Compressor-Hitachi Inverter Compressor The role of the compressor in the air conditioning system From the current development trend of refrigeration compressors, in order to make it compact, efficient, energy-saving and low vibration and low noise, it has become the goal that air-conditioning compressors continue to pursue in manufacturing technology. Its role is mainly manifested in the following points: compressor
(1) The compressor absorbs steam from the evaporator to ensure a certain evaporation pressure in the evaporator; ⑵ Compressor increases pressure (compression), used to create conditions for condensation at higher temperatures; (3)The compressor can deliver refrigerant, and then the refrigerant can complete the refrigeration cycle. (4)What is the reason for the air-conditioning compressor to become explosive bombs? (5) (6) The well-developed network communication makes it easier for us to know the latest news. In the refrigeration industry, which is an indispensable role in national production and life, Hitachi inverter compressors also often happen that some things we do not want to see appear on the headlines, such as the explosion of air-conditioning compressors. We hope to find out some causes of the explosion of the air-conditioning compressor, let the operating masters understand in detail, and avoid the recurrence of such accidents. (7) (8) Generally, the probability of a new factory-made air conditioner compressor exploding is almost negligible. Many explosion accidents are in the maintenance process. Because the air conditioner is used for a long time, many protections will fail. For example, if the high-pressure protection fails, if the air-conditioning compressor does not stop running and has been working, it is presumed that the friends can imagine that it will cause the high pressure to rise all the time, and the copper pipe will burst easily. The conditions that the air-conditioning compressor needs to be exploded are: 1. There is air (oxygen); 2. There are combustibles; 3. Closed narrow space.
Correspondingly, it is easy for us to get the mechanism of compressor explosion: 1. There is air (oxygen)-the system is leaking and mixed with air; 2. There are combustibles-there is freezing oil in the air-conditioning compressor; 3. Closed narrow space-the volume of the scroll of the scroll compressor is very small. Then the process of explosion of the air conditioner compressor is: the high pressure side of the air conditioner refrigeration cycle system is blocked >> the air conditioner compressor runs >> inhales the air for a few minutes >> the compressor is overheated >> the refrigerating machine oil is overheated and vaporized >> a large amount of oil and gas mixture inside the compressor Increase>>Temperature and pressure continue to increase>>At a certain pressure and temperature, the oil and gas mixture in the compressor spontaneously ignites, and the temperature and pressure rise sharply>>Exceed the compression strength of the compressor housing and the compressor housing bursts.
This is the principle of the explosion of the air-conditioning compressor. Because of space, it will not be repeated here.
Two scrolls of compressor and their functions The compressors commonly used in refrigeration systems have two scrolls, one is a moving scroll and the other is a static scroll. The center of the moving scroll in the compressor makes a circular motion around the center of the fixed scroll in the compressor under the drive of the main shaft. This movement will cause compression between the two scrolls, and then the low-pressure gas enters the suction chamber. The movement of the moving scroll in the compressor, the Hitachi compressor stepless frequency conversion, compression is a continuous process, so in the second circular motion part of the gas is compressed, the other part of the gas enters the scroll, and part of the gas will Be discharged. Therefore, the compression of the scroll compressor is completed by the two scrolls located in the upper part of the compressor, and the scroll is located above the motor.
