CN117029358A

CN117029358A - Refrigerator air door fault detection method and device, refrigerator and storage medium

Info

Publication number: CN117029358A
Application number: CN202310967292.5A
Authority: CN
Inventors: 金晓武; 张文; 杨东亚; 尹云东; 肖耀杰; 张金福
Original assignee: Qingdao Haier Refrigerator Co Ltd; Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Priority date: 2023-08-02
Filing date: 2023-08-02
Publication date: 2023-11-10

Abstract

The application relates to the technical field of intelligent equipment, and discloses a method and device for detecting faults of a refrigerator air door, a refrigerator and a storage medium. The method comprises the following steps: acquiring the temperature of a first coil before the operation of a refrigerator air door motor; acquiring the current running current of the air door motor and the second coil temperature of the air door motor when the air door motor runs, and acquiring the current temperature rise value between the second coil temperature and the first coil temperature; and detecting the air door fault according to the current running current and the current temperature rise value. Therefore, the automatic detection of the refrigerator air door faults is realized, the running stability and safety of the refrigerator are improved, and the intelligence of the refrigerator is further improved.

Description

Refrigerator air door fault detection method and device, refrigerator and storage medium

Technical Field

The application relates to the technical field of intelligent equipment, in particular to a method and a device for detecting faults of a refrigerator air door, a refrigerator and a storage medium.

Background

At present, the refrigeration mode of the refrigerator can adopt an air cooling mode, and the air cooling refrigerator has no core component of an electric air door. When the refrigerating chamber or the temperature changing chamber needs to be refrigerated, the refrigerator air door motor starts to operate, a baffle plate in a rectangular frame is driven to swing through a set of gear reduction transmission mechanism, and the opening of the baffle plate is controlled through forward and reverse rotation and pulse step number of the stepping motor, so that the cold air flow of the refrigerating chamber of the refrigerator is controlled.

In addition, when the air door of the refrigerator is failed or damaged, the refrigerating capacity of the refrigerating chamber or the temperature changing chamber of the refrigerator is greatly reduced, and when the air door is severe, the refrigerator is not refrigerated, so that the user experience is affected. However, the aging damage of the air door is not easy to find, generally, after the refrigerator is used for a period of time, if the refrigerator is powered off after the refrigeration is abnormal, a maintainer detects the refrigerator to judge whether the air door is aged or abnormally damaged, and therefore, the refrigerator air door fault detection method not only needs manpower, wastes time and labor, but also needs the refrigerator to stop, influences the use of the refrigerator, and also causes poor user experience.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a method and a device for detecting faults of a refrigerator air door, the refrigerator and a storage medium, and aims to solve the technical problem that the automation of detecting faults of the refrigerator air door is not high.

In some embodiments, the method comprises:

acquiring the temperature of a first coil before the operation of a refrigerator air door motor;

acquiring the current running current of the air door motor and the second coil temperature of the air door motor when the air door motor runs, and acquiring the current temperature rise value between the second coil temperature and the first coil temperature;

and detecting the air door fault according to the current running current and the current temperature rise value.

In some embodiments, before the obtaining the first coil temperature before the refrigerator damper motor operates, the method further includes:

and generating a throttle driving instruction under the condition that the set greenhouse of the refrigerator is determined to start the refrigeration operation.

In some embodiments, after the obtaining the first coil temperature before the refrigerator damper motor operates, the method further includes:

and controlling the operation of the air door motor according to the air door driving instruction.

In some embodiments, the performing damper fault detection includes:

the method comprises the steps of obtaining a current operation voltage matched with a current operation current through a current sensing circuit, wherein a first input voltage of an operational amplifier in the circuit sensing circuit is the product of a first resistor and the current operation current, a second input voltage is equal to the first input voltage, and the output voltage of the operational amplifier is divided to obtain the current operation voltage;

and under the condition that the current operation voltage is greater than the voltage threshold, if the current temperature rise value is greater than the temperature threshold, determining that the air door is in fault operation, and carrying out fault warning processing.

In some embodiments, the performing damper fault detection further comprises:

under the condition that the current operation voltage is smaller than or equal to a voltage threshold value, if the current temperature rise value is larger than the temperature threshold value, determining that the air door is in abnormal operation, and carrying out abnormal warning treatment;

and under the condition that the current operation voltage is greater than the voltage threshold value, if the air door is determined to be in abnormal operation, performing abnormal warning processing.

In some embodiments, the performing damper fault detection further comprises:

and under the condition that the current operating voltage is smaller than or equal to the voltage threshold value, if the current temperature rise value is smaller than or equal to the temperature threshold value, determining that the air door is in normal operation.

In some embodiments, the apparatus comprises:

the first acquisition module is configured to acquire a first coil temperature before the refrigerator air door motor operates;

a second acquisition module configured to acquire a current operating current when the damper motor is operating and a second coil temperature of the damper motor, and to obtain a current temperature rise value between the second coil temperature and the first coil temperature

And the fault detection module is configured to detect the air door fault according to the current running current and the current temperature rise value.

In some embodiments, the apparatus for refrigerator damper fault detection includes a processor and a memory storing program instructions, the processor being configured to perform the above-described method for refrigerator damper fault detection when executing the program instructions.

In some embodiments, the refrigerator includes: comprises a refrigerator body; the device for detecting the refrigerator air door faults is arranged on the refrigerator body.

In some embodiments, the storage medium stores program instructions that, when executed, perform the above-described method for refrigerator damper fault detection.

The method and the device for detecting the faults of the refrigerator air door and the refrigerator provided by the embodiment of the disclosure can realize the following technical effects:

the refrigerator air door fault detection can be carried out by acquiring the corresponding running current and coil temperature rise when the refrigerator air door motor runs, so that the refrigerator air door fault detection can be carried out under the condition that the refrigerator is not powered off and stopped, the automatic detection of the refrigerator air door fault is realized, the running stability and safety of the refrigerator are improved, and the intelligence of the refrigerator is further improved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

fig. 1 is a schematic view of a refrigerator according to an embodiment of the present disclosure;

fig. 2 is a schematic flow chart of a method for detecting a refrigerator damper fault according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram of a current sensing circuit for use in a refrigerator according to an embodiment of the present disclosure;

fig. 4 is a schematic flow chart of a method for detecting a refrigerator damper fault according to an embodiment of the present disclosure;

fig. 5 is a schematic structural view of a damper failure detection apparatus for a refrigerator according to an embodiment of the present disclosure;

fig. 6 is a schematic structural view of a damper failure detection apparatus for a refrigerator according to an embodiment of the present disclosure;

fig. 7 is a schematic structural view of a damper failure detection apparatus for a refrigerator according to an embodiment of the present disclosure;

fig. 8 is a schematic view of a refrigerator provided in an embodiment of the present disclosure.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

In the embodiment of the disclosure, when a refrigerating chamber or a temperature changing chamber in the refrigerator needs to be refrigerated, the refrigerator air door motor starts to operate, and the air door fault detection can be performed by acquiring the operation current corresponding to the operation of the refrigerator air door motor and comparing the coil temperature rise obtained correspondingly before the operation, so that the refrigerator air door fault detection can be performed without the condition that the refrigerator is powered off and stopped, the automatic detection of the refrigerator air door fault is realized, the operation stability and safety of the refrigerator are improved, and the intelligence of the refrigerator is further improved.

Fig. 1 is a schematic structural view of a refrigerator according to an embodiment of the present disclosure. As shown in fig. 1, the refrigerator includes: a device 1 and a damper 2 for detecting the failure of a refrigerator damper. Wherein, the air door 2 is an electric air door, namely, the air door motor 3 is also included. When the refrigerating chamber or the temperature changing chamber needs to be refrigerated, the refrigerator air door motor starts to operate, a baffle plate in a rectangular frame is driven to swing through a set of gear reduction transmission mechanism, and the opening of the baffle plate is controlled through forward and reverse rotation and pulse step number of the stepping motor, so that the cold air flow of the refrigerating chamber of the refrigerator is controlled. Therefore, the device 1 for detecting the fault of the refrigerator fan can be a main control circuit board of the refrigerator, can be connected with the air door motor 3 through a circuit, can acquire the corresponding running current and coil temperature rise when the air door motor 3 of the refrigerator runs, and can detect the fault of the air door according to the running current and the coil temperature rise.

In some embodiments, corresponding fault alert processing may also be performed. As shown in fig. 1, the refrigerator further includes an atmosphere lamp 4, and similarly, the apparatus 1 for detecting a failure of a refrigerator damper is electrically connected to the atmosphere lamp 4, and once the apparatus 1 for detecting a failure of a refrigerator damper determines that the damper is faulty or abnormal, the atmosphere lamp 4 can be controlled to perform a corresponding display, for example: not bright or flickering. Of course, in the embodiment of the present disclosure, the refrigerator may include a display interface, and once the device 1 for detecting the failure of the air door of the refrigerator determines that the air door is failed or abnormal, an image-text warning may be performed on the display interface, or a voice warning may be performed through a voice module, or the like.

Therefore, the refrigerator can detect the air door fault by acquiring the corresponding running current and coil temperature rise when the refrigerator air door motor runs. Fig. 2 is a schematic flow chart of a method for detecting a refrigerator damper fault according to an embodiment of the present disclosure. As shown in fig. 2, the refrigerator damper fault detection process includes:

step 201: the temperature of a first coil before the operation of a refrigerator air door motor is obtained.

When the refrigerating chamber or the temperature changing chamber in the refrigerator needs to be refrigerated, the refrigerator or a main control circuit board of the refrigerator needs to drive a damper motor to operate, namely in some embodiments, a damper driving instruction is generated under the condition that the set greenhouse of the refrigerator is determined to start refrigeration operation. Wherein, setting the greenhouse may include: a refrigerating compartment or a temperature changing compartment. The refrigerator or a main control circuit board of the refrigerator is used for setting the refrigerating requirements of the greenhouse, for example: the temperature requirement may determine the drive pulse frequency, duty cycle, etc. of the damper motor, i.e., to produce the corresponding damper drive command. And when the air door driving instruction is issued to the air door motor, the refrigerator or a main control circuit board of the refrigerator needs to acquire the coil temperature of the air door motor, namely, the first coil temperature before the operation of the air door motor of the refrigerator is acquired, and the method further comprises the following steps: and generating a throttle driving instruction under the condition that the set greenhouse of the refrigerator is determined to start the refrigeration operation.

Under the condition that the refrigerating chamber or the temperature changing chamber needs to be refrigerated, the air door motor does not operate, at the moment, the temperature of the first coil before the operation of the air door motor of the refrigerator is acquired, and then the air door motor is driven to operate.

Step 202: and acquiring the current running current of the air door motor and the second coil temperature of the air door motor during running, and acquiring the current temperature rise value between the second coil temperature and the first coil temperature.

In some embodiments, after the refrigerator or the main control circuit board of the refrigerator obtains the first coil temperature before the refrigerator damper motor operates, the damper driving instruction may be sent to the damper motor, so that the damper motor is in an operating state, that is, the refrigerator or the main control circuit board of the refrigerator controls the damper motor to operate according to the damper driving instruction.

Thus, when the air door motor is in an operating state, the refrigerator or a main control circuit board of the refrigerator can directly acquire the current operating current of the air door motor and the temperature of a second coil of the air door motor in the operating state in real time or at fixed time. And under the condition that the second coil temperature is acquired, the difference between the second coil temperature and the first coil temperature, namely the current temperature rise value, can be acquired.

Step 203: and detecting the air door fault according to the current running current and the current temperature rise value.

In the related art, during the operation process of the refrigerator, the operation current of the air door motor can be converted into the operation voltage through the current-voltage conversion circuit, so that the air door fault detection can be performed according to the operation voltage and the coil temperature rise.

Thus, in some embodiments, performing damper fault detection includes: the method comprises the steps of obtaining a current operation voltage matched with a current operation current through a current sensing circuit, wherein a first input voltage of an operational amplifier in the circuit sensing circuit is a product of a first resistor and the current operation current, a second input voltage is equal to the first input voltage, an output voltage of the operational amplifier is divided to obtain the current operation voltage, and under the condition that the current operation voltage is larger than a voltage threshold value, if a current temperature rise value is larger than the temperature threshold value, determining that an air door is in fault operation, and carrying out fault warning processing.

The circuit sensing circuit has the function of current-voltage conversion and can comprise an operational amplifier and a voltage dividing circuit. Fig. 3 is a schematic diagram of a current sensing circuit for use in a refrigerator according to an embodiment of the present disclosure. The current sensing circuit may be located in the apparatus for refrigerator damper fault detection shown in fig. 1, or the current sensing circuit may be located in a main control circuit board of the refrigerator.

As shown in fig. 3, after the damper current input Ip, that is, the present running current of the damper motor is input to the current sensing circuit, the voltages of the respective parts are as follows: v- =ip RN1, v+=v-, i.e. the first input voltage V-is the product of the first resistor RN1 and the current operating current Ip, and the second input voltage v+ is equal to the first input voltage V-.

Thus, the output voltage v1= (1+rg3/RG 1) ×v+ of the operational amplifier divides V1, and then the damper voltage output Vout is the current operating voltage=rg5/(rg4+rg5) ×v1, and therefore vout=rg5/(rg4+rg5) ×1+rg3/rg1) ×ip×rn1.

If RN1 = 1 Ω, RG3 = 60.4kΩ, RG1 = 10kΩ, rg5 = 56kΩ, rg4 = 5.6kΩ, vout = 56/(5.6+56) ×v1 = 0.91 (1+60.4/10) ×v+=6.4×v- =6.4×ip.

The damper motor operating current may correspond to a threshold, for example: 60mA, according to Vout= 6.4 ip, the corresponding voltage threshold may be 384mV. The coil temperature rise and the corresponding threshold value, namely the temperature threshold value, can be 50K, 60K and 70K. Wherein the voltage threshold and the temperature threshold may be determined based on the performance of the refrigerator, the damper, and the damper motor.

Therefore, after the voltage threshold value and the temperature threshold value are stored in the refrigerator, if the obtained current operation voltage is larger than the voltage threshold value and the obtained current temperature rise value is larger than the temperature threshold value, the air door can be determined to be in fault operation.

As above, if the voltage threshold is 384mV and the temperature threshold is 60K, then if the current operating voltage Vd >384mV and the current temperature rise value >60K, it may be determined that the refrigerator damper is in faulty operation.

In the embodiment of the disclosure, the refrigerator air door is determined to be in fault operation, and fault warning processing can be performed. As shown in fig. 1, when the refrigerator includes an atmosphere lamp, if it is determined that the refrigerator damper is in a fault operation, the atmosphere lamp may be controlled to be in an off state. Or in some embodiments, the refrigerator comprises a display interface and a voice module, so that fault warning processing of graphics, texts and sounds can be performed.

When the current operating voltage is greater than the voltage threshold and the current temperature rise value is greater than the temperature threshold, it may be determined that the damper is in fault operation, in some embodiments, when only one of the current operating voltage and the current temperature rise value is greater than the corresponding threshold, it may be determined that the damper is in abnormal operation, that is, when the current operating voltage is less than or equal to the voltage threshold, if the current temperature rise value is greater than the temperature threshold, it is determined that the damper is in abnormal operation, and an abnormal alarm process is performed; and under the condition that the current running voltage is greater than the voltage threshold, if the current temperature rise value is less than or equal to the temperature threshold, determining that the air door is in abnormal running, and carrying out abnormal warning processing.

The air door is in a state of fault operation and is more harmful to the refrigerator than the air door is in a state of abnormal operation, namely, when the air door is in fault operation, the air door can be aged and damaged, the normal use of the refrigerator can be damaged, and a user can need after-sales service. When the air door is in abnormal operation, the air door may have some sporadic problems, or the air door may have some aging problems, etc., and the air door can be erased abnormally by restarting the refrigerator or simple operation of a user.

Of course, the abnormal warning processing can be displayed through the atmosphere lamp, namely, when the refrigerator air door is determined to be in abnormal operation, the atmosphere lamp can be controlled to be in a flickering state. Or, the display interface and the voice module are used for carrying out image-text and voice warning processing.

In some embodiments, the damper may be determined to be in normal operation when both the current operating voltage and the current temperature rise value are less than or equal to the corresponding threshold values. When the current running voltage is smaller than or equal to the voltage threshold value, if the current temperature rise value is smaller than or equal to the temperature threshold value, the air door is determined to be in normal running, and at the moment, if the atmosphere lamp is in a long-lighting state, the atmosphere lamp is controlled.

Therefore, in the embodiment of the disclosure, the air door fault detection can be performed by acquiring the corresponding running current and coil temperature rise when the refrigerator air door motor runs, so that the refrigerator air door fault detection can be performed without the condition that the refrigerator is powered off and stopped, the automatic detection of the refrigerator air door fault is realized, the running stability and safety of the refrigerator are improved, and the intelligence of the refrigerator is further improved.

The following integrates the operation flow into a specific embodiment, and illustrates the refrigerator damper fault detection process provided by the embodiment of the application.

In this embodiment, as shown in fig. 1, the refrigerator includes a main control circuit board, which is a device for detecting faults of a refrigerator air door, and further includes an air door, an air door motor and an atmosphere lamp, and the main control circuit board includes a current sensing circuit shown in fig. 3, that is, vout=6.4×ip. And a voltage threshold of 384mV and a temperature threshold of 60K is maintained.

Fig. 4 is a schematic flow chart of a method for detecting a refrigerator damper fault according to an embodiment of the present disclosure. As shown in fig. 4, the refrigerator damper fault detection process includes:

step 401: judging whether the refrigerating compartment or the temperature change compartment requires refrigeration? If yes, go to step 402, otherwise, return to step 401.

Step 402: the refrigerator generates a damper driving instruction and acquires a first coil temperature of a refrigerator damper motor.

Step 403: the refrigerator sends an air door driving instruction to control the operation of an air door motor.

Step 404: the refrigerator obtains the current running current of the air door motor and the second coil temperature of the air door motor when the air door motor runs, and obtains the current temperature rise value delta T between the second coil temperature and the first coil temperature.

Step 405: by the current sensing circuit, the refrigerator obtains a present operating voltage Vd corresponding to a present operating current according to vout= 6.4×ip.

Step 406: judging that Vd >384mV is true? If yes, go to step 407, otherwise, go to step 409.

Step 407: judging whether Δt >60K is true? If yes, go to step 408, otherwise, go to step 410.

Step 408: the refrigerator determines that the air door is in fault operation, and controls the atmosphere lamp to be in an extinguishing state.

Step 409: judging whether Δt >60K is true? If yes, go to step 410, otherwise, go to step 411.

Step 410: the refrigerator determines that the air door is in abnormal operation, and controls the atmosphere lamp to be in a flickering state.

Step 411: the refrigerator determines that the air door is in normal operation, and controls the atmosphere lamp to be in a long-lighting state.

Therefore, in this embodiment, the refrigerator can perform the fault detection of the air door by acquiring the corresponding running current and coil temperature rise when the refrigerator air door motor runs, so that the fault detection of the refrigerator air door can be performed without the condition that the refrigerator is powered off and stopped, the automatic detection of the fault of the refrigerator air door is realized, and the running stability and safety of the refrigerator are also improved. In addition, the warning processing can be carried out through the atmosphere lamp, so that the safety and the user experience of the refrigerator are further improved.

According to the above-described process for refrigerator damper fault detection, a device for refrigerator damper fault detection may be constructed.

Fig. 5 is a schematic structural diagram of a damper failure detection apparatus for a refrigerator according to an embodiment of the present disclosure. As shown in fig. 6, the damper failure detection apparatus 500 for a refrigerator includes: a first acquisition module 510, a second acquisition module 520, and a fault detection module 530.

A first acquisition module 510 is configured to acquire a first coil temperature before operation of the refrigerator damper motor.

The second obtaining module 520 is configured to obtain a current running current when the damper motor runs and a second coil temperature of the damper motor, and obtain a current temperature rise value between the second coil temperature and the first coil temperature.

The fault detection module 530 is configured to perform damper fault detection based on the present operating current and the present temperature rise value.

In some embodiments, further comprising: and the determination generating module is configured to generate a throttle driving instruction under the condition that the set greenhouse of the refrigerator is determined to start the refrigeration operation.

In some embodiments, further comprising: and the driving control module is configured to control the operation of the air door motor according to the air door driving instruction after acquiring the current operation voltage of the air door of the refrigerator.

In some embodiments, the fault detection module 530 includes:

the conversion unit is configured to obtain a current operation voltage matched with a current operation current through the current sensing circuit, wherein a first input voltage of the operational amplifier in the circuit sensing circuit is a product of a first resistor and the current operation current, a second input voltage is equal to the first input voltage, and the output voltage of the operational amplifier is divided to obtain the current operation voltage;

the first processing unit is configured to determine that the air door is in fault operation and perform fault warning processing when the current temperature rise value is greater than the temperature threshold value under the condition that the current operation voltage is greater than the voltage threshold value.

In some embodiments, the fault detection module 530 further includes:

the second processing unit is configured to determine that the air door is in abnormal operation and perform abnormal warning processing when the current temperature rise value is larger than the temperature threshold value under the condition that the current operation voltage is smaller than or equal to the voltage threshold value; and under the condition that the current running voltage is greater than the voltage threshold, if the current temperature rise value is less than or equal to the temperature threshold, determining that the air door is in abnormal running, and carrying out abnormal warning processing.

In some embodiments, the fault detection module 530 further includes:

and the third processing unit is configured to determine that the air door is in normal operation when the current temperature rise value is smaller than or equal to the temperature threshold value under the condition that the current operation voltage is smaller than or equal to the voltage threshold value.

The process of detecting the air door fault by the air door fault detection device for the refrigerator provided by the embodiment of the application is exemplified by the following specific embodiment.

Fig. 6 is a schematic structural diagram of a damper failure detection apparatus for a refrigerator according to an embodiment of the present disclosure. As shown in fig. 6, the damper failure detection apparatus 500 for a refrigerator includes: the first acquisition module 510, the second acquisition module 520, the failure detection module 530, the determination generation module 540, and the drive control module 550, and the failure processing module 530 includes a conversion unit 531, a first processing unit 532, a second processing unit 533, and a third processing unit 534.

The determination generation module 540 may generate a damper drive command when the refrigerator fresh food compartment or the temperature change compartment requires refrigeration. And, after the first obtaining module 510 obtains the first coil temperature of the damper motor of the refrigerator, the driving control module 550 may send a damper driving command to control the damper motor to operate. Thus, the second obtaining module 520 may obtain the current running current of the damper motor and the second coil temperature of the damper motor, and obtain the current temperature rise Δt between the second coil temperature and the first coil temperature.

Thus, the conversion unit 531 in the fault detection module 530 may obtain the current operating voltage Vd corresponding to the current operating current according to vout= 6.4×ip through the current sensing circuit. While Vd >384mV, and Δt >60K, the first processing unit 532 may determine that the damper is in a malfunction operation, and control the atmosphere lamp to be in an off state.

If Vd >384mV, Δt is less than or equal to 60K, the second processing unit 533 may determine that the damper is in abnormal operation, and control the atmosphere lamp to be in a blinking state. Alternatively, when Vd is less than or equal to 384mV and ΔT is greater than 60K, the second processing unit 533 may determine that the damper is in abnormal operation and control the atmosphere lamp to be in a blinking state.

And if Vd is less than or equal to 384mV and DeltaT is less than or equal to 60K, the third processing unit 534 determines that the air door is in fault operation and controls the atmosphere lamp to be in an off state.

Therefore, in this embodiment, after the corresponding running current and coil temperature rise during the running of the refrigerator air door motor are obtained, the device for detecting the fault of the refrigerator air door can perform the fault detection of the air door, so that the fault detection of the refrigerator air door can be performed without the condition that the refrigerator is powered off and stopped, the automatic detection of the fault of the refrigerator air door is realized, and the running stability and safety of the refrigerator are also improved. In addition, the warning processing can be carried out through the atmosphere lamp, so that the safety and the user experience of the refrigerator are further improved.

Referring to fig. 7, an embodiment of the present disclosure provides an apparatus 800 for refrigerator damper fault detection, including:

a processor (processor) 1000 and a memory (memory) 1001, and may also include a communication interface (Communication Interhace) 1002 and a bus 1003. The processor 1000, the communication interface 1002, and the memory 1001 may communicate with each other via the bus 1003. The communication interface 1002 may be used for information transfer. The processor 1000 may call logic instructions in the memory 1001 to perform the method for refrigerator damper fault detection of the above-described embodiment.

Further, the logic instructions in the memory 1001 described above may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand alone product.

The memory 1001 is used as a computer readable storage medium for storing a software program and a computer executable program, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 1000 performs functional applications and data processing by executing program instructions/modules stored in the memory 1001, i.e., implements the method for refrigerator damper fault detection in the above-described method embodiment.

The memory 1001 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for functions; the storage data area may store data created according to the use of the terminal device, etc. In addition, the memory 1001 may include a high-speed random access memory, and may also include a nonvolatile memory.

The embodiment of the disclosure provides a fault detection device for a refrigerator air door, which comprises: the refrigerator damper fault detection system includes a processor and a memory storing program instructions, the processor being configured to execute a refrigerator damper fault detection method when executing the program instructions.

Referring to fig. 8, an embodiment of the present disclosure provides a refrigerator 800 including: the refrigerator body and the above-described damper failure detection apparatus 500 for a refrigerator (700). A fault detection device 500 (700) for a refrigerator damper is mounted to the refrigerator body. The mounting relationships described herein are not limited to placement within a product, but include mounting connections to other components of a product, including but not limited to physical, electrical, or signal transmission connections, etc. Those skilled in the art will appreciate that the fault detection device 500 (700) for a refrigerator damper may be adapted to a viable refrigerator body to enable other viable embodiments.

The disclosed embodiments provide a storage medium storing program instructions that, when executed, perform a method for refrigerator damper fault detection as described above.

The disclosed embodiments provide a computer program product comprising a computer program stored on a storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the above-described method for refrigerator damper fault detection.

The storage medium may be a transitory computer readable storage medium or a non-transitory computer readable storage medium.

Embodiments of the present disclosure may be embodied in a software product stored on a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of a method according to embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium including: a plurality of media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or a transitory storage medium.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may involve structural, logical, electrical, process, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The scope of the embodiments of the present disclosure encompasses the full ambit of the claims, as well as all available equivalents of the claims. When used in the present application, although the terms "first," "second," etc. may be used in the present application to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without changing the meaning of the description, so long as all occurrences of the "first element" are renamed consistently and all occurrences of the "second element" are renamed consistently. The first element and the second element are both elements, but may not be the same element. Moreover, the terminology used in the present application is for the purpose of describing embodiments only and is not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a," "an," and "the" (the) are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this disclosure is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, when used in the present disclosure, the terms "comprises," "comprising," and/or variations thereof, mean that the recited features, integers, steps, operations, elements, and/or components are present, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method or apparatus comprising such elements. In this context, each embodiment may be described with emphasis on the differences from the other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method sections disclosed in the embodiments, the description of the method sections may be referred to for relevance.

Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. The skilled artisan may use different methods for each particular application to achieve the described functionality, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.

In the embodiments disclosed herein, the disclosed methods, articles of manufacture (including but not limited to devices, apparatuses, etc.) may be practiced in other ways. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the units may be merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form. The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to implement the present embodiment. In addition, each functional unit in the embodiments of the present disclosure may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than that disclosed in the description, and sometimes no specific order exists between different operations or steps. For example, two consecutive operations or steps may actually be performed substantially in parallel, they may sometimes be performed in reverse order, which may be dependent on the functions involved. Each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Claims

1. A method for refrigerator damper fault detection, comprising:

2. The method of claim 1, wherein prior to the obtaining the first coil temperature before the refrigerator damper motor is operated, further comprising:

3. The method of claim 2, wherein after the obtaining the first coil temperature before the operation of the damper motor of the refrigerator, further comprising:

4. A method according to any one of claims 1-3, wherein said performing damper fault detection comprises:

5. The method of claim 4, wherein said performing damper fault detection further comprises:

and under the condition that the current running voltage is greater than the voltage threshold, if the current temperature rise value is less than or equal to the temperature threshold, determining that the air door is in abnormal running, and carrying out abnormal warning processing.

6. The method of claim 5, wherein said performing damper fault detection further comprises:

7. An apparatus for refrigerator damper fault detection, comprising:

the second acquisition module is configured to acquire the current running current of the air door motor and the second coil temperature of the air door motor when the air door motor runs, and acquire the current temperature rise value between the second coil temperature and the first coil temperature;

8. An apparatus for refrigerator damper fault detection comprising a processor and a memory storing program instructions, wherein the processor is configured, when executing the program instructions, to perform the method for refrigerator damper fault detection of any one of claims 1 to 6.

9. A refrigerator, comprising:

a refrigerator body;

the apparatus for refrigerator damper fault detection as claimed in claim 7 or 8, mounted to the refrigerator body.

10. A storage medium storing program instructions which, when executed, perform the method for refrigerator damper fault detection of any one of claims 1 to 6.