Compressor Bypass Valve for Rapid Restart and Pressure Balancing
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Solution Overview
Problem
In refrigeration devices, compressors face challenges in rapid restart due to pressure differences and inefficiencies in heat management after shutdown, leading to wasted energy and reduced operational reliability.
Innovation Solution
A compressor design incorporating a bypass valve with multiple ports and an electromagnetic control system that allows for quick pressure balancing and residual heat utilization by switching states based on pressure conditions, enabling efficient energy use and rapid restart.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the compressor is stopped and then restarted, then the pressure difference between suction side and exhaust side must reach a certain range, but this causes delayed restart and reduced operational reliability
Solution Approach 1:
A bypass valve is introduced as an intermediary component to balance pressure between the high-pressure and low-pressure sides of the compressor. The bypass valve includes a valve body with multiple ports and a valve core that can selectively communicate these ports, allowing controlled pressure equalization without requiring a large pressure difference for restart
Solution Approach 2:
The bypass valve performs preliminary pressure balancing action before the compressor restarts. By equalizing pressure in advance through the bypass passage, the system eliminates the need to wait for pressure difference to build up, enabling immediate restart capability
2Loss of energy
If the compressor is stopped, then refrigerant rapidly returns from high-pressure side to low-pressure side through clearances, but this causes heat waste and reduced energy efficiency
Solution Approach 1:
The bypass valve converts the harmful rapid refrigerant return flow into a beneficial controlled process. Instead of allowing uncontrolled refrigerant migration through clearances that wastes heat, the bypass valve provides a controlled passage for pressure balancing that preserves residual heat in the high-pressure side heat exchanger for later utilization
Solution Approach 2:
The bypass valve maintains continuous pressure balance between high-pressure and low-pressure sides, preventing the discontinuous rapid refrigerant return that occurs through clearances. This continuous controlled action preserves thermal energy and allows the high-pressure side heat exchanger to continue serving as a heat source after compressor shutdown
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 solution enables rapid compressor restart and efficient energy utilization by balancing pressures and utilizing residual heat, improving the compressor's energy efficiency and operational reliability.
Implementation Method 1
a bypass valve further includes an electromagnetic control portion electromagnetically connected to the valve core
Data Source
AI summary
A compressor and a refrigeration device are disclosed. The compressor has a sealing container, a motor portion and a compressing mechanism portion, and a bypass valve. The motor portion and the compressing mechanism portion are both provided in the sealing container. The compressor has an exhaust side and a suction side spaced apart from each other. The exhaust side is connected to the bypass valve. The exhaust side is suitable for exhausting air to external parts through the bypass valve, or suitable for communicating with the suction side through the bypass valve.