Scroll Compressor Oil-Cooling Circuit for Faster Temperature Control
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Solution Overview
Problem
Existing refrigeration systems face inefficiencies in cooling scroll compressors, leading to high temperatures and potential system interruptions due to slow cooling processes, which can shorten the compressor's lifespan and disrupt operations.
Innovation Solution
A refrigeration system design incorporating a scroll compressor, first and second condensers, and a heat exchange device, where the high-temperature oil from the oil pool is used to cool the compressor, enhancing cooling speed and efficiency compared to using refrigerant alone, and including features like an oil separator and temperature sensors for optimized operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If refrigerant flowing back is used to cool the scroll compressor, then the cooling process is slow, but the system structure remains simple
Solution Approach 1:
The patent introduces cooling water as an intermediary substance to cool the scroll compressor directly. The cooling water flows through a water channel formed by the housing and cooling water plate, providing rapid heat removal from the compressor body and exhaust port, thereby resolving the slow cooling issue without compromising system reliability
Solution Approach 2:
The patent replaces the traditional refrigerant-based cooling mechanism with a water-based cooling system. By substituting refrigerant with cooling water in the heat transfer process, the system achieves faster cooling speeds and improved reliability while maintaining the overall mechanical structure
2Productivity
If high-speed rotation of scroll compressor is used to achieve refrigeration, then refrigeration efficiency is improved, but heat generation increases causing high temperature
Solution Approach 1:
The patent segments the cooling function into dedicated components: a cooling water plate with specific water channels positioned to cool critical areas (compressor body and exhaust port) separately from the main refrigeration cycle. This segmentation allows targeted heat removal without interfering with the high-speed compression process
Solution Approach 2:
The cooling water system operates continuously alongside the compression process, providing constant heat removal from the scroll compressor. The water channel design ensures uninterrupted cooling flow, maintaining optimal temperatures even during high-speed rotation and sustained refrigeration operation
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 accelerates the cooling process, reduces the risk of high temperatures, extends the compressor's lifespan, and ensures smooth operation by utilizing oil for cooling, thereby improving refrigeration efficiency and preventing system interruptions.
Implementation Method 1
the first condenser condenses the high-temperature and high-pressure refrigerant discharged from the scroll compressor
Implementation Method 2
the condensed refrigerant enters the heat exchange device for continuing cooling
Implementation Method 3
The high temperature oil in the oil pool can enter the second condenser through the first oil outlet for cooling
Implementation Method 4
the cooled low-temperature oil can cool the scroll compressor
Data Source
AI summary
Embodiments of the present application provide a refrigeration system, which includes a scroll compressor, a first condenser, a second condenser and a heat exchange device; wherein the scroll compressor includes a housing, and a low pressure chamber, a high pressure chamber and an oil pool that are disposed in the housing; the high pressure chamber is connected to the oil pool; the housing is provided with a gas suction port, a liquid-spraying enthalpy increasing port, a first gas exhaust port and a first oil outlet; the first gas exhaust port is configured to connect to the first condenser, to convey condensed refrigerant to the heat exchange device, one end of the gas suction port is connected to the scroll compressor, and the other end thereof is connected to the heat exchange device, to absorb the refrigerant that flows back after heat exchange by the heat exchange device; the first oil outlet is connected to an inlet of the second condenser, and an outlet of the second condenser is connected to the liquid-spraying enthalpy increasing port, oil cooled by the second condenser provides cooling for the scroll compressor.