Reciprocating Compressor Cover Layout for Intermediate-Pressure Injection
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Solution Overview
Problem
Existing reciprocating compressors face challenges in efficiently injecting fluid at an intermediate pressure into multiple compression mechanisms from a single external source, leading to inefficiencies in energy consumption and performance, particularly in climate-control systems.
Innovation Solution
A reciprocating compressor design incorporating a housing with a housing cover featuring intermediate-fluid ports and passages, allowing fluid at an intermediate pressure to be distributed to multiple compression mechanisms through channels and apertures, enabling selective fluid communication with cylinder storage plenums and pistons.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If fluid is injected at intermediate pressure into multiple compression mechanisms from a single external source, then energy efficiency is improved, but device complexity increases due to the need for intermediate-fluid ports, passages, and distribution channels
Solution Approach 1:
The housing cover is segmented into multiple functional regions with dedicated intermediate-fluid ports and passages for each compression mechanism. This segmentation allows independent fluid distribution to each mechanism while maintaining a single external source, resolving the contradiction between energy efficiency and structural complexity.
Solution Approach 2:
The housing cover acts as an intermediary component that receives intermediate-pressure fluid from a single external source and distributes it to multiple compression mechanisms through internally formed passages and channels. This intermediary structure enables efficient fluid distribution without requiring separate external connections for each mechanism.
2Productivity
If intermediate-pressure fluid is distributed to multiple compression mechanisms, then productivity is improved by ensuring sufficient discharge-pressure refrigerant supply, but loss of substance increases due to fluid distribution through multiple passages and channels
Solution Approach 1:
Multiple fluid distribution functions are merged into a single housing cover structure with integrated passages and channels. This consolidation reduces the number of separate fluid pathways, minimizing fluid loss while ensuring adequate refrigerant supply to all compression mechanisms.
Solution Approach 2:
The housing cover serves multiple functions simultaneously: it distributes intermediate-pressure fluid to multiple compression mechanisms, provides structural support, and contains the fluid distribution network. This multi-functionality reduces overall system complexity and minimizes fluid loss compared to separate dedicated 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
Enhances energy efficiency by minimizing energy consumption while ensuring sufficient discharge-pressure refrigerant supply, optimizing performance in climate-control systems.
Implementation Method 1
The intermediate pressure is greater than the suction pressure and less than the discharge pressure. The first fluid storage plenum and the second fluid storage plenum are configured to store the fluid at the intermediate pressure therein.
Data Source
AI summary
A compressor includes a housing, a first compression mechanism and a second compression mechanism disposed in the housing, and a housing cover fixed to the housing. Both the first compression mechanism and the second compression mechanism are configured to compress a working fluid from a suction pressure to a discharge pressure. The first compression mechanism includes a first cylinder housing having a first fluid storage plenum. The second compression mechanism includes a second cylinder housing having a second fluid storage plenum. The housing cover defines an intermediate-fluid port in fluid communication with the first fluid storage plenum via a first intermediate-fluid passage and the second fluid storage plenum via a second intermediate-fluid passage. Working fluid at an intermediate pressure enters the intermediate-fluid port. The intermediate pressure is greater than the suction pressure and less than the discharge pressure.