Title:
WATER CHILLING UNIT AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/120453
Kind Code:
A1
Abstract:
The present invention relates to the technical field of air conditioners, in particular to a water chilling unit. The problem that due to the fact that the liquid level of a refrigerant in a gas-liquid separator (280) in an existing water chilling unit is too high, damage or reduction in the refrigeration performance of the water chilling unit are resulted from liquid entrainment into a compressor (110) is solved. To this end, a first exhaust port of a condenser (210) and a liquid discharge port of the gas-liquid separator (280) are connected to an intake port of the compressor (110) by means of an ejector (802). When the liquid level of the refrigerant in the gas-liquid separator (280) exceeds a set position, the compressor (110) can suck the high-temperature and high-pressure gaseous refrigerant in the condenser (210) to the intake port of the compressor (110) by means of the ejector (802) at a high flow speed, and meanwhile negative pressure is formed at the second end, connected with the gas-liquid separator (280), of the ejector (802), and the liquid refrigerant in the gas-liquid separator (280) is sucked into the ejector (802) at a small flow rate to be converged and vaporized with the high-temperature and high-pressure gaseous refrigerant flowing out from the condenser (210) and then returns to the intake port of the compressor (110) together such that the liquid level of the refrigerant in the gas-liquid separator (280) can be lowered and no refrigerant waste is guaranteed.
Inventors:
WANG SHUSEN (CN)
ZHANG JIE (CN)
WANG TIEWEI (CN)
DENG SHANYING (CN)
ZHANG JIE (CN)
WANG TIEWEI (CN)
DENG SHANYING (CN)
Application Number:
PCT/CN2020/083749
Publication Date:
June 24, 2021
Filing Date:
April 08, 2020
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:
F25B9/08
Domestic Patent References:
| WO2008002048A1 | 2008-01-03 |
Foreign References:
| CN102230681A | 2011-11-02 | |||
| CN201344672Y | 2009-11-11 | |||
| CN203132193U | 2013-08-14 | |||
| JP2004108615A | 2004-04-08 | |||
| US20070028630A1 | 2007-02-08 | |||
| EP3575710A1 | 2019-12-04 |
Attorney, Agent or Firm:
HANRAY LAW FIRM (CN)
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