Two-Stage Compressor Gas Storage Chamber Flow Resistance
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Solution Overview
Problem
Existing double-stage rotor compressors with enhanced vapor injection experience increased power consumption and reduced performance due to high refrigerant flow resistance and suction loss, primarily caused by reverse gas flow and longer suction channels.
Innovation Solution
A two-stage compressor design featuring a gas storage chamber between stages, where the refrigerant from the first-stage compression chamber flows through a larger gas storage chamber before entering the second-stage compression chamber, reducing flow resistance and suction loss by buffering the refrigerant flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If refrigerant flows directly from the first-stage compression chamber to the second-stage compression chamber through a long suction channel, then the compression process can be continuous, but the flow resistance increases and suction loss increases
Solution Approach 1:
The patent introduces a gas storage chamber as an intermediary component between the first-stage and second-stage compression chambers. This intermediate chamber receives refrigerant from the first stage and supplies it to the second stage, eliminating the need for a long direct suction channel. The gas storage chamber acts as a buffer that maintains continuous compression while reducing flow resistance and suction losses.
2Device complexity
If the suction inlet of the second-stage compression chamber is located at a lower position below the height center, then the structural arrangement can be compact, but the suction resistance increases
Solution Approach 1:
The patent relocates the suction inlet from a lower vertical position to the side wall of the gas storage chamber, utilizing the radial dimension instead of the vertical dimension. This dimensional change allows the suction inlet to be positioned optimally without increasing vertical height, thereby reducing suction resistance while maintaining compact structural arrangement.
3Speed
If high-speed refrigerant flows directly through the medium-pressure flow channel to the second-stage suction inlet, then the flow speed can be maintained, but reverse gas flow occurs and flow resistance increases
Solution Approach 1:
The gas storage chamber serves as a cushioning chamber that decelerates high-speed refrigerant from the first stage before it enters the second stage. The chamber's larger volume and strategic positioning allow the refrigerant to slow down and equalize pressure, preventing reverse gas flow and reducing flow resistance in the medium-pressure flow channel.
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 reduces reverse flow, decreases flow resistance, and enhances suction efficiency, thereby improving the overall performance and reducing power consumption of the compressor.
Implementation Method 1
refrigerant flowing out of the first-stage compression chamber flows through the gas storage chamber and enters the second-stage compression chamber; the flow area of the gas storage chamber is larger than an area of a gas outlet of the first-stage compression chamber
Data Source
AI summary
Disclosed are a compressor and an air conditioner having same. The compressor includes: a first-stage cylinder, including a first-stage compression chamber; and a second-stage cylinder, including a second-stage compression chamber and a gas storage chamber. Refrigerant flowing out of the first-stage compression chamber flows through the storage chamber and enters into the second-stage compression chamber, and a flow area of the gas storage chamber is larger than an area of a gas outlet of the first-stage compression chamber. The compressor effectively solves problems that power consumption of the compressor is increased and performance is reduced due to large resistance loss in the cylinder of the compressor.