Hitachi water source heat pump compressor How does the air conditioning compressor work? The air-conditioning compressor is also called a rotary (rotor) compressor, and its working principle is to rely on an eccentric rotor under the action of spring force, the compressor, and the eccentric rotor are always in contact with the container separated by the sliding container Changes to achieve a process of compression. When the eccentric rotor rotates, the volume of the container changes and the gas is compressed. compressor
The rotary compressor has no suction valve, Hitachi heat pump compressor, the suction pipe is directly through the compression chamber, and there are a series of characteristics such as vertical exhaust upward, so the compressor has low airflow resistance, less mechanical loss, The advantages such as low suction overheating make the compressor reliable in operation, high in coefficient of performance, and widely used in air conditioners. What are the characteristics of scroll refrigeration compressors?
The characteristics of scroll refrigeration compressors are as follows, and their characteristics are also the goals that air-conditioning compressor manufacturing technology is constantly pursuing. ① The pressure difference between the two adjacent chambers is small, and the gas leakage is small. ② The torque change range is small and the vibration is small. ③ There is no clearance volume, so there is no expansion process that causes the gas transmission coefficient to decrease. ④ No suction and exhaust valve, high efficiency, high reliability and low noise. compressor ⑤ As the gas support mechanism is adopted, it is allowed to be compressed with liquid. ⑥ The inner cavity of the casing is an exhaust chamber, which reduces the suction preheating and improves the compressor's air transmission coefficient. ⑦. The machining accuracy of the vortex body profile is very high. Hitachi heat pump compressors must use special precision processing equipment. ⑧ High sealing requirements and complicated sealing mechanism The compressor is an indispensable part of the refrigeration system, and now it has been widely used in air conditioners because of its reliable operation and high coefficient of performance. How does the electronic expansion valve control the compressor to reduce energy loss during start and stop?
How does the electronic expansion valve reduce the energy loss of the compressor during start and stop? When the compressor is stopped, the electronic expansion valve can completely close the valve to prevent the refrigerant from flowing from the condenser to the evaporator; when the compressor starts, first control the opening of the electronic expansion valve, Hitachi water source heat pump The compressor makes the suction and discharge pressures quickly reach equilibrium, and then controls the start of the compressor, which not only reduces heat loss, but also makes the compressor easy to start. This is the effect of combining the wide range of flow adjustment characteristics of the electronic expansion valve with the frequency conversion characteristics of the inverter compressor.
