Title:
CONTROL METHOD AND APPARATUS FOR COMPRESSION SYSTEM, AND AIR ENERGY HEAT PUMP WATER HEATER
Document Type and Number:
WIPO Patent Application WO/2023/273291
Kind Code:
A1
Abstract:
The present disclosure relates to the technical field of water heaters, and provides a control method and apparatus for a compression system, and an air energy heat pump water heater. The compression system comprises a compressor provided between an outdoor first heat exchanger and a second heat exchanger of a water tank, a first electronic expansion valve provided between the second heat exchanger and a flash evaporator, and a second electronic expansion valve provided between the flash evaporator and the first heat exchanger. The method comprises: executing a first control step at least once, executing the first control step every time comprising: determining a first target step number of the first electronic expansion valve; after the first electronic expansion valve is controlled to operate for a first time period according to the first target step number, determining a temperature difference between the current exhaust temperature of the compressor and the current highest water temperature of the water tank; when the temperature difference is less than a first preset value, decreasing the first target step number by a first correction step number, the first preset value being greater than 0 degree Celsius, and the first correction step number being greater than 0 step; and controlling the first electronic expansion valve to operate according to the decreased first target step number.
Inventors:
SHI FAN (CN)
OUYANG GUANG (CN)
BAI GUOJIAN (CN)
WU GAOLING (CN)
OUYANG GUANG (CN)
BAI GUOJIAN (CN)
WU GAOLING (CN)
Application Number:
PCT/CN2022/070983
Publication Date:
January 05, 2023
Filing Date:
January 10, 2022
Export Citation:
Assignee:
GREE ELECTRIC APPLIANCES INC ZHUHAI (CN)
International Classes:
F24H4/02; F25B30/06; F25B41/31; F25B49/02
Domestic Patent References:
| WO2017158782A1 | 2017-09-21 |
Foreign References:
| CN103808010A | 2014-05-21 | |||
| CN104807183A | 2015-07-29 | |||
| CN107388623A | 2017-11-24 | |||
| CN113432298A | 2021-09-24 | |||
| CN104024763A | 2014-09-03 | |||
| CN112781266A | 2021-05-11 | |||
| CN109668350A | 2019-04-23 | |||
| US20090199581A1 | 2009-08-13 | |||
| JP2012233626A | 2012-11-29 |
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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