Low back pressure rotary compressor and corresponding oil return pressure drop control method, and air conditioner

Abstract

The invention provides a low back pressure rotary compressor, a corresponding oil return pressure drop control method, and an air conditioner. Among them, the low back pressure rotary compressor includes a shell, a pump body assembly in the shell, an oil separator, and the oil separator communicates with the exhaust port of the pump body assembly, and also includes an oil return lubricating pipeline. The oil lubricating pipeline is located between the oil collecting part of the oil separator and at least one end surface of the roller of the pump body assembly, so that the lubricating oil in the oil collecting part lubricates at least one end surface of the roller. The invention provides a low back pressure rotary compressor, a corresponding oil return pressure drop control method, and an air conditioner. The lubricating oil in the oil-liquid separator is introduced into the end face of the roller in the pump body assembly of the compressor, effectively overcoming the In the low back pressure rotary compressor, the end faces of the rollers cannot be effectively lubricated, thereby ensuring the sealing of the pump body components, reducing the leakage of refrigerant of the pump body components and the wear of the end faces of the rollers.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a low back pressure rotary compressor, a corresponding oil return pressure drop control method, and an air conditioner. Background technique [0002] In recent years, rotary compressors have been widely used, especially in air conditioners, water heaters, refrigeration equipment and other fields. Compared with the high pressure (high back pressure) structure in the shell, there is also a low back pressure rotary compressor with a low pressure structure in the shell. The low back pressure rotary compressor reduces the pressure requirements of the shell, which can significantly reduce the weight and cost of the compressor, and can greatly reduce the amount of refrigerant charged, reducing the amount of refrigerant packaged in the system, which not only improves the safety of the equipment Sex, and reduce the manufacturing cost of the equipment. [0003] For t...

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Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to provide a low back pressure rotary compressor, a corresponding oil return pressure drop control method, an air conditioner, and a method of introducing the lubricating oil in the oil-liquid separator into the pump body assembly of the compressor. The end face of the roller effectively overcomes the problem that the end face of the roller in the low back pressure rotary compressor cannot be lubricated effectively, thereby ensuring the sealing of the pump body components, reducing the leakage of refrigerant of the pump body components and the wear of the end face of the rollers

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