A fully meshed spiral tooth with gradient wall thickness

Abstract

The invention discloses a fully meshed vortex tooth with a gradually varied wall thickness. A meshing profile of a static vortex tooth (1) is formed by smoothly connecting four curves, which comprises an equal-distance curve FH of a first reducing base circle involute, an equal-distance curve FG of a first circle involute, an equal-distance curve GM of a second circle involute and an equal-distance curve MN of a second reducing base circle involute; a dynamic vortex tooth rotates by 180 degrees relative to a central O point, and then is completely superposed with the static vortex tooth; the thickness sigma of the vortex tooth is gradually increased from the outer ring to the center; and in a working process, the dynamic vortex tooth is correctly meshed with the static vortex tooth. The fully meshed vortex tooth with the gradually varied wall thickness disclosed by the invention can increase air inflow of a scroll compressor, increases a compression ratio, increases an area utilization rate, increases strength of the vortex tooth in an air exhaust area, is beneficial for designing and processing the vortex tooth, and improves working property of the vortex tooth.

Description

technical field [0001] The invention belongs to the technical field of compressor engineering, in particular to a scroll tooth profile of a scroll compressor. Background technique [0002] The scroll machinery has the characteristics of low vibration and noise, few parts, no suction and exhaust valves, and high efficiency. It is widely used in the fields of air conditioning and refrigeration. The design of the scroll profile has a great influence on the performance of the scroll compressor. [0003] China applied for an invention patent (Application No. 200910016941.3), disclosing a vortex type gas-liquid mixed delivery pump. The base circle involute, but the scroll tooth profile in this invention adopts the base circle involute and the variable diameter base circle involute, there is a meshing gap between the moving scroll and the fixed scroll during the movement, and The tip of the tooth head does not participate in the meshing; China's application for an invention patent...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of incomplete meshing of the scroll teeth with gradual wall thickness and complicated design of the spiral tooth profile with gradual wall thickness, the present invention increases the intake air volume of the scroll compressor, increases the compression ratio, and satisfies the requirements of different pressure chambers. To meet the requirements of the strength of the rotor, increase the strength of the scroll teeth, improve the area utilization rate, and propose a fully meshing spiral with gradual wall thickness

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