Scroll Compressor Oil Outlet Channel Design
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Solution Overview
Problem
The existing scroll compressor designs face issues with insufficient lubrication of the friction pair, leading to increased power consumption and reduced compression efficiency due to refrigerant leakage and churning of refrigeration oil, which affects the cooling capacity and durability of the compressor.
Innovation Solution
The design incorporates an oil outlet channel with an inlet connected to the oil discharging hole of the oil separation structure and an outlet connected to the oil storage tank, where the outlet is positioned above the inlet, allowing the refrigeration oil to flow against gravity, reducing outflow pressure and velocity, and ensuring stable oil storage and effective lubrication of the friction pair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the oil discharging hole is disposed to directly face towards the oil storage tank, then the refrigeration oil can be discharged directly into the storage tank, but the refrigeration oil will wash out and churn due to impact, causing refrigerant leakage and reducing lubrication effectiveness
Solution Approach 1:
The patent introduces an oil outlet channel as an intermediary structure between the oil discharging hole and the oil storage tank. This channel serves as a mediator that receives the discharged refrigeration oil and delivers it to the storage tank in a controlled manner, preventing direct impact and churning while maintaining structural simplicity.
Solution Approach 2:
The patent positions the oil outlet at a location different from the direct facing position, utilizing spatial dimensionality change. By routing the oil through a channel and positioning the outlet at an optimized location, the system achieves both simple manufacturing and effective lubrication without refrigerant leakage.
2Device complexity
If the refrigeration oil flows directly into the oil storage tank, then the oil return process is simple, but the outflow pressure and velocity are high, causing churning and refrigerant dissolution in the oil
Solution Approach 1:
The oil outlet channel acts as an intermediary that reduces the kinetic energy of the discharged refrigeration oil before it enters the storage tank. This mediator structure lowers the outflow pressure and velocity, preventing churning and refrigerant dissolution while maintaining a relatively simple overall structure.
3Length of moving object
If the oil storage tank is positioned to receive oil directly from the separation structure, then the oil delivery path is short, but the impact of discharged oil causes churning and reduces the proportion of refrigeration oil in the return oil
Solution Approach 1:
The oil outlet channel serves as an intermediary that extends the oil delivery path in a controlled manner. This channel allows the refrigeration oil to decelerate and settle before entering the storage tank, ensuring that the refrigeration oil proportion in the return oil is maintained while keeping the overall delivery path compact.
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 maintains stable refrigeration oil in the storage tank, prevents refrigerant leakage, and ensures sufficient oil return, thereby enhancing the compression efficiency and refrigeration capacity of the scroll compressor, improving the cooling performance and extending the compressor's lifespan.
Implementation Method 1
the outlet is positioned above the inlet, allowing the refrigeration oil to flow against gravity, reducing outflow pressure and velocity
Data Source
Figure 2
AI summary
Provided are a scroll compressor, a refrigeration device, and a vehicle. In the scroll compressor, an oil discharging hole (1017) of an oil separation structure(100) and an oil storage tank(12) are connected to each other by an oil outlet channel(13) disposed in a housing(10), and an oil outlet(132) of the oil outlet channel(13) is located above an oil inlet(131). The oil outlet channel (13) can guide a refrigeration oil discharged from the oil discharging hole (1017) to flow into the oil storage tank (12). After passing through the oil outlet channel (13), a flow rate and a pressure of the refrigeration oil decrease, and thus an impact of the refrigeration oil on the remaining refrigeration oil in the oil storage tank (12) is reduced when discharged from the oil outlet (132). Therefore, the refrigeration oil within the oil storage tank (12) remains stable and can always immerse an oil return hole (121) of the oil storage tank (12). Therefore, a refrigerant may be prevented from leaking into an oil return channel (20) of the compressor through the oil return hole (121), thereby ensuring sufficient oil return of the compressor, effectively lubrication of a friction pair, and improved compression efficiency.