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Rotor profile of double-screw compressor

A compressor rotor and twin-screw technology, which is applied in the field of compressors, can solve problems affecting compressor performance and lack, and achieve the effects of eliminating sharp points, small area, and reducing noise and vibration

Inactive Publication Date: 2014-02-26
NANJING COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to design a twin-screw compressor rotor profile with smooth transmission and reduced vibration and noise to solve the problem that the performance of the existing twin-screw compressor is affected by the lack of an ideal profile.

Method used

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  • Rotor profile of double-screw compressor

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] Such as figure 1 shown.

[0016]A new twin-screw compressor rotor profile, including the male rotor profile 1 and the female rotor profile 2, the gear ratio of the male rotor and the female rotor is 4-6:5-8, which can be adjusted according to low, medium and high exhaust Choose different combinations of pressure conditions such as 4:5, 4:6, 5:6, 5:7, 6:7, 6:8, etc. The tooth shape of the male rotor and the female rotor is a bilateral asymmetrical tooth shape with pin-tooth arcs, arcs and arc envelopes, ellipses and ellipse envelopes, and quadratic curves such as rolling arcs as basic units. The male rotor is composed of five to six quadratic curve units A1B1, B1C1, C1D1, D1E1, E1F1, and F1G1 (F1G1 can be omitted for five-segment curves), and the female rotor is composed of A2B2, B2C2, C2D2, D2E2, E2F2, and F2G2. Five-six quadratic curve un...

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Abstract

The invention discloses a rotor profile of a double-screw compressor. The rotor profile of the double-screw compressor comprises a male rotor profile (1) and a female rotor profile (2). The rotor profile is characterized in that teeth of a male rotor and a female rotor are bilateral asymmetric teeth taking a pin tooth arc, a circular arc, an arc enveloping curve, an ellipse, an ellipse enveloping curve and a rolling arc secondary curve as basic constitutional units. By adopting the rotor profile of the double-screw compressor, the efficiency of a main machine of the screw compressor can be improved by 4%, and the input specific powder of a whole unit achieves the first level of energy efficiency in the national standard.

Description

technical field [0001] The invention relates to a compressor technology, in particular to a twin-screw compressor rotor structure, in particular to a twin-screw compressor rotor profile with smooth transmission, low vibration and noise. Background technique [0002] The rotor profile of a twin-screw compressor is the basis of the performance of the screw compressor, and a good rotor profile fundamentally determines the overall performance of the screw compressor. The yin-yang rotor profile is composed of several different primary or secondary mathematical curves, such as arcs and arc envelopes, point (straight line) cycloids, ellipses and ellipse envelopes, parabolas and parabola envelopes, etc. Yin-yang rotors The curves corresponding to each segment are analyzed according to the meshing envelope principle, and the different curves are connected tangentially and transition smoothly. [0003] An excellent rotor profile requires smooth tooth shape (low flow loss), closed con...

Claims

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Application Information

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IPC IPC(8): F04C29/00F04C18/16
Inventor 徐辉金宏春夏苏建蔡建红
Owner NANJING COMPRESSOR
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