Whole ellipse and ellipse envelope type double-screw rotor, compressor and expansion machine

A twin-screw and elliptical technology, applied in the direction of machines/engines, rotary piston machines, mechanical equipment, etc., can solve problems such as insufficient space for design parameters

Active Publication Date: 2020-01-14
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a full ellipse and ellipse envelope type twin-screw rotor and compressor, expander, rotor profile for the problems of cusps in the twin-screw rotor profile and insufficient de

Method used

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  • Whole ellipse and ellipse envelope type double-screw rotor, compressor and expansion machine
  • Whole ellipse and ellipse envelope type double-screw rotor, compressor and expansion machine
  • Whole ellipse and ellipse envelope type double-screw rotor, compressor and expansion machine

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Embodiment Construction

[0072] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0073] see figure 1 , in the original screw rotor profile, A in the left male rotor profile 1 A 2 A 3 A 4 A 5 It is single-tooth tooth shape, single-tooth tooth shape A 1 A 2 A 3 A 4 A 5 The origin of the profile line of the male rotor O m to rotate and tooth shape A 1 A 2 A 3 A 4 A 5 End to end, so repeat n 1 After the number of times, the left male rotor profile is formed, where n 1 Indicates the number of teeth, in figure 1 middle n 1 Take it as 5. Similarly, the profile line of the female rotor on the right is also formed by the single-tooth profile B 1 B 2 B 3 B 4 The only decision. In the original tooth shape, A 1 A 2 A 3 A 4 A 5 From arc segment A 1 A 2 , the point engages the epicycloid segment A 2 A 3 , arc segment A 3 A 4 , epicycloid segment A 4 A 5 Composition, B 1 B 2 B 3 B 4 from arc segment B 1 B 2 ,...

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Abstract

The invention discloses a whole ellipse and ellipse envelope type double-screw rotor, a compressor and an expansion machine. The rotor comprises a male rotor and a female rotor capable of realizing mutual meshing during the rotating process; the tooth profile of the single tooth of a male rotor profile line is composed of a tooth root circular arc section, an ellipse envelope line segment, an ellipse arc segment, the ellipse arc segment and the ellipse envelope line segment sequentially connected end to end; the tooth profile of the single tooth of the male rotor profile line is composed of atooth tip circular arc segment, the ellipse arc segment, the ellipse envelope line segment, the ellipse envelope line segment and the ellipse segment sequentially connected end to end; the adjacent curve segments of the male rotor profile line and the female rotor profile line are continuous at the intersected point and are also continuous in slope; according to the teeth number of the male and female rotor profile lines, rotation is carried out to generate the tooth profile of the single tooth is generated, and the tooth profiles are sequentially connected end to end to generate a complete female and male rotor profile line. The rotor profile lines are composed of ellipses and envelope lines of the ellipses, cusps are eliminated, and according to the demand of the design working condition, the rotor shape is flexible and adjustable to improve the performance.

Description

technical field [0001] The invention belongs to the field of mechanical design, and relates to a full-ellipse and ellipse-enveloping twin-screw rotor, a compressor and an expander. Background technique [0002] Twin-screw compressor is a positive displacement rotary pump, which can be used to obtain high-pressure fluid and transport fluid working medium, and is widely used in modern industry. The twin-screw compressor has inherited many advantages such as long service life of the rotary machine, reliable operation, low vibration, low noise, stable operation, and no surge phenomenon. At the same time, it has the characteristics of no wearing parts such as air valves, forced suction and exhaust, and simple processing. , is the main type of units such as air compressors and commercial refrigerators. The core components of a twin-screw compressor are two rotors. The selection of the rotor profile determines the structure of the rotor, thereby affecting the overall operating per...

Claims

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Application Information

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IPC IPC(8): F04C18/16
CPCF04C18/084F04C18/16F04C2240/20F04C2250/20
Inventor 李丹童何志龙韦炜林栋邢子文
Owner XI AN JIAOTONG UNIV
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