Title:
IN-PIPE GREASY DIRT RECOVERY METHOD FOR INDOOR UNIT
Document Type and Number:
WIPO Patent Application WO/2023/279615
Kind Code:
A1
Abstract:
The present invention relates to the technical field of air conditioner self-cleaning, and in particular to an in-pipe greasy dirt recovery method for an indoor unit. The present application aims to solve the problem of how to implement in-pipe greasy dirt recovery of the indoor unit. For this purpose, an air conditioner of the present application further comprises a recovery pipe having one end communicated with an outlet of an outdoor heat exchanger and the other end communicated with an air suction port of a compressor, and the recovery pipe is provided with an on-off valve. The method comprises: entering an in-pipe greasy dirt recovery mode of an indoor unit; controlling an air conditioner to run a refrigeration mode; controlling a compressor to be adjusted to a preset first recovery frequency; adjusting the opening degree of a throttling device, so that a coil temperature of an indoor heat exchanger is less than or equal to a preset temperature; after the coil temperature is less than or equal to the preset temperature and lasts for a first preset duration, controlling the air conditioner to be switched to a heating mode; and controlling the on-off valve to open and controlling the throttling device to open to a preset opening degree. According to the method of the present application, in-pipe greasy dirt recovery of the indoor unit can be implemented, and the problem of in-pipe dirty blockage of the indoor heat exchanger is solved.
Inventors:
LUO RONGBANG (CN)
Application Number:
PCT/CN2021/129818
Publication Date:
January 12, 2023
Filing Date:
November 10, 2021
Export Citation:
Assignee:
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD (CN)
QINGDAO HAIER AIR CONDITIONING ELECTRONIC CO LTD (CN)
HAIER SMART HOME CO LTD (CN)
QINGDAO HAIER AIR CONDITIONING ELECTRONIC CO LTD (CN)
HAIER SMART HOME CO LTD (CN)
International Classes:
F25B43/02; F24F11/84; F24F11/86; F25B47/00
Foreign References:
| CN110857809A | 2020-03-03 | |||
| JP2013257121A | 2013-12-26 | |||
| CN113483448A | 2021-10-08 | |||
| CN109297151A | 2019-02-01 | |||
| CN112032827A | 2020-12-04 |
Attorney, Agent or Firm:
HANRAY LAW FIRM (CN)
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