Pump Body Assembly Sliding Fit Oil Flow
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Solution Overview
Problem
The piston in rotary cylinder compressors impedes the flow of oil liquid, leading to increased power consumption due to friction and resistance during the oil pressing process.
Innovation Solution
A pump body assembly with a piston communication passage and flexible groove is introduced, allowing for improved oil liquid flow by creating a sliding fit between the rotation shaft and the piston, reducing resistance and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the rotation shaft slides with respect to the piston during oil pressing, then the oil liquid is transferred between cavities, but the fluency of the oil liquid is impeded and power consumption increases
Solution Approach 1:
The piston is segmented into multiple sections with independent sliding holes, allowing oil liquid to flow through multiple separate paths rather than being impeded by a single continuous structure. This segmentation reduces resistance and improves fluency during the oil pressing process.
Solution Approach 2:
A lubricating oil layer is introduced as an intermediary substance between the rotation shaft and piston surfaces. This oil layer reduces direct friction and resistance, enabling smoother relative motion and improving oil liquid fluency during compression.
2Productivity
If the inner wall of the sliding hole presses the oil liquid, then the oil liquid is transferred within the two cavities, but the fluency of the oil liquid is impeded
Solution Approach 1:
The sliding hole structure is modified with localized features including oil grooves and flexible grooves at specific positions. These local modifications create preferential flow paths that reduce resistance and improve oil liquid transfer efficiency without compromising the overall pressing function.
Solution Approach 2:
The piston design incorporates flexible grooves that can dynamically adapt to pressure changes and relative motion between the rotation shaft and piston. This dynamic structure maintains optimal flow characteristics during the varying conditions of the oil pressing cycle.
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 design enhances the fluency of oil liquid transfer, thereby reducing the power consumption of the pump body assembly by minimizing friction and resistance during the oil pressing process.
Implementation Method 1
the rotation shaft and the piston, so as to form a sliding fit between the rotation shaft and the piston
Data Source
Figure 1
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AI summary
Disclosed are a pump body assembly and a fluid machine. The pump body assembly comprises a rotation shaft (30) and a piston (20) provided with a sliding hole (2011), wherein at least a portion of the rotation shaft (30) penetrates into the sliding hole (2011), during rotation of the piston (20) with the rotation shaft (30), and the sliding hole (2011) is in sliding fit with the rotation shaft (30), the piston (20) is provided with a piston communication passage communicated with the sliding hole (2011). The pump body assembly can solve the problem that the piston impedes a flow of oil liquid during use of a rotary cylinder compressor.