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Patent Searching and Data


Title:
FIXED-FREQUENCY AIR CONDITIONER REFRIGERANT-DEFICIENT PROTECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/073098
Kind Code:
A1
Abstract:
The present invention relates to a fixed-frequency air conditioner refrigerant-deficient protection method, comprising the following steps: 1) operate an air conditioner in a refrigeration mode, and start a compressor; 2) measure a middle temperature Ti of an indoor heat exchanger, measure an air return temperature Th of an indoor unit, and an air conditioner controller records a cumulative operating time duration t of the compressor; 3) if Th-Ti≤T2, the time duration is longer than t4, perform step 8), and otherwise, perform step 2); 4) if t≤t5, perform step 5), and otherwise, perform step 2); 5) if (Th-Ti)max-(Th-Ti)min≥T1, perform step 6), and otherwise, perform step 2); 6) if 0

Inventors:
TAN QIUHUI (CN)
YANG YAHUA (CN)
XU LAIFU (CN)
REN KUI (CN)
Application Number:
PCT/CN2020/092072
Publication Date:
April 22, 2021
Filing Date:
May 25, 2020
Export Citation:
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Assignee:
NANJING TICA CLIMATE SOLUTIONS CO LTD (CN)
International Classes:
F24F11/38; F24F11/52; F24F11/64; F24F110/10; F24F140/20
Foreign References:
CN110645673A2020-01-03
CN105674507A2016-06-15
CN104655365A2015-05-27
JP2018155426A2018-10-04
Attorney, Agent or Firm:
NANJING TIANHUA PATENT AGENT CO., LTD. (CN)
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