Oil separation barrel, screw compressor and air conditioning unit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing semi-hermetic screw compressors with single-wall oil separation barrels face inefficiencies in oil separation due to nonuniform gas flow and increased dimensions or costs with cyclone separation structures, which are not suitable for miniaturization.
Innovation Solution
An oil separation barrel with a barrel body featuring multiple layers of circumferential walls, including an inner and outer oil separation cavity, where the output gas flow is filtered and redirected multiple times to enhance uniformity and separation efficiency, reducing noise and vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-wall oil separation barrel with a single oil separation and filtration screen is used, then the structure is simple, but the oil separation efficiency is low due to nonuniform gas flow
Solution Approach 1:
The oil separation barrel is divided into multiple functional regions through inner and outer circumferential walls, creating a multi-chamber structure with distinct oil separation cavities. This segmentation allows different zones to handle gas flow at different stages, improving overall separation efficiency while maintaining structural organization
Solution Approach 2:
The patent transitions from a single-wall cylindrical structure to a multi-layered wall structure with radial chambers. By adding the dimensional complexity of concentric chambers arranged radially around the central axis, the system achieves better flow distribution and separation performance without proportionally increasing overall size
2Productivity
If a cyclone separation structure is added to improve oil separation efficiency, then the separation efficiency increases, but the machine body becomes excessively long and manufacturing cost increases
Solution Approach 1:
The patent combines multiple separation mechanisms (centrifugal separation, impact separation, and filtration) into a single integrated multi-chamber barrel structure. The inner and outer circumferential walls create chambers that work together in sequence, merging several separation functions into one compact unit rather than adding separate components
Solution Approach 2:
The inner circumferential wall and inner oil separation cavity are nested within the outer circumferential wall structure. The multi-chamber design allows one chamber to be positioned inside another, creating a compact nested arrangement that maximizes separation functionality within a limited radial and axial space
3Productivity
If a cyclone separation structure is added to improve oil separation efficiency, then the separation efficiency increases, but the manufacturing cost increases
Solution Approach 1:
The barrel is segmented into standardized chambers defined by inner and outer circumferential walls. This modular segmentation allows for simplified manufacturing processes where each chamber can be formed using similar techniques, reducing overall manufacturing complexity and cost compared to a monolithic complex structure
Solution Approach 2:
The multi-chamber structure serves multiple functions simultaneously: centrifugal separation, impact separation, filtration, and noise reduction. By designing a single structure that performs multiple functions rather than separate components for each function, the manufacturing cost is reduced while achieving comprehensive oil separation performance
4Volume of stationary object
If the output pipe is located at the upper end inside the oil separation barrel, then the structure is compact, but the gas flow field becomes nonuniform affecting separation efficiency
Solution Approach 1:
The patent redistributes the output ports across multiple dimensions - both radially (through the circumferential wall) and axially (at different heights). This multi-dimensional arrangement of output ports ensures uniform gas flow distribution throughout the chambers while maintaining compact overall dimensions
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 multi-layered structure improves oil separation efficiency through centrifugal and impact separation, while also reducing noise and vibration by creating a uniform flow field and shielding noise effectively.
Implementation Method 1
An output gas flow is filtered by the oil separation and filtration structure, then enters the oil separation cavity
Implementation Method 2
the outer oil separation cavity is an annular cavity for forming circular motion of the output gas flow around the axis of the oil separation barrel in the outer oil separation cavity
Implementation Method 3
the output gas flow impacts the circumferential wall surfaces in the oil separation barrel multiple times, which can further improve the efficiency of oil separation
Data Source
AI summary
Disclosed is an oil separation barrel, which includes a barrel body and an oil separation and filtration structure provided in the barrel body, the barrel body provided with an oil separation cavity and an output port. An output gas flow is filtered by the oil separation and filtration structure, then enters the oil separation cavity, and finally is output from the output port. At least part of a barrel wall of the barrel body forming the oil separation cavity includes two or more layers of circumferential walls. The output gas flow flows in the oil separation cavity in such a manner that it changes the advance direction multiple times, which can make the flow field uniform and reduce noise and vibration; and the output gas flow impacts the circumferential wall surfaces in the oil separation barrel multiple times, which can further improve the efficiency of oil separation.