Dry Filter Buffer Chamber Layout for Uniform Refrigerant Flow
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Solution Overview
Problem
Existing dry filters suffer from low utilization rate and easy accumulation of impurities on filter plates due to pressure differences and design limitations, leading to reduced performance and shortened service life.
Innovation Solution
A dry filter design featuring a first and second filter layer with a buffer chamber and clamping jaws to stabilize the second filter plate, allowing for uniform refrigerant flow and improved impurity distribution, along with a molecular sieve for enhanced filtration, and symmetrical structure for flexible installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the second filter plate abuts against the second end cover, then the structure is simple and easy to manufacture, but impurities accumulate in the middle of the first filter plate and the utilization rate of the filter plate is low
Solution Approach 1:
The invention divides the filter plate into multiple segments (first filter plate and second filter plate) positioned at different locations. The first filter plate is positioned away from the end cover while the second filter plate abuts against the end cover, allowing refrigerant to flow through both filter plates in sequence. This segmentation enables the system to maintain simple structure while improving filter plate utilization by distributing filtration across multiple plates.
Solution Approach 2:
The invention introduces an intermediary component (the first filter plate positioned away from the end cover) that mediates between the refrigerant flow and the second filter plate. This intermediary filter plate prevents direct accumulation of impurities on the second filter plate while maintaining the simple abutting structure against the end cover, thus resolving the contradiction between structural simplicity and filter utilization.
2Device complexity
If the outlet is provided in the middle of the cross section, then the structure is compact, but a low-pressure area forms causing refrigerant to flow to the central part of the second filter plate regardless of flowing direction
Solution Approach 1:
The invention segments the filtration function across two filter plates positioned at different locations relative to the outlet. By having the first filter plate away from the end cover and the second filter plate at the end cover, the system maintains compact structure while creating pressure distribution that guides refrigerant flow through both plates effectively, improving flow control efficiency.
Solution Approach 2:
The invention transitions from a single-filter-plate design to a two-filter-plate design positioned at different spatial dimensions (one away from end cover, one at end cover). This dimensional change allows the system to maintain compactness while creating a more effective three-dimensional flow path that improves refrigerant distribution and reduces unwanted central flow concentration.
3Stress or pressure
If filtered impurities accumulate in the middle of the first filter plate, then the pressure increases, but the service life of the product is shortened
Solution Approach 1:
The invention segments the filtration function across two filter plates, distributing the impurity accumulation burden. The first filter plate positioned away from the end cover captures initial impurities, while the second filter plate at the end cover provides secondary filtration. This segmentation prevents excessive pressure buildup and extends product service life by distributing wear and contamination across multiple components.
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 increases the utilization rate of the filter plates, reduces impurity accumulation, and simplifies assembly and installation, ensuring stable refrigerant flow and extended product life while maintaining high filtration accuracy.
Implementation Method 1
a molecular sieve is provided in the dry chamber... can absorb moisture in a refrigerant
Implementation Method 2
a filter layer and a dry layer provided in the barrel 1' in sequence... filtered and soluble substances can be effectively prevented from entering key components
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
Provided is a dry filter, including: a barrel (10); a first end cover (20) and a second end cover (30), sealing two ends of the barrel (10) respectively; a first filter layer (100), provided at an end, close to the first end cover (20), in the barrel (10); a dry layer (40), provided in the barrel (10) and located at a side, away from the first end cover (20), of the first filter layer (100), the dry layer (40) including a first filter plate (41) close to the first filter layer (100) and a second filter plate (42) away from the first filter layer (100), the first filter plate (41), the second filter plate (42) and a barrel wall of the barrel (10) forming a dry chamber; and a first fixing structure (50), defining the position of the second filter plate (42) in the barrel (10), such that a buffer chamber (60) is formed between the second filter plate (42), an inner wall of the barrel (10) and the second end cover (30). The dry filter solves the problems of easy accumulation of impurities on a filter plate of an existing dry filter and low utilization rate.