Baffle plate for compressor, compressor, and refrigeration apparatus
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Solution Overview
Problem
In rotary compressors, the fluctuation of refrigerant or lubricant oil leads to instability in the oil sump, causing excessive oil output and thermal resistance issues, which affect the efficiency of refrigeration and heating systems.
Innovation Solution
A baffle plate is introduced, connected to a non-rotating member, extending radially to block gas flow and create a stable space for the oil sump, reducing oil fluctuation and output, and enhancing the coefficient of performance (COP) of the compressor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the compressor operates with a rotating rotor, then the compression function is achieved, but the refrigerant oil or lubricant oil fluctuates severely and moves to the upper space of the motor
Solution Approach 1:
The invention divides the compressor internal space by introducing a baffle plate that segments the cavity into different zones. The baffle plate is positioned to create a stable oil storage region separated from the turbulent compression zone, preventing oil from being carried upward by the gas flow while maintaining the rotation-driven compression function.
Solution Approach 2:
The baffle plate acts as an intermediary structure between the rotating rotor and the oil sump. It mediates the interaction by providing a physical barrier that blocks the direct path of oil particles being entrained in the rotating gas flow, thereby stabilizing the oil while allowing the compression process to continue.
2Productivity
If the oil level fluctuates severely, then the oil is discharged with the compressed gas, but the thermal resistance of the system pipeline increases
Solution Approach 1:
The baffle plate provides preliminary anti-action by preventing oil from entering the discharge flow in the first place. By stabilizing the oil level and creating a separate oil retention zone, the baffle plate stops the harmful effect (oil in discharge) before it occurs, thereby preventing the subsequent energy loss from increased thermal resistance in the system pipeline.
3Stability of the object's composition
If a baffle plate is arranged to stabilize the oil sump, then the oil fluctuation is reduced, but the device complexity increases
Solution Approach 1:
The baffle plate is designed with local quality by positioning it specifically in the region where oil stabilization is most needed, rather than throughout the entire compressor. The plate's geometry and placement are optimized to provide maximum stabilization effect with minimal structural complexity, addressing only the specific local problem of oil fluctuation near the oil sump.
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 baffle plate stabilizes the oil sump, reduces oil droplets and thermal resistance, improves refrigeration and heating capacities, and increases the COP of the compressor, while minimizing noise and pressure pulsation.
Implementation Method 1
a plate body of the baffle plate extends from the through hole to the direction deviating from the axis of the through hole, i.e., the baffle plate extends radially in the whole circumferential direction, thereby physically blocking the gas flow
Data Source
AI summary
A baffle plate for a compressor, a compressor, and refrigeration apparatus are provided. The baffle plate has a plate body, a through hole and a connection part. The through hole is formed in the plate body. The plate body extends from the through hole in a direction deviating from the axis of the through hole. The connection part is connected with the plate body and is used for connecting the plate body to a non-rotating member. A fixed baffle plate is arranged in the compressor, to physically block the gas flow and form a space for stabilizing the refrigerant oil or lubricant oil on one side of the baffle plate corresponding to the oil sump. The space can isolate the disturbance from spiral flow of a lower cavity to the oil sump caused by the rotation of the motor when the compressor operates.