CN111623579B

CN111623579B - Electric valve monitoring method and device for refrigerator and refrigerator

Info

Publication number: CN111623579B
Application number: CN202010397645.9A
Authority: CN
Inventors: 宿建光; 孙彬; 刘洋; 黄海峰; 王凌翔; 宋锋毅
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2022-04-19
Anticipated expiration: 2040-05-12
Also published as: CN111623579A

Abstract

The application provides a method and a device for monitoring an electric valve of a refrigerator and the refrigerator, and belongs to the technical field of electric valve monitoring of the refrigerator. The method comprises the following steps: at a first time point of controlling the electric valve to open a target refrigeration passage, acquiring the temperature of a refrigerator compartment corresponding to the target refrigeration passage to obtain a first temperature and acquiring the ambient temperature around the refrigerator; at a second time point after the first time point, acquiring the temperature of the refrigerator compartment corresponding to the target refrigeration passage to obtain a second temperature; acquiring a first temperature difference value between the first temperature and the second temperature, and determining a temperature reduction threshold value of the target refrigeration passage at the ambient temperature; and determining whether the electric valve is abnormal or not according to the first temperature difference value and the cooling threshold value. The embodiment of the application can timely and accurately find the abnormal switching of the electric valve of the refrigerator, realize reliable monitoring, effectively guarantee the refrigeration performance of the refrigerator and improve user experience.

Description

Electric valve monitoring method and device for refrigerator and refrigerator

Technical Field

The application relates to the technical field of electric valve monitoring of refrigerators, in particular to a method and a device for monitoring an electric valve of a refrigerator and the refrigerator.

Background

In recent years, consumers have increasingly greater market demands for multi-path refrigeration system air-cooled refrigerators, and more electric valve products capable of controlling the on-off of a refrigeration system are introduced to realize the control of the multi-path refrigeration system.

At present, a multi-system air-cooled refrigerator adopting an electric valve mostly adopts a mode of regularly resetting the electric valve (for example, the electric valve is forcibly reset once every 300 min) to switch the on-off of each system. The mode of periodical reset is adopted to prevent the electric valve from being incapable of being switched normally due to electromagnetic interference, signal interruption, impurities and the like.

Therefore, a forced reset passive adjustment mode exists, and the switching abnormity of the electric valve cannot be found in time; the resetting and adjusting can not be carried out in time when the abnormal condition occurs; the situation that the refrigeration of the refrigerator is abnormal due to the fact that the single-path refrigeration system does not refrigerate caused by abnormal switching of the electric valve, the temperature rises back, and food stored in the refrigerator goes bad often, so that the user experience is influenced.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

An object of the embodiments of the present application is to provide a method and an apparatus for monitoring an electrically operated valve of a refrigerator, and a refrigerator, which can timely and accurately find that the electrically operated valve of the refrigerator is switched abnormally, thereby realizing reliable monitoring, effectively ensuring the refrigeration performance of the refrigerator, and improving user experience.

According to an embodiment of the application, an electric valve monitoring method for a refrigerator, wherein the refrigerator comprises an electric valve for switching to open a refrigeration passage, comprises the following steps: at a first time point of controlling the electric valve to open a target refrigeration passage, acquiring the temperature of a refrigerator compartment corresponding to the target refrigeration passage to obtain a first temperature and acquiring the ambient temperature around the refrigerator; at a second time point after the first time point, acquiring the temperature of the refrigerator compartment corresponding to the target refrigeration passage to obtain a second temperature; acquiring a first temperature difference value between the first temperature and the second temperature, and determining a temperature reduction threshold value of the target refrigeration passage at the ambient temperature; and determining whether the electric valve is abnormal or not according to the first temperature difference value and the cooling threshold value.

In some embodiments of the present application, the method further comprises: and when the electric valve is determined to be abnormal in switching, controlling the electric valve to complete resetting and switching again to open the target refrigeration passage.

In some embodiments of the present application, the method further comprises: at a fourth time point after the third time point of switching on the target refrigeration passage again, acquiring the temperature of the refrigerator compartment corresponding to the target refrigeration passage to obtain a third temperature; acquiring a second temperature difference value between the first temperature and the third temperature; and determining whether the electric valve is in failure or not according to the second temperature difference value and the cooling threshold value.

According to an embodiment of the present application, an electric valve monitoring apparatus for a refrigerator including an electric valve for switching a cooling path may include: the first acquisition module is used for acquiring the temperature of the refrigerator compartment corresponding to the target refrigeration passage at a first time point of controlling the electric valve to open the target refrigeration passage, acquiring a first temperature and acquiring the ambient temperature around the refrigerator; a second obtaining module, configured to obtain, at a second time point subsequent to the first time point, a temperature of the refrigerator compartment corresponding to the target refrigeration passage, so as to obtain a second temperature; the processing module is used for acquiring a first temperature difference value between the first temperature and the second temperature and determining a cooling threshold value of the target refrigeration passage at the ambient temperature; and the abnormity analysis module is used for determining whether the electric valve is abnormal or not according to the first temperature difference value and the cooling threshold value.

In some embodiments of the present application, the target refrigeration passage is a refrigeration passage, a freezing passage, or a temperature-varying passage, the refrigerator compartment corresponding to the refrigeration passage is a refrigerating compartment, the refrigerator compartment corresponding to the freezing passage is a freezing compartment, and the refrigerator compartment corresponding to the temperature-varying passage is a temperature-varying compartment;

the first acquisition module or the second acquisition module is configured to: when the target refrigerating passage is a refrigerating passage, acquiring the temperature of an evaporator corresponding to the refrigerating chamber; when the target refrigerating passage is a freezing passage, acquiring the temperature of an evaporator corresponding to the freezing chamber; and when the target refrigeration passage is a variable temperature passage, acquiring the temperature of the evaporator corresponding to the variable temperature chamber.

In some embodiments of the application, the processing module is configured to: obtaining a cooling threshold value determining table corresponding to the target refrigeration passage, wherein the cooling threshold value determining table comprises cooling threshold values corresponding to different environment temperature ranges; and according to the cooling threshold value determining table, determining a cooling threshold value corresponding to the environment temperature range where the environment temperature is located as the cooling threshold value of the target refrigeration passage at the environment temperature.

In some embodiments of the present application, the anomaly analysis module is configured to: when the first temperature difference value is larger than or equal to the cooling threshold value, determining that the electric valve is not abnormal in switching; and when the first temperature difference value is smaller than the cooling threshold value, determining that the electric valve is switched abnormally.

In some embodiments of the present application, the interval between the first time point and the second time point is 5 minutes and a set error range.

In some embodiments of the present application, the apparatus further comprises a reset module configured to: and when the electric valve is determined to be abnormal in switching, controlling the electric valve to complete resetting and switching again to open the target refrigeration passage.

In some embodiments of the present application, the apparatus further comprises a fault monitoring module configured to: at a fourth time point after the third time point of switching on the target refrigeration passage again, acquiring the temperature of the refrigerator compartment corresponding to the target refrigeration passage to obtain a third temperature; acquiring a second temperature difference value between the first temperature and the third temperature; and determining whether the electric valve is in failure or not according to the second temperature difference value and the cooling threshold value.

In some embodiments of the present application, the fault monitoring module is configured to: when the second temperature difference value is larger than or equal to the cooling threshold value, determining that the electric valve is switched to be normal; and when the second temperature difference value is smaller than the cooling threshold value, determining that the electric valve is switched to have a fault.

According to another embodiment of the present application, a refrigerator may include: a memory storing computer readable instructions; a processor reading computer readable instructions stored by the memory to perform the method as described above.

According to another embodiment of the present application, a computer program medium having computer readable instructions stored thereon, which, when executed by a processor of a computer, cause the computer to perform the method as described above.

According to the embodiment of the application, the first temperature of the refrigerator chamber can be collected through the first time point, the second temperature of the refrigerator chamber can be collected through the second time point, then, the first temperature difference value of the first temperature and the second temperature is calculated, and the temperature change of the corresponding refrigerator chamber before and after the electric valve is switched to open the target refrigeration passage can be actively monitored. The method comprises the steps of obtaining the ambient temperature around the refrigerator at a first time point, determining the cooling threshold of a target refrigerating passage at the ambient temperature, and determining the cooling threshold of the refrigerator compartment corresponding to the target refrigerating passage, which meets the cooling performance at the ambient temperature, according to the influence of the ambient temperature around the refrigerator on the temperature regulation of the target refrigerating passage. And finally, according to the comparison between the first temperature difference value and the temperature reduction threshold value, determining whether the target refrigeration passage switched by the electric valve in the refrigerator is abnormal, namely whether the standard of the temperature reduction threshold value at the ambient temperature is met.

Through the refrigeration effect that target refrigeration passes through under the different ambient temperature of initiative control, can in time discover that the motorised valve switches whether unusual, realize switching unusual reliable control to the motorised valve, effectively guarantee the refrigeration performance of refrigerator, promote user experience.

Other features and advantages of the present application will be apparent from the following detailed description, taken in conjunction with the accompanying drawings, or may be learned by practice of the application.

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

FIG. 1 shows a schematic diagram of a system to which embodiments of the present application may be applied.

Fig. 2 illustrates a flowchart of an electric valve monitoring method of a refrigerator according to an embodiment of the present application.

Fig. 3 illustrates a flowchart of an electric valve monitoring method of a refrigerator according to still another embodiment of the present application.

Fig. 4 shows a block diagram of an electric valve monitoring apparatus of a refrigerator according to an embodiment of the present application.

Fig. 5 illustrates a block diagram of a refrigerator according to an embodiment of the present application.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject matter of the present application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.

The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.

The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.

FIG. 1 shows a schematic diagram of a system 100 to which embodiments of the present application may be applied.

As shown in fig. 1, the system 100 may include an electric valve monitoring device 101 of a refrigerator, and a temperature sensor 102, a temperature sensor 103, and a temperature sensor 104 connected to the electric valve monitoring device 101.

The electric valve monitoring device 101 of the refrigerator may be any device having program instruction execution and data processing capabilities, and may be, for example, a display control panel of the refrigerator.

The temperature sensor 102, the temperature sensor 103 and the temperature sensor 104 may be disposed at the relevant positions of the refrigerator compartment (which may include a refrigerating compartment, a freezing compartment and a temperature changing compartment) of the refrigerator, and are used for collecting the temperature of the refrigerator compartment. In the present exemplary embodiment, the temperature sensor 102, the temperature sensor 103, and the temperature sensor 104 are respectively disposed on the evaporator (which may include a refrigeration evaporator, a freezing evaporator, and a temperature-changing evaporator) pipelines corresponding to the refrigerator compartment (which may include a refrigerating compartment, a freezing compartment, and a temperature-changing compartment), and may perform temperature collection at the most temperature-sensitive position.

The refrigeration evaporator can be a refrigeration fin evaporator, the freezing evaporator can be a freezing fin evaporator, and the temperature-changing evaporator can be a temperature-changing fin evaporator. The temperature sensor 102, the temperature sensor 103 and the temperature sensor 104 may be a refrigeration evaporator defrosting sensor, a freezing evaporator defrosting sensor and a variable temperature evaporator defrosting sensor, respectively.

It should be understood that the number of electric valve monitoring devices, temperature sensors of the refrigerator in fig. 1 is merely illustrative. There may be any number of electrically operated valve monitoring devices, temperature sensors of the refrigerator, as desired for implementation. For example, when 5 cooling paths are provided, 1 temperature sensor is provided for each cooling path or refrigerator compartment, and 5 temperature sensors are provided in total.

In an embodiment of the present application, the electric valve monitoring device 101 of the refrigerator may obtain a temperature of a compartment of the refrigerator corresponding to a target refrigeration passage at a first time point when an electric valve in the refrigerator is controlled to open the target refrigeration passage, obtain a first temperature, and obtain an ambient temperature around the refrigerator; at a second time point after the first time point, acquiring the temperature of the refrigerator compartment corresponding to the target refrigeration passage to obtain a second temperature; acquiring a first temperature difference value between the first temperature and the second temperature, and determining a temperature reduction threshold value of the target refrigeration passage at the ambient temperature; and determining whether the electric valve is abnormal or not according to the first temperature difference value and the cooling threshold value.

In the related art, the electric valve control mode is a passive mode, that is, a mode of periodically resetting the electric valve is adopted to prevent the electric valve from being incapable of being normally switched due to electromagnetic interference, signal interruption, impurities and the like. If the forced reset interval is long, the switching fault of the movable valve cannot be found in time to reset in time; if the forced reset interval is short, the reset noise is high, and frequent reset can influence the use experience of a user and reduce the quality of the refrigerator; meanwhile, effective alarm cannot be provided for serious faults that resetting cannot be normally switched, so that the refrigerator cannot be maintained in time, and user experience is influenced.

Fig. 2 schematically shows a flowchart of an electric valve monitoring method of a refrigerator according to one embodiment of the present application. The main body of execution of the electric valve monitoring method of the refrigerator may be an electronic device having a calculation processing function, such as the electric valve monitoring apparatus 101 of the refrigerator shown in fig. 1. The refrigerator includes an electric valve for switching to open a cooling path, and as shown in fig. 2, the electric valve monitoring method of the refrigerator may include steps S210 to S240.

Step S210, at a first time point of controlling the electric valve to open a target refrigeration passage, acquiring the temperature of a refrigerator compartment corresponding to the target refrigeration passage to obtain a first temperature and acquiring the ambient temperature around the refrigerator;

step S220, at a second time point after the first time point, obtaining the temperature of the refrigerator compartment corresponding to the target refrigeration passage to obtain a second temperature;

step S230, obtaining a first temperature difference between the first temperature and the second temperature, and determining a temperature reduction threshold of the target refrigeration passage at the ambient temperature;

step S240, determining whether the electric valve switching is abnormal according to the first temperature difference and the cooling threshold.

The following describes a specific process of each step performed when the electric valve of the refrigerator is monitored.

In step S210, at a first time point when the electric valve is controlled to open the target refrigeration passage, the temperature of the compartment of the refrigerator corresponding to the target refrigeration passage is obtained, a first temperature is obtained, and the ambient temperature around the refrigerator is obtained.

In the embodiment of the present example, the electric valve includes an inlet and three outlets, the inlet is communicated with the condenser through the dew-removing pipe, and the three outlets are respectively connected with the evaporators (which may include a refrigeration fin evaporator, a freezing fin evaporator, and a temperature-changing fin evaporator) corresponding to each refrigerator compartment, so as to form three refrigeration paths. It will be understood that the number of outlets of the electric valve may be set according to the requirement, and for example, 2 or 4 outlets may be included, and a corresponding number of cooling passages are formed in the refrigerator.

The electric valve can open a target refrigeration passage through the switching valve core, and then the temperature of the refrigerator compartment corresponding to the target refrigeration passage is adjusted through the evaporator corresponding to the target refrigeration passage.

The first time point is a time point at which the electric valve is controlled to open the target refrigeration passage, and may be a time point at which an instruction to open the target refrigeration passage is received. The first temperature is obtained at the first time point, and the temperature of the refrigerator compartment corresponding to the target refrigeration passage before the electric valve is switched can be collected and monitored.

The temperature of the refrigerator compartment corresponding to the target refrigeration passage is obtained by acquiring through a temperature sensor arranged in the refrigerator compartment corresponding to the target refrigeration passage.

The ambient temperature around the refrigerator has a certain influence on the refrigeration effect of the evaporator, and has an influence on the cooling difference (the difference between the temperature at the beginning of cooling and the temperature after cooling for a certain time) of the refrigerator compartment. For example, the higher the ambient temperature of the refrigerator, the lower the temperature difference between the refrigerator compartments will be relatively reduced, and the different refrigerator compartments will have different effects. By collecting the ambient temperature around the refrigerator at the first time point, whether the refrigeration effect (reduced temperature value) of the refrigerator compartment temperature corresponding to the target refrigeration passage within a certain time period is matched with the influence brought by the ambient temperature after the target refrigeration passage is opened at the ambient temperature can be analyzed, and whether the refrigeration effect is abnormal or not is ensured.

The ambient temperature around the refrigerator may be obtained by a temperature sensor arranged around the refrigerator (for example, arranged on the refrigerator door or in a hinge box at the top of the refrigerator).

In one embodiment, when the temperature of the refrigerator compartment corresponding to the target refrigeration passage reaches the starting temperature, the electric valve is controlled to open the target refrigeration passage.

The monitored temperature of the refrigerator compartment corresponding to the target refrigerating passage can be acquired by arranging a temperature control sensor of the refrigerator compartment.

In step S220, at a second time point after the first time point, the temperature of the refrigerator compartment corresponding to the target refrigeration passage is obtained, so as to obtain a second temperature.

In the embodiment of the present example, the interval between the first time point and the second time point may be set according to requirements, for example, the interval is 5min or 6 min.

And acquiring a second temperature of the refrigerator compartment corresponding to the target refrigeration passage at a second moment, comparing the second temperature with the first temperature, determining a specific temperature difference value of the temperature reduction of the refrigerator compartment, and judging whether the refrigeration effect is abnormal after the refrigeration passage is switched on.

In one embodiment, the target refrigeration passage is a refrigeration passage, a freezing passage or a temperature change passage, the refrigerator compartment corresponding to the refrigeration passage is a refrigerating compartment, the refrigerator compartment corresponding to the freezing passage is a freezing compartment, and the refrigerator compartment corresponding to the temperature change passage is a temperature change compartment;

the acquiring the temperature of the refrigerator compartment corresponding to the target refrigeration passage comprises the following steps:

when the target refrigerating passage is a refrigerating passage, acquiring the temperature of an evaporator corresponding to the refrigerating chamber;

when the target refrigerating passage is a freezing passage, acquiring the temperature of an evaporator corresponding to the freezing chamber;

and when the target refrigeration passage is a variable temperature passage, acquiring the temperature of the evaporator corresponding to the variable temperature chamber.

The evaporator can comprise a refrigeration fin evaporator, a freezing fin evaporator and a variable temperature fin evaporator which are respectively arranged on the refrigeration passage, the freezing passage and the variable temperature passage and respectively adjust the temperature of the refrigeration chamber, the freezing chamber and the variable temperature chamber.

The temperature of the corresponding evaporator can be acquired by the defrosting sensors on the pipelines of the refrigeration fin evaporator, the freezing fin evaporator and the variable temperature fin evaporator respectively.

By acquiring the temperature of the evaporator corresponding to the refrigerator compartment (including the refrigerating chamber, the freezing chamber and the temperature-changing chamber), the temperature change on the evaporator is the most sensitive position, and the accuracy of monitoring the refrigerating effect can be ensured.

In step S230, a first temperature difference between the first temperature and the second temperature is obtained, and a temperature drop threshold of the target refrigeration path at the ambient temperature is determined.

In the embodiment of the present example, the first temperature difference between the first temperature and the second temperature may be obtained by subtracting the second temperature from the first temperature.

The first temperature difference is a temperature change value of the refrigerator compartment corresponding to the target refrigerating passage after the target refrigerating passage is opened, and reflects the refrigerating effect of the passage.

The temperature reduction threshold is a standard threshold for reducing the temperature of the refrigerator compartment corresponding to the target refrigeration passage in an interval from a first time point to a second time point at different preset environmental temperatures. By acquiring the cooling threshold value, the influence of the ambient temperature around the refrigerator on the refrigeration effect can be considered, and the reliability of the refrigeration effect monitoring analysis is ensured.

The temperature reduction threshold of the target refrigeration passage at the ambient temperature is determined, and the temperature reduction threshold associated with the ambient temperature and the identifier of the target refrigeration passage can be searched in a preset temperature reduction threshold determination table.

In one embodiment, determining a pull-down threshold for the target refrigeration path at the ambient temperature comprises:

obtaining a cooling threshold value determining table corresponding to the target refrigeration passage, wherein the cooling threshold value determining table comprises cooling threshold values corresponding to different environment temperature ranges;

and according to the cooling threshold value determining table, determining a cooling threshold value corresponding to the environment temperature range where the environment temperature is located as the cooling threshold value of the target refrigeration passage at the environment temperature.

The cooling threshold determination table corresponding to the target cooling passage may be set in advance, and may include a first cooling threshold determination table corresponding to the refrigerating cooling passage shown in the following table:

range of ambient temperature	Temperature drop threshold Δ TR (Ta)
		TR≤15℃	15℃
15℃＜TR≤25℃	12℃
		25℃＜TR≤38℃	10℃
TR＞38℃	8℃

A second temperature drop threshold determination table corresponding to the freezing and refrigerating passage as shown in the following table:

range of ambient temperature	Temperature drop threshold value delta TF (Ta)
		TR≤15℃	3℃
15℃＜TR≤25℃	2℃
		25℃＜TR≤38℃	1℃
TR＞38℃	0.5℃

A third drop temperature threshold determination table corresponding to the temperature swing refrigeration path as shown in the following table:

range of ambient temperature	Temperature drop threshold value DeltaTV (Ta)
		TR≤15℃	8℃
15℃＜TR≤25℃	6℃
		25℃＜TR≤38℃	4℃
TR＞38℃	2℃

Each cooling threshold value determining table comprises cooling threshold values corresponding to different environment temperature ranges, and the cooling threshold values corresponding to different refrigeration passages in the same environment temperature range are different, because the influence of the environment temperature on the refrigeration effects of the different refrigeration passages is different.

The ambient temperature range of the ambient temperature in the corresponding cooling threshold value table can be determined, and then the cooling threshold value corresponding to the ambient temperature range is determined.

In step S240, it is determined whether the electric valve switching is abnormal according to the first temperature difference and the cooling threshold.

In the embodiment of this example, comparing the first temperature difference with the cooling threshold value can determine whether the first temperature difference, which is decreased by the temperature of the refrigerator compartment corresponding to the target refrigeration path, at the acquired ambient temperature within the interval from the first time point to the second time point, meets the cooling threshold value standard at the ambient temperature. If the temperature drop threshold value standard is not met, the situation that the electric valve of the refrigerator is abnormal when the target refrigeration passage is switched on is shown, so that the refrigeration effect does not reach the standard.

The sample application can timely and accurately find the abnormal switching of the electric valve of the refrigerator, and realize reliable monitoring; effectively promote the refrigeration performance of refrigerator, promote user experience.

In one embodiment, the interval between the first time point and the second time point is 5 minutes and a set error range.

The 5 minutes and the set error range can be 5min +/-the set error range 30S and the like, and the interval setting in practical experience can optimize the monitoring and analyzing frequency under the condition that the abnormality is found in time.

In one embodiment, referring to fig. 3, after determining whether the electric valve switching is abnormal according to the magnitude of the temperature difference and the cooling threshold, the method further includes:

and step S310, when the electric valve is determined to be abnormally switched, controlling the electric valve to complete resetting and switching and opening the target refrigeration passage again.

When the electric valve is determined to be switched abnormally, namely the refrigeration effect of the target refrigeration passage is abnormal, the electric valve is controlled to complete reset and switch the target refrigeration passage again, the reset can be carried out in time, and the temperature adjustment of the target refrigeration passage corresponding to the refrigerator compartment is carried out again. Further, the refrigerating performance of the refrigerator is effectively guaranteed. Because the reset noise is higher, the reset adjustment is only carried out when the abnormity is found, the influence on the use experience of a user and the quality and quality of the refrigerator caused by frequent reset is avoided.

In one embodiment, as shown in fig. 3, the method further includes:

step S320, obtaining the temperature of the refrigerator compartment corresponding to the target refrigerating passage at a fourth time point after the third time point of switching on the target refrigerating passage again to obtain a third temperature;

step S330, acquiring a second temperature difference value between the first temperature and the third temperature;

step S340, determining whether there is a fault in the electric valve switching according to the second temperature difference and the cooling threshold.

And after the target refrigeration passage is switched to be opened again, acquiring a third temperature of the refrigerator compartment corresponding to the target refrigeration passage at a fourth time point, and then acquiring a second temperature difference value between the first temperature and the third temperature. And judging whether the refrigerating effect of the target refrigerating passage reaches the standard or not by comparing the second temperature difference value with the cooling threshold value.

And if the standard reaching shows that the refrigeration is abnormally recovered due to the electric valve switching again after the resetting, the electric valve switching is recovered to be normal. If the refrigeration effect does not reach the standard after the resetting is carried out again, the situation that the electric valve is switched to have a fault is indicated, and the resetting can not be recovered to be normal.

In one embodiment, the interval between the third time point and the fourth time point is also 5 minutes and the set error range.

In one embodiment, the determining whether the electric valve switching has a fault according to the second temperature difference and the magnitude of the temperature reduction threshold includes:

when the second temperature difference value is larger than or equal to the cooling threshold value, determining that the electric valve is switched to be normal;

and when the second temperature difference value is smaller than the cooling threshold value, determining that the electric valve is switched to have a fault.

When the second temperature difference value is larger than or equal to the cooling threshold value, the cooling reaches the standard, the refrigeration effect of the target refrigeration passage is recovered to be normal after reset switching, and the electric valve switching is recovered to be normal. On the contrary, when the second temperature difference is smaller than the temperature reduction threshold, the temperature reduction is not up to the standard, and the refrigeration effect of the target refrigeration passage after the reset switching can not be recovered to be normal, so that the electric valve switching has a fault.

In one embodiment, when the second temperature difference is smaller than the temperature drop threshold, after determining that the electric valve switching has a fault, the method further includes:

and sending alarm information that the electric valve is switched to have a fault to a user.

The mode that can show alarm information or voice broadcast through the refrigerator display screen etc. reports to the police, informs the user that motorised valve trouble is in time maintained, reduces the refrigerator fault rate, improves user and uses experience.

As shown in fig. 4, the electric valve monitoring apparatus 400 of the refrigerator may include a first obtaining module 410, a second obtaining module 420, a processing module 430 and an abnormality analyzing module 440.

The first obtaining module 410 may be configured to obtain a temperature of a refrigerator compartment corresponding to a target refrigeration passage at a first time point when the electric valve is controlled to open the target refrigeration passage, obtain a first temperature, and obtain an ambient temperature around the refrigerator; the second obtaining module 420 may be configured to obtain, at a second time point after the first time point, a temperature of the refrigerator compartment corresponding to the target refrigeration passage, so as to obtain a second temperature; the processing module 430 may be configured to obtain a first temperature difference between the first temperature and the second temperature, and determine a temperature drop threshold of the target refrigeration path at the ambient temperature; the anomaly analysis module 440 may be configured to determine whether the electric valve switching is abnormal according to the first temperature difference and the cooling threshold.

It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the application. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.

Fig. 5 schematically illustrates a block diagram of a refrigerator according to an embodiment of the present application.

It should be noted that the refrigerator 200 shown in fig. 5 is only an example, and should not bring any limitation to the functions and the application range of the embodiment of the present application.

As shown in FIG. 5, the refrigerator 200 includes an electronic device 500 (which may be, for example, a display control panel of the refrigerator)

A Central Processing Unit (CPU)501 is included, which can perform various appropriate actions and processes in accordance with a program stored in a Read Only Memory (ROM)502 or a program loaded from a storage section 508 into a Random Access Memory (RAM) 503. In the RAM 503, various programs and data necessary for system operation are also stored. The CPU 501, ROM 502, and RAM 503 are connected to each other via a bus 504. An input/output (I/O) interface 505 is also connected to bus 504.

The following components are connected to the I/O interface 505: an input portion 506 including a keyboard, a mouse, and the like; an output portion 507 including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage portion 508 including a hard disk and the like; and a communication section 509 including a network interface card such as a LAN (local area network) card, a modem, or the like. The communication section 509 performs communication processing via a network such as the internet. The driver 510 is also connected to the I/O interface 505 as necessary. A removable medium 511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 510 as necessary, so that a computer program read out therefrom is mounted into the storage section 508 as necessary.

In particular, according to embodiments of the present application, the processes described below with reference to the flowcharts may be implemented as computer software programs. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method illustrated by the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 509, and/or installed from the removable medium 511. The computer program executes various functions defined in the system of the present application when executed by a Central Processing Unit (CPU) 501.

It should be noted that the computer readable medium shown in the present application may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present application, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In this application, however, a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF (radio frequency), etc., or any suitable combination of the foregoing.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. 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). It should also be noted that, 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. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams 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.

The units described in the embodiments of the present application may be implemented by software, or may be implemented by hardware, and the described units may also be disposed in a processor. Wherein the names of the elements do not in some way constitute a limitation on the elements themselves.

As another aspect, the present application also provides a computer-readable medium, which may be included in the refrigerator described in the above embodiments; or may be separate and not assembled into the refrigerator. The computer readable medium carries one or more programs which, when executed by an electronic device, cause the electronic device to implement the method described in the above embodiments.

Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiments of the present application.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains.

It will be understood that the present application is not limited to the embodiments that have been described above and shown in the drawings, but that various modifications and changes can be made without departing from the scope thereof.

Claims

1. The electric valve monitoring method of the refrigerator is characterized in that the refrigerator comprises an electric valve for switching and opening a refrigeration passage, the electric valve comprises an inlet and three outlets, the inlet is communicated with a condenser through a dew removing pipe, the three outlets are respectively connected with evaporators corresponding to refrigerator compartments to form three refrigeration passages, and the method comprises the following steps:

at a first time point of controlling the electric valve to open a target refrigeration passage, acquiring the temperature of a refrigerator compartment corresponding to the target refrigeration passage to obtain a first temperature and acquiring the ambient temperature around the refrigerator;

at a second time point after the first time point, acquiring the temperature of the refrigerator compartment corresponding to the target refrigeration passage to obtain a second temperature;

acquiring a first temperature difference value between the first temperature and the second temperature, and determining a temperature reduction threshold value of the target refrigeration passage at the ambient temperature;

determining whether the electric valve is abnormal or not according to the first temperature difference value and the cooling threshold value;

the temperature reduction threshold is a standard threshold of temperature reduction of the refrigerator compartment corresponding to the target refrigeration passage in an interval from a first time point to a second time point at different preset environmental temperatures;

after determining whether the electric valve switching is abnormal according to the temperature difference value and the cooling threshold value, the method further comprises the following steps:

when the situation that the electric valve is abnormal in switching is determined, controlling the electric valve to complete resetting and switching again to open the target refrigeration passage;

at a fourth time point after the third time point of switching on the target refrigeration passage again, acquiring the temperature of the refrigerator compartment corresponding to the target refrigeration passage to obtain a third temperature;

acquiring a second temperature difference value between the first temperature and the third temperature;

2. The method of claim 1, wherein the target refrigeration passage is a refrigeration passage, a freezing passage or a temperature change passage, the refrigerator compartment corresponding to the refrigeration passage is a refrigerating compartment, the refrigerator compartment corresponding to the freezing passage is a freezing compartment, and the refrigerator compartment corresponding to the temperature change passage is a temperature change compartment;

3. The method of claim 1, wherein the determining a pull-down threshold for the target refrigeration path at the ambient temperature comprises:

4. The method of claim 1, wherein said determining whether the electric valve switching is abnormal according to the magnitude of the first temperature difference value and the cooling threshold value comprises:

when the first temperature difference value is larger than or equal to the cooling threshold value, determining that the electric valve is not abnormal in switching;

and when the first temperature difference value is smaller than the cooling threshold value, determining that the electric valve is switched abnormally.

5. The method of claim 1, wherein the first time point and the second time point are separated by 5 minutes and a set error range.

6. The utility model provides an motorised valve monitoring device of refrigerator, its characterized in that contains the motorised valve that is used for switching to open the refrigeration route in the refrigerator, the motorised valve includes an import three export, the import is through removing dew pipe and condenser intercommunication, three export with correspond to the evaporimeter in each refrigerator compartment respectively and be connected, form three routes refrigeration route, the device includes:

the first acquisition module is used for acquiring the temperature of the refrigerator compartment corresponding to the target refrigeration passage at a first time point of controlling the electric valve to open the target refrigeration passage, acquiring a first temperature and acquiring the ambient temperature around the refrigerator;

a second obtaining module, configured to obtain, at a second time point subsequent to the first time point, a temperature of the refrigerator compartment corresponding to the target refrigeration passage, so as to obtain a second temperature;

the processing module is used for acquiring a first temperature difference value between the first temperature and the second temperature and determining a cooling threshold value of the target refrigeration passage at the ambient temperature;

the abnormity analysis module is used for determining whether the electric valve is abnormal or not according to the first temperature difference value and the cooling threshold value;

the apparatus further comprises a reset module configured to: when the situation that the electric valve is abnormal in switching is determined, controlling the electric valve to complete resetting and switching again to open the target refrigeration passage;

the apparatus also includes a fault monitoring module configured to: at a fourth time point after the third time point of switching on the target refrigeration passage again, acquiring the temperature of the refrigerator compartment corresponding to the target refrigeration passage to obtain a third temperature; acquiring a second temperature difference value between the first temperature and the third temperature; determining whether the electric valve is in failure or not according to the second temperature difference value and the cooling threshold value;

the fault monitoring module is configured to: when the second temperature difference value is larger than or equal to the cooling threshold value, determining that the electric valve is switched to be normal; and when the second temperature difference value is smaller than the cooling threshold value, determining that the electric valve is switched to have a fault.

7. A refrigerator, characterized by comprising: a memory storing computer readable instructions; a processor reading computer readable instructions stored by the memory to perform the method of any of claims 1-5.