Multi-split system and method and apparatus for adjusting oil volume of compressor of multi-split system
US11280527B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Nov 8, 2018 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Apr 30, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2700/03
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method and device for adjusting an oil volume of a compressor of a multi-split system. The method comprises the following steps: (S1) during an operation of a multi-split system, detecting at a first pre-set time interval whether an oil volume of a compressor is insufficient; (S2) if the oil volume of the compressor is insufficient, controlling an oil volume adjusting unit to turn on for a second pre-set time and then turn off; (S3) acquiring a total turn-on time of the oil volume adjusting unit, and determining whether the total turn-on time exceeds a pre-set value; (S4) if the total turn-on time exceeds the pre-set value and it has not been detected over a continuous third pre-set time that the oil volume of the compressor is insufficient, recycling oil back to an oil storage tank by controlling a switch unit and the oil volume adjusting unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.