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Title:
METHOD AND SYSTEM FOR DETECTING DIRT BLOCKAGE OF AIR CONDITIONER BASED ON SINGLE PRESSURE SENSOR, AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2018/040616
Kind Code:
A1
Abstract:
Disclosed are a method and system for detecting dirt blockage of an air conditioner based on a single pressure sensor, and an air conditioner, the method comprising the following steps: acquiring the value of pressure on a leeward side of a dust filter screen at a first fan speed or the value of pressure on a leeward side of a heat exchanger at the first fan speed; acquiring the value of pressure on a windward side of the dust filter screen according to the first fan speed; calculating a first pressure difference between the two sides of the dust filter screen or a second pressure difference between two sides of an indoor unit; and acquiring the level of dirt blockage of the dust filter screen according to the first pressure difference and the first fan speed, or acquiring the level of dirt blockage of the indoor unit according to the second pressure difference and the first fan speed. Since the method directly acquires the value of pressure on the windward side of the dust filter screen by means of the first fan speed, the level of dirt blockage of the dust filter screen or the indoor unit can be obtained by means of only one pressure sensor being required to collect the value of pressure on the leeward side of the dust filter screen or the value of pressure on the leeward side of the heat exchanger. Not only is the detection result accurate and the detection method simple, but the cost is also low since one pressure sensor is spared.

Inventors:
YUAN, Guang (Refrigeration Main Building, East Area Midea Industry Town, Beijiao, Shund, Foshan Guangdong 1, 528311, CN)
LI, Hongtao (Refrigeration Main Building, East Area Midea Industry Town, Beijiao, Shund, Foshan Guangdong 1, 528311, CN)
Application Number:
CN2017/084605
Publication Date:
March 08, 2018
Filing Date:
May 16, 2017
Export Citation:
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Assignee:
GD MIDEA AIR-CONDITIONING EQUIPMENT CO., LTD. (Refrigeration Main Building, East Area Midea Industry Town, Beijiao, Shund, Foshan Guangdong 1, 528311, CN)
MIDEA GROUP CO., LTD. (B26-28F, Midea Headquarter Building No. 6 Midea Avenue, Beijiao, Shund, Foshan Guangdong 1, 528311, CN)
International Classes:
F24F11/00; B01D46/46
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (Room 301 Trade Building, Zhaolanyuan Tsinghua University, Qinghuayuan, Haidian District, Beijing 4, 100084, CN)
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