Fluid machinery, heat exchange equipment, and operating method for fluid machinery
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Solution Overview
Problem
Traditional piston-type compressors suffer from increased suction and exhaust resistance, noise, lateral forces leading to inefficiency, vibration, and reduced sealing properties due to an unfixed eccentric distance between the cylinder and rotating shaft, resulting in instability and low volume efficiency.
Innovation Solution
The fluid machinery features a rotating shaft and cylinder with a fixed eccentric distance, a piston component with a variable volume cavity, and a cross slider mechanism, where the piston slides vertically and rotates with the shaft to maintain stable operation, reduce vibration, and enhance sealing by ensuring a regular volume change pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a crankshaft drives a piston to make reciprocating motion, then the compressor can compress gas or liquid, but the eccentric mass is large causing large vibration
Solution Approach 1:
The patent transforms the traditional reciprocating motion into continuous rotational motion. The piston rotates continuously within the cylinder along an eccentric trajectory, eliminating the start-stop reciprocating motion that causes vibration. This dynamic transformation maintains compression capability while significantly reducing vibration and improving operational stability.
2Power
If a crank-connecting rod mechanism is used, then the piston can be driven to work, but the structure becomes complex
Solution Approach 1:
The patent extracts and eliminates the crank-connecting rod mechanism from the system. By using a direct eccentric rotation mechanism where the piston rotates within the cylinder, the complex intermediate transmission components are removed, simplifying the overall structure while maintaining the piston drive capability.
3Power
If suction and exhaust valves are installed, then gas compression can be achieved, but suction and exhaust resistance increase
Solution Approach 1:
The patent removes the suction and exhaust valves from the system. The eccentric rotational motion of the piston naturally creates pressure differentials that enable continuous intake and discharge of gas without requiring valve mechanisms, thereby eliminating the resistance and energy loss associated with valves.
4Adaptability or versatility
If an unfixed eccentric distance between cylinder and rotating shaft is used, then the mechanism is flexible, but the operation becomes unstable
Solution Approach 1:
The patent establishes a fixed eccentric distance between the cylinder and rotating shaft, creating a stable and repeatable eccentric rotational motion pattern. This fixed geometric relationship ensures consistent compression cycles and improves operational reliability while maintaining the effectiveness of the compression function.
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
This configuration stabilizes the piston's operation, reduces vibration, and increases the compressor's efficiency by minimizing clearance volume and maintaining consistent volume changes, thereby enhancing the reliability of the heat exchange equipment.
Implementation Method 1
the piston is provided with a sliding groove in which the rotating shaft moves, and the piston rotates along with the rotating shaft under the driving of the rotating shaft
Data Source
AI summary
A fluid machine, heat exchanger, and operating method of fluid machine. The fluid machine includes: a rotation shaft (10), a cylinder (20), and a piston assembly (30). The rotation shaft (10) and the cylinder (20) are eccentrically disposed relative to each other and an eccentric distance is fixed. The piston assembly (30) has a variable volume chamber (31). Because the eccentric distance between the rotation shaft (10) and the cylinder (20) is fixed, the rotation shaft (10) and the cylinder (20) rotate about their respective axes thereof during motion and the position of center of mass remains unchanged, so that the piston assembly (30) is allowed to rotate stably and continuously when moving in the cylinder (20); and vibration of the fluid machine is mitigated, a regular pattern for changes in the volume of the variable volume cavity is ensured.