Influence of Air Intrusion in R32 Compressor on Combustible Risk
During the operation of the air conditioner, when the outlet of the air conditioner condenser is blocked, if there is a leak point in the front section of the compressor and the air is taken in, the mixture of R32 refrigerant and air will burn or explode when the temperature and pressure reach certa...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Journal of Refrigeration Magazines Agency Co., Ltd.
2020-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2020.04.001 |
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| Summary: | During the operation of the air conditioner, when the outlet of the air conditioner condenser is blocked, if there is a leak point in the front section of the compressor and the air is taken in, the mixture of R32 refrigerant and air will burn or explode when the temperature and pressure reach certain conditions. In this paper, in the view of the safe operation of the R32 compressor, when the air conditioner is running, close the condenser outlet. The combination of experimental and simulation studies is used to investigate the risk of flammability in the R32 compressor when the air intrusion is 10%, 40%, or 60% of the compressor intake. The analysis results show that the air intrusion amount is 10% of the compressor suction, the impact on the compressor discharge pressure and exhaust temperature is small, and the flammability risk is low; When the amount of air intrusion is greater than 10% of the intake of the compressor, as the amount of air intrusion increases, the discharge pressure increases and when the air intrusion amount is 60%, the exhaust pressure exceeds 17% of the rated outlet pressure of the compressor. At this time, the temperature of the lubricating oil in the oil pool exceeds 100 ℃, generating The carbon deposit increases the risk of combustion and explosion; the coil winding temperature of the motor exceeds the temperature limit of the insulating material by 120 ℃, accelerating the aging of the insulating material to cause a short circuit to generate sparks, and increasing the flammability risk in the R32 compressor. |
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| ISSN: | 0253-4339 |