WO2020082546A1 - 一种压缩机的曲轴轴承和压缩机 - Google Patents

一种压缩机的曲轴轴承和压缩机 Download PDF

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Publication number
WO2020082546A1
WO2020082546A1 PCT/CN2018/121595 CN2018121595W WO2020082546A1 WO 2020082546 A1 WO2020082546 A1 WO 2020082546A1 CN 2018121595 W CN2018121595 W CN 2018121595W WO 2020082546 A1 WO2020082546 A1 WO 2020082546A1
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Prior art keywords
crankshaft
rotor assembly
compressor
bearing
end surface
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PCT/CN2018/121595
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English (en)
French (fr)
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叶晓飞
赵旭敏
彭慧明
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珠海格力节能环保制冷技术研究中心有限公司
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Publication of WO2020082546A1 publication Critical patent/WO2020082546A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
    • F16C9/02—Crankshaft bearings
    • 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
    • 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
    • F04C2240/00—Components
    • F04C2240/50—Bearings

Definitions

  • the invention belongs to the technical field of compressors, and particularly relates to a crankshaft bearing of a compressor and a compressor.
  • the structure design of the existing rotary compressor, the rotor assembly is provided with an inner hole, which is interference-matched with the long axis of the crankshaft, and the balance weights are installed on the upper and lower end surfaces. Function to reduce compressor vibration and noise.
  • crankshaft rotates at high speed under the constraints of the bearing.
  • the unbalanced force generated by the rotor assembly causes the crankshaft long axis to produce a certain degree of disturbance and bend, and changes the original balance design parameters.
  • the long axis of the crankshaft is disturbed and bent, resulting in a reduction of the compressor stator and rotor assembly air gap, which is prone to interference and electromagnetic noise.
  • the unbalanced force generated by the rotor assembly causes the long axis of the crankshaft to produce a certain degree of disturbance and bend, resulting in a decrease in the stability of the crankshaft rotation, which is easy to wear with the bearing, It also results in a reduction in the compressor stator and rotor assembly air gap, which is prone to technical problems such as interference collision and electromagnetic noise. Therefore, the present invention studies and designs a compressor crankshaft bearing and compressor.
  • the technical problem to be solved by the present invention is to overcome the high-speed rotation of the compressor crankshaft in the prior art under the constraints of the bearings.
  • the unbalanced force generated by the rotor assembly causes the crankshaft long axis to produce a certain degree of disturbance and bend, resulting in stable crankshaft rotation
  • the performance is reduced, and the bearing is easy to wear defects, thereby providing a compressor crankshaft bearing and compressor.
  • the invention provides a compressor crankshaft bearing, which includes:
  • a bearing body, an upper end surface of the bearing body is located below the rotor assembly of the compressor, and a groove is further provided on the upper end surface of the bearing body, and a rolling body is provided in the groove, the rolling body can The lower end surfaces of the rotor assembly meet to support the rotor assembly through the rolling body.
  • the groove is an arc-shaped groove
  • the rolling body is a spherical ball, and the spherical ball can roll in the arc-shaped groove.
  • a plurality of the grooves are evenly distributed on the upper end surface in a radial direction.
  • a plurality of the grooves are evenly distributed radially on the upper end surface.
  • the size and shape of the plurality of grooves are the same, and the size and shape of the plurality of rolling bodies are also the same.
  • the present invention also provides a compressor, which includes the crankshaft bearing of the compressor according to any one of the preceding items, and further includes a rotor assembly, and the rolling element on the upper end surface of the crankshaft bearing can receive the rotor assembly.
  • crankshaft is also included, and the crankshaft passes through the crankshaft bearing to support the crankshaft through the crankshaft bearing.
  • the rotor assembly also has an intermediate receiving hole, and the crankshaft is also penetrated in the intermediate receiving hole of the rotor assembly.
  • the compressor is a rotary compressor.
  • the rolling element is in contact with the lower end surface of the rotor assembly to support the rotor assembly through the rolling element and can rotate
  • the rotor assembly and the crankshaft rotate at a high speed at the same time, and the balls can roll freely between the bearing slot and the end surface of the rotor assembly while supporting the rotor assembly, which effectively limits the occurrence of deflection of the crankshaft long axis, that is, the rotor
  • the unbalanced force generated by the component acts on the crankshaft, the rotor component is not tilted by the support of the ball, so the long axis of the crankshaft can not be bent, which can improve the stability of the crankshaft rotation and effectively prevent and reduce the crankshaft and bearing. It can also prevent the air gap between the stator and rotor components from decreasing, preventing interference and electromagnetic noise.
  • FIG. 1 is a schematic front view of the crankshaft bearing of the compressor of the present invention
  • FIG. 2 is a schematic plan view of the crankshaft bearing of the compressor of FIG. 1;
  • FIG. 3 is a schematic diagram of the internal cross-sectional structure of the compressor of the present invention.
  • FIG. 4 is a partially enlarged structural diagram of part A in FIG. 3.
  • the present invention provides a compressor crankshaft bearing, which includes:
  • a bearing body 1, an upper end surface of the bearing body 1 is located below the rotor assembly 2 of the compressor, and a groove 12 is provided on the upper end surface 11 of the bearing body 1, and a rolling body is provided in the groove 12 3.
  • the rolling element 3 can be in contact with the lower end surface of the rotor assembly 2 to support the rotor assembly 2 through the rolling element 3.
  • a groove is provided on the upper end surface of the bearing body, and a rolling body is placed in the groove, so that the rolling body is in contact with the lower end surface of the rotor assembly to support the rotor assembly through the rolling body, and can be rotated and compressed
  • the rotor assembly and the crankshaft rotate at a high speed at the same time, and the balls can freely roll between the bearing slot and the end surface of the rotor assembly while supporting the rotor assembly, which effectively limits the deflection of the crankshaft long axis, that is, the rotor assembly
  • the generated unbalanced force acts on the crankshaft, the rotor assembly is not tilted by the support of the ball, so the long axis of the crankshaft can not be bent, which can improve the stability of the crankshaft rotation and effectively prevent and reduce the gap between the crankshaft and the bearing It can also prevent the reduction of the air gap between the stator and rotor components, prevent interference and electromagnetic noise.
  • the existing conventional rotor assembly does not directly contact the upper bearing and has a certain distance.
  • the rotor assembly rotates at high speed. Due to the imbalance of the rotor assembly itself (the balance weights are installed on the upper and lower end surfaces, the rotating centrifugal force is generated for balancing The eccentricity of the crankshaft and the rotation of the piston are unbalanced) or errors in assembly cause the crankshaft to produce disturbances, that is, the long axis of the crankshaft bends, and the rotor assembly tilts.
  • crankshaft rotor assembly only relies on the inner bore of the upper bearing to support the crankshaft.
  • the long axis of the crankshaft is in interference fit with the inner bore of the rotor assembly.
  • the rotor assembly tilts.
  • the lower end surface of the rotor assembly is constrained and cannot be tilted, and thus crankshaft disturbance cannot be generated.
  • the groove 12 is an arc-shaped groove
  • the rolling body 3 is a spherical ball, and the spherical ball can roll in the arc-shaped groove.
  • This is the preferred structural form of the groove and rolling body of the present invention, which can make the spherical ball roll freely in the arc-shaped groove, so that the upper end surface of the ball bearing rotor assembly can rotate with the rotor assembly, and the lower end is provided in the concave of the bearing
  • the groove does not rotate, which effectively supports the rotor assembly and reduces the curvature of the crankshaft.
  • the multiple grooves and the multiple rolling elements which are provided in one-to-one correspondence, can form a structure that supports the rotor assembly at multiple positions on the upper end surface of the bearing, so that the rotor assembly can be effectively supported on the bearing movably. Improve the support effect and further reduce the occurrence of crankshaft bending.
  • a plurality of the grooves 12 are evenly distributed on the upper end surface 11 in a radial direction.
  • This is the preferred arrangement of the groove of the present invention on the upper end surface of the bearing, that is, the uniform distribution in the radial direction can achieve the role of supporting the rotor assembly in the radial direction, improve the uniform support force of the rotor assembly, and further prevent the length of the crankshaft The shaft is bent.
  • a plurality of the grooves 12 are distributed radially and evenly on the upper end surface 11.
  • This is a further preferred arrangement of the grooves of the present invention on the upper end surface of the bearing, that is, the radial uniform distribution on the upper end surface can achieve the effect of further uniformly supporting the rotor assembly in the radial direction and improve the uniform support of the rotor assembly Force to further prevent bending of the long axis of the crankshaft.
  • the balls can roll freely between the bearing slot and the end surface of the rotor assembly, and can support the rotor assembly and prevent the rotor assembly from tilting. Because the balls are linearly arranged in the circumference, they can effectively support the rotor assembly plane and prevent it from swinging left and right. It also indirectly limits the deflection of the long axis of the crankshaft, that is, although the unbalanced force generated by the rotor assembly acts on the crankshaft, the rotor assembly cannot be tilted by the support of the ball, so the long axis of the crankshaft cannot bend.
  • the size and shape of the plurality of grooves 12 are the same, and the size and shape of the plurality of rolling bodies 3 are also the same.
  • the rotary compressor bearing of the present invention is provided with a flat rolling support structure, that is, a clamping groove is provided through the bearing plane, and the circumference of the clamping groove is linearly distributed, and balls are installed in the clamping groove, and the balls can roll freely in the clamping groove.
  • a clamping groove is provided through the bearing plane, and the circumference of the clamping groove is linearly distributed, and balls are installed in the clamping groove, and the balls can roll freely in the clamping groove.
  • Figure 1 introduces a schematic diagram of the structure of the upper bearing.
  • the upper surface of the bearing is provided with a semi-circular clamping slot, and the circumference of the clamping slot is linearly distributed. Balls can be installed in the clamping slot, and the balls can roll freely in the clamping slot.
  • Figure 4 shows the assembly diagram of the ball.
  • the ball is installed in the semi-circular slot of the upper bearing and can roll freely.
  • the lower end surface fits the ball, that is, the ball plays a role of supporting the rotor assembly and restricts its axial movement.
  • each ball is in point contact with the lower end surface of the rotor assembly.
  • Multi-point connection on the same plane serves to restrict the tilt of the rotor assembly, which indirectly prevents the occurrence of bending disturbance of the long axis of the crankshaft.
  • Figure 3 describes the rotary compressor, the inner assembly of the rotor assembly and the long axis of the crankshaft interference assembly.
  • the upper and lower bearings constrain its rotational movement, and the axial movement of the rotor assembly and crankshaft is installed on the upper bearing.
  • the balls distributed linearly in the circumference of the end face slot are constrained by multi-point contact with the lower end surface of the rotor assembly.
  • the function of the ball support has 2 points. 1 is to limit the axial movement of the rotor assembly and the crankshaft. 2 is to prevent the rotor assembly from tilting. Indirectly avoids bending deflection of the long axis.
  • the present invention also provides a compressor, which includes the crankshaft bearing of the compressor according to any one of the preceding items, and further includes a rotor assembly 2.
  • the rolling body 3 on the upper end surface 11 of the crankshaft bearing 10 can receive the rotor Component 2.
  • the rotor assembly and the crankshaft rotate at a high speed at the same time, and the balls can roll freely between the bearing slot and the end surface of the rotor assembly while supporting the rotor assembly, effectively limiting the deflection of the crankshaft long axis
  • the unbalanced force generated by the rotor assembly acts on the crankshaft, the rotor assembly is not tilted by the support of the ball, so the long axis of the crankshaft cannot bend, which can improve the stability of the crankshaft rotation, effectively prevent and reduce The wear between the small crankshaft and the bearing, and can also prevent the stator and rotor assembly air gap reduction, prevent interference and electromagnetic noise.
  • crankshaft 4 is further included, and the crankshaft 4 is inserted into the crankshaft bearing 10 to support the crankshaft 4 through the crankshaft bearing 10.
  • the crankshaft can drive the rollers in the cylinder for compression, and the crankshaft bearing can effectively support the crankshaft.
  • the rotor assembly 2 further has an intermediate receiving hole 21, and the crankshaft 4 is also penetrated in the intermediate receiving hole 21 of the rotor assembly 2.
  • the crankshaft can obtain power from the rotor assembly and be driven by the rotor assembly to rotate together, thereby providing conditions for further driving the rotation of the rollers in the cylinder.
  • the compressor is a rotary compressor. This is the preferred structure of the compressor of the present invention.
  • the invention provides a rotary compressor.
  • the upper bearing end surface is provided with a circumferential linear distribution groove (ie, groove 12) for assembling balls.
  • the balls can be used in the groove to rotate and roll.
  • the installation position of the lower end surface of the rotor assembly is outside the ball Circular contact, multiple ball point contacts play a supporting role, limiting its axial movement while preventing the rotor assembly from tilting, and avoiding bending deflection of the long axis of the crankshaft.
  • the rotor assembly is assembled through the inner hole and the long axis of the crankshaft.
  • the rotor assembly moves linearly in Z and rotates around X and Y through contact with multiple ball points.
  • the rotation of the crankshaft around Z is constrained through the upper and lower bearings. .

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

一种压缩机的曲轴轴承和压缩机，压缩机的曲轴轴承包括：轴承本体(1)，轴承本体(1)的上端面位于压缩机的转子组件(2)的下方，且在轴承本体(1)的上端面(11)还设置有凹槽(12)，凹槽(12)中设置有滚动体(3)，滚动体(3)能够与转子组件(2)的下端面相接、以通过滚动体(3)支撑转子组件(2)。

Description

一种压缩机的曲轴轴承和压缩机
本申请要求于2018年10月23日提交中国专利局、申请号为201811237239.5、发明名称为“一种压缩机的曲轴轴承和压缩机”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明属于压缩机技术领域，具体涉及一种压缩机的曲轴轴承和压缩机。
背景技术
现有旋转压缩机结构设计，转子组件设有内孔，与曲轴长轴过盈配合，且上下端面安装有平衡块，随压缩机旋转产生离心力，起到平衡曲轴偏心圆和活塞力旋转离心力的作用，从而降低压缩机振动和噪声。
曲轴在轴承的约束下高速旋转，转子组件产生的不平衡力导致曲轴长轴产生一定的扰度而弯曲，并使原有的平衡设计参数变化，曲轴旋转稳定性下降，容易与轴承产生磨损，同时曲轴长轴产生扰度而弯曲导致压缩机定子和转子组件气隙减少，容易产生干涉碰撞和电磁噪声。
如何减少曲轴高速旋转下的挠度，提高其旋转稳定性，是各压缩机厂家重点研究课题。
由于现有技术中的压缩机曲轴在轴承的约束下高速旋转，转子组件产生的不平衡力导致曲轴长轴产生一定的扰度而弯曲，导致曲轴旋转稳定性下降，容易与轴承产生磨损，并且还导致压缩机定子和转子组件气隙减少，容易产生干涉碰撞和电磁噪声等技术问题，因此本发明研究设计出一种压缩机的曲轴轴承和压缩机。
发明内容
因此，本发明要解决的技术问题在于克服现有技术中的压缩机曲轴在轴承的约束下高速旋转，转子组件产生的不平衡力导致曲轴长轴产生一定的扰度而弯曲，导致曲轴旋转稳定性下降，容易与轴承产生磨损的缺陷，从而提供一种压缩机的曲轴轴承和压缩机。
本发明提供一种压缩机的曲轴轴承，其包括：
轴承本体，所述轴承本体的上端面位于压缩机的转子组件的下方，且在所述轴承本体的上端面还设置有凹槽，所述凹槽中设置有滚动体，所述滚动体能够与所述转子组件的下端面相接、以通过所述滚动体支撑所述转子组件。
优选地，
所述凹槽为圆弧形凹槽，所述滚动体为球形滚珠，所述球形滚珠能够在所述圆弧形凹槽中滚动。
优选地，
所述凹槽为多个，所述滚动体也为多个、且与所述凹槽一一对应设置。
优选地，
多个所述凹槽在所述上端面上成径向均匀地分布。
优选地，
多个所述凹槽在所述上端面上呈放射状均匀地分布。
优选地，
多个所述凹槽的大小和形状均相同，多个所述滚动体的大小和形状也均为相同。
本发明还提供一种压缩机，其包括前任一项所述的压缩机的曲轴轴承，还包括转子组件，所述曲轴轴承的上端面上的所述滚动体能够承接所述转子组件。
优选地，
还包括曲轴，所述曲轴穿设于所述曲轴轴承中，以通过所述曲轴轴承对所述曲轴进行支撑。
优选地，
所述转子组件还具有中间容纳孔，所述曲轴还穿设于所述转子组件的中间容纳孔中。
优选地，
所述压缩机为旋转压缩机。
本发明提供的一种压缩机的曲轴支撑和压缩机具有如下有益效果：
本发明通过在轴承本体的上端面设置凹槽，并且设置滚动体置于所述凹槽中，使得滚动体与转子组件的下端面相接、以通过滚动体对转子组件进行支撑，能够在旋转压缩机工作时，转子组件和曲轴同时高速旋转，滚珠在轴承卡槽和 转子组件端面之间自由滚动的同时可以起到支撑转子组件的作用，便有效限制了曲轴长轴挠度的产生，即转子组件产生的不平衡力虽然作用在曲轴上，但转子组件受到了滚珠的支撑不能倾斜，故曲轴长轴也不能发生弯曲现象，能够提升曲轴旋转的稳定性，有效防止和减小曲轴与轴承之间的磨损，并且还能防止定子和转子组件气隙减少，防止产生干涉碰撞和电磁噪声等情况。
附图说明
图1是本发明的压缩机的曲轴轴承的正面结构示意图；
图2是图1的压缩机的曲轴轴承的俯视结构示意图；
图3是本发明的压缩机的内部截面结构示意图；
图4是图3中的A部分的局部放大结构示意图。
图中附图标记表示为：
10、曲轴轴承；1、轴承本体；11、上端面；12、凹槽；2、转子组件；21、中间容纳孔；3、滚动体；4、曲轴。
具体实施方式
如图1-4所示，本发明提供一种压缩机的曲轴轴承，其包括：
轴承本体1，所述轴承本体1的上端面位于压缩机的转子组件2的下方，且在所述轴承本体1的上端面11还设置有凹槽12，所述凹槽12中设置有滚动体3，所述滚动体3能够与所述转子组件2的下端面相接、以通过所述滚动体3支撑所述转子组件2。
本发明通过在轴承本体的上端面设置凹槽，并且设置滚动体置于所述凹槽中，使得滚动体与转子组件的下端面相接、以通过滚动体对转子组件进行支撑，能够旋转压缩机工作时，转子组件和曲轴同时高速旋转，滚珠在轴承卡槽和转子组件端面之间自由滚动的同时可以起到支撑转子组件的作用，便有效限制了曲轴长轴挠度的产生，即转子组件产生的不平衡力虽然作用在曲轴上，但转子组件受到了滚珠的支撑不能倾斜，故曲轴长轴也不能发生弯曲现象，能够提升曲轴旋转的稳定性，有效防止和减小曲轴与轴承之间的磨损，并且还能防止定子和转子组件气隙减少，防止产生干涉碰撞和电磁噪声等情况。
现有常规的转子组件不与上轴承直接接触，有一定的距离，压缩机运行时， 转子组件高速旋转，由于转子组件自身的不平衡(上下端面安装有平衡块，产生旋转离心力，用于平衡曲轴偏心部和活塞的旋转不平衡)或者装配上的误差，导致曲轴产生扰度，即曲轴长轴弯曲，进而转子组件倾斜。
现有的曲轴转子组件仅依靠上轴承内孔支撑曲轴，曲轴长轴与转子组件内孔过盈配合，曲轴弯曲则转子组件倾斜，本发明通过上轴承上端面的滚珠支撑(类似平面支撑)，转子组件下端面受到约束，不能倾斜，进而曲轴扰度也无法产生。
优选地，
所述凹槽12为圆弧形凹槽，所述滚动体3为球形滚珠，所述球形滚珠能够在所述圆弧形凹槽中滚动。这是本发明的凹槽和滚动体的优选结构形式，能够使得球形滚珠在弧形凹槽中自由地滚动，使得滚珠上端面承载转子组件能够随转子组件一起转动，而下端设置在轴承的凹槽中而不会发生转动，起到了有效的支撑转子组件的作用，减小曲轴的弯曲度。
优选地，
所述凹槽12为多个，所述滚动体3也为多个、且与所述凹槽12一一对应设置。通过多个凹槽以及多个滚动体且二者一一对应设置，能够使得在轴承上端面的多处位置形成对转子组件支撑的结构，使得转子组件能够有效地被运动地支撑在轴承上，提高支撑效果，进一步减小曲轴发生弯曲的情况发生。
优选地，
多个所述凹槽12在所述上端面11上成径向均匀地分布。这是本发明的凹槽在轴承的上端面上的优选设置方式，即在径向均匀分布能够实现沿径向对转子组件进行支撑的作用，提高对转子组件的均匀支撑力，进一步防止曲轴长轴发生弯曲的现象。
优选地，
多个所述凹槽12在所述上端面11上呈放射状均匀地分布。这是本发明的凹槽在轴承的上端面上的进一步的优选设置方式，即在上端面上放射状均匀分布能够实现进一步沿径向对转子组件进行均匀支撑的作用，提高对转子组件的均匀支撑力，进一步防止曲轴长轴发生弯曲的现象。
滚珠在轴承卡槽和转子组件端面之间自由滚动的同时可以起到支撑转子组件的作用和防止转子组件倾斜的作用，因滚珠呈圆周线性布置，可有效支撑 转子组件平面，防止其左右摆动，也间接限制了曲轴长轴挠度的产生，即转子组件产生的不平衡力虽然作用在曲轴上，但转子组件受到了滚珠的支撑不能倾斜，故曲轴长轴也不能发生弯曲现象。
优选地，
多个所述凹槽12的大小和形状均相同，多个所述滚动体3的大小和形状也均为相同。这是本发明的多个凹槽和多个滚动体的进一步优选的结构形式，即多个凹槽结构均相同，滚动体结构均相同，能够进一步提高轴承上端面对转子组件各处的均匀支撑效果，进一步防止曲轴长轴发生弯曲的现象发生。
本发明的旋转压缩机轴承设置平面滚动支撑结构，即通过轴承平面设置卡槽，卡槽圆周线性分布，卡槽内安装滚珠，滚珠可以在卡槽内自由滚动。转子组件装配时，其下端面与滚珠贴合，旋转压缩机工作时，转子组件和曲轴同时高速旋转，滚珠在轴承卡槽和转子组件端面之间自由滚动的同时可以起到支撑转子组件的作用和防止转子组件倾斜的作用，因滚珠呈圆周线性布置，可有效支撑转子组件平面，防止其左右摆动，也间接限制了曲轴长轴挠度的产生，即转子组件产生的不平衡力虽然作用在曲轴上，但转子组件受到了滚珠的支撑不能倾斜，故曲轴长轴也不能发生弯曲现象。
附图1介绍了上轴承结构示意图，轴承上平面设置半圆形卡槽，卡槽圆周线性分布，卡槽内可以安装滚珠，滚珠可以在卡槽内自由滚动。
附图4介绍了滚珠装配示意图，滚珠安装在上轴承半圆形卡槽里面，可自由滚动，转子组件装配时下端面与滚珠贴合，即滚珠起到支撑转子组件的作用，约束其轴向运动，同时，因滚珠为圆周线性排列，每一个滚珠均与转子组件下端面点接触，同一个平面多点接粗起到约束转子组件倾斜的作用，间接防止了曲轴长轴弯曲扰度的产生。
附图3介绍了旋转压缩机，转子组件内孔和曲轴长轴过盈装配，曲轴高速旋转过程中，上、下轴承约束其旋转运动，转子组件和曲轴的轴向运动则通过安装在上轴承端面卡槽里面圆周线性分布的滚珠与转子组件下端面多点接触来约束，圆珠支撑的作用有2点，其1为限制转子组件和曲轴的轴向运动，其2为防止转子组件倾斜而间接避免了长轴产生弯曲挠度。
本发明还提供一种压缩机，其包括前任一项所述的压缩机的曲轴轴承，还包括转子组件2，所述曲轴轴承10的上端面11上的所述滚动体3能够承接所 述转子组件2。本发明能够在旋转压缩机工作时，转子组件和曲轴同时高速旋转，滚珠在轴承卡槽和转子组件端面之间自由滚动的同时可以起到支撑转子组件的作用，便有效限制了曲轴长轴挠度的产生，即转子组件产生的不平衡力虽然作用在曲轴上，但转子组件受到了滚珠的支撑不能倾斜，故曲轴长轴也不能发生弯曲现象，能够提升曲轴旋转的稳定性，有效防止和减小曲轴与轴承之间的磨损，并且还能防止定子和转子组件气隙减少，防止产生干涉碰撞和电磁噪声等情况。
优选地，还包括曲轴4，所述曲轴4穿设于所述曲轴轴承10中，以通过所述曲轴轴承10对所述曲轴4进行支撑。这是本发明的压缩机的进一步优选的结构形式，通过曲轴能够对气缸内的滚子起到驱动作用，以起到压缩的作用，通过曲轴轴承能够有效地对曲轴起到支承的作用。
优选地，所述转子组件2还具有中间容纳孔21，所述曲轴4还穿设于所述转子组件2的中间容纳孔21中。通过该结构能够使得曲轴从转子组件处获得动力而被转子组件带动一同转动，从而为进一步驱动气缸内的滚子转动提供条件。
优选地，所述压缩机为旋转压缩机。这是本发明的压缩机的优选结构形式。
本发明提供一种旋转压缩机，上轴承端面设置圆周线性分布卡槽(即凹槽12)，用于装配滚珠，滚珠在卡槽中可自用做旋转滚动，转子组件下端面安装位置与滚珠外圆接触，多个滚珠点接触起到支撑的作用，限制其轴向运动的同时防止转子组件发生倾斜，避免曲轴长轴产生弯曲挠度。
其转子组件通过内孔与曲轴长轴过盈进行组合装配，转子组件Z向直线运动和绕X、Y旋转运动通过与多个滚珠点接触约束，曲轴绕Z旋转运动通过上轴承和下轴承约束。转子组件绕X、Y旋转运动通过滚珠约束后，间接限制了曲轴长轴的弯曲挠度的产生，提高曲轴高速旋转稳定性，降低了曲轴与上轴承的磨损程度，提高了压缩机可靠性，同时也避免了转子组件和定子气隙减少，防止产生干涉碰撞和电磁噪声。
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。以上所述仅是本发明的优选实施方式，应当指出，对于本技 术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和变型，这些改进和变型也应视为本发明的保护范围。

Claims (10)

  1. 一种压缩机的曲轴轴承，其特征在于：包括：
    轴承本体(1)，所述轴承本体(1)的上端面位于压缩机的转子组件(2)的下方，且在所述轴承本体(1)的上端面(11)还设置有凹槽(12)，所述凹槽(12)中设置有滚动体(3)，所述滚动体(3)能够与所述转子组件(2)的下端面相接、以通过所述滚动体(3)支撑所述转子组件(2)。
  2. 根据权利要求1所述的压缩机的曲轴轴承，其特征在于：
    所述凹槽(12)为圆弧形凹槽，所述滚动体(3)为球形滚珠，所述球形滚珠能够在所述圆弧形凹槽中滚动。
  3. 根据权利要求1或2所述的压缩机的曲轴轴承，其特征在于：
    所述凹槽(12)为多个，所述滚动体(3)也为多个、且与所述凹槽(12)一一对应设置。
  4. 根据权利要求1-3中任一项所述的压缩机的曲轴轴承，其特征在于：
    多个所述凹槽(12)在所述上端面(11)上成径向均匀地分布。
  5. 根据权利要求4所述的压缩机的曲轴轴承，其特征在于：
    多个所述凹槽(12)在所述上端面(11)上呈放射状均匀地分布。
  6. 根据权利要求1-5中任一项所述的压缩机的曲轴轴承，其特征在于：
    多个所述凹槽(12)的大小和形状均相同，多个所述滚动体(3)的大小和形状也均为相同。
  7. 一种压缩机，其特征在于：包括权利要求1-6中任一项所述的压缩机的曲轴轴承，还包括转子组件(2)，所述曲轴轴承(10)的上端面(11)上的所述滚动体(3)能够承接所述转子组件(2)。
  8. 根据权利要求7所述的压缩机，其特征在于：还包括曲轴(4)，所述曲轴(4)穿设于所述曲轴轴承(10)中，以通过所述曲轴轴承(10)对所述曲轴(4)进行支撑。
  9. 根据权利要求8所述的压缩机，其特征在于：所述转子组件(2)还具有中间容纳孔(21)，所述曲轴(4)还穿设于所述转子组件(2)的中间容纳孔(21)中。
  10. 根据权利要求7所述的压缩机，其特征在于：所述压缩机为旋转压缩机。
PCT/CN2018/121595 2018-10-23 2018-12-17 一种压缩机的曲轴轴承和压缩机 WO2020082546A1 (zh)

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