Multi-line system and oil return control method, device, storage medium and processor thereof

Abstract

The invention discloses an oil return control method and device for a multi-connection system, a multi-connection system, a storage medium and a processor. The method includes: when the multi-connection system is running, obtaining The cumulative running time of each running internal machine; according to the cumulative running time of each running internal machine in the multi-line system, determine whether more than one running internal machine in the multi-line system has reached the set oil return condition; When more than one running internal machine in the multi-line system meets the oil return condition, it is determined that all internal machines in the multi-line system need to return oil; according to the determined internal machine that needs to return oil, Control the internal machine that needs to return oil to return oil. In this solution, oil is returned to the internal unit that has reached the oil return condition, so as to reduce the output capacity demand of the compressor and save the energy consumption of oil return.

Description

technical field [0001] The invention belongs to the field of multi-line technology, and in particular relates to a multi-line system oil return control method, device, multi-line system, storage medium and processor, and in particular to a multi-line high-efficiency oil return control method, device, and multi-line system , storage media and processors. Background technique [0002] A multi-connected central air conditioner refers to an air conditioning system in which one outdoor unit is connected to two or more indoor units through piping, that is, a multi-connected system. Multi-connection systems are increasingly widely used in small and medium-sized buildings and some public buildings. [0003] In related schemes, after some multi-connected system units have been running for a period of time, the refrigeration oil needs to be recovered from the pipelines and indoor units of the multi-connected system to prevent the compressor from being damaged or burned due to lack of...

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Problems solved by technology

[0005] The object of the present invention is to provide an oil return control method, device, multi-line system, storage medium and processor for a multi-line system, so as to solve the problem of returning oil to all internal units indiscriminately when the multi-line system returns oil, so that The demand for output capacity of the compressor is large, which causes the problem of energy waste. By returning oil to the internal unit that meets the oil return conditions, the output capacity demand of the compressor is reduced and the energy consumption of oil return is saved.

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