Invention Grant
- Patent Title: Air conditioner provided with means for predicting and detecting failure in compressor and method for predicting and detecting the failure
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Application No.: US15757779Application Date: 2015-09-11
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Publication No.: US11280530B2Publication Date: 2022-03-22
- Inventor: Shuuhei Tada , Katsuaki Nagahashi , Koji Naito
- Applicant: Hitachi-Johnson Controls Air Conditioning, Inc.
- Applicant Address: JP Tokyo
- Assignee: Hitachi-Johnson Controls Air Conditioning, Inc.
- Current Assignee: Hitachi-Johnson Controls Air Conditioning, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Mattingly & Malur, PC
- International Application: PCT/JP2015/075815 WO 20150911
- International Announcement: WO2017/042949 WO 20170316
- Main IPC: F25B49/02
- IPC: F25B49/02 ; F04B49/10 ; F04B35/04 ; F25B49/00 ; F25B13/00 ; F04B49/06 ; F04C23/00 ; F04C28/28 ; F04C18/02
Abstract:
To predict and detect a failure in a compressor provided in an air conditioner, the air conditioner is provided with: a heat exchanger; the compressor; piping connecting the heat exchanger and the compressor with each other; and a control unit controlling the compressor and having a compressor failure predicting and detecting means, and in this air conditioner, the compressor failure predicting and detecting means of the control unit includes: a current detecting part detecting a driving current driving the compressor; a pulsation detecting part detecting pulsation in a driving current detected by the current detecting part; and an anomaly determining part predicting or detecting any failure in the compressor based on a magnitude and a duration of pulsation in a driving current detected by the pulsation detecting part.
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