front bearing seat is provided with a sealing part, and the sealing part is located on the back of the blower impeller to prevent the high-pressure gas at the blower impeller from leaking to the front bearing position; the motor barrel, the front bearing seat and the sealing part are integrally formed.
  • the rear bearing seat includes a first rear bearing seat and a second rear bearing seat, the first rear bearing seat is provided with a first inner hole, and the outer wall of the second rear bearing seat is embedded in the first inner hole; the second rear bearing seat The seat is provided with a second inner hole and a sealing groove, and the rear bearing is embedded in the second inner hole; the sealing groove is located on the outer wall of the second rear bearing seat, and a sealing ring is arranged in the sealing groove, and the sealing rings are arranged separately in the radial direction. In contact with the sealing groove and the first bore.
  • a water cooling channel is provided in the motor barrel, and the water inlet end and the water outlet end of the water cooling channel are respectively connected with the water inlet device and the drainage device, and the water cooling channel is used for cooling the inside of the blower.
  • the water cooling channel is in a spiral shape.
  • the magnetic steel pressure plate and the rear bearing seat are respectively provided with relatively distributed driving magnets and driven magnets, and since the opposite surface magnetic poles of the driving magnets and the driven magnets are the same, a repulsive force is generated between the two and the rear bearing Seat preload; and the driving magnet and driven magnet are not easy to rust, and the magnetic preload between the two is non-contact preload, which avoids the fatigue failure problem of spring contact mechanical preload, thereby improving The service life and stability of the bearing are improved.
  • Fig. 1 is a structural schematic diagram of the present invention.
  • Fig. 2 is a structural schematic diagram of a magnetic steel pressing plate.
  • 3-5 are structural schematic diagrams of the volute.
  • FIG. 6 and Figure 7 are schematic structural views of the motor barrel.
  • FIG. 8 and Figure 9 are schematic structural views of the rear bearing seat.
  • Fig. 10 and Fig. 11 are structural schematic diagrams of the blower impeller.
  • a blower using magnetic preload the blower includes a motor barrel 1, a front bearing seat 2, a rear bearing seat 3, a front bearing 4, a rear bearing 5, a motor shaft 6, and a blower impeller 7.
  • the magnetic steel pressure plate 9 is fixed on the outer side of the rear bearing seat 3, and the inner side of the magnetic steel pressure plate 9 is fixedly provided with a driving magnetic steel 91; the outer side of the rear bearing seat 3 is fixedly provided with a driven magnetic steel 31, and the driving magnet
  • the steel 91 is relatively distributed with the driven magnet 31, and the opposite surface magnetic poles of the driving magnet 91 and the driven magnet 31 are the same; a partition 92 is arranged between the rear
  • the steel pressing plate 9 is compressed and fixed to the rear bearing seat 3, and the partition plate 92 is installed or removed according to the required magnetic force.
  • the magnetic steel platen 9 and the rear bearing housing 3 are respectively provided with relatively distributed driving magnets 91 and driven magnets 31, and since the opposite surface magnetic poles of the driving magnets 91 and driven magnets 31 are the same, thus Make repulsion between the two and then preload the rear bearing seat 3; and the driving magnet 91 and the driven magnet 31 are not easy to rust, and the magnetic preload between the two is a non-contact preload to avoid The fatigue failure problem of the spring contact mechanical preload is solved, thereby improving the service life and stability of the bearing.
  • spirally distributed copper pipes are arranged inside the volute 8, and the two ends of the copper pipes are respectively used to connect the water inlet device and the drainage device, and the copper pipes are used to cool the high-temperature gas in the inner cavity of the volute 8. Allow to cool. At the same time, the loss of gas pressure energy is reduced, and the efficiency and stability of the whole machine are improved.
  • the blower impeller 7 adopts the three-dimensional flow impeller of composite material.
  • the ternary flow impeller has smaller deformation, longer life, higher efficiency and more convenient processing than the traditional impeller.
  • the composite material that blast impeller 7 adopts is carbon fiber and polytetrafluoroethylene.
  • a fairing 71 is fixedly installed at the air inlet end of the blowing impeller 7 , and the fairing 71 is used to guide the air inhaled by the blowing impeller 7 to improve the blowing efficiency of the blower.
  • the front bearing housing 2 is provided with a sealing part 21, and the sealing part 21 is located on the back of the blower impeller 7 to prevent the high-pressure gas at the blower impeller 7 from leaking to the position of the front bearing 4; the motor barrel 1 , The front bearing seat 2 and the sealing part 21 are integrally formed. Integrated molding avoids the need for high machining accuracy to reduce assembly errors when individual parts are processed separately, and reduces the number of parts assembled; thereby reducing machining accuracy and improving assembly efficiency.
  • the rear bearing seat 3 includes a first rear bearing seat 31 and a second rear bearing seat 32, the first rear bearing seat 31 is provided with a first inner hole 33, and the second rear bearing seat 32
  • the outer wall is embedded in the first inner hole 33;
  • the second rear bearing seat 32 is provided with a second inner hole 34 and a sealing groove 35, and the rear bearing 5 is embedded in the second inner hole 34;
  • the sealing groove 35 is located in the second inner hole 35
  • the outer wall of the second rear bearing seat 32 and the sealing groove 35 are provided with a sealing ring, and the sealing ring is in contact with the sealing groove 35 and the first inner hole 33 respectively in the radial direction.
  • the second rear bearing seat 32 and the rear bearing 5 will move in the direction of the axial force, and at this moment, a larger frictional force will be generated between the second rear bearing seat 32 and the first rear bearing seat 31;
  • Putting a sealing ring between the second rear bearing seat 32 and the first rear bearing seat 31 can increase the damping of the second rear bearing seat 32 and reduce the influence of friction, thereby improving the life and stability of the rear bearing 5 and improving the overall performance. machine performance.
  • a water-cooling channel 11 is provided in the motor barrel 1 , and the water inlet and outlet ends of the water-cooling channel 11 are respectively connected with the water inlet device and the drainage device.
  • the water-cooling channel 11 is used to cool the inside of the blower.
  • the water cooling channel 11 is in a spiral shape to increase the cooling area.

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  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Development (AREA)
  • Mathematical Physics (AREA)
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  • Fuzzy Systems (AREA)
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Abstract

An air blower that is pre-tightened using a magnetic force. The air blower comprises an electric motor cylinder (1), a front bearing pedestal (2), a rear bearing pedestal (3), a front bearing (4), a rear bearing (5), an electric motor shaft (6), an air blower impeller (7), a volute (8), and a magnetic steel pressing plate (9), wherein the front bearing (4) and the rear bearing (5) are respectively located in the front bearing pedestal (2) and the rear bearing pedestal (3), and are respectively sleeved on outer walls of two ends of the electric motor shaft (6); the air blower impeller (7) is fixed at one end of the electric motor shaft (6) and located in the volute (8); the magnetic steel pressing plate (9) is fixed on the outer side of the rear bearing pedestal (3), and the inner side of the magnetic steel pressing plate (9) is fixedly provided with driving magnetic steel (91); and the outer side of the rear bearing pedestal (3) is fixedly provided with driven magnetic steel (31), the driving magnetic steel (91) and the driven magnetic steel (31) are distributed opposite each other, and the magnetic poles of opposite surfaces of the driving magnetic steel (91) and the driven magnetic steel (31) are the same.

Description

一种利用磁力预紧的鼓风机A Blower Using Magnetic Preload 技术领域technical field
本发明涉及鼓风机领域，尤其涉及一种利用磁力预紧的鼓风机。The invention relates to the field of air blowers, in particular to an air blower preloaded by magnetic force.
背景技术Background technique
离心风机是依靠输入的机械能，提高气体压力并排送气体的机械，它是一种从动的流体机械。离心风机广泛用于工厂、矿井、隧道、冷却塔、车辆、船舶和建筑物的通风、排尘和冷却；锅炉和工业炉窑的通风和引风；空气调节设备和家用电器设备中的冷却和通风；谷物的烘干和选送；风洞风源和气垫船的充气和推进等。The centrifugal fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induction of boilers and industrial furnaces; cooling and cooling of air conditioning equipment and household appliances Ventilation; drying and selection of grain; wind tunnel wind source and inflation and propulsion of hovercraft, etc.
中国发明专利申请（公开号CN101228357B，公开日：20101229）公开了离心鼓风机，包括叶轮，容纳叶轮轴的电力驱动器的转子和定子的外壳，和冷却系统。本发明的目标是就所需的冷却系统进一步改进这种离心鼓风机。为此，在外壳中设置用于第一冷却介质和第二冷却介质的路径，该第二冷却介质借助于该外壳由第一冷却介质来冷却，且所述路径由所述外壳的完好的材料壁相互分隔开。A Chinese invention patent application (publication number CN101228357B, publication date: 20101229) discloses a centrifugal blower, including an impeller, a casing housing the rotor and stator of the electric drive for the impeller shaft, and a cooling system. The object of the present invention is to further improve such a centrifugal blower with regard to the required cooling system. For this purpose, paths are provided in the housing for a first cooling medium and a second cooling medium, which is cooled by means of the housing by the first cooling medium, and the paths are formed by the intact material of the housing The walls are separated from each other.
技术问题technical problem
现有技术存在以下不足：鼓风机在工作时由于鼓风叶轮的背盘高压气体会产生很大的轴向力进而带动电机轴沿着轴向移动，如果没有预紧，后轴承端面与电机轴轴肩之间会产生缝隙进而造成后轴承很容易损坏；一般情况下，在后轴承座外侧和压板内侧之间设置有波形弹簧来产生预紧力；而波形弹簧材料为65Mn容易生锈，并且依赖这种接触式机械预紧很容易产生疲劳失效，降低了轴承的使用寿命和稳定性。The existing technology has the following disadvantages: when the blower is working, the high-pressure gas on the back plate of the blower impeller will generate a large axial force and then drive the motor shaft to move axially. If there is no preload, the end surface of the rear bearing and the motor shaft will There will be a gap between the shoulders, which will cause the rear bearing to be easily damaged; generally, a wave spring is arranged between the outer side of the rear bearing seat and the inner side of the pressure plate to generate pre-tightening force; the material of the wave spring is 65Mn, which is easy to rust and depends on This kind of contact mechanical preload is prone to fatigue failure, which reduces the service life and stability of the bearing.
技术解决方案technical solution
本发明的目的是：针对上述问题，提出在磁钢压板和后轴承座分别设置驱动磁钢与从动磁钢，利用磁力产生非接触式预紧力；不会产生弹簧生锈的情况，同时也避免了接触式机械预紧的疲劳失效问题，从而提高轴承的使用寿命和稳定性的一种利用磁力预紧的鼓风机。The purpose of the present invention is: in view of the above problems, it is proposed to respectively set the driving magnet and the driven magnet on the magnet platen and the rear bearing seat, and utilize the magnetic force to generate non-contact pretightening force; It also avoids the fatigue failure problem of contact mechanical preload, thereby improving the service life and stability of the bearing, which is a blower using magnetic preload.
为了实现上述的目的，本发明采用了以下的技术方案：In order to achieve the above object, the present invention adopts the following technical solutions:
一种利用磁力预紧的鼓风机，该鼓风机包括电机筒、前轴承座、后轴承座、前轴承、后轴承、电机轴、鼓风叶轮、蜗壳和磁钢压板；前轴承和后轴承分别位于前轴承座和后轴承座内并且分别套设在电机轴两端的外壁，鼓风叶轮固定在电机轴一端并且位于蜗壳内；磁钢压板固定在后轴承座外侧，磁钢压板内侧固定设置有驱动磁钢；后轴承座外侧固定设置有从动磁钢，驱动磁钢与从动磁钢相对分布，并且驱动磁钢与从动磁钢的相对表面磁极相同；后轴承座和磁钢压板之间设置有隔板，隔板被磁钢压板压紧固定至后轴承座上，并且根据需要的磁力大小将隔板安装或者拆除。A blower preloaded by magnetic force, the blower includes a motor barrel, a front bearing seat, a rear bearing seat, a front bearing, a rear bearing, a motor shaft, a blower impeller, a volute and a magnetic steel pressure plate; the front bearing and the rear bearing are respectively located on The front bearing seat and the rear bearing seat are respectively sleeved on the outer walls of the two ends of the motor shaft. The blower impeller is fixed on one end of the motor shaft and is located in the volute; the magnetic steel pressure plate is fixed on the outer side of the rear bearing seat, and the inner side of the magnetic steel pressure plate is fixed. Drive magnets; the outer side of the rear bearing seat is fixed with driven magnets, the drive magnets and the driven magnets are relatively distributed, and the opposite surface magnetic poles of the drive magnets and the driven magnets are the same; the rear bearing seat and the magnet plate A partition is arranged between them, and the partition is pressed and fixed to the rear bearing seat by a magnetic steel pressure plate, and the partition is installed or removed according to the required magnetic force.
作为优选，蜗壳内设置有螺旋分布的铜管，铜管两端分别用于进水装置和排水装置相连接，铜管用于对蜗壳内腔体的高温气体进行冷却。Preferably, spirally distributed copper tubes are arranged inside the volute, and the two ends of the copper tubes are respectively used for connecting the water inlet device and the drainage device, and the copper tubes are used for cooling the high-temperature gas in the inner cavity of the volute.
作为优选，鼓风叶轮采用复合材料的三元流叶轮。Preferably, the blower impeller adopts a three-dimensional flow impeller made of composite material.
作为优选，鼓风叶轮采用的复合材料为碳纤维与聚四氟乙烯。Preferably, the composite material used for the blower impeller is carbon fiber and polytetrafluoroethylene.
作为优选，鼓风叶轮进风端固定设置有整流罩，整流罩用于对鼓风叶轮吸入的空气进行导向，提高鼓风机的鼓风效率。Preferably, a fairing is fixedly arranged at the air inlet end of the blowing impeller, and the fairing is used to guide the air inhaled by the blowing impeller so as to improve the blowing efficiency of the blower.
作为优选，前轴承座设置有密封部，密封部位于鼓风叶轮背部，用于防止鼓风叶轮处的高压气体泄漏至前轴承位置；电机筒、前轴承座和密封部为一体化成型。Preferably, the front bearing seat is provided with a sealing part, and the sealing part is located on the back of the blower impeller to prevent the high-pressure gas at the blower impeller from leaking to the front bearing position; the motor barrel, the front bearing seat and the sealing part are integrally formed.
作为优选，后轴承座包括第一后轴承座和第二后轴承座，第一后轴承座设置有第一内孔，第二后轴承座外壁嵌设在第一内孔内；第二后轴承座设置有第二内孔和密封凹槽，后轴承嵌设在第二内孔内；密封凹槽位于第二后轴承座外壁，密封凹槽内设置有密封圈，并且密封圈在径向分别与密封凹槽和第一内孔相接触。As preferably, the rear bearing seat includes a first rear bearing seat and a second rear bearing seat, the first rear bearing seat is provided with a first inner hole, and the outer wall of the second rear bearing seat is embedded in the first inner hole; the second rear bearing seat The seat is provided with a second inner hole and a sealing groove, and the rear bearing is embedded in the second inner hole; the sealing groove is located on the outer wall of the second rear bearing seat, and a sealing ring is arranged in the sealing groove, and the sealing rings are arranged separately in the radial direction. In contact with the sealing groove and the first bore.
作为优选，电机筒内设置有水冷通道，水冷通道进水端和出水端分别与进水装置和排水装置相连通，水冷通道用于对鼓风机内部进行冷却。Preferably, a water cooling channel is provided in the motor barrel, and the water inlet end and the water outlet end of the water cooling channel are respectively connected with the water inlet device and the drainage device, and the water cooling channel is used for cooling the inside of the blower.
作为优选，水冷通道为螺旋形状。Preferably, the water cooling channel is in a spiral shape.
有益效果Beneficial effect
本发明采用上述技术方案的一种利用磁力预紧的鼓风机的优点是：The advantage of a kind of air blower that utilizes magnetic force preloading that the present invention adopts above-mentioned technical scheme is:
磁钢压板和后轴承座分别设置有相对分布的驱动磁钢与从动磁钢，并且由于驱动磁钢与从动磁钢的相对表面磁极相同，从而使得两者之间产生斥力进而对后轴承座预紧；而驱动磁钢与从动磁钢都不容易生锈，并且两者之间的磁力预紧为非接触式预紧，避免了弹簧接触式机械预紧的疲劳失效问题，从而提高了轴承的使用寿命和稳定性。The magnetic steel pressure plate and the rear bearing seat are respectively provided with relatively distributed driving magnets and driven magnets, and since the opposite surface magnetic poles of the driving magnets and the driven magnets are the same, a repulsive force is generated between the two and the rear bearing Seat preload; and the driving magnet and driven magnet are not easy to rust, and the magnetic preload between the two is non-contact preload, which avoids the fatigue failure problem of spring contact mechanical preload, thereby improving The service life and stability of the bearing are improved.
附图说明Description of drawings
图1为本发明的结构示意图。Fig. 1 is a structural schematic diagram of the present invention.
图2为磁钢压板的结构示意图。Fig. 2 is a structural schematic diagram of a magnetic steel pressing plate.
图3-5为蜗壳的结构示意图。3-5 are structural schematic diagrams of the volute.
图6、图7为电机筒的结构示意图。Figure 6 and Figure 7 are schematic structural views of the motor barrel.
图8、图9为后轴承座的结构示意图。Figure 8 and Figure 9 are schematic structural views of the rear bearing seat.
图10、图11为鼓风叶轮的结构示意图。Fig. 10 and Fig. 11 are structural schematic diagrams of the blower impeller.
80-铜管、90-密封圈、F1-第二后轴承座受到的摩擦力方向、F2-电机轴受到的轴向力方向、F3-磁力方向。80-copper pipe, 90-sealing ring, F1-the direction of the frictional force received by the second rear bearing seat, F2-the direction of the axial force received by the motor shaft, F3-the direction of the magnetic force.
本发明的最佳实施方式BEST MODE FOR CARRYING OUT THE INVENTION
如图1、图2所示的一种利用磁力预紧的鼓风机，该鼓风机包括电机筒1、前轴承座2、后轴承座3、前轴承4、后轴承5、电机轴6、鼓风叶轮7、蜗壳8和磁钢压板9；前轴承4和后轴承5分别位于前轴承座2和后轴承座3内并且分别套设在电机轴6两端的外壁，鼓风叶轮7固定在电机轴6一端并且位于蜗壳8内；磁钢压板9固定在后轴承座3外侧，磁钢压板9内侧固定设置有驱动磁钢91；后轴承座3外侧固定设置有从动磁钢31，驱动磁钢91与从动磁钢31相对分布，并且驱动磁钢91与从动磁钢31的相对表面磁极相同；后轴承座3和磁钢压板9之间设置有隔板92，隔板92被磁钢压板9压紧固定至后轴承座3上，并且根据需要的磁力大小将隔板92安装或者拆除。此种方式中，磁钢压板9和后轴承座3分别设置有相对分布的驱动磁钢91与从动磁钢31，并且由于驱动磁钢91与从动磁钢31的相对表面磁极相同，从而使得两者之间产生斥力进而对后轴承座3预紧；而驱动磁钢91与从动磁钢31都不容易生锈，并且两者之间的磁力预紧为非接触式预紧，避免了弹簧接触式机械预紧的疲劳失效问题，从而提高了轴承的使用寿命和稳定性。As shown in Figure 1 and Figure 2, a blower using magnetic preload, the blower includes a motor barrel 1, a front bearing seat 2, a rear bearing seat 3, a front bearing 4, a rear bearing 5, a motor shaft 6, and a blower impeller 7. The volute 8 and the magnetic steel pressure plate 9; the front bearing 4 and the rear bearing 5 are respectively located in the front bearing seat 2 and the rear bearing seat 3 and are respectively sleeved on the outer walls of the two ends of the motor shaft 6, and the blower impeller 7 is fixed on the motor shaft 6 and one end is located in the volute 8; the magnetic steel pressure plate 9 is fixed on the outer side of the rear bearing seat 3, and the inner side of the magnetic steel pressure plate 9 is fixedly provided with a driving magnetic steel 91; the outer side of the rear bearing seat 3 is fixedly provided with a driven magnetic steel 31, and the driving magnet The steel 91 is relatively distributed with the driven magnet 31, and the opposite surface magnetic poles of the driving magnet 91 and the driven magnet 31 are the same; a partition 92 is arranged between the rear bearing seat 3 and the magnetic steel pressure plate 9, and the partition 92 is magnetized. The steel pressing plate 9 is compressed and fixed to the rear bearing seat 3, and the partition plate 92 is installed or removed according to the required magnetic force. In this way, the magnetic steel platen 9 and the rear bearing housing 3 are respectively provided with relatively distributed driving magnets 91 and driven magnets 31, and since the opposite surface magnetic poles of the driving magnets 91 and driven magnets 31 are the same, thus Make repulsion between the two and then preload the rear bearing seat 3; and the driving magnet 91 and the driven magnet 31 are not easy to rust, and the magnetic preload between the two is a non-contact preload to avoid The fatigue failure problem of the spring contact mechanical preload is solved, thereby improving the service life and stability of the bearing.
如图3-5所示，蜗壳8内设置有螺旋分布的铜管，铜管两端分别用于进水装置和排水装置相连接，铜管用于对蜗壳8内腔体的高温气体进行冷却。同时，减少气体压力能的损耗,提高整机效率与稳定性。As shown in Figure 3-5, spirally distributed copper pipes are arranged inside the volute 8, and the two ends of the copper pipes are respectively used to connect the water inlet device and the drainage device, and the copper pipes are used to cool the high-temperature gas in the inner cavity of the volute 8. Allow to cool. At the same time, the loss of gas pressure energy is reduced, and the efficiency and stability of the whole machine are improved.
鼓风叶轮7采用复合材料的三元流叶轮。三元流叶轮比传统叶轮变形更小，寿命更长，效率更高，加工更方便。鼓风叶轮7采用的复合材料为碳纤维与聚四氟乙烯。The blower impeller 7 adopts the three-dimensional flow impeller of composite material. The ternary flow impeller has smaller deformation, longer life, higher efficiency and more convenient processing than the traditional impeller. The composite material that blast impeller 7 adopts is carbon fiber and polytetrafluoroethylene.
如图1所示，鼓风叶轮7进风端固定设置有整流罩71，整流罩71用于对鼓风叶轮7吸入的空气进行导向，提高鼓风机的鼓风效率。As shown in FIG. 1 , a fairing 71 is fixedly installed at the air inlet end of the blowing impeller 7 , and the fairing 71 is used to guide the air inhaled by the blowing impeller 7 to improve the blowing efficiency of the blower.
如图6、图7所示，前轴承座2设置有密封部21，密封部21位于鼓风叶轮7背部，用于防止鼓风叶轮7处的高压气体泄漏至前轴承4位置；电机筒1、前轴承座2和密封部21为一体化成型。一体化成型避免了各个零件分开加工时需要较高的加工精度以降低装配误差的情况，并且减少了零件的装配数量；从而降低了加工精度，提高了装配效率。As shown in Fig. 6 and Fig. 7, the front bearing housing 2 is provided with a sealing part 21, and the sealing part 21 is located on the back of the blower impeller 7 to prevent the high-pressure gas at the blower impeller 7 from leaking to the position of the front bearing 4; the motor barrel 1 , The front bearing seat 2 and the sealing part 21 are integrally formed. Integrated molding avoids the need for high machining accuracy to reduce assembly errors when individual parts are processed separately, and reduces the number of parts assembled; thereby reducing machining accuracy and improving assembly efficiency.
如图1、图8、图9所示，后轴承座3包括第一后轴承座31和第二后轴承座32，第一后轴承座31设置有第一内孔33，第二后轴承座32外壁嵌设在第一内孔33内；第二后轴承座32设置有第二内孔34和密封凹槽35，后轴承5嵌设在第二内孔34内；密封凹槽35位于第二后轴承座32外壁，密封凹槽35内设置有密封圈，并且密封圈在径向分别与密封凹槽35和第一内孔33相接触。在磁力产生后，第二后轴承座32与后轴承5会往轴向力方向移动，此时第二后轴承座32会与第一后轴承座31之间产生较大的摩擦力；因此在第二后轴承座32与第一后轴承座31之间放入密封圈，可增加第二后轴承座32的阻尼并且减小摩擦力的影响，进而提高后轴承5的寿命与稳定，提高整机使用性能。As shown in Fig. 1, Fig. 8, and Fig. 9, the rear bearing seat 3 includes a first rear bearing seat 31 and a second rear bearing seat 32, the first rear bearing seat 31 is provided with a first inner hole 33, and the second rear bearing seat 32 The outer wall is embedded in the first inner hole 33; the second rear bearing seat 32 is provided with a second inner hole 34 and a sealing groove 35, and the rear bearing 5 is embedded in the second inner hole 34; the sealing groove 35 is located in the second inner hole 35 The outer wall of the second rear bearing seat 32 and the sealing groove 35 are provided with a sealing ring, and the sealing ring is in contact with the sealing groove 35 and the first inner hole 33 respectively in the radial direction. After the magnetic force is generated, the second rear bearing seat 32 and the rear bearing 5 will move in the direction of the axial force, and at this moment, a larger frictional force will be generated between the second rear bearing seat 32 and the first rear bearing seat 31; Putting a sealing ring between the second rear bearing seat 32 and the first rear bearing seat 31 can increase the damping of the second rear bearing seat 32 and reduce the influence of friction, thereby improving the life and stability of the rear bearing 5 and improving the overall performance. machine performance.
如图1所示，电机筒1内设置有水冷通道11，水冷通道11进水端和出水端分别与进水装置和排水装置相连通，水冷通道11用于对鼓风机内部进行冷却。水冷通道11为螺旋形状以增加冷却面积。As shown in FIG. 1 , a water-cooling channel 11 is provided in the motor barrel 1 , and the water inlet and outlet ends of the water-cooling channel 11 are respectively connected with the water inlet device and the drainage device. The water-cooling channel 11 is used to cool the inside of the blower. The water cooling channel 11 is in a spiral shape to increase the cooling area.

Claims (9)

  1. 一种利用磁力预紧的鼓风机，其特征在于，该鼓风机包括电机筒（1）、前轴承座（2）、后轴承座（3）、前轴承（4）、后轴承（5）、电机轴（6）、鼓风叶轮（7）、蜗壳（8）和磁钢压板（9）；前轴承（4）和后轴承（5）分别位于前轴承座（2）和后轴承座（3）内并且分别套设在电机轴（6）两端的外壁，鼓风叶轮（7）固定在电机轴（6）一端并且位于蜗壳（8）内；磁钢压板（9）固定在后轴承座（3）外侧，磁钢压板（9）内侧固定设置有驱动磁钢（91）；后轴承座（3）外侧固定设置有从动磁钢（31），驱动磁钢（91）与从动磁钢（31）相对分布，并且驱动磁钢（91）与从动磁钢（31）的相对表面磁极相同；后轴承座（3）和磁钢压板（9）之间设置有隔板（92），隔板（92）被磁钢压板（9）压紧固定至后轴承座（3）上，并且根据需要的磁力大小将隔板（92）安装或者拆除。A blower preloaded by magnetic force, characterized in that the blower includes a motor barrel (1), a front bearing seat (2), a rear bearing seat (3), a front bearing (4), a rear bearing (5), a motor shaft (6), blower impeller (7), volute (8) and magnetic steel pressure plate (9); the front bearing (4) and the rear bearing (5) are respectively located in the front bearing housing (2) and the rear bearing housing (3) and are respectively sleeved on the outer walls of both ends of the motor shaft (6), the blower impeller (7) is fixed on one end of the motor shaft (6) and is located in the volute (8); the magnetic steel pressure plate (9) is fixed on the rear bearing seat ( 3) Outer side, the inner side of the magnetic steel pressure plate (9) is fixed with a driving magnet (91); the outer side of the rear bearing seat (3) is fixed with a driven magnet (31), and the driving magnet (91) and the driven magnet (31) are relatively distributed, and the opposite surface magnetic poles of the driving magnet (91) and the driven magnet (31) are the same; a partition (92) is arranged between the rear bearing seat (3) and the magnet plate (9), The partition (92) is pressed and fixed to the rear bearing seat (3) by the magnetic steel pressure plate (9), and the partition (92) is installed or removed according to the required magnetic force.
  2. 根据权利要求1所述一种利用磁力预紧的鼓风机，其特征在于，蜗壳（8）内设置有螺旋分布的铜管，铜管两端分别用于进水装置和排水装置相连接，铜管用于对蜗壳（8）内腔体的高温气体进行冷却。According to claim 1, a magnetically preloaded blower is characterized in that spirally distributed copper tubes are arranged inside the volute (8), and the two ends of the copper tubes are used to connect the water inlet device and the drainage device respectively, and the copper tubes The tube is used to cool the high-temperature gas in the inner cavity of the volute (8).
  3. 根据权利要求1所述一种利用磁力预紧的鼓风机，其特征在于，鼓风叶轮（7）采用复合材料的三元流叶轮。According to claim 1, a magnetically preloaded blower is characterized in that the blower impeller (7) is a three-dimensional flow impeller made of composite material.
  4. 根据权利要求3所述一种利用磁力预紧的鼓风机，其特征在于，鼓风叶轮（7）采用的复合材料为碳纤维与聚四氟乙烯。According to claim 3, the blower using magnetic preload is characterized in that the composite material used for the blower impeller (7) is carbon fiber and polytetrafluoroethylene.
  5. 根据权利要求1所述一种利用磁力预紧的鼓风机，其特征在于，鼓风叶轮（7）进风端固定设置有整流罩（71），整流罩（71）用于对鼓风叶轮（7）吸入的空气进行导向，提高鼓风机的鼓风效率。According to claim 1, a blower utilizing magnetic force preloading is characterized in that a fairing (71) is fixedly arranged at the air inlet end of the blowing impeller (7), and the fairing (71) is used for blowing the blowing impeller (7). ) to guide the inhaled air to improve the blowing efficiency of the blower.
  6. 根据权利要求1所述一种利用磁力预紧的鼓风机，其特征在于，前轴承座（2）设置有密封部（21），密封部（21）位于鼓风叶轮（7）背部，用于防止鼓风叶轮（7）处的高压气体泄漏至前轴承（4）位置；电机筒（1）、前轴承座（2）和密封部（21）为一体化成型。According to claim 1, the blower utilizing magnetic force preload is characterized in that the front bearing seat (2) is provided with a sealing part (21), and the sealing part (21) is located on the back of the blower impeller (7) to prevent The high-pressure gas at the blower impeller (7) leaks to the position of the front bearing (4); the motor barrel (1), the front bearing seat (2) and the sealing part (21) are integrally formed.
  7. 根据权利要求1所述一种利用磁力预紧的鼓风机，其特征在于，后轴承座（3）包括第一后轴承座（31）和第二后轴承座（32），第一后轴承座（31）设置有第一内孔（33），第二后轴承座（32）外壁嵌设在第一内孔（33）内；第二后轴承座（32）设置有第二内孔（34）和密封凹槽（35），后轴承（5）嵌设在第二内孔（34）内；密封凹槽（35）位于第二后轴承座（32）外壁，密封凹槽（35）内设置有密封圈，并且密封圈在径向分别与密封凹槽（35）和第一内孔（33）相接触。According to claim 1, a blower using magnetic preload, characterized in that the rear bearing seat (3) includes a first rear bearing seat (31) and a second rear bearing seat (32), and the first rear bearing seat ( 31) There is a first inner hole (33), and the outer wall of the second rear bearing seat (32) is embedded in the first inner hole (33); the second rear bearing seat (32) is provided with a second inner hole (34) and the sealing groove (35), the rear bearing (5) is embedded in the second inner hole (34); the sealing groove (35) is located on the outer wall of the second rear bearing seat (32), and the sealing groove (35) is set There is a sealing ring, and the sealing ring is in contact with the sealing groove (35) and the first inner hole (33) respectively in the radial direction.
  8. 根据权利要求1所述一种利用磁力预紧的鼓风机，其特征在于，电机筒（1）内设置有水冷通道（11），水冷通道（11）进水端和出水端分别与进水装置和排水装置相连通，水冷通道（11）用于对鼓风机内部进行冷却。According to claim 1, a magnetically preloaded blower is characterized in that a water-cooling channel (11) is arranged inside the motor barrel (1), and the water inlet and outlet ends of the water-cooling channel (11) are respectively connected to the water inlet device and the water outlet. The drainage devices are connected, and the water cooling channel (11) is used to cool the inside of the blower.
  9. 根据权利要求8所述一种利用磁力预紧的鼓风机，其特征在于，水冷通道（11）为螺旋形状。The blower utilizing magnetic preload according to claim 8, characterized in that the water-cooling channel (11) is in a spiral shape.
PCT/CN2021/127219 2021-08-10 2021-10-29 Air blower that is pre-tightened using magnetic force WO2023019733A1 (en)

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