220V DC Rotary Compressor
220V DC Rotary Compressors are now widely used in household appliances, refrigerators and air conditioners, and large and medium-sized rolling rotor compressors are also used in cold storage. Analyze its performance.
(1). Few parts and simple structure.
(2). Few vulnerable parts and reliable operation.
(3). Without the suction valve, the clearance volume is small and the gas transmission coefficient is high.
(4). Under the same cooling capacity, the compressor has small size, light weight and balanced operation.
(5). The machining accuracy is high.
(6). The sealing line is longer, the sealing performance is poor, and the leakage loss is greater.
(7). The leakage, friction and wear between the sliding plate and the cylinder wall are relatively large, which limits its working life and efficiency improvement.
The working cycle can be divided into three processes: suction, compression and exhaust. As the rotor rotates, each pair of meshing teeth completes the same work cycle one after another.
The groove of the spiral rotor is filled with gas when passing through the suction port. When the rotor rotates, the rotor groove is closed by the casing wall to form a compression chamber. When the rotor groove is closed, the lubricating oil is sprayed into the compression chamber to seal. Cooling and lubrication. When the rotor rotates and compresses the lubricant + gas (oil-gas mixture for short), the volume of the compression chamber decreases, and the oil-gas mixture is compressed toward the exhaust port. When the compression chamber passes through the exhaust port, the oil and gas mixture is discharged from the compressor, completing a suction-compression-discharge process.