Interleaved Droplet Separator Blades for Heat Pump Efficiency
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Solution Overview
Problem
Existing droplet separators for heat pumps face challenges in efficiently separating vapor from droplets without causing damage to the compressor wheel and maintaining system purity, while also minimizing energy losses and production complexity.
Innovation Solution
A droplet separator design featuring two sets of blades on separate carriers, arranged in an interleaved manner with obtuse angles between their portions, which are easier to produce and assemble, effectively redirecting gas flow and preventing droplets from passing through, thus ensuring efficient separation without excessive resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a droplet separator is designed with multiple blades to improve droplet separation efficiency, then separation performance is improved, but device complexity and production difficulty increase
Solution Approach 1:
The droplet separator is divided into a first carrier with first number of blades and a second carrier with second number of blades. These separate carriers can be produced independently using injection molding, avoiding the complexity of producing a single integrated component with all blades. The carriers are then joined to form the complete separator with interleaved blade arrangement.
Solution Approach 2:
The first and second carriers are joined such that blades from the first carrier are arranged between blades from the second carrier, creating an interleaved nested structure. This arrangement maximizes droplet separation efficiency while maintaining manufacturability through separate component production.
2Reliability
If droplet separator blades are arranged to maximize separation efficiency, then droplet removal is improved, but energy losses due to flow resistance increase
Solution Approach 1:
The blades are designed with specific local geometries including leading edges, trailing edges, and intermediate portions with defined angles. The leading edges have specific orientation angles relative to the flow direction, and intermediate portions have angles optimized to balance droplet interception with flow resistance minimization. This local optimization allows efficient separation while controlling energy losses.
3Strength
If the droplet separator is designed as a single integrated component, then structural integrity is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The droplet separator is segmented into multiple carriers that can be manufactured separately using injection molding processes. Each carrier can be produced independently with its set of blades, simplifying the manufacturing process and allowing for easier production and assembly compared to a single integrated component.
Solution Approach 2:
Multiple separately manufactured carriers are joined together to form the complete droplet separator assembly. This merging of separately produced components achieves the functional equivalence of an integrated structure while benefiting from the manufacturing simplicity and cost advantages of separate production.
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 provides a robust, efficient, and cost-effective droplet separation mechanism that minimizes energy losses and production complexity, ensuring long-term stability and high performance in heat pump systems.
Implementation Method 1
effectively redirecting gas flow and preventing droplets from passing through
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A droplet separator includes a first number of blades (101-108) arranged on a first carrier (100), each blade of the first number of blades comprising a first portion (101a) and a second portion (101b) which have a first obtuse angle (110) formed between them; and a second number of blades arranged on a second carrier (200), each blade (201-208) of the second number of blades comprising a first portion (201a) and a second portion (201b) which have a second obtuse angle (210) formed between them, the first carrier (100) and the second carrier (200) being joined such that a blade (201) of the second number of blades is arranged between two blades (101, 102) of the first number of blades.