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CN-122015371-A - Ice machine operation fault diagnosis method and device, ice machine and refrigerator

CN122015371ACN 122015371 ACN122015371 ACN 122015371ACN-122015371-A

Abstract

The invention discloses an ice machine operation fault diagnosis method and device, an ice machine and a refrigerator. The method realizes motor fault judgment through accumulated judgment of sectional overtime times, namely controlling the motor to run and detecting a feedback signal in a first overtime time, suspending the motor if overtime, repeating running and detection after suspension, counting continuous overtime times, and judging faults if the continuous overtime times reach a threshold value. The invention effectively reduces the temperature rise of the motor, prolongs the service life of the motor by limiting the single abnormal operation time and forcing the heat dissipation to be suspended, and improves the reliability of fault diagnosis by accumulative judgment. The corresponding device, the ice maker and the refrigerator have the advantages.

Inventors

  • CHEN WEI

Assignees

  • 惠而浦（中国）股份有限公司

Dates

Publication Date
20260512
Application Date
20251230

Claims (10)

  1. 1. An ice maker operation failure diagnosis method, comprising: S1, controlling a motor of an ice machine to run in a specified direction; S2, judging whether a preset feedback signal is received within a preset first timeout time T1; S3, if the feedback signal is not received within the first timeout time T1, judging that the operation is overtime, and controlling the motor to stop operating for a preset pause time T2; S4, after the pause time T2 is over, controlling the motor to run again in the appointed direction, and repeating the steps S2-S3; S5, counting continuous timeout times in the appointed direction, and judging that the motor runs in the appointed direction and fails if the continuous timeout times reach a preset threshold value N, wherein N is an integer larger than 1.
  2. 2. The method for diagnosing an operational failure of an ice maker as recited in claim 1, wherein said first timeout period T1 is 8 seconds to 12 seconds, and said pause period T2 is 3 seconds to 7 seconds.
  3. 3. The method for diagnosing an operational failure of an ice maker according to claim 1 or 2, wherein said preset threshold N is 3.
  4. 4. The method for diagnosing an operational failure of an ice maker as set forth in claim 1, wherein said step of controlling the motor of the ice maker to operate in a specified direction and starting timing includes: S11, controlling a motor of the ice maker to operate in a first direction for driving the ice maker to return to a horizontal position.
  5. 5. The method for diagnosing an operational failure of an ice maker as set forth in claim 1, wherein said step of controlling the motor of the ice maker to operate in a specified direction and starting timing includes: S12, controlling a motor of the ice maker to operate in a second direction for driving the ice maker to execute the ice-separating action.
  6. 6. The ice maker operation fault diagnosis method according to claim 4 or 5, wherein said step of judging whether a preset feedback signal is received within a preset first timeout time T1 comprises: s21, judging whether a high-level signal or a low-level signal with preset duration is continuously detected within a preset first timeout time T1.
  7. 7. The ice maker operation fault diagnosis method according to claim 4 or 5, wherein said step of judging whether a preset feedback signal is received within a preset first timeout time T1 comprises: s22, judging whether a high-level signal or a low-level signal is detected within a preset first timeout time T1.
  8. 8. An ice maker operation failure diagnosis apparatus, comprising: The first control module is used for controlling the motor of the ice maker to run in a specified direction; the judging module is used for judging whether a preset feedback signal is received within a preset first timeout time T1; The second control module is used for judging that the operation is overtime if the feedback signal is not received within the first overtime time T1, and controlling the motor to stop operating for a preset pause time T2; the return module is used for returning to the step of executing the motor for controlling the ice maker to run in a specified direction after the pause time T2 is over; the determining module is used for counting the continuous timeout times in the appointed direction, and judging that the motor runs in the appointed direction and fails if the continuous timeout times reach a preset threshold value N, wherein N is an integer greater than 1.
  9. 9. The ice maker, comprising a motor, a position switch, and the ice maker operation failure diagnosis apparatus according to claim 8.
  10. 10. The refrigerator, comprising a cabinet and the ice maker of claim 9.

Description

Ice machine operation fault diagnosis method and device, ice machine and refrigerator Technical Field The invention relates to the technical field of household appliance control, in particular to an operation control method of an ice machine, and particularly relates to an operation fault diagnosis method and device of the ice machine, the ice machine and a refrigerator, wherein the operation fault diagnosis method and device can effectively protect a motor. Background The automatic ice making function of the household refrigerator is mainly realized by the ice maker, and the working process of the household refrigerator depends on a motor to drive a mechanical part to finish the actions of overturning, water injection, ice removal and the like of the ice grid. If the motor cannot normally operate to the target position due to mechanical clamping stagnation, abnormal load, signal faults and the like, the traditional fault detection method may have delay in judgment, so that the motor is electrified for too long in an abnormal state. The motor is in an unconventional working state for a long time, so that the coil is overheated, insulation aging is accelerated, and the service life of the motor and the reliability of the whole ice making system are affected. Therefore, there is a need for a fault diagnosis method that can actively protect a motor in a more timely manner to quickly identify operational anomalies and take measures to avoid damage to the motor due to continued anomalous operation. Disclosure of Invention The invention aims to solve the technical problem of solving the defect that the service life of a motor is damaged due to overlong power-on time of the motor in an abnormal state caused by delay in the conventional ice machine fault diagnosis method. To achieve the above object, in a first aspect, the present invention provides an operation failure diagnosis method of an ice maker, comprising: S1, controlling a motor of an ice machine to run in a specified direction; S2, judging whether a preset feedback signal is received within a preset first timeout time T1; S3, if the feedback signal is not received within the first timeout time T1, judging that the operation is overtime, and controlling the motor to stop operating for a preset pause time T2; S4, after the pause time T2 is over, controlling the motor to run again in the appointed direction, and repeating the steps S2-S3; S5, counting continuous timeout times in the appointed direction, and judging that the motor runs in the appointed direction and fails if the continuous timeout times reach a preset threshold value N, wherein N is an integer larger than 1. As an alternative embodiment, the first timeout T1 is 8 seconds to 12 seconds, and the pause T2 is 3 seconds to 7 seconds. As an alternative embodiment, the preset N value is 3. As an alternative embodiment, the step of controlling the motor of the ice maker to operate in a designated direction and starting timing includes: S11, controlling a motor of the ice maker to operate in a first direction for driving the ice maker to return to a horizontal position. As an alternative embodiment, the step of controlling the motor of the ice maker to operate in a designated direction and starting timing includes: S12, controlling a motor of the ice maker to operate in a second direction for driving the ice maker to execute the ice-separating action. As an alternative embodiment, the step of determining whether the preset feedback signal is received within the preset first timeout period T1 includes: s21, judging whether a high-level signal or a low-level signal with preset duration is continuously detected within a preset first timeout time T1. As an alternative embodiment, the step of determining whether the preset feedback signal is received within the preset first timeout period T1 includes: s22, judging whether a high-level signal or a low-level signal is detected within a preset first timeout time T1. In a second aspect, the present invention provides an ice maker operation failure diagnosis apparatus comprising: The first control module is used for controlling the motor of the ice maker to run in a specified direction; the judging module is used for judging whether a preset feedback signal is received within a preset first timeout time T1; The second control module is used for judging that the operation is overtime if the feedback signal is not received within the first overtime time T1, and controlling the motor to stop operating for a preset pause time T2; the return module is used for returning to the step of executing the motor for controlling the ice maker to run in a specified direction after the pause time T2 is over; the determining module is used for counting the continuous timeout times in the appointed direction, and judging that the motor runs in the appointed direction and fails if the continuous timeout times reach a preset threshold value N, wherein N is an integer greater than