WO2022087922A1 - 一种容积式空气压缩机 - Google Patents

一种容积式空气压缩机 Download PDF

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Publication number
WO2022087922A1
WO2022087922A1 PCT/CN2020/124549 CN2020124549W WO2022087922A1 WO 2022087922 A1 WO2022087922 A1 WO 2022087922A1 CN 2020124549 W CN2020124549 W CN 2020124549W WO 2022087922 A1 WO2022087922 A1 WO 2022087922A1
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WIPO (PCT)
Prior art keywords
inner rotor
axis
outer rotor
compressor
rotor
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Ceased
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PCT/CN2020/124549
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English (en)
French (fr)
Inventor
朱彬
李传武
周胜博
钟周乐
王赚
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Ruili Group Ruian Auto Parts Co Ltd
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Ruili Group Ruian Auto Parts Co Ltd
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Priority to PCT/CN2020/124549 priority Critical patent/WO2022087922A1/zh
Publication of WO2022087922A1 publication Critical patent/WO2022087922A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04—Heating; Cooling; Heat insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet

Definitions

  • the invention relates to the field of air compression equipment, in particular to a positive displacement air compressor.
  • positive displacement air compressors mainly include reciprocating piston type, sliding vane type, screw type, scroll type and so on.
  • piston air compressors have inherent weaknesses: vibration, volume, and noise are relatively large, while scroll, vane, screw and other compressors are difficult to meet high pressure requirements. , poor high pressure performance.
  • oil-free scroll air compressor which realizes volume change through the meshing of dynamic and static scrolls.
  • the gas seal relies on the small gap between the dynamic and static disc meshing and the self-lubricating material on both ends, which increases with the increase of pressure.
  • the high-pressure efficiency of the compressor is low, and the compression and exhaust port is located in the center of the scroll, the temperature is difficult to export, and the service life is poor.
  • the purpose of the present invention is to propose a new type of air compressor in view of the deficiencies of the prior art.
  • the compressor is a positive displacement rotary compressor, which realizes the function of compressing the gas by reducing the gas volume.
  • a positive displacement air compressor the compressor comprises a crankshaft eccentric crank, an inner rotor, an outer rotor and a casing ;
  • the rotation axis O of the crankshaft eccentric crank is located at the crankshaft Between the axis O 3 and the casing axis O 1 , and the O 2 O 3 axial center distance is greater than the O 2 O 1 axial center distance;
  • the crankshaft eccentric crank rotates around the rotation axis O 2
  • the inner rotor is around the crank axis O 2 3
  • Rotation the outer rotor rotates around the axis O1 of the casing;
  • the inner rotor and the outer rotor are mutually driven to make a rotating motion, and the inner rotor slides back and forth inside the outer rotor to complete the gas compression process.
  • the housing axis O 1 , the fulcrum axis O 2 and the crank axis O 3 are located on the same plane in the housing.
  • the inner rotor is connected with the eccentric crank of the crankshaft, and is installed in the outer rotor, and the inner rotor is slidably connected with the outer rotor; the outer rotor is installed in the casing.
  • a working volume is formed between the inner rotor, the outer rotor and the casing; when the compressor is working, the working volume changes periodically.
  • the working volume decreases and the gas is compressed, and the pressure rises and is discharged from the exhaust port.
  • the working volume increases. The large negative pressure gas is sucked from the air inlet to complete the gas compression process.
  • first piston ring and a second piston ring are respectively installed on the inner rotor and the outer rotor for sealing, and the piston ring increases with the pressure of the compressed gas, and the sealing performance is also enhanced under the force of the gas.
  • the eccentric crank of the crankshaft or the outer rotor is connected with the motor, and is driven by the motor, thereby driving the inner rotor to rotate and reciprocate sliding in the outer rotor to realize gas compression.
  • the compressor adopts a built-in intake air cooling method, specifically: an intake valve sheet is arranged on the inner rotor, the air is sucked through an intake joint during operation, and enters the compression chamber through the intake valve sheet on the inner rotor, After compression, it is discharged through an exhaust port.
  • the external air flow is sucked in when the compressor is working to cool down and cool the components inside the shell, which improves the life of each component.
  • the compressor adopts an external water-cooling cooling method
  • the external water-cooling shell adopts a spiral water channel method, specifically: a cooling liquid water channel is arranged on the shell, and an external cooling source is connected to cool the compressor during operation, When working, the coolant is connected from a water inlet on the shell and discharged through the spiral water channel.
  • the compressor adopts a multi-stage compression scheme, and multiple compressor pump heads are arranged on the front side or rear side of the motor to realize staged compression.
  • the compressor of the present invention has the ability of a piston air compressor to build high pressure, and also has the advantages of low vibration, low noise, good heat dissipation, and small size of the rotary compressor.
  • the compressor of the invention has a compact structure, is convenient for installation and arrangement, has few moving parts, high reliability, long service life, and clean oil-free compressed steam source.
  • Fig. 1 is the functional principle diagram of the compressor of the present invention
  • Fig. 2 is the front sectional view of the water-cooled oil-free compressor of the present invention
  • Fig. 3 is the left side sectional view of the water-cooled oil-free compressor of the present invention.
  • Fig. 4 is the top sectional view of the water-cooled oil-free compressor of the present invention.
  • Fig. 5 is the three-dimensional outline view of the water-cooled oil-free compressor of the present invention.
  • FIG. 6 is a structural diagram of a water-cooled oil-free compressor cylinder liner of the present invention.
  • FIG. 7 is a structural diagram of the outer rotor of the water-cooled oil-free compressor of the present invention.
  • FIG. 8 is a structural diagram of the inner rotor of the water-cooled oil-free compressor of the present invention.
  • FIG. 9 is a front sectional view of the air-cooled oil-free compressor of the present invention.
  • Figure 10 is a left side sectional view of the air-cooled oil-free compressor of the present invention.
  • Figure 11 is a top sectional view of the air-cooled oil-free compressor of the present invention.
  • Third maintenance-free bearing 66. Locating pin sleeve; 67. Air-cooled oil-free compressor crankshaft eccentric crank; 68. Fifth maintenance-free bearing; 69. Air-cooled oil-free compressor cover plate; 70 . Cooling fan impeller; 71. Double waterproof oil seal; 72. Fan protection net cover; 73. Front end cover of air-cooled oil-free compressor; 74. Air-cooled oil-free compressor shock pad; 75. Air intake connector; 76. Air flow of air-cooled oil-free compressors.
  • a new type of air compressor provided by the present invention is a positive displacement rotary compressor, which realizes the function of compressing gas by reducing the gas volume.
  • the inner rotor 2 is arranged on the eccentric crank 1 of the crankshaft, and It is placed in the outer rotor 3, and its outer rotor is arranged in the housing 4, and its matching relationship is: the crankshaft 1 can make a rotary motion around the fulcrum axis O 2 , and the inner rotor 2 can do a rotary motion around the crank 1 axis O 3 ,
  • the inner rotor 2 can reciprocate sliding in the outer transmission 3, the outer rotor 3 rotates around the axis O 1 of the casing, and the axis distance of O 2 O 3 is greater than the axis distance of O 2 O 1 , when working: the motor can be used as power
  • the source drives the crankshaft to rotate, its eccentric crank 1 makes a rotational motion around the axis O 1 Do a rotating motion, at this time, the inner
  • the working volume 7 decreases and the gas is compressed, and the pressure rises and is discharged from the exhaust port.
  • the working volume 7 increases to generate a negative pressure gas from the exhaust port. The air intake is sucked in. (If the axial center distance of O 2 O 3 is less than the axial center distance of O 2 O 1 , the inner rotor will swing around the crank axis O 3 )
  • the first piston ring 5 and the second piston ring 6 are arranged on the inner rotor and the outer transmission respectively for sealing.
  • the piston ring is characterized in that with the increase of the pressure of the compressed gas, the sealing performance is also enhanced under the force of the gas. It has the high pressure capability of traditional piston air compressors.
  • a water-cooled oil-free compressor using the compressor principle of the present invention is shown in Figures 2, 3, 4, 5, 6, and 8.
  • the water-cooled oil-free compressor motor shaft 19 is directly connected to drive the water-cooled oil-free compressor through a flat key 22.
  • the eccentric crank 24 of the oil-free compressor rotates, and the motor spindles on both sides of the eccentric crank 24 of the water-cooled oil-free compressor are provided with balance blocks 25, which are used to balance the inertial force of rotating parts such as the inner rotor and reduce the running vibration.
  • the balance block 25 A spacer 33 is arranged on the front side, and the first maintenance-free bearing 23 is arranged on the journal of the eccentric crank 24 of the water-cooled oil-free compressor, which is connected to the inner rotor 21 of the water-cooled oil-free compressor, and the inner rotor 21 of the water-cooled oil-free compressor As shown in FIG. 8 , the inner rotor 21 of the water-cooled oil-free compressor is provided with a self-lubricating piston ring groove 45, a guide ring groove 46, an inner rotor bearing mounting inner hole 48 and a plurality of ventilation and deweighting holes 47.
  • the inner rotor 21 of the oil compressor is provided with a first self-lubricating piston ring 26 and a first guide ring 15, which are arranged in the inner hole of the outer rotor 28 of the water-cooled oil-free compressor, and the outer ring of the water-cooled oil-free compressor 28
  • a first self-lubricating sealing ring 27 is arranged on the side, and the outer rotor 28 of the water-cooled oil-free compressor is shown in FIG. 7 .
  • There are heat dissipation turbulent fins 43, and the end faces on both sides are provided with bearing placement inner holes 44.
  • the inner hole 41 of the outer rotor of the water-cooled oil-free compressor is the first self-contained hole on the inner rotor 21 of the outer rotor of the water-cooled oil-free compressor.
  • the second maintenance-free bearings 20 are arranged in the end faces on both sides of the outer rotor 28, and the second maintenance-free bearings 20 at the rear are arranged on the front end cover 18 of the motor, and the second maintenance-free bearings 20 at the front are arranged on the water-cooled oil-free compressor casing.
  • a maintenance-free bearing 31 for auxiliary support of the motor main shaft is also arranged in the front end cover 30 of the water-cooled oil-free compressor casing, and an air inlet port 32 is also arranged on the front end cover 30 of the water-cooled oil-free compressor casing.
  • the water inlet port 34, the drain port 29, and the front end cover 30 of the water-cooled oil-free compressor housing are installed on the front end surface of the casing 16 and the cylinder liner 14.
  • the cylinder liner 14 is shown in FIG. 6, and the outside of the cylinder liner 14 is provided with
  • the water flow ring groove 37 is provided with a cylinder liner exhaust port 38 and a cylinder liner air inlet 39.
  • the inner ring surface 40 of the cylinder liner is the matching surface of the first self-lubricating sealing ring 27 placed on the outer rotor, and electroplating ceramics can be used. , anodizing, micro-arc oxidation and other surface treatment methods, to achieve high hardness and high finish, reduce wear and ensure service life, the air flow 36 of the water-cooled oil-free compressor during operation is drawn from the cylinder liner air inlet 39, and flows from the cylinder liner.
  • the exhaust port 38 is discharged, and the cylinder liner 14 is press-fitted in the box body 16 to form a circulating flow channel.
  • the opening joint 13 such as the air port 39 can be welded to prevent leakage, and the outside of the cylinder liner exhaust port 38 is also provided with
  • the exhaust valve 12 is compressed with the water-cooled oil-free compressor exhaust joint 11, and the outer casing 16 of the cylinder liner air inlet 39 is also provided with a water-cooled oil-free compressor cover plate 17 for sealing.
  • a plurality of water-cooled oil-free compressor shock pads 35 are examples of water-cooled oil-free compressor shock pads 35 .
  • the cooling method adopts an external air-cooling (air cooling and heat dissipation by arranging a fan impeller on the outside of the compressor) and a built-in air intake cooling airflow scheme, as shown in Figures 9 and 10 , 11 and 12:
  • the motor provides the power source
  • the air-cooled oil-free compressor motor main shaft 59 is directly connected to drive the air-cooled oil-free compressor crankshaft eccentric crank 67 to rotate
  • the air-cooled oil-free compressor inner rotor 55 is arranged on the upper through the third maintenance-free bearing 65, and the air-cooled oil-free compressor inner rotor 55 is arranged with intake valve plates 52 on both sides of the air inlet.
  • the outer side of 52 is the intake valve plate stroke limit plate 53, which is fastened to the inner rotor 55 of the air-cooled oil-free compressor through the first fastening bolt 54.
  • the inner rotor 55 of the air-cooled oil-free compressor is arranged on the ring side.
  • Two self-lubricating piston rings 56 and a second guide ring 57 are arranged on the inner hole of the outer sub 63 of the air-cooled oil-free compressor, and a second self-lubricating ring is arranged on the ring side of the outer sub 63 of the air-cooled oil-free compressor
  • the sealing ring 62 is arranged on the inner channel of the air-cooled oil-free compressor casing 60, and the front and rear sides of the outer rotor 63 of the air-cooled oil-free compressor are provided with fourth maintenance-free bearings 61, which are respectively installed on the air-cooled oil-free compressor.
  • an exhaust valve plate 58, an exhaust valve plate limit plate 51 and an air-cooled type oil-free compressor are arranged outside the exhaust hole of the air-cooled oil-free compressor casing.
  • the oil-free compressor exhaust joint 50, the front end cover 73 of the air-cooled oil-free compressor is also provided with a fifth maintenance-free bearing 68 for supporting the crankshaft eccentric crank 67 of the air-cooled oil-free compressor.
  • the separate design is convenient for assembly. It is connected by the positioning pin sleeve 66 and the second fixing bolt 64.
  • the eccentric crank 67 of the air-cooled oil-free compressor is provided with a balance weight, and the eccentric crank of the air-cooled oil-free compressor is provided with a balance weight.
  • a cooling fan impeller 70 is also arranged on the front side of the 67, and a double-channel waterproof oil seal 71 is also arranged on the crankshaft eccentric crank tail journal, which is placed in the cover plate 69 of the air-cooled oil-free compressor.
  • the air-cooled oil-free compressor The front end cover 73 is also provided with an air intake joint 75 , a fan protection mesh cover 72 , and the whole machine is secured on the air-cooled oil-free compressor shock pad 74 .
  • the airflow 76 of the air-cooled oil-free compressor during operation is shown in Figures 9 and 11: the gas is inhaled by the air inlet joint 75, enters the compression chamber through the inner rotor 55 and the air inlet valve plate 52 of the air-cooled oil-free compressor, and is compressed. After that, it is discharged from the air-cooled oil-free compressor exhaust joint 50, and the built-in intake air cooling reduces the temperature of the transmission mechanism and increases the life of each component.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

一种空气压缩机，压缩机包括曲轴偏心曲柄（1）、内转子（2）、外转子（3）和壳体（4）；曲轴偏心曲柄（1）具有曲柄轴线O 3，壳体（4）具有壳体轴线O 1，并且在壳体轴线O 1与曲柄轴线O 3之间具有支点轴线O 2，O 2O 3轴心距大于O 2O 1轴心距；内转子（2）与曲轴偏心曲柄（1）相连接，并安装在外转子（3）内，外转子（3）安装在壳体（4）内；曲轴偏心曲柄（1）绕支点轴线O 2旋转，同时内转子（2）绕曲柄轴线O 3旋转，内转子（2）在外转子（3）内部往复滑动，进而带动外转子（3）绕壳体轴线O 1旋转；实现容积变化完成气体压缩过程。压缩机结构紧凑便于安装布置，运动部件少，可靠性高，寿命长，无油压缩汽源清洁。

Description

一种容积式空气压缩机 技术领域
本发明涉及空气压缩设备领域，尤其涉及一种容积式空气压缩机。
背景技术
目前容积式空气压缩机主要有往复活塞式、滑片式、螺杆式、涡旋式等。活塞式空压机相较于涡旋、滑片、螺杆等回转类压缩机存在先天性弱势：震动、体积、噪音相对较大，而涡旋、滑片、螺杆等压缩机又难于满足高压需求，高压性能差。例如无油涡旋空气压缩机，其通过动、静涡盘啮合实现容积变化，压缩过程气体密封依靠动、静窝盘啮合小间隙和两端面自润滑材料密封，其随压力升高气体泄漏加大致使压缩机高压效率低下，且压缩排气口位于涡盘中心，温度难于导出，使用寿命差。
发明内容
本发明目的在于针对现有技术的不足，提出一种新型空气压缩机，该压缩机为容积式回转类压缩机，通过缩小气体容积，实现压缩气体功能。
本发明的目的是通过以下技术方案来实现的：一种容积式空气压缩机，该压缩机包括曲轴偏心曲柄、内转子、外转子和壳体；所述曲轴偏心曲柄的旋转轴线O 2位于曲柄轴线O 3和壳体壳体轴线O 1之间，并且O 2O 3轴心距大于O 2O 1轴心距；所述曲轴偏心曲柄绕旋转轴线O 2旋转，同时内转子绕曲柄轴线O 3旋转，外转子绕壳体轴线O 1旋转；内转子与外转子相互传动做旋转运动同时内转子在外转子内部往复滑动，完成气体压缩过程。
进一步地，当内转子位于下止点或上止点时，所述壳体轴线O 1、支点轴线O 2和曲柄轴线O 3位于壳体内同一平面上。
进一步地，所述内转子与曲轴偏心曲柄相连接，并安装在外转子内，内转子与外转子滑动连接；所述外转子安装在壳体内。
进一步地，所述内转子、外转子和壳体之间构成工作容积；压缩机工作时，工作容积发生周期性变化。
进一步地，当内转子从下止点向上止点运动时，工作容积减小气体被压缩，压力升高由排气口排出，当内转子从上止点向下止点运动时，工作容积增大产生负压气体从进气口被吸入，完成气体压缩过程。
进一步地，所述内转子和外传子上分别安装有第一活塞环和第二活塞环用于密封，活塞环随压缩气体压力升高，在气体作用力下密封性也随之增强。
进一步地，所述曲轴偏心曲柄或外转子与电机相连接，由电机驱动，进而带动内转子旋转和在外转子内往复滑动，实现气体压缩。
进一步地，所述压缩机采用内置进气冷却方式，具体为：在内转子上布置进气阀片，工作时气流通过一个进气接头吸入，经内转子上的进气阀片进入压缩腔，压缩后再由一个排气口排出，此过程中通过压缩机工作时吸入外界气流对壳体内部各部件进行降温冷却，提升了各部件寿命。
进一步地，所述压缩机采用外置水冷冷却方式，外置水冷壳体采用螺旋水道方式，具体为：在壳体上设置冷却液水道，通过外部接入冷却源对压缩机工作时进行降温，工作时冷却液从壳体上的一个进水口接入并经螺旋水道排出。
进一步地，所述压缩机采用多级压缩方案，在电机前侧或者后侧布置多个压缩机泵头来实现分级压缩。
本发明的有益效果：本发明压缩机具有活塞式空气压缩机建高压能力，又兼具回转式压缩机振动小、噪音低、散热好、体积小等优点。本发明压缩机结构紧凑便于安装布置，运动部件少可靠性高寿命长，无油压缩汽源清洁。
附图说明
图1为本发明压缩机功能原理图；
图2为本发明水冷式无油压缩机主视剖面图；
图3为本发明水冷式无油压缩机左视剖面图；
图4为本发明水冷式无油压缩机俯视剖面图；
图5为本发明水冷式无油压缩机立体外形图；
图6为本发明水冷式无油压缩机缸套结构图；
图7为本发明水冷式无油压缩机外转子结构图；
图8为本发明水冷式无油压缩机内转子结构图；
图9为本发明风冷式无油压缩机主视剖面图；
图10为本发明风冷式无油压缩机左视剖面图；
图11为本发明风冷式无油压缩机俯视剖面图；
图12为本发明风冷式无油压缩机立体外形图；
图中、1.曲轴偏心曲柄；2.内转子；3.外转子；4.壳体；5.第一活塞环；6.第二活塞环；7.工作容积；11.水冷式无油压缩机排气接头；12.排气阀；13.开口接合处；14.缸套；15.第一导向环；16.箱体；17.水冷式无油压缩机盖板；18.电机前端盖；19.水冷式无油压缩机电机主轴；20.第二免维护轴承；21.水冷式无油压缩机内转子；22.平键；23.第一 免维护轴承；24.水冷式无油压缩机偏心曲柄；25.平衡块；26.第一自润滑活塞环；27.第一自润滑密封环；28.水冷式无油压缩机外传子；29.排水接口；30.水冷式无油压缩机壳体前端盖；31.电机主轴辅助支撑用免维护轴承；32.进气接口；33.隔套；34.进水接口；35.水冷式无油压缩机减震垫；36.水冷式无油压缩机的气流；37.水流环槽；38.缸套排气口；39.缸套进气口；40.缸套内环面；41.水冷式无油压缩机外转子内孔；42.自润滑密封环沟槽；43.散热扰流翅片；44.外转子轴承安放内孔；45.自润滑活塞环沟槽；46.导向环槽；47.通气去重孔；48.内转子轴承安装内孔；50.风冷式无油压缩机排气接头；51.排气阀片限程板；52.进气阀片；53.进气阀片限程板；54.第一固紧螺栓；55.风冷式无油压缩机内转子；56.第二自润滑活塞环；57.第二导向环；58.排气阀片；59.风冷式无油压缩机电机主轴；60.风冷式无油压缩机壳体；61.第四免维护轴承；62.第二自润滑密封环；63.风冷式无油压缩机外传子；64.第二固紧螺栓；65.第三免维护轴承；66.定位销套；67.风冷式无油压缩机曲轴偏心曲柄；68.第五免维护轴承；69.风冷式无油压缩机盖板；70.冷却风扇叶轮；71.双道防水油封；72.风扇防护网罩；73.风冷式无油压缩机前端盖；74.风冷式无油压缩机减震垫；75.进气接头；76.风冷式无油压缩机的气流。
具体实施方式
以下结合附图对本发明具体实施方式作进一步详细说明。
本发明提供的一种新型空气压缩机，该压缩机为容积式回转类压缩机，通过缩小气体容积，实现压缩气体功能，如图1所示：内转子2布置于曲轴偏心曲柄1上，并放置于外转子3内，其外转子布置于壳体4内，其配作关系为:曲轴曲柄1可绕支点轴线O 2做旋转运动，内转子2可绕曲柄1轴线O 3做旋转运动，内转子2可在外传子3内做往复滑动，外转子3绕壳体轴线O 1做旋转运动,且O 2O 3轴心距大于O 2O 1轴心距，工作时：可由电机作为动力源带动曲轴旋转，其偏心曲柄1便绕轴线O 2做旋转运动，布置于上的内转子2便做旋转往复运动(内转子绕曲柄轴线O 3做旋转运动，并带动外传子3绕轴线O 1做旋转运动，此时旋转过程中内转子便在外传子内做往复运动)，由内转子、外转子、壳体所构成的工作容积7则会发生周期性变化，即当内转子从下止点向上止点运动时，工作容积7减小气体被压缩，压力升高由排气口排出，当内转子从上止点向下止点运动时，工作容积7增大产生负压气体从进气口被吸入。(若O 2O 3轴心距小于O 2O 1轴心距，则内转子绕曲柄轴线O 3做摆动)
密封方式：内转子和外传子上分别布置有第一活塞环5和第二活塞环6用于密封，活塞环特点在于随压缩气体压力升高，在气体作用力下密封性也随之增强，具有传统活塞式空压机建高压能力。
实施例1
一种采用本发明压缩机原理的水冷式无油压缩机如图2、3、4、5、6、8所示：采用水冷式无油压缩机电机主轴19通过平键22直连带动水冷式无油压缩机偏心曲柄24旋转，水冷式无油压缩机偏心曲柄24两侧的电机主轴上均布置有平衡块25，用于平衡内转子等旋转部件的惯性力，降低运行震动，平衡块25前侧布置有隔套33，水冷式无油压缩机偏心曲柄24轴颈上通过布置第一免维护轴承23，连接至水冷式无油压缩机内转子21，水冷式无油压缩机内转子21如图8所示，水冷式无油压缩机内转子21上设有自润滑活塞环沟槽45，导向环槽46，内转子轴承安装内孔48及多个通气去重孔47，水冷式无油压缩机内转子21上布置有第一自润滑活塞环26和第一导向环15，并配作于水冷式无油压缩机外转子28内孔中，水冷式无油压缩机外传子28环侧上布置有第一自润滑密封环27，水冷式无油压缩机外转子28如图7所示，水冷式无油压缩机外转子28外侧设有用于安放自润滑密封环沟槽42，还设有散热扰流翅片43，两侧端面设有轴承安放内孔44，水冷式无油压缩机外转子内孔41为水冷式无油压缩机外转子内孔内转子21上的第一自润滑活塞环26和第一导向环15配作面，也可采用电镀陶瓷、阳极氧化、微弧氧化等表面处理方式，达到高硬度和高光洁度，降低磨损保障使用寿命，水冷式无油压缩机外转子28两侧端面内布置有第二免维护轴承20，并且后面的第二免维护轴承20布置于电机前端盖18上，前面的第二免维护轴承20布置于水冷式无油压缩机壳体前端盖30上，水冷式无油压缩机壳体前端盖30内还布置有电机主轴辅助支撑用免维护轴承31，水冷式无油压缩机壳体前端盖30上还布置有进气接口32，进水接口34，排水接口29，水冷式无油压缩机壳体前端盖30安装于箱体16和缸套14的前端面上，缸套14如图6所示，缸套14外侧设有水流环槽37，并设有缸套排气口38和缸套进气口39，缸套内环面40为安放于外转子上第一自润滑密封环27的配作面，可采用电镀陶瓷、阳极氧化、微弧氧化等表面处理方式，达到高硬度和高光洁度，降低磨损保障使用寿命，工作时水冷式无油压缩机的气流36所示由缸套进气口39吸入，从缸套排气口38排出，缸套14压装于箱体16内构成循环流道，工作时水从下侧进水接口34流入从上排水接口29流出，在缸套排气口38和缸套进气口39等开口接合处13可采用焊接工艺以防止泄漏，缸套排气口38外侧还设有排气阀12，并用水冷式无油压缩机排气接头11压紧，缸套进气口39外侧箱体16上还设有用于密封的水冷式无油压缩机盖板17，整机安放于多个水冷式无油压缩机减震垫35上。
实施例2
一种采用本发明压缩机原理的风冷式无油压缩机，冷却方式采用外置风冷(压缩机外侧通过布置风扇叶轮进行风冷散热)和内置进气冷却气流方案，如图9、10、11、12所示：由电机提供动力源，风冷式无油压缩机电机主轴59直连驱动风冷式无油压缩机曲轴偏心曲柄67旋转，风冷式无油压缩机曲轴偏心曲柄67上通过第三免维护轴承65布置有风冷式无油压 缩机内转子55，风冷式无油压缩机内转子55进气道两侧端面上布置有进气阀片52，进气阀片52外侧为进气阀片限程板53，通过第一固紧螺栓54固紧于风冷式无油压缩机内转子55上，风冷式无油压缩机内转子55环侧上布置有第二自润滑活塞环56，第二导向环57，配作于风冷式无油压缩机外传子63的内孔上，风冷式无油压缩机外传子63环侧上布置有第二自润滑密封环62配作于风冷式无油压缩机壳体60内道上，风冷式无油压缩机外转子63前后侧均布置有第四免维护轴承61分别安装于风冷式无油压缩机壳体60和风冷式无油压缩机前端盖73上，风冷式无油压缩机壳体的排气孔外布置有排气阀片58、排气阀片限程板51和风冷式无油压缩机排气接头50，风冷式无油压缩机前端盖73内还布置有第五免维护轴承68，用于支撑风冷式无油压缩机曲轴偏心曲柄67，此曲轴偏心曲柄可为分离式设计便于装配，其通过定位销套66和第二固紧螺栓64连接，风冷式无油压缩机曲轴偏心曲柄67上设有平衡配重，风冷式无油压缩机曲轴偏心曲柄67的前侧还布置有冷却风扇叶轮70，曲轴偏心曲柄尾部轴颈上还布置有双道防水油封71，安放于风冷式无油压缩机盖板69内，此外风冷式无油压缩机前端盖73上还布置有进气接头75、风扇防护网罩72、整机安防于风冷式无油压缩机减震垫74上。
工作时风冷式无油压缩机的气流76如图9和11所示：气体由进气接头75吸入，经风冷式无油压缩机内转子55、进气阀片52进入压缩腔，压缩后由风冷式无油压缩机排气接头50排出，内置进气冷却降低传动机构温度提升各部件寿命。
上述实施例用来解释说明本发明，而不是对本发明进行限制，在本发明的精神和权利要求的保护范围内，对本发明作出的任何修改和改变，都落入本发明的保护范围。

Claims (10)

  1. 一种容积式空气压缩机，其特征在于，该压缩机包括曲轴偏心曲柄(1)、内转子(2)、外转子(3)和壳体(4)；所述曲轴偏心曲柄(1)的旋转轴线O 2位于曲柄轴线O 3和壳体(4)壳体轴线O 1之间，并且O 2O 3轴心距大于O 2O 1轴心距；所述曲轴偏心曲柄(1)绕旋转轴线O 2旋转，同时内转子(2)绕曲柄轴线O 3旋转，外转子(3)绕壳体轴线O 1旋转；内转子(2)与外转子(3)相互传动做旋转运动同时内转子(2)在外转子(3)内部往复滑动，完成气体压缩过程。
  2. 根据权利要求1所述的一种容积式空气压缩机，其特征在于，当内转子(2)位于下止点或上止点时，所述壳体轴线O 1、支点轴线O 2和曲柄轴线O 3位于壳体内同一平面上。
  3. 根据权利要求1所述的一种容积式空气压缩机，其特征在于，所述内转子(2)与曲轴偏心曲柄(1)相连接，并安装在外转子(3)内，内转子(2)与外转子(3)滑动连接；所述外转子(3)安装在壳体(4)内。
  4. 根据权利要求1所述的一种容积式空气压缩机，其特征在于，所述内转子(2)、外转子(3)和壳体(4)之间构成工作容积(7)；压缩机工作时，工作容积(7)发生周期性变化。
  5. 根据权利要求4所述的一种容积式空气压缩机，其特征在于，当内转子(2)从下止点向上止点运动时，工作容积(7)减小气体被压缩，压力升高由排气口排出，当内转子(2)从上止点向下止点运动时，工作容积(7)增大产生负压气体从进气口被吸入，完成气体压缩过程。
  6. 根据权利要求1所述的一种容积式空气压缩机，其特征在于，所述内转子(2)和外传子(3)上分别安装有第一活塞环(5)和第二活塞环(6)用于密封，活塞环随压缩气体压力升高，在气体作用力下密封性也随之增强。
  7. 根据权利要求1所述的一种容积式空气压缩机，其特征在于，所述曲轴偏心曲柄(1)或外转子(3)与电机相连接，由电机驱动，进而带动内转子(2)旋转和在外转子(3)内往复滑动，实现气体压缩。
  8. 根据权利要求1所述的一种容积式空气压缩机，其特征在于，所述压缩机采用内置进气冷却方式，具体为：在内转子(2)上布置进气阀片，工作时气流通过一个进气接头吸入，经内转子(2)上的进气阀片进入压缩腔，压缩后再由一个排气口排出，此过程中通过压缩机工作时吸入外界气流对壳体内部各部件进行降温冷却，提升了各部件寿命。
  9. 根据权利要求1所述的一种容积式空气压缩机，其特征在于，所述压缩机采用外置水冷冷却方式，外置水冷壳体采用螺旋水道方式，具体为：在壳体上设置冷却液水道，通过外 部接入冷却源对压缩机工作时进行降温，工作时冷却液从壳体上的一个进水口接入并经螺旋水道排出。
  10. 根据权利要求7所述的一种容积式空气压缩机，其特征在于，所述压缩机采用多级压缩方案，在电机前侧或者后侧布置多个压缩机泵头来实现分级压缩。
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