The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2026
Filed:
Dec. 29, 2023
Danfoss (Tianjin) Ltd., Tianjin, CN;
Yingke Sun, Nordborg, DK;
Wanzhen Liu, Nordborg, DK;
Qingyue Meng, Nordborg, DK;
Li Yao, Nordborg, DK;
Shizhong Ji, Nordborg, DK;
DANFOSS (TIANJIN) LTD., Tianjin, CN;
Abstract
A control method includes: a detection step of: detecting a vibration amplitude of the compressor; a determination step of: determining whether the detected vibration amplitude of the compressor is greater than or equal to a predetermined threshold; and a speed adjustment step of changing a switching frequency of a frequency converter or/and modulate a frequency of the compressor if the detected vibration amplitude of the compressor is greater than or equal to the predetermined threshold. A compressor system is also provided by an embodiment. The control method and the compressor system make it convenient to know whether abnormal vibration of the compressor occurs, and can avoid the resonance frequency range.