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

Abstract

The invention discloses an oil return control method and device of a multi-split air conditioning system, the multi-split air conditioning system, a storage medium and a processor. The method comprises the steps that under the condition that the multi-split air conditioning system operates, the oil return grades of N indoor units in the multi-split air conditioning system are determined; according to the oil return grades of the N indoor units in the multi-split system, the oil return mode of the multi-split system is determined; under the condition that the multi-split system needs oil return, the multi-split system is controlled to return oil according to the oil return mode of the multi-split system; and after oil return of the multi-split system is finished, the multi-split system is controlled to continue to operate. According to the scheme, in the oil return process of the multi-split system, priority control is carried out on oil return control participated by the indoor unit, indoor temperature fluctuation and indoor unit noise increase can be reduced or even avoided, and the user experience can be improved.

Description

technical field [0001] The invention belongs to the technical field of air-conditioning systems, and in particular relates to an oil return control method and device for a multi-connection system, a multi-connection system, a storage medium and a processor, and in particular to a priority for multi-connection indoor units participating in oil return in a multi-connection system. Level control method, device, multi-connection system, storage medium and processor. Background technique [0002] With the improvement of people's living standards, the comfort requirements for air-conditioning systems (such as multi-split systems) are becoming more and more stringent. In related solutions, in the multi-connected system, in order to ensure reliability, the multi-connected system performs oil return at regular intervals, so as to take the refrigerant out of the multi-connected system and recover the oil adsorbed on the pipeline to ensure that the compressor does not It will run out ...

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Problems solved by technology

[0004] The object of the present invention is to provide an oil return control method, device, multi-line system, storage medium and processor of a multi-line system, so as to solve the problem that the multi-line system performs oil return at intervals. The indoor unit needs to carry out corresponding oil return control, so that the state and flow of the refrigerant in the indoor unit change, causing indoor temperature fluctuations and indoor unit noise increase, which affects the user experience. , the priority control of the indoor unit participating in the oil return control can reduce or even avoid the indoor temperature fluctuation and the increase of the indoor unit noise, which is conducive to improving the effect of user experience

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