Dry Filter Buffer Chamber Design to Reduce Impurity Accumulation
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Solution Overview
Problem
The existing one-way dry filters in refrigerating pipelines suffer from low utilization rate of filter plates due to easy accumulation of impurities, leading to increased pressure and reduced service life.
Innovation Solution
The dry filter design includes a first fixing structure that defines the position of the second filter plate, creating a buffer chamber between the filter plate, barrel wall, and end cover, which relieves pressure differences and allows for more uniform refrigerant flow, increasing the utilization rate and preventing impurity accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the second filter plate abuts against the second end cover, then the structure is simple, but impurities accumulate in the middle of the first filter plate and pressure increases
Solution Approach 1:
The invention divides the internal space by introducing a buffer chamber between the second filter plate and the second end cover. This segmentation creates distinct functional zones: the dry chamber for molecular sieve drying and the buffer chamber for pressure relief and uniform flow distribution, preventing impurity accumulation and extending service life.
Solution Approach 2:
The buffer chamber acts as an intermediary space between the second filter plate and the second end cover. It mediates the refrigerant flow by relieving pressure differences and ensuring uniform distribution, thereby preventing direct harmful effects of pressure buildup and impurity accumulation on the filter plates.
2Device complexity
If the outlet is in the middle of the cross section, then the structure is simple, but the utilization rate of the first filter plate is low
Solution Approach 1:
The invention introduces a radial flow dimension by having refrigerant flow uniformly from the barrel wall toward the center through the buffer chamber. This transforms the flow pattern from direct axial flow (which causes central accumulation) to a combination of radial and axial flow, maximizing the utilization of the first filter plate area.
Solution Approach 2:
The buffer chamber segments the flow path, allowing refrigerant to first distribute uniformly from the walls and then flow axially through the first filter plate. This segmentation ensures that the entire filter plate area is effectively utilized for filtration.
3Length of moving object
If refrigerant flows directly through the filter plates, then the flow path is short, but pressure difference increases due to impurity accumulation
Solution Approach 1:
The buffer chamber serves as an intermediary zone that relieves pressure differences before refrigerant enters the dry chamber. By distributing pressure uniformly and preventing direct high-velocity flow against the filter plates, it reduces the pressure difference across the filtration system and prevents rapid impurity accumulation.
Solution Approach 2:
The buffer chamber performs preliminary action by pre-distributing the refrigerant flow uniformly across the filter plate area before the refrigerant enters the dry chamber. This preliminary uniform distribution prevents localized high-velocity flow that would cause rapid impurity accumulation and pressure buildup.
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 design enhances the utilization rate of the filter plates, stabilizes refrigerant flow, and extends the service life by reducing impurity accumulation and pressure increases.
Implementation Method 1
a molecular sieve is provided in the dry chamber
Implementation Method 2
a filter layer and a dry layer provided in the barrel in sequence, wherein the dry layer comprises a first filter plate and a second filter plate
Data Source
AI summary
Provided is a dry filter, including: a barrel; a first end cover and a second end cover; a first filter layer, provided at an end, close to the first end cover (20), in the barrel (10); a dry layer, provided in the barrel and located at a side, away from the first end cover, of the first filter layer, the dry layer including a first filter plate and a second filter plate, the second filter plate and a barrel wall of the barrel forming a dry chamber; and a first fixing structure, defining the position of the second filter plate in the barrel, such that a buffer chamber is formed between the second filter plate, an inner wall of the barrel and the second end cover. The dry filter solves the problems of easy accumulation of impurities on a filter plate of an existing dry filter and low utilization rate.