Screw tooth form of double-screw air compressor

An air compressor and twin-screw technology, applied to mechanical equipment, machines/engines, liquid fuel engines, etc., can solve the problems of large leakage triangle area, poor sealing effect, long sealing line length, etc., and achieve small leakage triangle area , low noise and short sealing line

Inactive Publication Date: 2005-02-23
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large number of heads and complex curves, the processing is complicated, the processing volume is large, and the length of the sealing line is very long, the area of ​​the leakage triangle is large, the sealing effect is not good, and the displacement of all existing twin-screw air compressors is low. Not big, although it can transmit gas continuously, the flow pulsation is small, after all, the pressure is low, the flow is small, the cost is high, and the efficiency of the whole machine is low

Method used

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  • Screw tooth form of double-screw air compressor
  • Screw tooth form of double-screw air compressor
  • Screw tooth form of double-screw air compressor

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Embodiment Construction

[0013] Below in conjunction with accompanying drawing, the present invention is described in detail.

[0014] figure 1 The shape of the radial section of the three-start screw of the present invention is shown, and the tooth profile of each screw of the three-start screw is equal and uniformly distributed along the circumference. Addendum circle curve is the center o 1 , the arcs at both ends are arc ab and arc ef respectively, and the root circle curve on the opposite side of the addendum circle is the circle center o 1 The arc line cd of the arc (the radian of this arc is adjustable, and the limit value is zero), the point b at one end of the arc line ab of the addendum and the point c at the end cd of the arc line cd of the root is composed of a generalized cycloid bc, and the root circle The point d at the other end of the arc line cd and the point e at the end of the arc line ef are formed by a generalized cycloid de. The radius of the addendum arc line ab is three tim...

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Abstract

Profiles of screw rods of a double screw rod air compressor are involved. One of the said screw rods is of single-start thread and another is of three-start one. The top curve in radial section of the said rods is a part of circle with zero as extreme value. The root curve on the opposite of the said rods is a part of circle too. Between one end point of the top curve and one end point of the root curve a general cycloid line is formed symmetrically. The radium of the top curve is three times as one of the root curve. The guiding range of the three-start rod is three times as one of the single-start rod. This design has short sealing line, less leakage, higher pressure, and greater exhaust volume, working efficiently.

Description

technical field [0001] The invention relates to an air compressor, in particular, the invention relates to a screw tooth shape of a twin-screw air compressor. Background technique [0002] All existing twin-screw air compressors have multiple heads and complex tooth shapes. For example, some have four teeth to six teeth, and some have five teeth to six teeth. Each tooth is composed of as many as seven curves, and at least four curves, such as the GHH-shaped line in Germany and the Fusheng-shaped line in Taiwan. Due to the large number of heads and complex curves, the processing is complicated, the processing volume is large, and the length of the sealing line is very long, the area of ​​the leakage triangle is large, the sealing effect is not good, and the displacement of all existing twin-screw air compressors is low. Not big, although it can transport gas continuously, the flow pulsation is small, after all, the pressure is low, the flow is small, the cost is high, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/16F04C29/00
Inventor 陈行陶国良
Owner ZHEJIANG UNIV
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