Title:
LOW-TEMPERATURE HEATING ACTIVATION CONTROL METHOD FOR AIR CONDITIONER, AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2020/238298
Kind Code:
A1
Abstract:
A low-temperature heating activation control method for an air conditioner, applicable to a multi-split air-conditioning system. The method comprises the following steps: acquiring an outdoor ambient temperature, then determining whether the outdoor ambient temperature is lower than a configured outdoor ambient temperature; if the outdoor ambient temperature is lower than the configured outdoor ambient temperature, acquiring real-time gas return pressure of a compressor, then adjusting, according to the real-time gas return pressure of the compressor, the degree of opening of an expansion valve corresponding to each indoor unit in an ON state and the degree of opening of an expansion valve corresponding to each indoor unit in an OFF state; determining whether a first effective timing period has been reached; and if the first effective timing period has been reached, adjusting, according to a temperature difference between the configured temperature and a real-time indoor temperature, the degree of opening of the expansion valve corresponding to each indoor unit in the ON state. An air conditioner is also disclosed. The low-temperature heating activation control method for an air conditioner, and the air conditioner disclosed in the present invention effectively resolve the issue in which an action of a low-pressure switch during a heating operation performed at ultra-low temperatures by the multi-split air-conditioning system having a long distribution pipe causes the air conditioner to fail to operate normally.
Inventors:
YANG KUN (CN)
GAO ZHIYANG (CN)
LEI YANYAO (CN)
MA YUNHUA (CN)
LI BIN (CN)
ZHANG JUNHUI (CN)
GE LONGLING (CN)
SUI YABIN (CN)
GAO ZHIYANG (CN)
LEI YANYAO (CN)
MA YUNHUA (CN)
LI BIN (CN)
ZHANG JUNHUI (CN)
GE LONGLING (CN)
SUI YABIN (CN)
Application Number:
PCT/CN2020/076581
Publication Date:
December 03, 2020
Filing Date:
February 25, 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:
F24F11/64; F25B49/02; F24F110/10; F24F110/12; F24F140/12
Foreign References:
| CN110173854A | 2019-08-27 | |||
| CN106403170A | 2017-02-15 | |||
| CN106403170A | 2017-02-15 | |||
| CN1940409A | 2007-04-04 | |||
| CN106482405A | 2017-03-08 | |||
| JP2004324981A | 2004-11-18 |
Other References:
See also references of EP 3978821A4
Attorney, Agent or Firm:
QINGDAO LZ PATENT AND TRADEMARK OFFICE CO., LTD. (CN)
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