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Title:
ANTI-FREEZING CONTROL METHOD FOR INDOOR UNIT OF AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2019/158047
Kind Code:
A1
Abstract:
The present invention relates to the technical field of air conditioners, and specifically relates to an anti-freezing control method for an indoor unit of an air conditioner. The present invention aims to solve a problem in the prior art in which an air conditioner only uses the temperature of an inner coil to determine whether freezing has occurred in an indoor unit, and thus the determination is likely to be affected by other factors and be inaccurate. The anti-freezing control method for an indoor unit of the present invention comprises: when an air conditioner is performing a cooling operation, acquiring a current value of a fan and a temperature of a coil in an indoor unit; and if the temperature of the coil in the indoor unit is lower than a coil freeze temperature, determining, according to the current value of the fan, whether to cause the air conditioner to enter an indoor unit anti-freezing mode. When a temperature of a coil in an indoor unit is lower than a coil freeze temperature, it is likely that a freeze has occurred in the indoor unit, and thus an air conditioner needs to take into consideration a current value of a fan in the indoor unit to perform further determination with respect to occurrence of a freeze in the indoor unit, thereby maximally ensuring that the indoor unit can quickly and accurately enter a anti-freezing mode.

Inventors:
XU, Wenming (Haier Industrial Park, NO.1 Haier Road Laoshan Distric, Qingdao Shandong 1, 266101, CN)
WANG, Fei (Haier Industrial Park, NO.1 Haier Road Laoshan Distric, Qingdao Shandong 1, 266101, CN)
FU, Yu (Haier Industrial Park, NO.1 Haier Road Laoshan Distric, Qingdao Shandong 1, 266101, CN)
Application Number:
CN2019/074846
Publication Date:
August 22, 2019
Filing Date:
February 12, 2019
Export Citation:
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Assignee:
QINGDAO HAIER AIR CONDITIONER GENERAL CORP., LTD. (Haier Industrial Park, NO.1 Haier Road Laoshan Distric, Qingdao Shandong 1, 266101, CN)
International Classes:
F24F11/43; F24F11/64; F24F11/65; F25B47/02
Attorney, Agent or Firm:
WISEAST INTELLECTUAL PROPERTY LAW FIRM (Room 609, Building 1Yard 1, Shangdi 10th Street, Haidian District, Beijing 5, 100085, CN)
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