Ice maker operation fault diagnosis method and device, ice maker and refrigerator

CN122015371APending Publication Date: 2026-05-12WHIRLPOOL (CHINA) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WHIRLPOOL (CHINA) CO LTD
Filing Date
2025-12-30
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Existing fault diagnosis methods for ice makers have a delay, resulting in the motor being powered on for too long under abnormal conditions, which affects its service life and system reliability.

Method used

The control logic employs segmented operation, forced pause, and cumulative judgment. It decomposes the possible long-term abnormal operation of the motor into multiple short-term processes, inserts a forced cooling interval after each attempt, and uses a counter to count the number of consecutive timeouts to determine the fault.

Benefits of technology

It significantly reduces the risk of insulation aging and magnet demagnetization caused by motor overheating, improves the intelligence and reliability of system diagnosis, extends the service life of motor, and avoids false alarms caused by instantaneous interference and occasional factors.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses an ice maker operation fault diagnosis method and device, an ice maker and a refrigerator. According to the method, motor fault judgment is realized through cumulative judgment of segmented timeout times: a motor is controlled to operate, and a feedback signal is detected within a first timeout time; if the time is out, the motor is paused, and operation and detection are repeated after pause; and counting continuous timeout times, and judging a fault when a threshold value is reached. By limiting the single abnormal operation time and forcibly suspending heat dissipation, the temperature rise of the motor is effectively reduced, the service life of the motor is prolonged, and meanwhile, the fault diagnosis reliability is improved through accumulative judgment. The corresponding device, the ice maker and the refrigerator also have the advantages.
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