CONTROL METHOD AND APPARATUS FOR VARIABLE FREQUENCY AIR CONDITIONER AND VARIABLE FREQUENCY AIR CONDITIONER - QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD

Title:

CONTROL METHOD AND APPARATUS FOR VARIABLE FREQUENCY AIR CONDITIONER AND VARIABLE FREQUENCY AIR CONDITIONER

Document Type and Number:

WIPO Patent Application WO/2020/215834

Kind Code:

A1

Abstract:

Disclosed in the present application are a control method and apparatus for a variable frequency air conditioner and a variable frequency air conditioner, belonging to the field of compressors. Said method comprises: calculating a target frequency f according to an inner coil temperature Tp of an air conditioner indoor unit; and determining whether the target frequency f is greater than a winding demarcation point frequency f4, if f is greater than or equal to f4, selecting a first winding mode of an electric motor and enabling an air conditioner compressor to operate to the winding demarcation point frequency f4, switching to a second winding mode of the electric motor, enabling the air conditioner compressor sequentially operating to the frequencies of three stall platforms to continue for a preset time, respectively, and enabling the air conditioner compressor to operate to the target frequency f. The present invention determines whether a target frequency f is greater than a winding demarcation point frequency f4, so as to control an electric motor of an air conditioner compressor to be connected to a first winding mode or a second winding mode, and then control the operating frequency and operating time of the compressor on each stall platform (oil return platform), facilitating a stable and reliable operation of the compressor.

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Inventors:

LUO RONGBANG (CN)
XU WENMING (CN)

Application Number:

PCT/CN2020/071669

Publication Date:

October 29, 2020

Filing Date:

January 13, 2020

Export Citation:

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Assignee:

QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD (CN)
HAIER SMART HOME CO LTD (CN)

International Classes:

F24F11/30; F24F11/89; F25B49/02; H02M5/16

Foreign References:

CN102967022A	2013-03-13
CN105066540A	2015-11-18
CN107425683A	2017-12-01
CN108626855A	2018-10-09
CN107101270A	2017-08-29
JP2005061765A	2005-03-10

Attorney, Agent or Firm:

BEIJING KANGSHENG INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)

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