For the elimination of the vibration caused by the pulsation of the two cylinders, it can be solved by adding an inlet and outlet buffer tank. The size of the inlet and outlet buffer tanks and the arrangement of the pulsation of the piston compressor cause great harm to the compressor unit. Therefore, the pressure pulsation should be limited to a certain range (pressure unevenness is preferable). The most effective way to reduce airflow pressure pulsation is to install a buffer vessel at the inlet and outlet of the compressor.

For the miniature fully enclosed single-stage two-stage compressor, the high-pressure stage intake buffer is replaced by a compressor container, and the outlet damper can be drilled in the body. The low-pressure outlet damper can also be drilled in the body (ie, the original buffer of the single-stage compressor), and the intake damper can be provided with a container on the outside of the compressor body and the low-pressure stage intake line (from the compressor) The closer the better, the function of buffering, filtering oil, etc., the area of ​​the connecting pipe between the buffer and the intake chamber should be larger than the area of ​​the cylinder connecting tube to ensure the smooth flow of the gas, take a larger bending radius at the turning point, and avoid the The segment produces a gas column resonance. The ratio of the damper volume to the compressor cylinder volume is approximately between. After dissecting the mini-closed compressor for the refrigerator, without changing the outer casing of the compressor, after the casting body has been modified, there is room for processing a high-pressure cylinder and a set of high-pressure outlet dampers (due to high pressure). The size of the cylinder is small, and the buffer volume is also small.

Advantages of Miniature Fully Enclosed Single-Phase Two-Stage Compressor In order to reduce the leakage caused by the gap between the piston and the cylinder, the pressure in the compressor casing should be the high-pressure inlet pressure so that the pressure difference across the two-stage piston is minimized. A buffer tank is provided at each of the high and low pressure inlet and outlet to reduce the vibration caused by the airflow pulse. The miniature single-machine two-stage hermetic compressor adopts the movable or angled structure to balance all or part of the inertial force, so that the vibration caused by the inertial force and the noise caused by it will not increase, but will have some reduce.

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