Rotary Compressor Gas Supplement Port Layout for Stable Capacity
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Solution Overview
Problem
Existing rotary compressors experience a decline in capacity and energy efficiency at low external ambient temperatures due to high operating pressure ratios, necessitating improved gas supplement methods to enhance performance.
Innovation Solution
A rotary compressor design with a controlled angle (11° ≤ θ ≤ 100°) between the gas supplement port and exhaust port, utilizing a gas supplement pipeline connected to the compression chamber, maintains consistent gas supplement under varying conditions, enhancing operating capacity and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the operating pressure ratio is increased to improve compression performance, then the compression capacity is improved, but the energy efficiency significantly declines
Solution Approach 1:
The gas supplement port introduces additional gas into the compression chamber before the compression stroke completes, pre-charging the chamber with gas that will be compressed in the upcoming stroke. This preliminary action ensures that the compression chamber is optimally filled regardless of the pressure ratio conditions, maintaining both capacity and efficiency across varying operating conditions.
Solution Approach 2:
The invention changes the physical parameters of the compression process by introducing supplemental gas at a controlled angle and position. By adjusting the gas supplement angle (θ) and the timing of gas introduction, the system optimizes the mass of gas compressed per stroke, thereby improving energy efficiency while maintaining compression capacity across different pressure ratios.
2Productivity
If the gas supplement angle is optimized to improve compressor capacity, then the capacity is enhanced, but the adaptability to different working conditions deteriorates
Solution Approach 1:
The gas supplement port is designed with an adjustable angle mechanism that allows the gas introduction angle to be dynamically changed based on operating conditions. The angle θ can be adjusted within the range of 10° to 100° relative to the compression chamber axis, enabling the system to adapt to varying pressure ratios and ambient temperatures while maintaining optimal capacity across all conditions.
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 design maintains gas supplement amount unchanged, improves compressor capacity, and balances energy efficiency across different working conditions.
Implementation Method 1
a crankshaft, which is configured to transmit a rotational force of the motor to a piston to rotate the piston in the at least one cylinder to compress refrigerant
Implementation Method 2
a gas supplement pipeline connected to a compression chamber, wherein in a cross-section perpendicular to a rotating axis of the motor, a first connection line is formed by a first projection point of a center point of the exhaust port on the cross-section and a second projection point of the rotating axis of the motor on the cross-section; a second connection line is formed by a third projection point of a center point of a gas supplement port of the gas supplement pipeline on the cross-section and the second projection point; a value range of an included angle θ between the first connection line and the second connection line is: 11° ≤ θ ≤ 100°
Data Source
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AI summary
The present disclosure provides a rotary compressor including: a shell; a motor, at least one cylinder, and a crankshaft, which are accommodated in the shell, wherein each cylinder is provided with an exhaust port, a vane groove and a vane, the crankshaft is configured to transmit a rotational force of the motor to a piston to rotate the piston in the at least one cylinder to compress refrigerant; a gas supplement pipeline connected to a compression chamber, wherein in a cross-section perpendicular to a rotating axis of the motor, a first connection line is formed by a first projection point of a center point of the exhaust port on the cross-section and a second projection point of the rotating axis of the motor on the cross-section; a second connection line is formed by a third projection point of a center point of a gas supplement port of the gas supplement pipeline on the cross-section and the second projection point; a value range of an included angle 0 between the first connection line and the second connection line is: 11° ≤ 0 ≤100° . The rotary compressor of the present disclosure can maintain the gas supplement amount basically unchanged under different working conditions, improve the operating capacity of the compressor, and balance the energy efficiency of the compressor and the adaptability to different working conditions.