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Title:
MULTI-SPLIT AIR CONDITIONING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/036781
Kind Code:
A1
Abstract:
A multi-split air conditioning system, comprising a first heat exchanging coiled pipe (101), a second heat exchanging coiled pipe (201), and multiple indoor units (3). Refrigerants having different temperatures flow in the first heat exchanging coiled pipe (101) and the second heat exchanging coiled pipe (201); each indoor unit (3) comprises a heat exchanger and an air supply fan (4); the heat exchanger is connected to the first heat exchanging coiled pipe (101) by means of a first refrigerant input pipe (5) and a first refrigerant output pipe (6), so that the refrigerant in the first heat exchanging coiled pipe (101) can flow into the heat exchanger by means of the first refrigerant input pipe (5), and the refrigerant in the heat exchanger can flow into the first heat exchanging coiled pipe (101) by means of the first refrigerant output pipe (6). The first refrigerant input pipe (5) is provided with a first valve element (7), and the first valve element (7) is configured to adjust refrigerant flow of the first refrigerant input pipe (5). The heat exchanger is further connected to the second heat exchanging coiled pipe (201) by means of a second refrigerant input pipe (8) and a second refrigerant output pipe (9), so that the refrigerant in the second heat exchanging coiled pipe (201) can flow into the heat exchanger by means of the second refrigerant input pipe (8), and the refrigerant in the heat exchanger can flow into the second heat exchanging coiled pipe (201) by means of the second refrigerant output pipe (9). The second refrigerant input pipe (8) is provided with a second valve element (10), and the second valve element (10) is configured to adjust refrigerant flow of the second refrigerant input pipe (8). When the refrigerant temperature in the first heat exchanging coiled pipe (101) and the second heat exchanging coiled pipe (201) is different, the refrigerant flow flowing out of the first heat exchanging coiled pipe (101) and the refrigerant flow flowing out of the second heat exchanging coiled pipe (201) are respectively controlled by means of the first valve element (7) and the second valve element (10), and a ratio of the refrigerant flow having two different temperatures which simultaneously flows through the heat exchanger can be regulated, so that each heat exchanger has desired heat/cold transfer capacity in the case that the ratio of the refrigerant flow is set according to heat exchanging requirements of the heat exchangers, and thus each indoor unit (3) can set, according to respective heat exchanging requirements, the ratio of the refrigerants together flowing through the heat exchangers of the indoor units (3), thereby implementing independent heating or refrigerating of the indoor units (3).

Inventors:
SUN JIGUO (CN)
CHENG SHAOJIANG (CN)
ZHUO BAITIAN (CN)
ZHANG RUIGANG (CN)
WANG JUN (CN)
Application Number:
PCT/CN2020/108425
Publication Date:
March 04, 2021
Filing Date:
August 11, 2020
Export Citation:
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Assignee:
QINGDAO HAIER AIR CONDITIONING ELECTRONIC CO LTD (CN)
HAIER SMART HOME CO LTD (CN)
International Classes:
F24F1/00; F25B13/00; F25B47/02
Foreign References:
JP2019138486A2019-08-22
JP2017026289A2017-02-02
CN107228439A2017-10-03
JP2010071544A2010-04-02
CN101329093A2008-12-24
CN104748261A2015-07-01
Attorney, Agent or Firm:
HANRAY LAW FIRM (CN)
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