Title:
METHOD FOR CONTROLLING ELECTRONIC EXPANSION VALVE DURING DEFROSTING PROCESS OF HEAT PUMP SYSTEM, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/280286
Kind Code:
A1
Abstract:
A method for controlling an electronic expansion valve during a defrosting process of a heat pump system, comprising: acquiring an actual temperature Tw of an outdoor environment and an actual temperature Tn of an indoor environment during a defrosting process of a heat pump system; inputting the actual temperature Tw of the outdoor environment and the actual temperature Tn of the indoor environment, as independent variables, into a pre-trained calculation model to determine an estimated degree of opening Epx of an electronic expansion valve; and controlling the electronic expansion valve on the basis of the estimated degree of opening Epx of the electronic expansion valve. Also provided is a storage medium storing a program for controlling an electronic expansion valve during a defrosting process of a heat pump system. According to the control method, the degree of opening value of an electronic expansion valve can be adjusted in real time under different outdoor and indoor environment temperature conditions, thereby ensuring that a refrigerant flowing back to a compressor is in a gas state, and avoiding the problem of the occurrence of liquid impact or even damage in a compressor.
Inventors:
ZHANG YAO (CN)
GAO YUANHAO (CN)
GAO YUANHAO (CN)
Application Number:
PCT/CN2022/104503
Publication Date:
January 12, 2023
Filing Date:
July 08, 2022
Export Citation:
Assignee:
QINGDAO HAIER AIR CONDITIONING ELECTRONIC CO LTD (CN)
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD (CN)
HAIER SMART HOME CO LTD (CN)
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD (CN)
HAIER SMART HOME CO LTD (CN)
International Classes:
F24F11/84; F24F11/42; F25B41/34; F25B47/02; F25B49/02
Foreign References:
| CN113639410A | 2021-11-12 | |||
| CN111765604A | 2020-10-13 | |||
| CN107642873A | 2018-01-30 | |||
| CN104949413A | 2015-09-30 | |||
| CN109520099A | 2019-03-26 | |||
| CN111878964A | 2020-11-03 | |||
| CN103234254A | 2013-08-07 | |||
| CN107023945A | 2017-08-08 | |||
| CN112443943A | 2021-03-05 | |||
| TW201120384A | 2011-06-16 | |||
| US20160091904A1 | 2016-03-31 |
Attorney, Agent or Firm:
HANRAY LAW FIRM (CN)
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