Energy conversion device and rotor engine based on fluid volume changing

Abstract

The invention relates to an energy conversion device and rotor engine based on fluid volume changing. The energy conversion device comprises a stator and a rotor located in an inner cavity of the stator, wherein a closed working cavity is formed between the stator and the rotor, four planetary rollers are uniformly arranged on the circumference of the rotor, an outer contour line of the cross section of the working cavity is a closed line by connecting a first arc line, a second arc line, a third arc line, a fourth arc line, a first curve, a second curve, a third curve, a fourth curve, a fifthcurve, a sixth curve, a seventh curve and a eighth curve, an inner contour line of the cross section of the working cavity is a circle with the axis of the rotor as the circle center and the radius of the rotor as the radius, and a contour line of the cross section of each planet roller is a closed line formed by connecting a fifth arc line, a sixth arc line, a seventh arc line, an eighth arc line, a ninth curve, a tenth curve, a eleventh curve and a twelfth curve. According to the energy conversion device, the requirements of variable fluid volume, reliable fluid sealing and coaxial rotationof the rotor relative to the stator inner cavity can be met at the same time, so that the performances of the energy conversion device and the rotor engine are improved.

Description

technical field [0001] The invention relates to an energy conversion device and a rotary engine based on fluid volume changes, which can convert fluid pressure potential energy into drive torque, or convert input torque into fluid kinetic energy or potential energy through fluid volume changes, and are mainly used in internal combustion engines, steam turbines, Water turbines, compressors, air motors, hydraulic motors, fluid pumps, vacuum pumps and other fields. Background technique [0002] At present, many fluid energy conversion devices realize energy conversion or fluid transportation through the change of fluid volume, and the change of fluid volume is mostly realized by the relative rotational motion between the stator and the rotor, such as rotary engines, steam turbines, water turbines , compressors, air motors, hydraulic motors, hydraulic pumps, vacuum pumps, etc. There are many types of mechanical structures for these devices, including blade type, impeller type, ...

AI Technical Summary

Problems solved by technology

[0004] Defects: poor sealing, low conversion efficiency, complex structure

[0006] Defects: poor sealing, low conversion efficiency, large vibration

[0008] Defects: There is sliding friction between the rotary vane, the rotor and the pump chamber. The rotary vane not only performs linear reciprocating motion, but also rotates eccentrically. The sealing performance is not high, the speed is not high, and the wear, energy consumption and vibration are relatively large.

[0010] Defects: poor sealing, poor dynamic balance performance, high wear, high vibration and noise, low speed, low energy efficiency

[0012] Defects: processing and assembly are difficult, the shape of the screw and the dynamic meshing method determine that the sealing effect is difficult to improve, the gap leakage is large, the cost is high, the volume is large, the displacement is small, and the vibration is large in some cases

[0014] Defects: The shape of the rotor and the way of meshing make it difficult to improve the sealing effect, the gap leakage is large, the energy efficiency is not high, and the processing is difficult

[0016] Defects: poor sealing, large gap leakage, low compression ratio, eccentric movement of the moving plate limits the speed increase, and has vibration, and the volume flow is low

[0018] Disadvantages: lower compression ratio affects fuel combustion efficiency, loud noise

[0020] Disadvantages: The conversion efficiency of the turbine to gas kinetic energy is low, and it is easy to cause turbulence to the jet

[0022] Defects: The three tops of the triangular rotor and the stator wall are always in the sliding friction of constantly changing positions, and the wear is large, which affects the sealing effect of the fluid, high fuel consumption and high emissions; low compression ratio, low fuel combustion efficiency and low emissions High; the shape of the long and narrow combustion chamber also affects the speed of flame propagation, which further affects the combustion efficiency of fuel

The rotor rotates eccentrically in the stator relative to the stator. While revolving around the center of the output shaft, the rotor also rotates around the center of the protruding shaft on the output shaft. Therefore, it is difficult to provide good lubrication and cooling for the rotor, and the vibration and energy loss are large.

The compression ratio of the engine is low, so that the combustion cannot be sufficient, the combustion efficiency is low, and the emission is difficult to meet the standard. The shape of the long and narrow combustion chamber also affects the speed of flame propagation, which further affects the combustion efficiency of the fuel. Moreover, the low compression ratio leads to the use of ignition instead of The compression ignition method is adopted, that is, gasoline can only be used as fuel and diesel oil cannot be used

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