Title:
MULTI-SPLIT SYSTEM AND METHOD AND DEVICE FOR ADJUSTING OIL VOLUME OF COMPRESSOR OF MULTI-SPLIT SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/091431
Kind Code:
A1
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 preset 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 preset 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 preset value; (S4) if the total turn-on time exceeds the preset value and it has not been detected over a continuous third preset 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.
Inventors:
WANG MINGREN (CN)
YANG KUN (CN)
YANG KUN (CN)
Application Number:
PCT/CN2018/114617
Publication Date:
May 16, 2019
Filing Date:
November 08, 2018
Export Citation:
Assignee:
GD MIDEA HEATING & VENTILATING EQUIPMENT CO LTD (CN)
MIDEA GROUP CO LTD (CN)
MIDEA GROUP CO LTD (CN)
International Classes:
F24F11/00; F25B31/00; F25B41/20; F25B41/31
Foreign References:
| CN102305439A | 2012-01-04 | |||
| CN103486785A | 2014-01-01 | |||
| CN103925740A | 2014-07-16 | |||
| CN203454497U | 2014-02-26 | |||
| CN1786606A | 2006-06-14 | |||
| JP4110818B2 | 2008-07-02 | |||
| US20140331712A1 | 2014-11-13 | |||
| JP2008139001A | 2008-06-19 | |||
| CN107975978A | 2018-05-01 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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