Blade type pneumatic motor with variable expansion ratio

An air motor, expansion ratio technology, applied in rotary piston engines, engine components, machines/engines, etc., can solve the problem of reducing the energy conversion efficiency of compressed working fluid, unable to ensure full expansion of working fluid in real time, and lack of working fluid state control capability and other problems to achieve the effect of solving the problem of working fluid leakage, low cost and good control
CN103195480BInactive Publication Date: 2015-01-07JILIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JILIN UNIV
Publication Date
2015-01-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a blade type pneumatic motor with a variable expansion ratio. The blade type pneumatic motor comprises a front machine cover, a rear machine cover, a front end cover, a main exhaust hole rotation rear end cover, a rotor, a stator, a blade and a driving mechanism seal housing; a main exhaust hole, an inner ring groove, a top groove and a driven gear are machined on the main exhaust hole rotation rear end cover; the rotor and the stator are eccentrically arranged in an non-internally tangent manner; and a driving mechanism on the rear machine cover is packaged by the driving mechanism seal housing. According to practical requirements, under the driving of the driving mechanism, the volume at the moment of expansion is changed through the change of the position of the main exhaust hole, so that the variable adjustment of the expansion ratio is realized; and simultaneously, the external leakage of a working medium is alleviated through a leakage working medium backflow passage. The system is simple in structure and convenient to process.
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Description

technical field

[0001] The invention belongs to the category of pneumatic motors in the technical field of machinery, and in particular relates to a vane-type pneumatic motor with variable expansion ratio. Background technique

[0002] The vane air motor is a prime mover with compressed working fluid as the power source. It is a device that converts pressure energy into mechanical energy by using the expansion of compressed working fluid. It generally has a casing, a machine cover, a stator, a rotor, blades, front and rear It is composed of end cover, bearing, bushing, thrust ring and other parts. A working chamber is formed between the stator and the rotor. After the compressed working fluid enters the working chamber, the pressure can generate torque on the blades to make the rotor rotate and do work.

[0003] The existing vane-type air motors basically have a sliding vane eccentric structure, and two protruding air holes are provided at the minimum distance between the mo...

Claims

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