WO2018107560A1 - 一种微型水力悬浮机械泵 - Google Patents

一种微型水力悬浮机械泵 Download PDF

Info

Publication number
WO2018107560A1
WO2018107560A1 PCT/CN2017/071675 CN2017071675W WO2018107560A1 WO 2018107560 A1 WO2018107560 A1 WO 2018107560A1 CN 2017071675 W CN2017071675 W CN 2017071675W WO 2018107560 A1 WO2018107560 A1 WO 2018107560A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
water
volute
spiral groove
magnetic steel
Prior art date
Application number
PCT/CN2017/071675
Other languages
English (en)
French (fr)
Inventor
罗小兵
刘发龙
段斌
吴晗
胡锦炎
余兴建
Original Assignee
华中科技大学
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 华中科技大学 filed Critical 华中科技大学
Priority to US15/575,288 priority Critical patent/US10495093B2/en
Publication of WO2018107560A1 publication Critical patent/WO2018107560A1/zh

Links

Images

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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor 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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/0633—Details of the bearings
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/041—Axial thrust balancing
    • F04D29/0413—Axial thrust balancing hydrostatic; hydrodynamic thrust bearings
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/047—Bearings hydrostatic; hydrodynamic
    • F04D29/0473—Bearings hydrostatic; hydrodynamic for radial 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/12—Shaft sealings using sealing-rings
    • F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/128—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/043—Shafts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
    • H02K2205/03—Machines characterised by thrust bearings

Definitions

  • the invention belongs to the field of mechanical pumps, and more particularly to a miniature hydraulic suspension mechanical pump.
  • micro-mechanical pumps are widely used in drug transport systems, electronic device cooling systems, thermal control systems, and micro-chemical analysis systems.
  • micropumps At present, reliability has become a constraint factor for micropumps.
  • the shafting is like the backbone of the micro pump, which is especially important to ensure the reliability of the whole machine.
  • the stable and robust shafting design is the only means to extend the life of the machine.
  • Bearings used in micromechanical pumps are now classified into mechanical contact bearings and non-contact bearings. Mechanical contact bearings have severely constrained the service life of micropumps due to bearing wear. The non-contact bearing realizes the contactless operation of the micro pump, which can greatly improve the reliability and service life of the micro pump.
  • the main means of shaft suspension technology used in non-contact bearings are: active control suspension, permanent magnet suspension, and hydraulic suspension.
  • active control of suspension The basic principle of active control of suspension is that the position sensor captures the dynamic position of the rotor, and the main control electromagnet generates a dynamic magnetic field to limit the rotor to the axis.
  • the advantages are high control precision and large load range, but the control circuit is complicated, the price is high, and the additional consumption is increased.
  • Permanent magnet suspension utilizes the repulsive nature of permanent magnets to limit rotor freedom. The structure is simple, reliable, and the assembly requirements are low, but the full degree of freedom suspension cannot be achieved, and the external force limitation needs to be introduced.
  • the hydraulic suspension utilizes the high-speed rotation of the rotor to produce a high-pressure liquid film on the suspension surface to support the suspension of the rotor.
  • the structure is stable and reliable, and the size is small, but the processing and installation precision are strict, and it is difficult to process and install.
  • the present invention provides a miniature hydraulic suspension mechanical pump, which can realize the non-contact operation of the magnetic steel rotor, can greatly reduce the wear of the magnetic steel rotor, and improve the life of the micro hydraulic suspension mechanical pump. .
  • a micro hydraulic suspension mechanical pump which comprises a volute, an upper end cover, an impeller, a brushless motor, a waterproof sleeve and a water-lubricated spiral groove thrust bearing, wherein
  • the volute is provided with a water inlet passage and a water outlet passage, the inner space of the volute is used as a pump chamber, and the water inlet passage and the water outlet passage are respectively communicated with the pump chamber;
  • the brushless motor includes a motor housing, a coil, a magnetic steel rotor, a waterproof sleeve, a rotor sleeve, and a rotor shaft, the motor housing is fixedly coupled to the volute and the motor housing receives the upper end cover,
  • the coil is mounted on a side wall of the motor casing and the inner wall thereof is provided with the waterproof sleeve for protecting the coil, and the upper end cover is provided with an intermediate water inlet hole communicating with the pump chamber for allowing water to flow in.
  • the magnetic steel rotor is located in the motor casing and the magnetic steel rotor is fixedly mounted on the rotor shaft, and the rotor sleeve is sleeved on the outer side of the magnetic steel rotor, An upper end of the rotor shaft is fixedly connected to the impeller through the upper end cover, and the impeller is located in the pump chamber, and a first gap is formed between an inner side wall of the magnet steel rotor and an outer side surface of the rotor shaft a first water flow channel, the first water flow channel is in communication with the pump cavity, a second gap exists between an outer sidewall of the rotor sleeve and an inner sidewall of the motor housing as a second water flow channel, the second Water circulation Communicating with the intermediate water inlet hole;
  • a set of the water-lubricated spiral groove thrust bearings are respectively disposed above and below the magnetic steel rotor, and each of the water-lubricated spiral groove thrust bearings comprises a static ring and a moving ring with a screw screw, a moving ring of a water-lubricated spiral groove thrust bearing located above the magnetic steel rotor is disposed on a top end surface of the magnetic steel rotor and a static ring is disposed at a bottom of the upper end cover, above the magnetic steel rotor The moving ring of the water-lubricated spiral groove thrust bearing is disposed on the bottom end surface of the magnetic steel rotor and its stationary ring is disposed on the inner bottom surface of the waterproof sleeve.
  • the intermediate water inlet holes are provided in plurality and arranged circumferentially.
  • both the stationary ring and the moving ring are made of cemented carbide.
  • the motor housing is provided with a positioning boss
  • the volute is provided with a positioning groove that cooperates with the positioning boss for positioning the impeller in a proper position in the pump chamber.
  • a liquid film can be formed between the static ring and the moving ring to suspend the magnetic steel rotor, and a liquid film can be formed between the outer wall of the rotor sleeve and the inner wall of the waterproof sleeve, and magnetic can be realized.
  • Contactless suspension of steel rotors the coil of the brushless motor is completely isolated from the magnetic steel rotor by the waterproof sleeve, thereby ensuring the waterproofness of the coil of the brushless motor, and the wear of the magnetic steel rotor can be greatly reduced due to the contactless suspension of the magnetic steel rotor. The life of a miniature hydraulic suspension mechanical pump.
  • Figure 1 is a schematic view of the structure of the present invention
  • Figure 2 is a schematic cross-sectional view of the present invention
  • Figure 3 is a schematic structural view of a rotor shaft of the present invention.
  • Figure 4 is a schematic view showing the structure of a volute according to the present invention.
  • Figure 5 is a schematic view showing the structure of the upper end cover of the present invention.
  • Figure 6 is a schematic structural view of a moving ring of the present invention.
  • Figure 7 is a schematic view showing the structure of a static ring in the present invention.
  • a micro hydraulic suspension mechanical pump comprising: a volute 1, an upper end cover 3, an impeller 2, a brushless motor, a waterproof sleeve 6, and a water-lubricated spiral groove thrust bearing, wherein
  • the volute 1 is provided with a water inlet passage and a water outlet passage, the internal space of the volute 1 serves as a pump chamber, and the water inlet passage and the water outlet passage respectively communicate with the pump chamber;
  • the brushless motor includes a motor housing 11, a coil 10, a magnetic steel rotor 9, a waterproof sleeve 6, a rotor sleeve 7, and a rotor shaft 8, the motor housing 11 being fixedly coupled to the volute 1 and the motor housing
  • the upper end cover 3 is received.
  • the volute 1 has a connecting through hole.
  • the bolt is threadedly connected to the upper portion of the motor casing 11 through the connecting through hole, and the coil is mounted on the side wall of the motor casing 11.
  • 10 and its inner wall is provided with the waterproof sleeve 6 for protecting the coil 10
  • the upper end cover 3 is provided with an intermediate water inlet hole 3a communicating with the pump chamber for allowing water to flow into the waterproof sleeve 6.
  • the upper end cap 3 rests on the waterproof sleeve 6, the magnet steel rotor 9 is located in the motor housing 11 and the magnet steel rotor 9 is fixedly mounted on the rotor shaft 8,
  • the rotor sleeve 7 is sleeved on the outer side of the magnet steel rotor 9, the upper end of the rotor shaft 8 is fixedly connected to the impeller 2 through the upper end cover 3, and the impeller 2 is located in the pump chamber a first gap between the inner side wall of the magnet steel rotor 9 and the outer side surface of the rotor shaft 8 a first water flow passage, the first water flow passage is in communication with the pump chamber, and a second gap exists between the outer side wall of the rotor sleeve 7 and the inner side wall of the motor casing 11 as a second water flow passage.
  • the second water flow passage is in communication with the intermediate water inlet hole 3a;
  • a set of the water-lubricated spiral groove thrust bearings are respectively disposed above and below the magnetic steel rotor 9, and each of the water-lubricated spiral groove thrust bearings comprises a static ring 4 and a moving ring 5 with a screw screw, wherein A moving ring 5 of a water-lubricated spiral groove thrust bearing located above the magnetic steel rotor 9 is disposed on a top end surface of the magnetic steel rotor 9 and a stationary ring 4 is disposed at a bottom of the upper end cover 3 at the magnetic a moving ring 5 of a water-lubricated spiral groove thrust bearing above the steel rotor 9 is disposed on the magnetic steel The bottom end face of the rotor 9 and its stationary ring 4 are disposed on the inner bottom surface of the waterproof sleeve 6.
  • the intermediate water inlet holes 3a are provided in plurality and they are circumferentially disposed, and the static ring 4 and the moving ring 5 are both made of cemented carbide, and the upper end cover 3 is provided with positioning bosses,
  • the volute 1 is provided with a positioning groove that cooperates with the positioning boss for positioning the impeller 2 in a proper position in the pump chamber.
  • the inner space formed by the motor housing 11 and the upper end cover 3 disposed thereon can accommodate the magnetic steel rotor 9, and the inlet passage 101 and the outlet passage 102 are respectively disposed on the volute 1 and the pump inside the volute 1
  • the chambers are in communication such that fluid can be driven by the impeller 2, from the inlet passage 101 toward the outlet passage 102 and pumped out through the outlet line, and most of the fluid entering the mechanical pump is primarily discharged in this manner, a small portion Enter the inside of the motor casing 11 to remove heat.
  • the rotor shaft 8 provides power for the drive of the impeller 2, and the moving ring 5 is constructed of cemented carbide to support the requirements of longer working hours.
  • the moving ring 5 is constructed of cemented carbide to support the requirements of longer working hours.
  • a waterproof sleeve 6 is disposed between the stator coil 10 and the rotor sleeve 7, and the coil 10 is isolated from the magnetic steel rotor 9, thereby providing a waterproof effect to the stator coil 10. Due to the small size of the micropump, the conventional impeller installation method cannot be used.
  • the impeller 2 and the output rotor shaft 8 of the magnetic steel rotor 9 have an interference fit and are fixed by an adhesive, and the rotor shaft 8 can be processed by a cylindrical shaft, and the outer side is processed. A part is cut away to form a gap with the magnet steel rotor 9.
  • the motor housing 11 is also a component of the pump body, which together with the volute 1 constitutes the pump chamber of the micropump. A positioning boss is disposed on the contact end surface of the motor casing 11 in contact with the volute 1.
  • the contact end surface of the volute 1 and the motor protection casing 11 is correspondingly provided with a positioning groove, and the two are matched to ensure the installation of the impeller 2
  • the impeller 2 is concentric with the pump cavity to prevent mechanical interference and adverse effects on performance caused by the eccentric mounting of the impeller 2.
  • the motor housing 11 is provided with a threaded hole, and the volute 1 has a through hole at a corresponding position, and the two are connected by screws.
  • the moving ring 5 is engraved with a spiral groove 5a for forming a liquid film between the moving ring 5 and the stationary ring 4, and the outer side wall of the rotor sleeve 7 and the inner side wall of the waterproof sleeve 6 can form a liquid film to provide a magnetic steel rotor. 9 suspension The required support.
  • the moving ring 5 and the stationary ring 4 are preferably made of cemented carbide to increase the service life.
  • three intermediate water inlet holes 3a are opened in the upper end cover 3, so that a part of the water enters the gap between the moving ring 5 and the stationary ring 4 at the upper end of the magnetic steel rotor 9, and A part of the water enters the gap between the rotor sleeve 7 and the waterproof sleeve 6 from the volute 1 and flows back into the volute 1 through the flow passage formed by the rotor shaft 8 and the magnetic steel rotor 9
  • the invention is designed to form a water flow passage through the structure of the intermediate water inlet hole 3a and the rotor shaft 8 which are opened on the upper end cover 3, and can supply sufficient flow to the radial liquid film bearing and take away the heat generated by the motor.
  • the design of the waterproof sleeve 6 completely isolates the stator assembly of the brushless motor from the rotor assembly, thereby ensuring the waterproofness of the brushless motor stator assembly. Due to the contactless suspension of the rotor, the wear of the rotor can be greatly reduced and the life of the micro mechanical pump can be improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种微型水力悬浮机械泵，包括蜗壳（1）、上端盖（3）、叶轮（2）、无刷电机、防水套筒（6）和水润滑螺旋槽推力轴承，蜗壳（1）上设置有进水通道和出水通道，上端盖（3）上设置有中间进水孔（3a）；所述无刷电机包括电机外壳（11）、线圈（10）、磁钢转子（9）、转子套筒（7）和转子转轴（8）；所述磁钢转子（9）的上方和下方分别设置一组所述水润滑螺旋槽推力轴承，每组所述水润滑螺旋槽推力轴承均包括静环（4）和带有螺旋螺的动环（5）。该泵工作时，静环（4）和动环（5）之间能形成液膜来使磁钢转子悬浮，而转子套筒的外壁和防水套筒的内壁之间也能形成液膜，可以实现磁钢转子的无接触悬浮。从而避免采用接触式轴承带来的磨损，提高微型水力悬浮机械泵的寿命。

Description

一种微型水力悬浮机械泵 【技术领域】
本发明属于机械泵领域，更具体地，涉及一种微型水力悬浮机械泵。
【背景技术】
随着电子技术的快速发展，电子设备朝着功能多元化、信息化，集成化等方面飞速迈进。电子设备的热流量不断攀升使得主动热控系统的大规模使用成为必然。微型泵正是主动热控系统的核心驱动器件。微型机械泵作为微机电系统的一个重要研究方向，在药物输运系统、电子器件冷却系统、热控系统等、微化学分析系统等领域得到广泛应用。
目前，微型机械泵的关键技术在于：1.跨尺度设计，器件之间尺度相差大，需要结合并改良传统泵设计理论，实现跨尺度设计；2.流动与热耦合，需要考虑器件产热和散到系统中的热对热管理系统的反馈影响；3.数值仿真，准确模拟为流场中跨尺度流动和热问题；4.结构可靠性设计，包括防泄漏、抗震、轴系设计等。
目前，可靠性已成为微型泵的一项制约因素。其中，轴系如同微型泵的脊梁，对保障整机的可靠性尤为重要。作为微型泵唯一的活动部件，稳定、鲁棒的轴系设计是延长整机使用寿命的唯一手段。现在，应用在微型机械泵中的轴承分为机械接触式轴承和非接触式轴承。机械接触式轴承由于存在轴承磨损，严重制约了微型泵的使用寿命。非接触式轴承实现了微型泵的无接触式运行，可大大提高微型泵的可靠性和使用寿命。
目前，在非接触式轴承中应用的轴系悬浮技术采用的主要手段有：主动控制悬浮、永磁悬浮、水力悬浮。主动控制悬浮的基本原理是位置传感器捕捉转子的动态位置，利用主控电磁铁产生动态磁场，将转子限定于轴心。其优点是控制精度高，载荷范围大，但控制电路复杂，价格高昂，增加额外耗 电。永磁悬浮利用永磁体的相斥性对转子自由度进行限制。其结构简单、可靠，装配要求低，但无法实现全自由度悬浮，需引入外力限制。水力悬浮利用转子的高速旋转，在悬浮面产生高压液膜，支持转子悬浮。结构稳定可靠，尺寸小，但加工、安装精度要求严格，难以加工和安装。
【发明内容】
针对现有技术的以上缺陷或改进需求，本发明提供了一种微型水力悬浮机械泵，能实现磁钢转子的无接触运行，可以大大减少磁钢转子的磨损，提高微型水力悬浮机械泵的寿命。
为实现上述目的，按照本发明，提供了一种微型水力悬浮机械泵，其特征在于，包括蜗壳、上端盖、叶轮、无刷电机、防水套筒和水润滑螺旋槽推力轴承，其中，
所述蜗壳上设置有进水通道和出水通道，所述蜗壳的内部空间作为泵腔，所述进水通道和出水通道分别与所述泵腔连通；
所述无刷电机包括电机外壳、线圈、磁钢转子、防水套筒、转子套筒和转子转轴，所述电机外壳与所述蜗壳固定连接并且所述电机外壳承接所述上端盖，所述电机外壳的侧壁上安装所述线圈并且其内壁套装用于防护线圈的所述防水套筒，所述上端盖上设置有与所述泵腔连通的中间进水孔，以用于使水流入防水套筒内，所述磁钢转子位于所述电机外壳内并且所述磁钢转子固定穿装在所述转子转轴上，所述转子套筒套接在所述磁钢转子的外侧，所述转子转轴的上端穿过所述上端盖后与所述叶轮固定连接，并且所述叶轮位于所述泵腔内，所述磁钢转子的内侧壁与转子转轴的外侧面之间具有第一空隙作为第一水流通道，所述第一水流通道与所述泵腔连通，所述转子套筒的外侧壁与所述电机外壳的内侧壁之间存在第二空隙作为第二水流通道，所述第二水流通道与所述中间进水孔连通；
所述磁钢转子的上方和下方分别设置一组所述水润滑螺旋槽推力轴承，每组所述水润滑螺旋槽推力轴承均包括静环和带有螺旋螺的动环，其 中，位于所述磁钢转子上方的水润滑螺旋槽推力轴承的动环设置在所述磁钢转子的顶端面上并且其静环设置在所述上端盖的底部，位于所述磁钢转子上方的水润滑螺旋槽推力轴承的动环设置在所述磁钢转子的底端面上并且其静环设置在所述防水套筒的内底面上。
优选地，所述中间进水孔设置有多个并且周向设置。
优选地，所述静环和动环均由硬质合金制成。
优选地，所述电机外壳上设置有定位凸台，所述蜗壳上设置有与所述定位凸台配合的定位凹槽，以用于使叶轮位于泵腔内的合适位置。
总体而言，通过本发明所构思的以上技术方案与现有技术相比，能够取得下列有益效果：
本微型水力悬浮机械泵工作时，静环和动环之间能形成液膜来使磁钢转子悬浮，而转子套筒的外壁和防水套筒的内壁之间也能形成液膜，可以实现磁钢转子的无接触悬浮。此外，通过防水套筒使得无刷电机的线圈与磁钢转子完全隔离，从而能够确保无刷电机的线圈的防水性，由于磁钢转子的无接触悬浮，可以大大减少磁钢转子的磨损，提高微型水力悬浮机械泵的寿命。
【附图说明】
图1是本发明的结构示意图；
图2是本发明的剖视示意简图；
图3是本发明中转子转轴的结构示意图；
图4是本发明中蜗壳的结构示意图；
图5是本发明中上端盖的结构示意图
图6是本发明中动环的结构示意图；
图7是本发明中静环的结构示意图。
【具体实施方式】
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体 实施例仅仅用以解释本发明，并不用于限定本发明。此外，下面所描述的本发明各个实施方式中所涉及到的技术特征只要彼此之间未构成冲突就可以相互组合。
参照图1～图7，一种微型水力悬浮机械泵，其特征在于，包括蜗壳1、上端盖3、叶轮2、无刷电机、防水套筒6和水润滑螺旋槽推力轴承，其中，
所述蜗壳1上设置有进水通道和出水通道，所述蜗壳1的内部空间作为泵腔，所述进水通道和出水通道分别与所述泵腔连通；
所述无刷电机包括电机外壳11、线圈10、磁钢转子9、防水套筒6、转子套筒7和转子转轴8，所述电机外壳11与所述蜗壳1固定连接并且所述电机外壳11承接所述上端盖3，优选地，蜗壳1上有连接通孔，螺栓穿过连接通孔后通过螺纹连接在电机外壳11的上部，所述电机外壳11的侧壁上安装所述线圈10并且其内壁套装用于防护线圈10的所述防水套筒6，所述上端盖3上设置有与所述泵腔连通的中间进水孔3a，以用于使水流入防水套筒6内，优选地，上端盖3搁置在所述防水套筒6上，所述磁钢转子9位于所述电机外壳11内并且所述磁钢转子9固定穿装在所述转子转轴8上，所述转子套筒7套接在所述磁钢转子9的外侧，所述转子转轴8的上端穿过所述上端盖3后与所述叶轮2固定连接，并且所述叶轮2位于所述泵腔内，所述磁钢转子9的内侧壁与转子转轴8的外侧面之间具有第一空隙作为第一水流通道，所述第一水流通道与所述泵腔连通，所述转子套筒7的外侧壁与所述电机外壳11的内侧壁之间存在第二空隙作为第二水流通道，所述第二水流通道与所述中间进水孔3a连通；
所述磁钢转子9的上方和下方分别设置一组所述水润滑螺旋槽推力轴承，每组所述水润滑螺旋槽推力轴承均包括静环4和带有螺旋螺的动环5，其中，位于所述磁钢转子9上方的水润滑螺旋槽推力轴承的动环5设置在所述磁钢转子9的顶端面上并且其静环4设置在所述上端盖3的底部，位于所述磁钢转子9上方的水润滑螺旋槽推力轴承的动环5设置在所述磁钢 转子9的底端面上并且其静环4设置在所述防水套筒6的内底面上。
进一步，所述中间进水孔3a设置有多个并且它们周向设置，所述静环4和动环5均由硬质合金制成，所述上端盖3上设置有定位凸台，所述蜗壳1上设置有与所述定位凸台配合的定位凹槽，以用于使叶轮2位于泵腔内的合适位置。
电机外壳11及设置其上的上端盖3所共同包围形成的内部空间可以容纳磁钢转子9，进流通道101和出流通道102分别设置在蜗壳1上，并与蜗壳1内部的泵腔相连通，这样流体可以在叶轮2驱动下，从进流通道101朝向出流通道102输送并经由出口管路泵出，进入机械泵的大部分的流体主要是通过这种方式流出，少部分进入电机外壳11内部以带走热量。
转子转轴8为叶轮2的驱动提供动力，动环5由硬质合金构成，以支持较长时间工作的要求。为了充分利用无刷电机的特性，必须保证其具备完善的防水性能。为达到此目的，在定子线圈10和转子套筒7之间布置防水套筒6，将线圈10与磁钢转子9隔离，由此为定子线圈10提供防水效果。由于微型泵的尺寸很小，传统的叶轮的安装方式无法采用。为实现叶轮2的可靠安装，本发明中叶轮2与磁钢转子9的输出转子转轴8为过盈配合，并通过粘结剂固定，而且转子转轴8可以采用一根圆柱轴进行加工，将外侧削去一部分，以便于与磁钢转子9之间形成间隙。电机外壳11同时也是泵体的组成部件，它与蜗壳1共同构成微型泵的泵腔。电机外壳11与蜗壳1相接触的接触端面上设置有定位凸台，蜗壳1与电机保护外壳11相接触的接触端面相应设置有定位凹槽，两者配合以保证叶轮2安装定位时的叶轮2与泵腔体的同心，防止叶轮2偏心安装带来的机械干涉和对性能的不利影响。电机外壳11上设置有螺纹孔，蜗壳1在相应位置开设通孔，两者通过螺钉完成连接。
动环5上刻有螺旋槽5a，可以让动环5和静环4之间形成液膜，而转子套筒7的外侧壁和防水套筒6的内侧壁可以形成液膜，提供磁钢转子9悬浮 所需的支撑力。动环5和静环4优选由硬质合金制造，以提高使用寿命。为了给液膜轴承提供足够的流量和带走热量，在上端盖3上开有三个中间进水孔3a，使水一部分进入磁钢转子9上端动环5和静环4之间的间隙，另一部分水由蜗壳1进入转子套筒7和防水套筒6之间的间隙，再通过转子转轴8和磁钢转子9形成的流水通道流回蜗壳1内
本发明通过上端盖3上开的中间进水孔3a和转子转轴8的结构设计形成流水通道，可以给径向液膜轴承提供足够的流量并带走电机产生的热量。此外，通过防水套筒6设计使得无刷电机的定子组件与转子组件完全隔离，从而能够确保无刷电机定子组件的防水性。由于转子的无接触悬浮，可以大大减少转子的磨损，提高微型机械泵的寿命。
所述的防水套筒6，布置在定子线圈10和转子套筒7之间，可以将线圈10与电机外壳11内的水隔离，从而可以确保电机定子线圈10的防水性。
本领域的技术人员容易理解，以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (4)

  1. 一种微型水力悬浮机械泵，其特征在于，包括蜗壳、上端盖、叶轮、无刷电机、防水套筒和水润滑螺旋槽推力轴承，其中，
    所述蜗壳上设置有进水通道和出水通道，所述蜗壳的内部空间作为泵腔，所述进水通道和出水通道分别与所述泵腔连通；
    所述无刷电机包括电机外壳、线圈、磁钢转子、防水套筒、转子套筒和转子转轴，所述电机外壳与所述蜗壳固定连接并且所述电机外壳承接所述上端盖，所述电机外壳的侧壁上安装所述线圈并且其内壁套装用于防护线圈的所述防水套筒，所述上端盖上设置有与所述泵腔连通的中间进水孔，以用于使水流入防水套筒内，所述磁钢转子位于所述电机外壳内并且所述磁钢转子固定穿装在所述转子转轴上，所述转子套筒套接在所述磁钢转子的外侧，所述转子转轴的上端穿过所述上端盖后与所述叶轮固定连接，并且所述叶轮位于所述泵腔内，所述磁钢转子的内侧壁与转子转轴的外侧面之间具有第一空隙作为第一水流通道，所述第一水流通道与所述泵腔连通，所述转子套筒的外侧壁与所述电机外壳的内侧壁之间存在第二空隙作为第二水流通道，所述第二水流通道与所述中间进水孔连通；
    所述磁钢转子的上方和下方分别设置一组所述水润滑螺旋槽推力轴承，每组所述水润滑螺旋槽推力轴承均包括静环和带有螺旋螺的动环，其中，位于所述磁钢转子上方的水润滑螺旋槽推力轴承的动环设置在所述磁钢转子的顶端面上并且其静环设置在所述上端盖的底部，位于所述磁钢转子上方的水润滑螺旋槽推力轴承的动环设置在所述磁钢转子的底端面上并且其静环设置在所述防水套筒的内底面上。
  2. 根据权利要求1所述的一种微型水力悬浮机械泵，其特征在于，所述中间进水孔设置有多个并且周向设置。
  3. 根据权利要求1所述的一种微型水力悬浮机械泵，其特征在于，所 述静环和动环均由硬质合金制成。
  4. 根据权利要求1所述的一种微型水力悬浮机械泵，其特征在于，所述电机外壳上设置有定位凸台，所述蜗壳上设置有与所述定位凸台配合的定位凹槽，以用于使叶轮位于泵腔内的合适位置。
PCT/CN2017/071675 2016-12-12 2017-01-19 一种微型水力悬浮机械泵 WO2018107560A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/575,288 US10495093B2 (en) 2016-12-12 2017-01-19 Micro hydraulic suspension mechanical pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201611139270.6 2016-12-12
CN201611139270.6A CN106762694B (zh) 2016-12-12 2016-12-12 一种微型水力悬浮机械泵

Publications (1)

Publication Number Publication Date
WO2018107560A1 true WO2018107560A1 (zh) 2018-06-21

Family

ID=58880082

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/071675 WO2018107560A1 (zh) 2016-12-12 2017-01-19 一种微型水力悬浮机械泵

Country Status (3)

Country Link
US (1) US10495093B2 (zh)
CN (1) CN106762694B (zh)
WO (1) WO2018107560A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114483602A (zh) * 2021-12-28 2022-05-13 中国航空工业集团公司金城南京机电液压工程研究中心 一种燃油泵旋板阀门的制动结构

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109751254B (zh) * 2019-01-30 2021-06-25 青岛科技大学 一种立式小微型气悬浮离心压缩机
CN109707637B (zh) * 2019-01-30 2020-12-01 青岛科技大学 一种双气悬浮支撑的小微型离心压缩机
CN109707638B (zh) * 2019-01-30 2021-06-25 青岛科技大学 一种轴承和密封一体化的小微型离心压缩机
CN109899303B (zh) * 2019-01-30 2020-12-01 青岛科技大学 一种无径向轴承的小微型离心压缩机
USD928843S1 (en) * 2019-06-20 2021-08-24 Nidec Sankyo Corporation Pump
CN113187730B (zh) * 2020-01-13 2022-12-27 华为终端有限公司 微型泵
CN114001036B (zh) * 2021-10-25 2022-09-16 华中科技大学 一种微型水力悬浮机械泵及其装配方法
CN114593085B (zh) * 2022-02-25 2024-03-15 北京航天动力研究所 一种采用空间悬浮轴承的长寿命温控泵系统
CN114530990B (zh) * 2022-04-21 2022-07-01 佛山登奇伺服科技有限公司 一种ipm散热电机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1372479A (zh) * 1999-04-23 2002-10-02 文特拉西斯特股份有限公司 旋转血泵及其控制系统
KR20080024539A (ko) * 2005-08-04 2008-03-18 베에스하 보쉬 운트 지멘스 하우스게랫테 게엠베하 펌프 몸체, 펌프 및 가정용 물 공급 기기
US20080262289A1 (en) * 2003-05-28 2008-10-23 Goldowsky Michael P Blood Pump Having A Passive Non-Contacting Bearing Suspension
CN201415579Y (zh) * 2009-05-31 2010-03-03 梅志江 水力悬浮二维转喷泉塔
CN102788022A (zh) * 2012-07-16 2012-11-21 华中科技大学 一种高可靠性的微型机械泵
WO2015114136A1 (en) * 2014-02-03 2015-08-06 Nuovo Pignone Srl Multistage turbomachine with embedded electric motors

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951573A (en) * 1946-07-16 1976-04-20 The United States Of America As Represented By The United States Energy Research And Development Administration Fluid lubricated bearing construction
JP2011032923A (ja) * 2009-07-31 2011-02-17 Yamada Seisakusho Co Ltd ウォータポンプ
KR101237023B1 (ko) * 2010-05-19 2013-02-25 주식회사 아모텍 완전 방수구조를 갖는 유체 펌프

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1372479A (zh) * 1999-04-23 2002-10-02 文特拉西斯特股份有限公司 旋转血泵及其控制系统
US20080262289A1 (en) * 2003-05-28 2008-10-23 Goldowsky Michael P Blood Pump Having A Passive Non-Contacting Bearing Suspension
KR20080024539A (ko) * 2005-08-04 2008-03-18 베에스하 보쉬 운트 지멘스 하우스게랫테 게엠베하 펌프 몸체, 펌프 및 가정용 물 공급 기기
CN201415579Y (zh) * 2009-05-31 2010-03-03 梅志江 水力悬浮二维转喷泉塔
CN102788022A (zh) * 2012-07-16 2012-11-21 华中科技大学 一种高可靠性的微型机械泵
WO2015114136A1 (en) * 2014-02-03 2015-08-06 Nuovo Pignone Srl Multistage turbomachine with embedded electric motors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114483602A (zh) * 2021-12-28 2022-05-13 中国航空工业集团公司金城南京机电液压工程研究中心 一种燃油泵旋板阀门的制动结构
CN114483602B (zh) * 2021-12-28 2023-12-12 中国航空工业集团公司金城南京机电液压工程研究中心 一种燃油泵旋板阀门的制动结构

Also Published As

Publication number Publication date
CN106762694A (zh) 2017-05-31
CN106762694B (zh) 2017-09-15
US10495093B2 (en) 2019-12-03
US20190226485A1 (en) 2019-07-25

Similar Documents

Publication Publication Date Title
WO2018107560A1 (zh) 一种微型水力悬浮机械泵
CN109356856B (zh) 一种超薄离心式微型泵
AU2014264829B2 (en) Pump arrangement
JP2007127135A (ja) キャンドモータポンプにおけるポンプ取扱液の循環方法
CN205207206U (zh) 一种基于轴向电机驱动的微型机泵一体式磁力泵
CN106044493A (zh) 一种编码器前置式曳引机
CN109372755B (zh) 一种内叶轮外电机超薄离心泵
CN203297108U (zh) 一种电机磁力泵
CN114001036B (zh) 一种微型水力悬浮机械泵及其装配方法
CN109899303B (zh) 一种无径向轴承的小微型离心压缩机
CN103256230B (zh) 一种电机磁力泵
GB914912A (en) Improvements in or relating to glandless centrifugal pumps for liquids with built-inelectric motor
CN216343036U (zh) 磁悬浮氢气循环泵
WO2021143526A1 (zh) 微型泵
CN110985404B (zh) 一种具有直通式内流道的磁悬浮流体微型泵
CN104696262A (zh) 新型节能潜水电泵
CN211082299U (zh) 一种具有陶瓷轴系的超薄微型泵
CN203604213U (zh) 一种用于离心泵的自吸装置
CN107407289A (zh) 泵
CN114526240B (zh) 一种稀土永磁驱动单级单吸离心泵、冲洗及自润滑方法
CN205225671U (zh) 盘式磁力连接化工滑片泵
CN110762024A (zh) 一种具有陶瓷轴系的超薄微型泵
CN215109551U (zh) 动压气悬浮离心制冷压缩机轴承气封结构及压缩机
JP2017180241A (ja) ポンプおよびライナリング
RU189522U1 (ru) Герметичный химический вертикальный электронасосный агрегат

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17881719

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17881719

Country of ref document: EP

Kind code of ref document: A1