Receiver Dryer Cylindrical Filter Design to Reduce Flow Resistance
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Solution Overview
Problem
The existing receiver dryers in refrigeration systems face high flow resistance due to the compactness of non-woven fabric filters, which leads to reduced filter precision and increased load on the system, causing impurities to deposit on the filter surfaces and further increase resistance, affecting the performance of the refrigeration system.
Innovation Solution
The receiver dryer incorporates a filter cartridge with a cylindrical filter part and mating portions that provide a larger effective filter area, reducing flow resistance while maintaining filter precision by filtering refrigerant at least once during its flow, and using an annular sealing protrusion and elastic sealing members to prevent refrigerant leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the non-woven fabric filter is made with high compactness to ensure filter precision, then the filter precision is improved, but the flow resistance increases
Solution Approach 1:
The filter element is transformed from a flat two-dimensional structure to a three-dimensional cylindrical structure. This dimensional change allows the filter to provide sufficient filtration area while maintaining lower flow resistance through the radial flow path, resolving the contradiction between filter precision and flow resistance.
Solution Approach 2:
The patent employs porous filter materials with optimized pore structures that allow efficient particle capture while maintaining low flow resistance. The porous structure enables the filter to achieve high filtration precision without requiring excessive compactness that would increase flow resistance.
2Reliability
If the non-woven fabric filter has high flow resistance, then impurities are deposited on the filter surface, but the flow capacity is weakened and flow resistance further increases
Solution Approach 1:
The cylindrical three-dimensional filter structure provides a radial flow path that prevents impurity deposition on a single surface. The refrigerant flows radially through the filter element, distributing the flow evenly and preventing the clogging that occurs in flat filter structures, thereby maintaining flow capacity while ensuring reliable filtration.
Solution Approach 2:
The filter design ensures continuous and uniform refrigerant flow through the entire filter element volume via radial flow. This continuous action prevents localized impurity accumulation and maintains consistent filtration effectiveness and flow capacity throughout the filter's operational life.
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 reduces flow resistance and prevents impurity deposition on the filter surfaces, ensuring the operation performance of the refrigeration system by maintaining filter precision and reducing the impact of impurities on the filter's flow capability.
Implementation Method 1
The molecular sieve 111 can dry the refrigerant, thereby preventing an ice plug phenomenon from being caused when the refrigerant having excessive water passes through a throttle valve
Implementation Method 2
the filter cartridge includes a filter part having filter capability... the refrigerant is filtered at least once during a process of flowing from the first connecting port to the second connecting port
Data Source
AI summary
A receiver dryer includes a first body and a second body, one end of the second body away from the first body defining first and second connecting ports. The receiver dryer includes a filter cartridge including a first mating portion, a second mating portion, and a filter part at a middle portion; the first mating portion fits with an inner wall of the second body, one space allowing refrigerant to flow is formed between the filter part and the inner wall of the second body, the second mating portion is connected to the second connecting port, the space between the filter part and the inner wall of the second body communicates with the first connecting port, an inside of the filter part communicates with the second connecting port via the second mating portion, and refrigerant is filtered at least once when flowing between the first and second connecting ports.