Compressor Oil Separation Mechanism for Motor Cooling
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Solution Overview
Problem
Conventional compressors suffer from reduced electric motor efficiency and volumetric efficiency due to high temperature and high pressure refrigerant gas heating the motor and compressing mechanism, and high oil content in the refrigerant gas affecting cycle performance.
Innovation Solution
Incorporation of an oil separating mechanism with a cylindrical space that separates oil from refrigerant gas, guiding high temperature and high pressure refrigerant gas away from the electric motor and compressing mechanism, and discharging separated oil into a separate container space to prevent buildup and enhance separation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If high temperature and high pressure refrigerant gas flows through the electric motor for cooling, then the electric motor is cooled, but the electric motor efficiency is deteriorated
Solution Approach 1:
The discharge space is divided into a first space (for high temperature refrigerant gas) and a second space (for low temperature refrigerant gas), allowing different temperature zones to cool different components separately, preventing hot gas from directly heating the electric motor while maintaining cooling function
Solution Approach 2:
The harmful high temperature refrigerant gas is extracted from the cooling path and directed to a separate first discharge space, removing the harmful thermal effect from the electric motor cooling process while maintaining the necessary cooling function through low temperature gas
2Temperature
If high temperature discharge gas flows through the lower portion of the compressing mechanism, then the compressing mechanism is cooled, but the suctioned refrigerant gas is heated and volumetric efficiency is reduced
Solution Approach 1:
The discharge space is segmented into first and second spaces with separate cooling paths, allowing the compressing mechanism to be cooled by low temperature gas from the second space while the high temperature gas is directed elsewhere, preventing reheat of suctioned refrigerant
Solution Approach 2:
The harmful high temperature refrigerant gas is extracted from the compressing mechanism cooling path and directed to the first discharge space, while low temperature gas from the second space is used to cool the compressing mechanism without reheating the suctioned refrigerant
3Device complexity
If oil is not separated from refrigerant gas, then the system is simpler, but cycle performance is deteriorated
Solution Approach 1:
The system uses the kinetic energy and centrifugal force of the discharged refrigerant gas itself to separate oil through a cylindrical space, eliminating the need for external power or complex mechanical separators while achieving effective oil removal that improves cycle performance
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 configuration enhances electric motor efficiency, maintains high volumetric efficiency in the compression chamber, and reduces oil circulation, leading to improved compressor performance by preventing refrigerant gas heating and ensuring stable oil separation.
Implementation Method 1
a cylindrical space (41) in which the refrigerant gas orbits
Data Source
AI summary
According to a compressor of the present invention, the compressor further comprises an oil separating mechanism 40 which separates oil from the refrigerant gas discharged from the compressing mechanism 10, the oil separating mechanism 40 includes a cylindrical space 41 in which the refrigerant gas orbits, an inflow portion 42 for flowing the refrigerant gas discharged from the compressing mechanism 10 into the cylindrical space 41, a sending-out port 43 for sending out, from the cylindrical space 41 to the one container space 32, the refrigerant gas from which the oil is separated, and an exhaust port 44 for discharging the separated oil from the cylindrical space 41 into the other container space 32. According to this configuration, efficiency of the electric motor 20 is enhanced, volumetric efficiency is enhanced, and low oil circulation is realized.