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Secondary envelope surface type rotary air compressor

A secondary envelope, gas compressor technology, applied in the direction of rotary piston pumps, rotary piston machines, liquid fuel engines, etc., can solve the problems of stator line wear, leakage increase, compressor failure, etc., to achieve extended use Longer life, improved anti-friction and anti-wear capabilities, and improved friction and wear conditions

Inactive Publication Date: 2002-08-14
重庆工学院 +1
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AI Technical Summary

Problems solved by technology

However, since the motion of the rotor of the "Secondary Enveloping Surface Rotary Gas Compression Device" is actually a planetary motion around the stator surface, a large centrifugal force will be generated during high-speed operation, and the four vertices of the rotor are in line with the stator shape. The wires are in line contact in theory, and at the same time there is a large relative sliding speed during high-speed operation, so in actual operation, it is very easy to cause wear on the four corners of the rotor and the stator profile, and this wear is fatal. Yes, because this kind of wear makes the leakage increase, which directly leads to the failure of the compressor, which has been confirmed in our practice

Method used

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Embodiment Construction

[0015] When the speed ratio is 3:4, the creation radius = 48mm, and the eccentricity = 12mm, the four top corners of the rotor are respectively processed into the same arc-shaped grooves, and the centers of the arcs are respectively at the theoretical profile of the rotor. Four vertices, each arc groove has an oil hole to communicate with the rotor bearing lubrication system, as attached Figure 4 shown. A cylinder is installed in each arc-shaped groove to roll and fit with it. The radius of the cylinder is equal to the translation distance of the stator profile from the theoretical profile to the actual profile. The translation distance takes into account the size, lubrication and accumulation of the stator and rotor. The length of the cylinder is the thickness of the rotor, the gap between the arc groove and the cylinder is 0.05-0.8mm, and the intersection of the arc groove at the top corner of the rotor and the rotor profile line and the adjacent The rotor profile is modif...

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Abstract

A secondary envelope type rotary gas compressor features that the corners of rotor is changed into arc recess crossed with the contour of rotor, the adjacent rotor contour is modified for smooth linking between the modified contour and rotor contour, and a cylinder is installed in each arc recess communicated with the lubricating system of bearing, resulting in rolling contact between rotor and stator. Its advantages include good size compensation, high antiwear and sealing performance and long service life.

Description

[0001] Technical Field: The present invention relates to a rotary gas compression device. Background technique: [0002] The Chinese utility model patent number is ZL92214815.5, and the name of the invention is "Secondary Enveloping Surface Rotary Gas Compression Device". Bearings are respectively installed in the through holes of the cylinder head, and the eccentric shaft is supported by the bearing on the cylinder head. There is an eccentric wheel on the eccentric shaft located in the cavity of the cylinder body. The rotor, the convex envelope surface of the rotor and the concave envelope surface of the cylinder cavity are conjugate surfaces, and there are air intake holes and exhaust holes in the cylinder body. Its structure diagram can be found in the appendix figure 1 and 2 . For its principle, see the attached image 3 , stator surface and center O 1 , with radius R 1 The small circles are fixedly connected, the rotor profile and the center O 2 , with radius R 2 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/02
Inventor 韦云隆曹兴进
Owner 重庆工学院
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