Air conditioner circulation system and circulation method thereof

Abstract

The invention relates to the technical field of air conditioners, and discloses an air conditioner circulation system and a circulation method thereof. The air conditioner circulation system comprises a compressor, a heat exchanger and an oil separator, an oil storage part and an oil return part are arranged in the oil separator, a first oil return pipe is arranged to communicate with the oil storage part, and a second oil return pipe is arranged to communicate with the oil return part. An oil overflow hole is formed in the upper oil storage limit of the oil storage part, redundant oil flows into the oil return part, when the oil demand is large, an electromagnetic valve of the first oil return pipe is opened, the oil passes through the two pipelines simultaneously, when the oil demand is small, the electromagnetic valve of the first oil return pipe is closed, so that one part of oil is stored in the oil storage part, and the other part of oil flows into the oil return part; and the problems that the compressor needs a large amount of lubricating oil to maintain stable operation, but after the redundant lubricating oil enters the heat exchanger, the heat exchange effect of the heat exchanger is affected are solved.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to an air conditioning circulation system and a circulation method thereof. Background technique [0002] An important factor for the normal and reliable operation of the air-conditioning circulation system is whether the system has good lubricity, which is crucial to the lubrication of components and the operation of the system. However, for the currently used refrigerants, a large part is still organic substances, which makes the refrigerants contain Lubricating oil operation, when the lubricating oil enters the heat exchanger together with the refrigerant gas, a layer of oil film will be formed on the heat transfer wall surface, which will increase the thermal resistance, thereby reducing the heat transfer effect of the heat exchanger and reducing the cooling effect, so An oil separator device must be installed between the compressor and the heat exchanger to separate the lubricat...

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Problems solved by technology

In the current technology, in order to ensure the reliable operation of the compressor system, the most required amount of oil will be injected into the system. When the excess lubricating oil enters the heat exchanger, an oil film will be formed on the heat transfer wall surface, reducing the heat transfer effect. , so that the cooling and heating effect of the air conditioner is relatively poor, and the energy efficiency of the air conditioner is reduced

[0005] (2) When the outdoor temperature is lower than the preset value and lasts for a certain period of time, the heating mode will start. In the initial stage of starting, most of the refrigerant will migrate to the side of the outdoor unit of the air conditioner, so the gas-liquid mixture The refrigerant will enter the compressor, and the liquid substance will enter the high-speed compressor, which may cause impact or even breakdown on the compressor, affecting the reliability of the compressor

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