CN112503846A - Method for detecting state of refrigerator air door motor, refrigerator and storage medium - Google Patents
Method for detecting state of refrigerator air door motor, refrigerator and storage medium Download PDFInfo
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- CN112503846A CN112503846A CN202011041907.4A CN202011041907A CN112503846A CN 112503846 A CN112503846 A CN 112503846A CN 202011041907 A CN202011041907 A CN 202011041907A CN 112503846 A CN112503846 A CN 112503846A
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- state
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- air door
- refrigerating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/02—Sensors detecting door opening
Abstract
The embodiment of the invention relates to the technical field of refrigerators, in particular to a method for detecting the state of a refrigerator air door motor, a refrigerator and a storage medium.
Description
Technical Field
The embodiment of the invention relates to the technical field of refrigerators, in particular to a method for detecting the state of a refrigerator air door motor and a refrigerator.
Background
A refrigerator, which is a common consumer product, uses a compressor to drive a refrigerant to circulate through a pipeline, and cools air in each storage space to keep food fresh or frozen.
The refrigerator is generally divided into a refrigerating chamber and a freezing chamber in structure, each chamber is provided with an air inlet, an air return opening, a fan and an evaporator chamber, the air inlet and the air outlet are respectively communicated with the evaporator chamber, an evaporator is arranged in the evaporator chamber, and each evaporator is communicated with a compressor. The compressor compresses the refrigerant into high-pressure gas, the high-pressure gas passes through the evaporator to exchange heat with air in the evaporator chamber, the refrigerant is gasified to absorb heat, the temperature of the air in the evaporator chamber is reduced, cold air is formed, air convection is driven by the fan, and the cold air generated by the evaporator is conveyed to the corresponding compartment. The air door is arranged on the pipeline of the compressor and the refrigerating chamber evaporator and can be driven to be opened or closed by the air door motor according to a control signal so as to control the temperature of the refrigerating chamber.
In the refrigerator with the structure, when the temperature of one sensor of the refrigerating chamber or the freezing chamber is higher than a set target temperature, the control panel sends a signal to drive the compressor to work, and the evaporator continuously absorbs ambient heat and cools ambient air; the fan is also started to operate, cool air is continuously delivered to each compartment, and hot air in each compartment is delivered to the evaporator chamber through the circulating air duct to be cooled, so that cool air circulation is formed between the evaporator chamber and the refrigerating chamber or the freezing chamber, and the temperature of each compartment is continuously reduced. When the temperature of the refrigerating chamber is reduced to the target temperature, the air door motor drives the air door to be closed, and other chambers are continuously refrigerated; when the freezer temperature also drops to the target temperature, the compressor and fan are stopped and no further cooling is performed. By doing so, the temperature of each compartment of the refrigerator is maintained within the temperature range set by the user.
However, the current refrigerator cannot monitor the operation state of the damper motor, once the damper motor fails, the refrigerator is abnormally cooled and cannot normally work, and further cannot give a clear indication of the failure state of the damper motor, so that a user can only initiatively contact with after-sales repair, and the refrigerator is repaired according to experience after sales, thereby causing low maintenance efficiency, high maintenance cost and poor user experience.
Disclosure of Invention
The embodiment of the invention mainly solves the technical problem of providing a method for detecting the state of a refrigerator air door motor, which can monitor the running state of the air door motor in real time.
In order to solve the above technical problem, in a first aspect, an embodiment of the present invention provides a method for detecting a state of a damper motor of a refrigerator, including:
acquiring a temperature sequence of the refrigerating chamber in a preset time period of the same refrigerating cycle;
and determining the state of the air door motor according to the variation trend of the temperature in the temperature sequence, wherein the state comprises a fault state or a working state, the fault state comprises an opening fault or a closing fault, and the working state comprises normal opening or normal closing.
In some embodiments, the temperature sequence comprises a first temperature sequence, and the obtaining the temperature sequence of the refrigeration compartments within a preset time period of the same refrigeration cycle comprises:
the method comprises the steps of obtaining a first temperature sequence of a refrigerating chamber in a first preset time period, wherein the refrigerating chamber is in a refrigerating state in the first preset time period.
In some embodiments, the determining the state of the damper motor according to the trend of the temperature in the temperature sequence includes:
and if the temperature in the first temperature sequence is in gradient decreasing, determining that the state of the air door motor is normally opened, otherwise, determining that the state of the air door motor is in an opening fault.
In some embodiments, the temperature sequence further includes a second temperature sequence, and the obtaining the temperature sequence of the refrigeration compartments within the preset time period of the same refrigeration cycle further includes:
and acquiring a second temperature sequence of the refrigerating chamber in a second preset time period, wherein the refrigerating chamber is in an uncooled state in the second preset time period.
In some embodiments, the determining the state of the damper motor according to the trend of the temperature change in the temperature sequence further includes:
and if the temperature in the second temperature sequence is increased in a gradient mode, determining that the state of the air door motor is normally closed, otherwise, determining that the state of the air door motor is a closed fault.
In some embodiments, the refrigerator includes a heater, the method further comprising:
when detecting for the first time the state of air door motor is fault state, control the refrigerating plant stop work of refrigerator, and control the heater is right air door motor heating third is preset for a long time.
In some embodiments, the method further comprises:
and detecting the state of the air door motor again, if the state of the air door motor is still in a fault state, determining that the fault state is a destructive fault, and otherwise, determining that the fault state is an accidental fault.
In some embodiments, the method further comprises: and prompting the destructive fault.
In some embodiments, before the step of obtaining the temperature sequence of the refrigeration compartment within the preset time period, the method further includes:
confirming whether the working state of the refrigerating device is normal work or not;
if yes, judging whether the refrigerating chamber door and the freezing chamber door are both closed;
if yes, executing the step of acquiring the temperature sequence of the refrigerating chamber in the preset time period.
In order to solve the above technical problem, in a second aspect, an embodiment of the present invention provides a refrigerator, including:
the refrigerator comprises a refrigerator main body, a refrigerating chamber, a freezing chamber, a temperature measuring device and a refrigerating device, wherein the refrigerating device is used for refrigerating the refrigerating chamber and the freezing chamber, the temperature measuring device is used for detecting the temperature of the refrigerating chamber, the refrigerating device comprises a compressor, a refrigerating chamber evaporator and a freezing chamber evaporator, and an air door is arranged on a pipeline between the compressor and the refrigerating chamber evaporator;
the air door motor is used for driving the opening and closing of the air door;
the heater is used for heating the air door motor;
the controller is respectively connected with the refrigerator main body, the air door motor and the heater;
the controller includes:
at least one processor, and
a memory communicatively coupled to the at least one processor, wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of the first aspect as described above.
To solve the above technical problem, in a third aspect, the present invention provides a non-transitory computer-readable storage medium storing computer-executable instructions for causing an electronic device to perform the method according to the first aspect
The embodiment of the invention has the following beneficial effects: different from the situation in the prior art, the method for detecting the state of the air door motor provided by the embodiment of the invention can determine that the state of the air door motor is one of the normal opening fault, the normal closing fault and the closing fault by acquiring the temperature sequence of the refrigerating chamber in the preset time period of the same refrigerating cycle and according to the change trend of the temperature in the temperature sequence, and is helpful for reminding a user of timely maintaining the air door motor when the air door motor has the fault (the opening fault or the closing fault).
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;
FIG. 2 is a schematic view of the connection of the controller to the refrigerator main body, damper motor and heater shown in FIG. 1;
FIG. 3 is a schematic diagram of the controller shown in FIG. 2;
FIG. 4 is a schematic flow chart illustrating a method for detecting a state of a damper motor of a refrigerator according to an embodiment of the present invention;
FIG. 5 is a schematic flow chart illustrating a sub-process of step S23 in the method of FIG. 4;
FIG. 6 is a schematic flow chart illustrating a sub-process of step S24 in the method of FIG. 4;
FIG. 7 is a flowchart illustrating a method for detecting a state of a damper motor of a refrigerator according to an embodiment of the present invention.
Fig. 8 is a flowchart illustrating a method for detecting a state of a damper motor of a refrigerator according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It should be noted that, if not conflicted, the various features of the embodiments of the invention may be combined with each other within the scope of protection of the present application. Additionally, while functional block divisions are performed in apparatus schematics, with logical sequences shown in flowcharts, in some cases, steps shown or described may be performed in sequences other than block divisions in apparatus or flowcharts. Further, the terms "first," "second," "third," and the like, as used herein, do not limit the data and the execution order, but merely distinguish the same items or similar items having substantially the same functions and actions.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1 and 2, the refrigerator 100 includes a refrigerator main body 10, a damper motor 20, a heater 30, and a controller 40, and the controller 40 is connected to the refrigerator main body 10, the damper motor 20, and the heater 30, respectively.
The refrigerator main body 10 includes a refrigerating chamber 11, a freezing chamber 12, a temperature measuring device and a refrigerating device (not shown), and the temperature measuring device and the refrigerating device are disposed inside the refrigerator main body 10. The refrigerating chamber 11 and the freezing chamber 12 are used to receive items, such as food, respectively. The refrigerating device is a core component for refrigerating the refrigerator, and is used for refrigerating the refrigerating chamber and the freezing chamber. Specifically, refrigerating plant includes compressor, walk-in evaporimeter, freezer evaporimeter and two fans, and each evaporimeter all is located the evaporimeter room that corresponds, and the fan is installed respectively in evaporimeter room one side, walk-in evaporimeter room and walk-in intercommunication, freezer evaporimeter room and freezer intercommunication, walk-in evaporimeter and freezer evaporimeter respectively with the compressor intercommunication, wherein, be provided with the air door on the pipeline of compressor and walk-in evaporimeter, the air door can be opened or close by air door motor drive according to control signal to whether the control refrigerant flows in the walk-in evaporimeter.
Specifically, for refrigerating the refrigerating chamber, the refrigerant is compressed into a high-pressure gas state by the compressor, and then passes through the refrigerating chamber evaporator to exchange heat with air in the refrigerating chamber evaporator chamber, the refrigerant is gasified to absorb heat, so that the temperature of the air in the refrigerating chamber evaporator chamber is reduced, namely cold air is formed, and then the fan blows and convects to convey the cold air to the refrigerating chamber. To the refrigeration of freezer, through the compressor compresses into high-pressure gaseous with the refrigerator, passes through the freezer evaporimeter again, with the air in the freezer evaporimeter room carries out the heat exchange, and refrigerant gasification heat absorption makes the air temperature in the freezer evaporimeter room reduces, forms cold air promptly, and the rethread fan blast convection carries cold air extremely the freezer.
For the temperature control of the refrigerating chamber, the opening and closing degree of the damper is controlled by the damper motor 20, and the temperature of the refrigerating chamber 11 can be controlled. Specifically, the air door is installed in a rectangular frame, the rectangular frame is installed on a pipeline between the compressor and the refrigerating chamber evaporator, the air door motor 20 drives the air door to swing through a set of gear reduction transmission mechanism, and the opening degree of the air door is controlled through positive and negative rotation and pulse step number of the air door motor, so that the flow of refrigerant entering the refrigerating chamber evaporator is controlled, and the temperature of the refrigerating chamber 11 of the refrigerator is further controlled.
The heater 30 is used for heating the damper motor 20, so as to prevent the damper motor 20 from being stuck due to icing. It is understood that the heater 30 may be a heating wire, and of course, in some embodiments, the heater 30 may be integrated with the damper motor.
The temperature measuring device is used for detecting the temperature of the refrigerating chamber 11, and it can be understood that the temperature measuring device can be a temperature sensor. When the temperature in the refrigerating chamber 11 measured by the temperature measuring device is higher than a predetermined target temperature, the controller 40 controls the damper motor to be turned on to open the damper, thereby cooling the air in the refrigerating chamber 11 and lowering the temperature of the refrigerating chamber 11 to the target temperature. When the temperature in the refrigerating chamber 11 measured by the temperature measuring device is lower than the target temperature, the controller 40 controls the damper motor 20 to close, so that the damper is closed, thereby stopping cooling the air in the refrigerating chamber 11 and keeping the temperature of the refrigerating chamber 11 at the target temperature.
As can be seen from the above, the normal operation of the damper motor 20 determines the temperature in the refrigerating chamber 11, and if the damper motor 20 fails, the refrigerator 100 may be abnormally cooled and may not normally operate. In this embodiment, the controller 40 may detect the state of the damper motor 20 in real time through the temperature of the refrigerating compartment detected by the temperature measuring device. And, when the air door motor 20 is stuck due to freezing, the air door motor can be heated by the heater 30, so as to eliminate the problem of freezing and sticking.
Specifically, as shown in fig. 3, the controller 40 includes at least one processor 41 (one processor is illustrated in fig. 2) and a memory 42 communicatively coupled via a system bus or otherwise.
The processor 41 is configured to provide computing and control capabilities to control the refrigerator 100 to perform corresponding tasks, for example, to control the refrigerator 100 to perform any one of the methods for detecting the state of the refrigerator damper motor according to the embodiments of the present invention described below.
The memory 42, which is a non-transitory computer readable storage medium, can be used to store non-transitory software programs, non-transitory computer executable programs, and modules, such as program instructions/modules corresponding to the method for detecting the state of the damper motor of a refrigerator in the embodiment of the present invention. The processor 41 may implement the method of detecting the state of the refrigerator damper motor in any of the method embodiments described below by executing non-transitory software programs, instructions, and modules stored in the memory 42. In particular, the memory 42 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, memory 42 may also include memory located remotely from the processor, which may be connected to the processor via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
It should be noted that the structure of the refrigerator 100 is only for exemplary illustration, and in an exemplary application, the method for detecting the state of the damper motor of the refrigerator provided by the following embodiments of the invention may be further extended to other suitable refrigerators, not limited to the refrigerator shown in fig. 1, for example, to a refrigerator including a temperature changing chamber.
Referring to fig. 4, an embodiment of the present invention provides a method for detecting a state of a motor of a refrigerator door, as shown in fig. 4, the method S20 includes, but is not limited to, the following steps:
s23: and acquiring a temperature sequence of the refrigerating chamber in a preset time period of the same refrigerating cycle.
S24: and determining the state of the air door motor according to the variation trend of the temperature in the temperature sequence, wherein the state comprises a fault state or a working state, the fault state comprises an opening fault or a closing fault, and the working state comprises normal opening or normal closing.
As can be seen from the control of the refrigerating operation of the refrigerating chamber, the refrigerating operation of the refrigerating chamber is intermittent, the refrigerating chamber is refrigerated when the temperature in the refrigerating chamber is higher than the target temperature, and the refrigerating operation is stopped when the temperature in the refrigerating chamber is lower than the target temperature, that is, the temperature of the refrigerating chamber is maintained at the target temperature. The refrigerating chamber is in a continuous refrigerating state, or the refrigerating chamber is in a continuous non-refrigerating state.
The temperature sequence may be obtained during a preset time period when the refrigerating compartment is in a certain continuous refrigerating state, for example, when the refrigerating compartment is in a refrigerating state during a preset time period T, temperatures are collected every 1 minute for 1 minute to 3 minutes of the preset time period T to obtain a temperature sequence [ T1, T2, T3], or temperatures are collected every 1 minute for 2 minutes to 4 minutes of the preset time period T to obtain a temperature sequence, or temperatures are collected every 2 minutes or 0.5 minutes for the preset time period T to obtain a temperature sequence [ T1, T2.
Similarly, the temperature sequence may be obtained during a preset time period when the refrigerating compartment is in a certain continuous non-refrigerating state, for example, when the refrigerating compartment is in a non-refrigerating state during a preset time period P, the temperature sequence [ P1, P2, P3] is obtained by collecting the temperature every 1 minute from 1 minute to 3 minutes of the preset time period P, or the temperature sequence [ P1, p2..
The variation trend of the temperature sequence can reflect the refrigeration condition of the refrigerating chamber, and the refrigeration condition is controlled by the air door motor. Thus, the state of the damper motor can be determined to be one of a normal open, an open failure, a normal close, and a close failure according to the trend of the temperature sequence.
In this embodiment, the temperature sequence of the refrigeration chamber within the preset time period of the same refrigeration cycle is obtained, and according to the variation trend of the temperature sequence, the state of the air door motor can be determined to be one of the normal opening fault, the normal closing fault and the closing fault.
In some embodiments, referring to fig. 5, the temperature sequence includes a first temperature sequence, and the step S23 includes:
s231: the method comprises the steps of obtaining a first temperature sequence of a refrigerating chamber in a first preset time period, wherein the refrigerating chamber is in a refrigerating state in the first preset time period.
The first temperature sequence is a temperature sequence obtained within the first preset time period when the refrigerating chamber is in a refrigerating state. Since the refrigerating chamber is in a refrigerating state in the first preset time period, the first temperature sequence can reflect the operation state of the damper motor when the refrigerating chamber is in the refrigerating state.
That is, in this embodiment, it is determined that the state of the damper motor when the refrigerating compartment is in the cooling state is the normal open or the open failure, by the trend of the first temperature sequence.
In some embodiments, referring to fig. 6, the step S24 includes:
step S241: and if the temperature in the first temperature sequence is in gradient decreasing, determining that the state of the air door motor is normally opened, otherwise, determining that the state of the air door motor is in an opening fault.
For example, if t1> t2> t3 in the first temperature sequence [ t1, t2, t3] indicates that cold air is continuously input into the refrigerating chamber, the damper motor is normally opened, and the damper is normally opened. If t1< t2< t3, t1< t2, t2> t3, t1> t2 and t2< t3 in the first temperature sequence [ t1, t2 and t3], the cold air input in the refrigerating chamber is blocked, and therefore, the opening fault of the air door motor can be determined, and the air door is not normally opened.
In this embodiment, whether the damper motor is normally open or has an open fault may be determined by whether the temperatures in the first temperature sequence are decreasing in gradient.
It is understood that in other embodiments, the functional relationship of the temperatures in the first temperature sequence can be set according to the refrigeration characteristics of the refrigeration device to determine whether the state of the damper motor is normal opening or opening failure. For example, when the cold air output of the refrigeration device converges after monotonically increasing, the temperature in the first temperature sequence monotonically decreases and then converges.
In some embodiments, referring to fig. 5, the temperature sequence further includes a second temperature sequence, and the step S23 further includes:
s232: and acquiring a second temperature sequence of the refrigerating chamber in a second preset time period, wherein the refrigerating chamber is in an uncooled state in the second preset time period.
The second temperature sequence is a temperature sequence obtained within the second preset time period when the refrigerating chamber is in an uncooled state. Since the refrigerating chamber is in the non-refrigeration state in the second preset time period, the variation trend of the second temperature sequence can reflect the operation state of the damper motor when the refrigerating chamber is in the non-refrigeration state.
That is, in this embodiment, it is determined that the state of the damper motor when the refrigerating compartment is in the non-cooling state is the normal closing or the closing failure, by the trend of the second temperature sequence.
In some embodiments, referring to fig. 6, the step S24 further includes:
s242: and if the temperature in the second temperature sequence is increased in a gradient mode, determining that the state of the air door motor is normally closed, otherwise, determining that the state of the air door motor is a closed fault.
For example, if p1< p2< p3 in the second temperature sequence [ p1, p2, p3] indicates that there is no cold air input in the refrigerating chamber, and the cold air in the refrigerating chamber is continuously emitted, for example, the food in the refrigerating chamber is heat-exchanged with the outside air and there is no cold air input, resulting in an increase in temperature in the refrigerating chamber. At the moment, the state of the air door motor is normally closed, so that the air door is normally closed. If the p1> p2> p3, p1> p2, p2< p3, or p1< p2, p2> p3 in the second temperature sequence [ p1, p2, p3], the cold air input in the refrigerating chamber is indicated, so that the condition that the fan is not normally closed and a closing fault occurs can be determined, and the air door is not normally closed.
In this embodiment, whether the damper motor is normally closed or has a closed fault may be determined by whether the temperatures in the second temperature sequence are decreasing in gradient.
It will be appreciated that in other embodiments, the temperature function of the second temperature sequence may be set based on the closed position of the damper to determine whether the damper motor is normally closed or has a closed fault. For example, when the damper is slowly closed at a constant speed, the temperature in the second temperature sequence is increased at a monotonous constant speed.
In some embodiments, the refrigerator includes a heater, and referring to fig. 7, the method further includes:
s25: when detecting for the first time the state of air door motor is fault state, control the refrigerating plant stop work of refrigerator, and control the heater is right air door motor heating third is preset for a long time.
In daily use, the refrigerator is always in an operating state, so that a cooling state and a non-cooling state are alternately performed for the refrigerating chamber to maintain the temperature of the refrigerating chamber as a target temperature. That is, the collection of the temperature sequence and the detection of the air door motor are continuously carried out, so that the effect of real-time monitoring is achieved.
It can be understood that, since the damper motor is close to the refrigerating chamber evaporator, i.e., is always in a low temperature environment, the damper motor is easily frozen, and thus, the frozen damper motor may also have the above-mentioned fault condition. In this case, if the user performs after-sales repair without knowing that the problem is merely freezing, user time and repair costs are wasted. In order to solve the problem of freezing and blocking, in the embodiment, when the state of the air door motor is detected for the first time and is in a fault state, the refrigerating device of the refrigerator is controlled to stop working, namely the refrigerator stops refrigerating, and the heater is controlled to heat the air door motor for a third preset time so as to eliminate the problem of freezing and blocking. The first detection that the state of the air door motor is the fault state means that the air door motor is firstly detected in a certain refrigeration cycle that the state of the air door motor is the fault state.
In this embodiment, the fault state may be an open fault or a closed fault. For example, detect for the first time the state of air door motor is for opening the trouble, then the air door motor probably appears freezing the card problem of dying, and leads to the state of air door motor for opening the trouble, and the air door can not normally be opened, in order to get rid of the freezing card problem of dying, control the heater is right air door motor heating third is predetermine for a long time, for example, heats 5 minutes to get rid of the freezing of air door motor, on the one hand, can make open the trouble automatic recovery, make the air door motor normally opens, on the other hand is of value to the accuracy that improves follow-up detection.
For another example, when detecting for the first time the state of air door motor is closed trouble, then the air door motor probably appears freezing the card problem of dying, and leads to the state of air door motor for closed trouble, and the air door can not normally be closed, and in order to get rid of freezing the card and die, control the heater is right air door motor heating third is predetermineeing for a long time, for example, heats 5 minutes to get rid of the icing of air door motor, on the one hand, can make closed trouble self-repairing makes the air door motor normally closes, and on the other hand is of value to the accuracy that improves follow-up detection.
In some embodiments, referring to fig. 7, the method further comprises:
s26: and detecting the state of the air door motor again, if the state of the air door motor is still in a fault state, determining that the fault state is a destructive fault, and otherwise, determining that the fault state is an accidental fault.
And the step of detecting the state of the air door motor again refers to the step of continuously detecting the air door motor for many times after the air door motor is heated when the fault state is detected in a certain refrigeration cycle. And if the state of the air door motor is still a fault state, determining that the fault state is a destructive fault, otherwise, determining that the fault state is an accidental fault. For the destructive fault, the air door motor cannot be repaired after being heated, and for the accidental fault, the air door motor can be automatically repaired after being heated, namely, the accidental fault is the freezing and blocking problem. For example, when the refrigerating chamber is in a refrigerating state, the state of the damper motor is detected as an opening fault for the first time, the refrigerating device is controlled to stop working, the damper motor is heated for 5 minutes, the damper motor is detected after heating, if the detection result of the second detection or the third detection is the fault state, the first detected fault state is a destructive fault, and if the detection result of the second detection or the third detection is normal opening, the first detected fault state is an accidental fault and is repaired by heating.
In some embodiments, referring to fig. 7, the method further comprises:
s27: and prompting the destructive fault.
Work as the air door motor breaks down, can not be through when heating is restoreed, then right the suggestion is made to the destructiveness trouble to make things convenient for the user to know the air door motor and break down, and in time the maintenance, can also improve maintenance efficiency. It is understood that the prompt may be a voice prompt, a display pattern or a text prompt, etc.
In order to improve the accuracy of the detection, in some embodiments, referring to fig. 8, before the step of obtaining the temperature sequence of the refrigerator compartment within the preset time period, the method further includes:
s21: and (4) confirming whether the working state of the refrigerating device is normal working, and if so, executing step S22.
And S22, judging whether the refrigerating chamber door and the freezing chamber door are both closed, if so, executing the step S23.
In this embodiment, through confirming whether refrigerating plant's operating condition is normal work, if refrigerating plant normally works, judge again cold-stored room door with freezing room door is all closed, if cold-stored room door with freezing room door all closes, just acquires the temperature sequence of the refrigerating room in the same refrigeration cycle preset time period. Therefore, the temperature sequences are obtained under the condition that the refrigerating device normally works, and the interference of the refrigeration obstacle of the refrigerator can be eliminated. On this basis, when the refrigerating chamber door and the freezing chamber are both closed, the temperature sequence is acquired, and the influence of the external temperature of the refrigerator can be avoided.
It will be appreciated that in some embodiments, the refrigerator further comprises a temperature-varying chamber which can set an optimal storage temperature according to the food material to be refrigerated or frozen. The variable temperature chamber is communicated with a variable temperature evaporator chamber, a variable temperature evaporator is arranged in the variable temperature evaporator chamber and is communicated with the compressor, a variable temperature air door is arranged on a pipeline between the variable temperature evaporator chamber and the compressor, and the variable temperature air door is driven to be opened or closed by a variable temperature air door motor.
The method for detecting the state of the refrigerator air door motor can also be applied to a variable temperature air door motor, namely, in any embodiment of the method for detecting the state of the refrigerator air door motor, the refrigerating chamber is replaced by a variable temperature chamber, and the air door motor is replaced by the variable temperature air door motor. And acquiring a temperature sequence of the variable temperature chamber within a preset time period of the same refrigeration cycle, and determining the state of the variable temperature air door motor according to the temperature sequence. In this embodiment, the state of the variable temperature damper motor can be detected in real time.
One embodiment of the present invention also provides a non-transitory computer-readable storage medium storing computer-executable instructions for causing an electronic device to perform, for example, the methods of fig. 4-7 described above.
Embodiments of the present invention provide a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform a method of detecting a refrigerator damper motor condition in any of the above-described method embodiments, for example, to perform the method steps of fig. 4-7 described above.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a general hardware platform, and certainly can also be implemented by hardware. It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware related to instructions of a computer program, which can be stored in a computer readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for detecting the state of a motor of a damper of a refrigerator is characterized by comprising the following steps:
acquiring a temperature sequence of the refrigerating chamber in a preset time period of the same refrigerating cycle;
and determining the state of the air door motor according to the variation trend of the temperature in the temperature sequence, wherein the state comprises a fault state or a working state, the fault state comprises an opening fault or a closing fault, and the working state comprises normal opening or normal closing.
2. The method of claim 2, wherein the temperature sequence comprises a first temperature sequence, and wherein obtaining the temperature sequence of the cold room within a predetermined time period of the same refrigeration cycle comprises:
the method comprises the steps of obtaining a first temperature sequence of a refrigerating chamber in a first preset time period, wherein the refrigerating chamber is in a refrigerating state in the first preset time period.
3. The method of claim 2, wherein determining the state of the damper motor based on the trend of the temperature in the temperature sequence comprises:
and if the temperature in the first temperature sequence is in gradient decreasing, determining that the state of the air door motor is normally opened, otherwise, determining that the state of the air door motor is in an opening fault.
4. The method of claim 3, wherein the temperature sequence further comprises a second temperature sequence, and wherein obtaining the temperature sequence of the cold room for a predetermined period of time during the same refrigeration cycle further comprises:
and acquiring a second temperature sequence of the refrigerating chamber in a second preset time period, wherein the refrigerating chamber is in an uncooled state in the second preset time period.
5. The method of claim 4, wherein determining the state of the damper motor based on the trend of the temperature in the temperature sequence further comprises:
and if the temperature in the second temperature sequence is increased in a gradient mode, determining that the state of the air door motor is normally closed, otherwise, determining that the state of the air door motor is a closed fault.
6. The method of any one of claims 3-5, wherein the refrigerator includes a heater, the method further comprising:
when detecting for the first time the state of air door motor is fault state, control the refrigerating plant stop work of refrigerator, and control the heater is right air door motor heating third is preset for a long time.
7. The method of claim 6, further comprising:
and detecting the state of the air door motor again, if the state of the air door motor is still in a fault state, determining that the fault state is a destructive fault, and otherwise, determining that the fault state is an accidental fault.
8. The method according to any one of claims 1 to 5, wherein before the step of obtaining the temperature sequence of the refrigerated compartment within a preset time period, further comprising:
confirming whether the working state of the refrigerating device is normal work or not;
if yes, judging whether the refrigerating chamber door and the freezing chamber door are both closed;
if yes, executing the step of acquiring the temperature sequence of the refrigerating chamber in the preset time period.
9. A refrigerator, characterized by comprising:
the refrigerator comprises a refrigerator main body, a refrigerating chamber, a freezing chamber, a temperature measuring device and a refrigerating device, wherein the refrigerating device is used for refrigerating the refrigerating chamber and the freezing chamber, the temperature measuring device is used for detecting the temperature of the refrigerating chamber, the refrigerating device comprises a compressor, a refrigerating chamber evaporator and a freezing chamber evaporator, and an air door is arranged on a pipeline between the compressor and the refrigerating chamber evaporator;
the air door motor is used for driving the opening and closing of the air door;
the heater is used for heating the air door motor;
the controller is respectively connected with the refrigerator main body, the air door motor and the heater;
the controller includes:
at least one processor, and
a memory communicatively coupled to the at least one processor, wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-8.
10. A non-transitory computer-readable storage medium having stored thereon computer-executable instructions for causing an electronic device to perform the method of any one of claims 1-8.
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| CN202011041907.4A CN112503846A (en) | 2020-09-28 | 2020-09-28 | Method for detecting state of refrigerator air door motor, refrigerator and storage medium |
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