CN112665298B - Refrigerator air door fault detection method and device, controller and refrigerator - Google Patents
Refrigerator air door fault detection method and device, controller and refrigerator Download PDFInfo
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- CN112665298B CN112665298B CN202011420358.1A CN202011420358A CN112665298B CN 112665298 B CN112665298 B CN 112665298B CN 202011420358 A CN202011420358 A CN 202011420358A CN 112665298 B CN112665298 B CN 112665298B
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Abstract
The application relates to a fault detection method and device for a refrigerator air door, a controller and a refrigerator. Wherein the method comprises the following steps: when the temperature of the refrigerator compartment is detected to be smaller than a preset first temperature threshold value, controlling the refrigerator air door to reset; after the air door of the refrigerator is reset for a first preset time, judging whether the current temperature of the refrigerator chamber is smaller than a first temperature threshold value or not, and if the current temperature of the refrigerator chamber is smaller than the first temperature threshold value, controlling the fan of the refrigerator to run at full speed; after the full-speed operation of the refrigerator fan is carried out for a second preset time, judging whether the current temperature of the refrigerator compartment is smaller than a preset second temperature threshold value or not; and if the current temperature of the refrigerator compartment is less than the second temperature threshold value, determining that the refrigerator air door has a fault. So set up, for the method of current detection air door trouble, can protect air door mechanism, avoid the meaningless wearing and tearing that reset many times and lead to, and can realize the fault detection of air door fast.
Description
Technical Field
The application relates to the technical field of refrigerators, in particular to a refrigerator air door fault detection method, a refrigerator air door fault detection device, a controller and a refrigerator.
Background
The refrigerator damper, which is a mechanism for controlling the amount of cold entering the refrigerating chamber, needs to be frequently opened and closed according to the temperature inside the refrigerating chamber and the cooling demand. If the air door is not normally opened or closed, the temperature of the refrigerating chamber is abnormal, and the food stored in the refrigerating chamber can be deteriorated even if the refrigerating chamber is operated for a long time. Therefore, it is very important to find the failure of the refrigerator damper in time during the operation of the refrigerator.
At present, whether a refrigerator air door has a fault is generally judged by controlling the air door to reset for multiple times when compartment temperature abnormity is detected. However, this detection method causes unnecessary wear of the damper structure due to multiple resets, and the detection time is long, and it is not possible to quickly and accurately determine whether the damper is malfunctioning.
Disclosure of Invention
The application provides a fault detection method, a fault detection device, a controller and a refrigerator of a refrigerator air door, and aims to solve the problems that an air door structure is unnecessarily worn due to repeated resetting in the conventional method for detecting whether the refrigerator air door is in fault, the detection time is long, and whether the air door is in fault can not be quickly and accurately determined.
The above object of the present application is achieved by the following technical solutions:
in a first aspect, an embodiment of the present application provides a method for detecting a failure of a refrigerator damper, which includes:
when the temperature of the refrigerator compartment is detected to be smaller than a preset first temperature threshold value, controlling the refrigerator air door to reset;
after the refrigerator air door is reset for a first preset time, judging whether the current temperature of the refrigerator compartment is smaller than the first temperature threshold value or not;
if the current temperature of the refrigerator compartment is less than the first temperature threshold value, controlling the full-speed operation of the refrigerator fan;
after the full-speed operation of the refrigerator fan is carried out for a second preset time, judging whether the current temperature of the refrigerator compartment is smaller than a preset second temperature threshold value or not; wherein the second temperature threshold is less than the first temperature threshold;
and if the current temperature of the refrigerator compartment is less than the second temperature threshold value, determining that the refrigerator air door has a fault.
Optionally, the second preset time is less than the first preset time.
Optionally, the determining whether the current temperature of the refrigerator compartment is less than a preset second temperature threshold further includes:
and if the current temperature of the refrigerator compartment is greater than or equal to the second temperature threshold, keeping the full-speed operation of the refrigerator fan and recording the duration, and controlling the refrigerator fan to operate based on the current refrigeration requirement until the current temperature of the refrigerator compartment is detected to be less than the second temperature threshold.
Optionally, the determining whether the current temperature of the refrigerator compartment is less than a preset second temperature threshold further includes:
if the current temperature of the refrigerator compartment is greater than or equal to the second temperature threshold, the full-speed operation of the refrigerator fan is kept, and the duration is recorded until the current temperature of the refrigerator compartment is detected to be less than the second temperature threshold or the duration reaches a third preset time, and the refrigerator fan is controlled to operate based on the current refrigeration requirement.
Optionally, the determining of the refrigerator damper fault further includes:
and sending a fault prompt to a user.
In a second aspect, an embodiment of the present application further provides a device for detecting a failure of a refrigerator damper, which includes:
the first control module is used for controlling the air door of the refrigerator to reset when the temperature of the refrigerator compartment is detected to be smaller than a preset first temperature threshold value;
the first judgment module is used for judging whether the current temperature of the refrigerator compartment is less than the first temperature threshold value or not after the refrigerator air door is reset for a first preset time;
the second control module is used for controlling the full-speed operation of the fan of the refrigerator if the current temperature of the refrigerator compartment is smaller than the first temperature threshold value;
the second judgment module is used for judging whether the current temperature of the refrigerator compartment is smaller than a preset second temperature threshold value or not after the full-speed operation of the refrigerator fan is carried out for a second preset time; wherein the second temperature threshold is less than the first temperature threshold;
and the determining module is used for determining that the refrigerator air door has a fault if the current temperature of the refrigerator compartment is less than the second temperature threshold.
Optionally, the second preset time is less than the first preset time.
Optionally, the apparatus further comprises:
and the third control module is used for keeping the full-speed operation of the refrigerator fan and recording the duration if the current temperature of the refrigerator compartment is greater than or equal to the second temperature threshold, and controlling the refrigerator fan to operate based on the current refrigeration requirement until the current temperature of the refrigerator compartment is detected to be less than the second temperature threshold.
Optionally, the apparatus further comprises:
and the fourth control module is used for keeping the full-speed operation of the refrigerator fan and recording the duration time if the current temperature of the refrigerator compartment is greater than or equal to the second temperature threshold, and controlling the refrigerator fan to operate based on the current refrigeration requirement until the current temperature of the refrigerator compartment is detected to be less than the second temperature threshold or the duration time reaches a third preset time.
Optionally, the apparatus further comprises:
and the reminding module is used for sending a fault reminding to a user after the refrigerator air door is determined to be in fault.
In a third aspect, an embodiment of the present application further provides a controller for a refrigerator, including:
a memory and a processor coupled to the memory;
the memory is used for storing a program, and the program is at least used for realizing the fault detection method of the refrigerator damper in any one of the first aspect;
the processor is used for calling and executing the program stored in the memory.
In a fourth aspect, an embodiment of the present application further provides a refrigerator, which is characterized in that the controller of the refrigerator according to the third aspect is provided.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
according to the technical scheme, the refrigerator air door is reset when the compartment temperature is smaller than a preset first temperature threshold value, after the refrigerator air door is reset for a first preset time, if the compartment temperature is still smaller than the first temperature threshold value, the full-speed operation of the refrigerator fan is controlled, and then after the full-speed operation of the refrigerator fan for a second preset time, if the compartment temperature is smaller than a preset second temperature threshold value (the second temperature threshold value is smaller than the first temperature threshold value), the fault of the refrigerator air door is determined. Compared with the existing method for detecting the air door fault, the method has the advantages that when the temperature of the compartment is detected to be too low, the air door is controlled to perform one-time reset operation, so that the air door mechanism can be protected, and the meaningless abrasion caused by repeated reset is avoided; and whether the air door breaks down or not is further determined by additionally arranging the step of controlling the full-speed operation of the fan, so that the flow of the cold air can be increased, more cold air can enter the compartment when the air door breaks down, the temperature of the compartment is further reduced, and the fault detection of the air door can be quickly realized.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
FIG. 1 is a schematic flow chart illustrating a method for detecting a failure of a refrigerator damper according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of a failure detection device for a refrigerator damper according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a controller of a refrigerator according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
In order to make the technical solution of the present application easier to understand, a brief description of the related art is first provided.
Whether detect refrigerator air door trouble at present, usually be when detecting the interior temperature anomaly of freezer, control the air door earlier and reset, then make the air door keep closed state or control the air door and remove the assigned position according to actual refrigeration demand, so operation a period, later according to the further judgement of freezer temperature: after the operation, if the temperature of the refrigerating chamber returns to normal, the air door returns to normal; and if the temperature of the refrigerating chamber is still abnormal, the air door is controlled to move to the specified position after being reset again, the operation is continued for a period of time, whether the temperature in the refrigerating chamber is recovered to be normal or not is continuously detected, if the temperature in the refrigerating chamber is still abnormal, the resetting and subsequent operation are executed again until the resetting frequency reaches the set frequency (generally 3 times), and finally the fault of the air door of the refrigerator is determined.
Therefore, in the detection mode, after the air door fails, the air door can be finally determined to be in failure after the air door is controlled to perform reset operation for many times (if the reset times are less, misjudgment may occur to influence the normal operation of the refrigerator), and unnecessary abrasion of the air door structure can be caused; moreover, after each reset, the refrigerator needs to continuously operate for a period of time, and then subsequent judgment can be carried out according to the current temperature of the compartment, so that a long time is needed when the failure of the air door is finally determined. That is, in the related art, it is not possible to quickly and accurately determine whether the damper is malfunctioning.
In order to solve the above problems, the present application provides an improved fault detection scheme for a refrigerator damper, which is described in detail below by way of embodiments.
Examples
Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a method for detecting a failure of a refrigerator damper according to an embodiment of the present application, where as shown in fig. 1, the method at least includes the following steps:
s101: when the temperature of the refrigerator compartment is detected to be smaller than a preset first temperature threshold value, controlling the refrigerator air door to reset;
specifically, in practical applications, in order to maintain the temperature of the refrigerator compartment at a set temperature (or temperature range), a temperature sensor is disposed in the refrigerator compartment, so that when the refrigerator is refrigerating, under the control of the control system, when the temperature of the refrigerator compartment detected by the temperature sensor is lower than a shutdown temperature threshold (also referred to as a shutdown point), the refrigeration of the refrigerator compartment is stopped, and at this time, the refrigerator damper should be in a completely closed state, so as to prevent cold air from entering the compartment, and further avoid a further decrease in the compartment temperature, but if the damper fails and is not completely closed, the cold air is still conducted to the compartment, and the compartment temperature is further decreased, so in this embodiment, if the compartment temperature decreases to be less than a preset first temperature threshold, it is indicated that the damper may fail (is not completely closed), and therefore, the damper is controlled to be reset to attempt to return the damper to normal, thereby enabling the room temperature to return to normal. At this time, if the actual condition is that the air door is not completely closed due to the step loss of the stepping motor for driving the air door to move, the air door can be normally restored after the air door is normally reset once.
In this embodiment, the control damper resetting means that the control damper is opened at a certain angle and then completely closed, and the damper needs to be closed by a certain number of steps more than the normal closing when being closed, that is, a locking process, so as to ensure that the damper can be completely closed.
In addition, it is easily understood that the refrigerator compartment referred to in the present embodiment refers to a compartment that performs cooling by a damper and a fan, such as a refrigerating compartment of an air-cooled refrigerator.
Furthermore, the first temperature threshold is a temperature value that the refrigerator compartment cannot reach when the refrigerator is operating normally but may reach when the refrigerator is operating abnormally, such as a certain value that is lowered on the basis of the shutdown temperature threshold, for example, for the refrigerating compartment, the first temperature threshold may be-1 ℃.
S102: after the refrigerator air door is reset for a first preset time, judging whether the current temperature of the refrigerator compartment is smaller than the first temperature threshold value or not;
specifically, if the air door of the refrigerator returns to normal (completely closed) after being reset, the temperature of the refrigerator compartment also returns to normal after the first preset time, that is, the current temperature of the refrigerator compartment should be greater than or equal to the first temperature threshold, so that the step continues to judge whether the air door is normal or not through the compartment temperature.
Wherein the first preset time may be 15 minutes.
S103: if the current temperature of the refrigerator compartment is less than the first temperature threshold value, controlling the full-speed operation of the refrigerator fan;
specifically, if it is determined in the previous step that the compartment temperature is still less than the first temperature threshold, it indicates that the problem is not solved by the previous control of the air door resetting, and in order to further determine whether the compartment temperature is too low due to the incomplete closing of the air door, in this embodiment, the cold air flow is increased by controlling the full-speed operation of the refrigerator fan, and then whether the air door is completely closed after being reset is determined. If the temperature of the intermediate chamber is determined to be greater than or equal to the first temperature threshold in the previous step, it indicates that the damper has been properly reset, and therefore the detection process can be exited, i.e., the subsequent steps are not performed.
S104: after the full-speed operation of the refrigerator fan is carried out for a second preset time, judging whether the current temperature of the refrigerator compartment is smaller than a preset second temperature threshold value or not; wherein the second temperature threshold is less than the first temperature threshold;
s105: and if the current temperature of the refrigerator compartment is less than the second temperature threshold value, determining that the refrigerator air door has a fault.
Specifically, under normal conditions, when the compartment temperature is less than the first preset threshold (less than the shutdown temperature threshold), which is equivalent to that there is no refrigeration demand for the compartment, the refrigerator fan may not operate at full speed, based on this, after the refrigerator fan is controlled to operate at full speed for the second preset time in step S103, if the damper is not completely closed after being reset, more cold air may enter the compartment, resulting in further reduction of the compartment temperature, and if the current compartment temperature is reduced to be less than the second temperature threshold, it may be determined that the compartment temperature is too low and is caused by the damper not being completely closed, that is, it may be determined that the damper has a fault.
Wherein the second temperature threshold is a value that is decreased by a certain amount based on the first temperature threshold, for example, when the first temperature threshold is-1 ℃, the second temperature threshold may be-2 ℃.
And, because the fan runs at full speed, the cold wind flow increases, therefore the cooling rate of compartment is faster, and on this basis, second preset time is preferred to be less than first preset time to can further shorten the time of obtaining the testing result from beginning to detect. For example, the second preset time may be 5 to 10 minutes, and the specific value depends on the actual situation, for example, the larger the power when the fan runs at full speed, the smaller the value of the second preset time may be.
According to the technical scheme, the refrigerator air door is controlled to reset when the compartment temperature is smaller than a preset first temperature threshold value, after the refrigerator air door is reset for a first preset time, if the compartment temperature is still smaller than the first temperature threshold value, the refrigerator fan is controlled to operate at full speed, and then after the refrigerator fan operates at full speed for a second preset time, if the compartment temperature is smaller than a preset second temperature threshold value (the second temperature threshold value is smaller than the first temperature threshold value), the refrigerator air door is determined to be in fault. Compared with the existing method for detecting the air door fault, the method has the advantages that when the temperature of the compartment is detected to be too low, the air door is controlled to perform one-time reset operation, so that the air door mechanism can be protected, and the meaningless abrasion caused by repeated reset is avoided; and whether the air door breaks down or not is further determined by additionally arranging the step of controlling the full-speed operation of the fan, so that the flow of the cold air can be increased, more cold air can enter the compartment when the air door breaks down, the temperature of the compartment is further reduced, and the fault detection of the air door can be quickly realized.
Further, in some embodiments, after step S104, the method further comprises: if the current temperature of the refrigerator compartment is greater than or equal to the second temperature threshold (and less than the first temperature threshold), the full-speed operation of the refrigerator fan is kept, the duration is recorded, and the refrigerator fan is controlled to operate based on the current refrigeration requirement until the current temperature of the refrigerator compartment is detected to be less than the second temperature threshold.
Specifically, the arrangement is such that the condition that the air leakage amount of the air door is small is handled, that is, in the actual use process, the air door may be not completely closed, but the actual air leakage amount is small and does not affect the current normal use basically, so that the condition can be found and handled in time (the condition is prevented from being further converted into a fault affecting the normal use) by a maintenance person, and therefore, the time (the duration time can be stored in the storage module) when the refrigerator fan continuously runs at full speed until the room temperature is less than the second temperature threshold value can be recorded, so that the maintenance person can judge according to the duration time. Wherein, the shorter the duration, the larger the air leakage rate of the air door. In addition, the refrigerator fan is controlled to operate based on the current refrigeration requirement, namely the rotating speed of the fan is adjusted according to the air quantity required by the actual refrigeration working condition.
However, in actual use, the damper is necessarily normally operated more often, that is, the incomplete closing does not occur more often, and based on this, the following improvement is made to the method: if the current temperature of the refrigerator compartment is greater than or equal to the second temperature threshold (and less than the first temperature threshold), the full-speed operation of the refrigerator fan is kept, and the duration is recorded until the current temperature of the refrigerator compartment is detected to be less than the second temperature threshold or the duration reaches a third preset time, and the refrigerator fan is controlled to operate based on the current refrigeration requirement.
That is, on the basis of the above scheme, if the damper operates normally, the current temperature of the refrigerator compartment is difficult to decrease to be less than the second temperature threshold, and in this case, in order to avoid the fan operating at full speed for a long time on the premise that there is no actual cooling demand in the compartment, a third preset time, for example, 1 hour, is set, so that when the time for operating at full speed of the fan reaches the third preset time, the fan is controlled to exit from full speed operation, and the rotation speed is restored to the air volume adjustment speed required according to the actual cooling condition.
Further, in some embodiments, after determining the refrigerator damper malfunction in step S105, the method further comprises: and sending a fault prompt to a user.
Specifically, the method for sending the fault prompt to the user includes: and sending reminding information to a smart device which is connected in advance, such as a smart phone of a user or a maintenance person, and/or displaying a fault code on a refrigerator control panel through a nixie tube and keeping 1Hz frequency to flicker to remind the user. In addition, the information such as the fault code, the fault occurrence time, the reset times of the air door and the like can be written into a storage module, for example, an EEPROM (Electrically Erasable Programmable read only memory), and when a follow-up maintenance worker carries out troubleshooting, the fault record can be checked through operating a control panel, so that the maintenance worker can conveniently carry out rapid diagnosis of the fault and analysis of the reason.
In addition, the embodiment of the application also provides a fault detection device of the refrigerator air door, which corresponds to the fault detection method of the refrigerator air door provided by the embodiment.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a failure detection device for a refrigerator damper according to an embodiment of the present application. As shown in fig. 2, the apparatus includes:
the first control module 21 is used for controlling the refrigerator air door to reset when the temperature of the refrigerator compartment is detected to be smaller than a preset first temperature threshold value;
the first judging module 22 is configured to judge whether the current temperature of the refrigerator compartment is less than the first temperature threshold after the refrigerator air door is reset for a first preset time;
the second control module 23 is configured to control the full-speed operation of the refrigerator fan if the current temperature of the refrigerator compartment is less than the first temperature threshold;
the second judging module 24 is configured to judge whether the current temperature of the refrigerator compartment is less than a preset second temperature threshold after the refrigerator blower runs at full speed for a second preset time; wherein the second temperature threshold is less than the first temperature threshold;
and the determining module 25 is used for determining that the refrigerator air door is in fault if the current temperature of the refrigerator compartment is less than the second temperature threshold.
Optionally, the second preset time is less than the first preset time.
Optionally, the apparatus further comprises:
and the third control module is used for keeping the full-speed operation of the refrigerator fan and recording the duration if the current temperature of the refrigerator compartment is greater than or equal to the second temperature threshold, and controlling the refrigerator fan to operate based on the current refrigeration requirement until the current temperature of the refrigerator compartment is detected to be less than the second temperature threshold.
Optionally, the apparatus further comprises:
and the fourth control module is used for keeping the full-speed operation of the refrigerator fan and recording the duration time if the current temperature of the refrigerator compartment is greater than or equal to the second temperature threshold, and controlling the refrigerator fan to operate based on the current refrigeration requirement until the current temperature of the refrigerator compartment is detected to be less than the second temperature threshold or the duration time reaches a third preset time.
Optionally, the apparatus further comprises:
and the reminding module is used for sending a fault reminding to a user after the refrigerator air door is determined to be in fault.
The specific implementation method of the steps implemented by the functional modules may refer to corresponding contents in the foregoing method embodiments, and details are not described here.
In addition, the embodiment of the application also provides a controller of the refrigerator corresponding to the fault detection method of the refrigerator air door provided by the embodiment.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a controller of a refrigerator according to an embodiment of the present application. As shown in fig. 3, the controller includes:
a memory 31 and a processor 32 connected to the memory 31;
the memory 31 is used for storing a program for implementing at least the failure detection method of the refrigerator damper described in the above method embodiment;
the processor 32 is used to call and execute the program stored in the memory 31.
After the controller is applied to the refrigerator, the fault detection of the refrigerator damper can be realized according to the control method, and the specific implementation process of the method realized by the program in the controller can refer to the corresponding content in the foregoing method embodiment, and is not described in detail here.
According to the technical scheme, the refrigerator air door is controlled to reset when the compartment temperature is smaller than a preset first temperature threshold value, after the refrigerator air door is reset for a first preset time, if the compartment temperature is still smaller than the first temperature threshold value, the refrigerator fan is controlled to operate at full speed, and then after the refrigerator fan operates at full speed for a second preset time, if the compartment temperature is smaller than a preset second temperature threshold value (the second temperature threshold value is smaller than the first temperature threshold value), the refrigerator air door is determined to be in fault. Compared with the existing method for detecting the air door fault, the method has the advantages that when the temperature of the compartment is detected to be too low, the air door is controlled to perform one-time reset operation, so that the air door mechanism can be protected, and the meaningless abrasion caused by repeated reset is avoided; and whether the air door breaks down or not is further determined by additionally arranging the step of controlling the full-speed operation of the fan, so that the flow of the cold air can be increased, more cold air can enter the compartment when the air door breaks down, the temperature of the compartment is further reduced, and the fault detection of the air door can be quickly realized.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (12)
1. A method for detecting a fault of a refrigerator damper is characterized by comprising the following steps:
when the temperature of the refrigerator compartment is detected to be smaller than a preset first temperature threshold value, controlling the refrigerator air door to reset;
after the refrigerator air door is reset for a first preset time, judging whether the current temperature of the refrigerator compartment is smaller than the first temperature threshold value or not;
if the current temperature of the refrigerator compartment is less than the first temperature threshold value, controlling the full-speed operation of the refrigerator fan;
after the full-speed operation of the refrigerator fan is carried out for a second preset time, judging whether the current temperature of the refrigerator compartment is smaller than a preset second temperature threshold value or not; wherein the second temperature threshold is less than the first temperature threshold;
and if the current temperature of the refrigerator compartment is less than the second temperature threshold value, determining that the refrigerator air door has a fault.
2. The method of claim 1, wherein the second predetermined time is less than the first predetermined time.
3. The method of claim 1, wherein determining whether the current temperature of the refrigerator compartment is less than a second predetermined temperature threshold further comprises:
and if the current temperature of the refrigerator compartment is greater than or equal to the second temperature threshold, keeping the full-speed operation of the refrigerator fan and recording the duration, and controlling the refrigerator fan to operate based on the current refrigeration requirement until the current temperature of the refrigerator compartment is detected to be less than the second temperature threshold.
4. The method of claim 1, wherein determining whether the current temperature of the refrigerator compartment is less than a second predetermined temperature threshold further comprises:
if the current temperature of the refrigerator compartment is greater than or equal to the second temperature threshold, the full-speed operation of the refrigerator fan is kept, and the duration is recorded until the current temperature of the refrigerator compartment is detected to be less than the second temperature threshold or the duration reaches a third preset time, and the refrigerator fan is controlled to operate based on the current refrigeration requirement.
5. The method of any of claims 1-4, wherein the determining a refrigerator damper failure further comprises:
and sending a fault prompt to a user.
6. A failure detection device of a refrigerator damper, comprising:
the first control module is used for controlling the air door of the refrigerator to reset when the temperature of the refrigerator compartment is detected to be smaller than a preset first temperature threshold value;
the first judgment module is used for judging whether the current temperature of the refrigerator compartment is less than the first temperature threshold value or not after the refrigerator air door is reset for a first preset time;
the second control module is used for controlling the full-speed operation of the fan of the refrigerator if the current temperature of the refrigerator compartment is smaller than the first temperature threshold value;
the second judgment module is used for judging whether the current temperature of the refrigerator compartment is smaller than a preset second temperature threshold value or not after the full-speed operation of the refrigerator fan is carried out for a second preset time; wherein the second temperature threshold is less than the first temperature threshold;
and the determining module is used for determining that the refrigerator air door has a fault if the current temperature of the refrigerator compartment is less than the second temperature threshold.
7. The apparatus of claim 6, wherein the second predetermined time is less than the first predetermined time.
8. The apparatus of claim 6, further comprising:
and the third control module is used for keeping the full-speed operation of the refrigerator fan and recording the duration if the current temperature of the refrigerator compartment is greater than or equal to the second temperature threshold, and controlling the refrigerator fan to operate based on the current refrigeration requirement until the current temperature of the refrigerator compartment is detected to be less than the second temperature threshold.
9. The apparatus of claim 6, further comprising:
and the fourth control module is used for keeping the full-speed operation of the refrigerator fan and recording the duration time if the current temperature of the refrigerator compartment is greater than or equal to the second temperature threshold, and controlling the refrigerator fan to operate based on the current refrigeration requirement until the current temperature of the refrigerator compartment is detected to be less than the second temperature threshold or the duration time reaches a third preset time.
10. The apparatus of any one of claims 6-9, further comprising:
and the reminding module is used for sending a fault reminding to a user after the refrigerator air door is determined to be in fault.
11. A controller of a refrigerator, comprising:
a memory and a processor coupled to the memory;
the memory for storing a program for implementing at least the method for detecting a failure of a damper of a refrigerator according to any one of claims 1 to 5;
the processor is used for calling and executing the program stored in the memory.
12. A refrigerator characterized in that a controller of the refrigerator according to claim 11 is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN115479430B (en) * | 2022-09-22 | 2024-01-23 | 珠海格力电器股份有限公司 | Method and device for determining cold leakage reason and refrigerator |
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