Title:
AIR CONDITIONING SYSTEM AND PRESSURE RATIO CONTROL METHOD AND DEVICE THEREOF
Document Type and Number:
WIPO Patent Application WO/2019/071654
Kind Code:
A1
Abstract:
A pressure ratio control method of an air conditioning system comprises the following steps: (S1) during operation of an air conditioning system, regularly obtaining an actual pressure ratio of a compressor; (S2) determining whether the actual pressure ratio is greater than or equal to a first pressure ratio corresponding to a current level; (S3) if so, controlling the compressor to operate at a lower level; (S4) if not, further determining whether the actual pressure ratio is less than a second pressure ratio corresponding to the current level; and (S5) if so, controlling the compressor to operate at a higher level. The control method adjusts a maximum limit output of a compressor step by step, and controls the pressure ratio to be less that a target limit value to prevent the compressor from operating beyond a safe operating range for a long time, thereby ensuring reliability of the compressor. The invention further discloses an air conditioning system and a control device.
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Inventors:
MA XIHUA (CN)
XU YONGFENG (CN)
XIONG MEIBING (CN)
REN LINXING (CN)
XU YONGFENG (CN)
XIONG MEIBING (CN)
REN LINXING (CN)
Application Number:
PCT/CN2017/107493
Publication Date:
April 18, 2019
Filing Date:
October 24, 2017
Export Citation:
Assignee:
GD MIDEA HEATING & VENTILATING EQUIPMENT CO LTD (CN)
MIDEA GROUP CO LTD (CN)
MIDEA GROUP CO LTD (CN)
International Classes:
F24F11/64; F24F11/00
Foreign References:
| CN103807979A | 2014-05-21 | |||
| CN106642806A | 2017-05-10 | |||
| CN105605752A | 2016-05-25 | |||
| CN106440591A | 2017-02-22 | |||
| CN101086361A | 2007-12-12 | |||
| US20140230466A1 | 2014-08-21 | |||
| KR101591327B1 | 2016-02-03 | |||
| JP2015031411A | 2015-02-16 | |||
| US5150581A | 1992-09-29 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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