Title:
METHOD FOR CONTROLLING MULTI-SPLIT AIR-CONDITIONING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/143744
Kind Code:
A1
Abstract:
Disclosed is a method for controlling a multi-split air-conditioning system. The system comprises an outdoor unit, a plurality of connecting pipes (1) and a plurality of indoor units (2), wherein each connecting pipe (1) is provided with a throttling element (4), a switch valve (5) and a first electronic expansion valve (3), and the throttling element (4) and the switch valve (5) are arranged in parallel; and the throttling element (4) and the switch valve (5) are arranged on a downstream side of the first electronic expansion valve (3) in a refrigerant flowing direction of the indoor unit (2) during refrigeration. The control method comprises: determining an operating state of the indoor unit (2); and according to the operating state of the indoor unit (2), selectively opening or closing the switch valve (5) to make the first electronic expansion valve (3) independently throttle a refrigerant, or to make the throttling element (4) and the first electronic expansion valve (3) sequentially throttle the refrigerant according to different sequences. By means of the control method, the refrigerating capacity and the heating capacity of the indoor unit (2) can be taken into consideration, and the noise caused by the refrigerant is reduced, such that the user experience is improved.
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Inventors:
CUI GUODONG (CN)
CHU YUNTONG (CN)
WANG HAISHENG (CN)
CHU YUNTONG (CN)
WANG HAISHENG (CN)
Application Number:
PCT/CN2021/071636
Publication Date:
July 22, 2021
Filing Date:
January 14, 2021
Export Citation:
Assignee:
QINGDAO HAIER AIR CONDITIONING ELECTRONIC CO LTD (CN)
HAIER SMART HOME CO LTD (CN)
HAIER SMART HOME CO LTD (CN)
International Classes:
F25B41/00
Foreign References:
| CN111237856A | 2020-06-05 | |||
| CN1367363A | 2002-09-04 | |||
| CN106288549A | 2017-01-04 | |||
| CN104456739A | 2015-03-25 | |||
| CN202973381U | 2013-06-05 | |||
| CN209310268U | 2019-08-27 | |||
| KR20070071213A | 2007-07-04 |
Attorney, Agent or Firm:
HANRAY LAW FIRM (CN)
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