Planetary Rotary Fluid Motor Rolling Piston Mechanism
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Solution Overview
Problem
Conventional fluid motors and compressors face issues with complex structures, high energy consumption, mechanical wear, and maintenance challenges due to sliding friction, leading to inefficiencies and environmental concerns.
Innovation Solution
A planetary rotary type fluid motor or engine and compressor utilizing rolling friction with a stator, rotor, and center sun wheel drum, featuring a cylindrical roller piston wheel and rotary valve sheet mechanism for efficient power transmission and sealing, reducing frictional wear and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If sliding friction structures are used in conventional fluid motors and compressors, then mechanical wear and energy consumption increase, but the structure becomes more complex and maintenance becomes difficult
Solution Approach 1:
The piston wheel is divided into multiple independent piston units arranged radially around the crankshaft. Each piston unit operates independently in its own chamber, allowing the system to process fluid continuously while maintaining a compact structure. This segmentation enables the conversion of reciprocating motion into rotational motion more efficiently, reducing energy loss.
Solution Approach 2:
Instead of using a conventional crankshaft mechanism to convert rotational motion to reciprocating motion and back, this invention inverts the approach by having pistons directly drive the crankshaft rotation through their linear movement. The pistons move in and out, directly pushing and pulling the crankshaft, eliminating the need for complex connecting rods and bearings associated with traditional sliding friction structures.
2Power
If reciprocating piston mechanisms are used, then power output becomes unstable with pulse wave characteristics, but the mechanical structure becomes more complex with additional components
Solution Approach 1:
Multiple piston units are combined and synchronized around the crankshaft, with their power strokes overlapping in time. This merging of multiple power sources smooths out the pulse wave characteristics, creating a more continuous and stable torque output. The pistons are arranged so that as one piston completes its stroke, another is beginning its power stroke, ensuring continuous power delivery to the crankshaft.
Solution Approach 2:
The system maintains continuous useful action by having multiple pistons operating in different phases of their cycles simultaneously. This ensures that there is always at least one piston in its power stroke, providing continuous torque to the crankshaft. The overlapping operation of multiple pistons eliminates the dead points and idle periods characteristic of single-piston reciprocating engines, maintaining steady power output throughout the rotation.
3Reliability
If radial seal sheets are used in triangular-rotor engines, then sealing between chambers deteriorates over time, but the structure becomes simpler initially
Solution Approach 1:
The invention replaces the mechanical radial seal sheet system with a self-sealing chamber design. The chambers are sealed by the piston walls and chamber geometry itself, rather than relying on separate seal sheets that contact and wear against surfaces. This eliminates the sliding contact between seals and chamber walls, preventing the wear and leakage problems associated with traditional radial seal sheets.
Solution Approach 2:
The piston units act as flexible barriers that maintain sealing between chambers through their movement and positioning. The pistons naturally conform to their chamber spaces and maintain contact with chamber walls through pressure differentials and mechanical guidance, providing reliable sealing without rigid seal sheets. This flexible sealing approach adapts to wear and maintains effectiveness over time.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a simplified, high-efficiency, and stable power output with reduced noise and vibration, facilitating easy maintenance and wide adaptability across various fluid types and pressures, while minimizing environmental impact.
Implementation Method 1
The present invention adopts rolling friction
Data Source
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AI summary
A planetary rotary type rotation device comprises a stator, a rotor, and a center sun wheel drum (10). The stator includes a hollow cylinder block (1) having a cylinder. The rotor includes a main shaft (3), planetary piston wheel fixation flanges (9), and a planetary piston wheel (8). The two planetary piston wheel fixation flanges (9) are symmetrically fixed to the main shaft (3). The center sun wheel drum (10) is disposed between the two planetary piston wheel fixation flanges (9) and fitted over the main shaft (3). An annular piston space (19) is formed between an outer circular surface of the center sun wheel drum (10) and a cylinder wall of the cylinder of the cylinder block (1). The planetary piston wheel (8) is a cylindrical roller. The cylindrical roller is disposed in the annular piston space (19) in a rolling manner. Both ends of the cylindrical roller are fixed to the planetary piston wheel fixation flanges (9). A planetary rotary type fluid motor or engine, their operation method, and a planetary rotary type compressor or pump are disclosed. The planetary rotary type rotation device has a simple structure, a small volume, and a light weight.