Resilient Suction Duct for Scroll Compressor Filtration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing scroll compressors face challenges in efficiently filtering refrigerant gas and managing refrigerant flow, leading to potential contamination and reduced performance due to the lack of effective filtration mechanisms within the compressor assembly.
Innovation Solution
A suction duct with a spring-biased sealing face is integrated into the compressor housing, featuring a resilient plastic material that deflects to create a sealing mechanism around the inlet, and includes a screen to filter large particles before the refrigerant reaches the motor, enhancing the filtration and cooling efficiency of the compressor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a suction duct is installed in the compressor housing to filter refrigerant gas, then filtration efficiency is improved, but the device complexity increases
Solution Approach 1:
The suction duct is integrated directly into the compressor housing, merging the filtration function with the structural housing component. This eliminates the need for a separate filtration device while maintaining effective refrigerant gas filtering capability.
Solution Approach 2:
The suction duct serves multiple functions: it acts as both a structural component of the compressor housing and a filtration mechanism. The screen within the duct filters refrigerant gas while the duct itself maintains the structural integrity and flow path management.
2Reliability
If a screen is added to filter large particles in the refrigerant flow, then contamination is reduced, but the device complexity increases
Solution Approach 1:
The screen filtration mechanism is integrated within the suction duct structure, combining the filtration function with the existing flow management component. This eliminates the need for a separate filtration device while maintaining effective particle removal capability.
3Reliability
If the suction duct is made of resilient plastic material to create a sealing mechanism, then sealing effectiveness is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The suction duct is made from resilient plastic material that can elastically deform to accommodate dimensional variations in the housing. This material property change allows the duct to maintain effective sealing despite variations in housing dimensions, reducing the impact of manufacturing tolerances.
Solution Approach 2:
The resilient plastic material allows the suction duct to flexibly adapt to the housing internal surface, creating an effective seal through elastic deformation rather than requiring precise rigid fitting. This flexibility compensates for manufacturing variations in the housing 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 solution effectively filters out contaminants and directs cooling refrigerant to the motor, improving the compressor's performance by ensuring a high percentage of refrigerant passes through the filter, thereby reducing contamination and enhancing operational efficiency.
Implementation Method 1
The spring bias mechanism is integral with the suction duct and may act upon the housing in spaced relation to the inlet to spring bias the sealing face against the internal surface of the housing.
Implementation Method 2
The suction duct is formed of a resilient plastic material that is resiliently deflected as installed in the housing.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A suction duct for a compressor such as a scroll compressor may include a plastic ring body with a metal screen heat staked in a window of the ring body to filter refrigerant gas entering the motor cavity. The ring body may be in surrounding relation of the motor and resiliently compressed in the housing through intermittent contact with the inner housing surface to better seal around the inlet port. Oil drain channels and stabilizing ribs may be along the outside surface of the ring body.