A control method, system and multi-line system for intelligent oil return with multiple lines

Abstract

The invention discloses a multi-line intelligent oil return control method, system and multi-line system. The method includes: preset oil return conditions; when the unit is in normal operation, detect its own clock in real time to obtain the unit meeting the oil return conditions The detection results specifically include: real-time detection of the unit clock to determine the position of the unit time in the oil return condition; based on the position determined by the real-time detection, obtaining the detection result including the timing of the forced oil return action; based on the real-time detection obtained According to the detection result, run the corresponding oil return action, and resume the normal operation of the unit after the oil return operation is completed; wherein, by performing real-time detection on the oil return action of the unit, the unit will return to normal after the oil return operation is completed run. The solution of the present invention can overcome the defects of uncontrollable oil return, poor use effect and poor user experience in the prior art, and realize the beneficial effects of intelligent control of oil return, good use effect and good user experience.

Description

Technical field [0001] The present invention relates to the technical field of air conditioning control, in particular to a multi-line intelligent oil return control method, system and multi-line system. Background technique [0002] Multi-line central air conditioning (hereinafter referred to as "multi-line") or multi-line system refers to an outdoor unit connected to two or more indoor units through piping, the outdoor side adopts air-cooled heat exchange, and the indoor side adopts direct evaporation Primary refrigerant air conditioning system in the form of heat exchange. Multi-line systems are currently being increasingly used in small and medium-sized buildings and some public buildings. [0003] At present, some multi-line units need to recover refrigerating oil from the system pipelines and indoor units after running for a period of time to prevent the compressor from being damaged or burned out due to lack of oil. For example, after the unit has been running for 4 hours, ...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to, in view of the above defects, propose a multi-line intelligent oil return control method, system and multi-line system to predict the oil return operation time through the real-time monitoring of the clock, and avoid the noise caused by the oil return of the unit late at night. Affect the user's sleep, improve the use effect and user experience, so as to achieve the effects of intelligent control of oil return, good use effect and good user experience

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