Multi-split system and method and apparatus for adjusting oil volume of compressor of multi-split system
US11473801B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Nov 8, 2018 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Jan 23, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B31/004
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A multi-split system and a method and device for adjusting an oil volume of a compressor of a multi-split system. The adjusting method comprises the following steps: recycling oil back to an oil storage tank by controlling a switch unit to turn on and an oil volume adjusting unit to turn off; when a continuous time over which the oil storage tank recycles oil reaches a first pre-set time (t1), controlling the switch unit to turn off and controlling a multi-split system to perform a test run; obtaining, according to a low-pressure piping pressure loss (P1) and a refrigerant flow (Q), a low-pressure piping pipe diameter (D) and a low-pressure refrigerant density (Den), an excess oil volume (Q2) that needs to be recycled, and obtaining, according to the excess oil volume and a maximum oil storage volume (Qz) of the oil storage tank, an oil volume to be expelled (Q3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.