Refrigerator air duct control system, method and device, refrigerator, equipment and storage medium

Abstract

The invention relates to a refrigerator air duct control system, method and device, a refrigerator, equipment and a storage medium. The method comprises the steps that refrigerator environment parameters and user behavior data corresponding to a preset refrigerator are detected; according to the refrigerator environment parameters corresponding to the refrigerator and the user behavior data, a frosting index corresponding to the refrigerator is determined; and according to the frosting index, a preset air door assembly is controlled to adjust the communicating position, so that an air return duct of the refrigerator is switched between communicating of an evaporator cavity and communicating of a compressor bin. According to the air duct system, the double-air-path structure is adopted, the air return duct can be communicated with the evaporator cavity or the compressor bin according to the frosting index, when the air return duct is communicated with the compressor bin, external air rushing into the refrigerating chamber can be guided to the compressor bin, and therefore the condenser and the compressor in the compressor bin can be cooled, and the refrigerating efficiency can be improved. The energy consumption of the system is reduced, damp and hot air can be prevented from entering the evaporator cavity, and the frosting probability of the evaporator is effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of device control technology, and in particular to a refrigerator air duct control system, method, device, refrigerator, device and storage medium. Background Art

[0002] The air duct system of a single-system air-cooled refrigerator is a key structure for directing air flow and achieving uniform cooling within the refrigerator. The evaporator is located in the evaporator chamber, while the condenser and compressor are located in the compressor compartment. The air duct system consists of a supply duct and a return duct. The supply duct connects the evaporator chamber and the refrigerator compartment. Its inlet connects to the evaporator chamber, while its outlet connects to the refrigerator compartment. This allows cold air from the evaporator chamber to enter the refrigerator compartment through the supply duct, exchanging heat with the warm air in the refrigerator compartment, thereby lowering the refrigerator compartment's temperature. To create air circulation within the duct system, a return duct also connects the evaporator chamber and the refrigerator compartment. Its inlet connects to the refrigerator compartment, while its outlet (also known as the return air outlet) connects to the evaporator chamber. The hot and humid air in the refrigerator compartment enters the evaporator chamber through the return duct. Due to the lower temperature within the evaporator chamber, the hot and humid air is cooled by the evaporator chamber before re-entering the refrigerator compartment through the supply duct, thus cooling the refrigerator compartment.

[0003] However, the air duct system of the existing single-system air-cooled refrigerator has a fixed air path. When the door of the refrigerated compartment is opened for a long time, hot and humid air from the outside can easily enter the evaporator cavity from the refrigerated compartment through the air duct system, forming a large amount of frost on the evaporator surface, resulting in a decrease in the refrigerator's cooling efficiency and even causing evaporator frost blockage, resulting in refrigerator malfunction. Summary of the Invention

[0004] The present application provides a refrigerator air duct control system, method, device, refrigerator, equipment and storage medium to solve the problem that the air duct system of the existing single-system air-cooled refrigerator has a fixed air path. When the door of the refrigerated compartment is open for a long time, the hot and humid air from the outside can easily pass through the air duct system from the refrigerated compartment into the evaporator cavity, causing a large amount of frost to form on the evaporator surface.

[0005] In order to solve the above technical problems, the technical solution of this application is solved through the following embodiments:

[0006] An embodiment of the present application provides a refrigerator air duct control system, comprising: a damper assembly and a controller for controlling the damper assembly; the damper assembly is arranged in the return air duct of a preset refrigerator; wherein one end of the return air duct is connected to the refrigerated compartment of the refrigerator; the damper assembly adjusts the connection position under the control of the controller so that the other end of the return air duct switches between connecting to the evaporator chamber and connecting to the compressor compartment.

[0007] wherein, the damper assembly includes: a partition and a driver for driving the partition; the partition is movably arranged at the return air outlet of the return air duct; wherein, the return air outlet of the return air duct is used to connect the return air duct and the evaporator chamber; the end port of the return air duct is used to connect the return air duct and the compressor compartment; the driver drives the partition to move under the control of the controller; the partition is driven by the driver to move to a first connecting position so as to open the return air outlet and close the end port of the return air duct, so that the other end of the return air duct is connected to the evaporator chamber; or, driven by the driver, is moved to a second connecting position so as to close the return air outlet and open the end port of the return air duct, so that the return air duct is connected to the compressor compartment.

[0008] An embodiment of the present application also provides a refrigerator air duct control method, which is applied to the controller described in any of the above items, including: detecting refrigerator environmental parameters and user behavior data corresponding to a preset refrigerator; determining a frost index corresponding to the refrigerator based on the refrigerator environmental parameters and user behavior data corresponding to the refrigerator; and controlling a preset damper assembly to adjust the connection position based on the frost index so that the return air duct of the refrigerator switches between connecting to the evaporator chamber and connecting to the compressor compartment.

[0009] Among them, the detecting of refrigerator environmental parameters and user behavior data corresponding to a preset refrigerator includes: detecting the temperature and humidity of the refrigerator's refrigeration compartment, the temperature and humidity of the refrigerator's freezer compartment, and the temperature and humidity of the environment in which the refrigerator is located within a preset detection time period, as the refrigerator environmental parameters corresponding to the refrigerator; detecting the length of time the refrigerator's refrigeration compartment door is open and the length of time the freezer compartment door is open within the detection time period, as the user behavior data corresponding to the refrigerator.

[0010] Wherein, determining the frost index corresponding to the refrigerator according to the refrigerator environmental parameters corresponding to the refrigerator and the user behavior data includes: using the following formula to determine the frost index corresponding to the refrigerator: M = (a*(T3-T1)*(H3-H1)*t1+b*(T3-T2)*(H3-H2)*t2-c)*(1-d); wherein, M represents the frost index corresponding to the refrigerator; T1 represents the temperature of the refrigerator's refrigeration compartment; T2 represents the temperature of the refrigerator's freezer compartment; T3 represents the temperature of the environment in which the refrigerator is located; t1 represents the door opening time of the refrigerator's refrigeration compartment; t2 represents the door opening time of the refrigerator's freezer compartment; a is a preset refrigeration compartment return air frost coefficient; b is a preset freezer compartment return air frost coefficient; c is a preset evaporator frost threshold; d is a defrost frequency coefficient of the refrigerator's evaporator within a preset recording time period.

[0011] Wherein, before determining the frost index corresponding to the refrigerator based on the refrigerator environmental parameters corresponding to the refrigerator and the user behavior data, it also includes: querying the previous defrost completion time of the evaporator of the refrigerator; when the time difference between the defrost completion time and the current time is less than a preset time difference threshold, setting the defrost number coefficient to 1.

[0012] In which, the damper assembly includes: a partition and a driver for driving the partition; the damper assembly preset according to the frost index control adjusts the connection position, including: when the frost index range where the frost index is located indicates that the evaporator of the refrigerator is in a normal environment, controlling the driver to drive the partition to move to the first connection position so as to open the return air port and close the end port of the return air duct, so that the return air duct is connected to the evaporator cavity; when the frost index range where the frost index is located indicates that the evaporator of the refrigerator is in a frosted environment, controlling the driver to drive the partition to move to the second connection position so as to close the return air port and open the end port of the return air duct, so that the return air duct is connected to the compressor compartment.

[0013] An embodiment of the present application also provides a refrigerator air duct control device, which is used in the controller described in any of the above items, including: a detection module for detecting refrigerator environmental parameters and user behavior data corresponding to a preset refrigerator; a determination module for determining the frost index corresponding to the refrigerator based on the refrigerator environmental parameters and user behavior data corresponding to the refrigerator; and a control module for controlling the preset damper assembly to adjust the connection position according to the frost index so that the return air duct of the refrigerator switches between connecting to the evaporator chamber and connecting to the compressor compartment.

[0014] An embodiment of the present application also provides a single-system air-cooled refrigerator, comprising any of the refrigerator air duct control systems described above.

[0015] An embodiment of the present application also provides a refrigerator duct control device, comprising: at least one communication interface; at least one bus connected to the at least one communication interface; at least one processor connected to the at least one bus; and at least one memory connected to the at least one bus, wherein the processor is configured to: execute the refrigerator duct control program stored in the memory to implement any of the above-mentioned refrigerator duct control methods.

[0016] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are executed to implement any of the above-mentioned refrigerator air duct control methods.

[0017] The above technical solution provided by the embodiment of the present application has the following advantages over the prior art: the method provided by the embodiment of the present application can detect the refrigerator environmental parameters and user behavior data corresponding to the preset refrigerator; determine the frost index corresponding to the refrigerator based on the refrigerator environmental parameters and user behavior data corresponding to the refrigerator; control the preset damper assembly to adjust the connection position based on the frost index so that the return air duct of the refrigerator switches between connecting to the evaporator cavity and connecting to the compressor compartment. The air duct system of the embodiment of the present application adopts a dual air path structure. According to the frost index, the return air duct can be connected to the evaporator cavity or to the compressor compartment. When the return air duct is connected to the compressor compartment, the air flowing into the refrigerated compartment from the outside will be guided to the compressor compartment. In addition to cooling the condenser and compressor in the compressor compartment and reducing system energy consumption, this can also block hot and humid air from entering the evaporator cavity, effectively reducing the probability of frost on the evaporator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0021] Figure 1 is a structural diagram of a refrigerator air duct control system according to an embodiment of the present application;

[0022] Figure 2 is a specific structural diagram of a refrigerator air duct control system according to an embodiment of the present application;

[0023] Figure 3 is a flow chart of a refrigerator air duct control method according to an embodiment of the present application;

[0024] Figure 4 1 is a structural diagram of a refrigerator air duct control device according to an embodiment of the present application;

[0025] Figure 5 2 is a structural diagram of a refrigerator air duct control device according to an embodiment of the present application. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0027] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, these are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0028] The embodiment of the present application provides a refrigerator air duct control system. In the embodiment of the present application, the refrigerator can be a single-system air-cooled refrigerator. Figure 1 , which is a structural diagram of a refrigerator air duct control system according to an embodiment of the present application.

[0029] In an embodiment of the present application, the refrigerator air duct control system includes: a damper assembly 1 and a controller (not shown in the figure) for controlling the damper assembly 1.

[0030] The controller is connected to the damper assembly 1 so as to send a control signal to the damper assembly 1 .

[0031] The damper assembly 1 is arranged in the return air duct 2 of a preset refrigerator; wherein one end of the return air duct 2 is connected to the refrigeration compartment 3 of the refrigerator.

[0032] The damper assembly 1 adjusts the connection position under the control of the controller, so that the other end of the return air duct 2 switches between connecting to the evaporator chamber 4 and connecting to the compressor compartment 5. The evaporator chamber 4 is attached to the rear side of the freezer compartment 6.

[0033] Figure 2 2 is a specific structural diagram of a refrigerator air duct control system according to an embodiment of the present application.

[0034] In the embodiment of the present application, the damper assembly 1 may include: a partition 7 and a driver (not shown in the figure) for driving the partition.

[0035] Specifically, the partition 7 is movably arranged at the return air outlet of the return air duct 2; wherein, the return air outlet of the return air duct 2 is used to connect the return air duct 2 and the evaporator chamber 4; the end port of the return air duct 2 is used to connect the return air duct 2 and the compressor compartment 5; the driver drives the partition 7 to move under the control of the controller; the partition 7 is driven by the driver to move to the first connecting position so as to open the return air outlet and close the end port of the return air duct, so that the other end of the return air duct 2 is connected to the evaporator chamber 4; or, driven by the driver, is moved to the second connecting position so as to close the return air outlet and open the end port of the return air duct, so that the return air duct 2 is connected to the compressor compartment 5.

[0036] Furthermore, the actuator includes a motor capable of driving the partition 7 to move. This displacement can be achieved by rotating the partition 7 along its connection with the return air duct 2, so that the partition 7 moves to a vertical or horizontal position. The vertical position means that the plane of the partition 7 is perpendicular to the cross-section of the return air duct 2. The horizontal position means that the plane of the partition 7 is parallel to the cross-section of the return air duct 2.

[0037] Furthermore, the partition 7 has the same shape and area as the cross section of the return air duct 2, and the area of the partition 7 is greater than or equal to the area of the return air outlet. When the area of the partition 7 is equal to the area of the return air outlet, the shape of the partition, the shape of the return air duct 2, and the shape of the return air outlet are the same. The edge of the partition 7 may include a rotating shaft, so that the partition 7 can be set on the inner wall of the return air duct 2 through the rotating shaft and set on the side of the return air outlet close to the end port to form a rotating gate structure. The driver drives the partition to be: the driver drives the rotating shaft to rotate, and the rotating shaft drives the partition position to the first connection position or the second connection position. The first connection position is a horizontal position ( Figure 2 The second connecting position is the vertical position ( Figure 2 (The position of the partition 7 in the middle enlarged portion is shown). When the driver drives the partition 7 to move to the horizontal position, the partition blocks the return air duct 2, exposing the return air port, then opens the return air port and closes the terminal end of the return air duct 2. At this time, the air in the refrigerated compartment 3 enters the evaporator chamber 4 through the return air duct 2 and participates in the air circulation within the refrigerator. When the driver, under the control of the controller, drives the partition 7 to move to the vertical position, it covers the return air port and exposes the terminal end. Then, the return air port is closed and the terminal end of the return air duct is opened. At this time, the hot and humid air in the refrigerated compartment 3 enters the compressor compartment 5 through the return air duct 2 to dissipate heat for the condenser and compressor in the compressor compartment 5, and then is discharged from the refrigerator through the heat dissipation holes and enters the ambient air.

[0038] Furthermore, the controller is configured to determine a frost index corresponding to the refrigerator and control damper assembly 1 to adjust the connection position based on the frost index. Furthermore, upon determining that the frost index corresponding to the refrigerator falls within a certain index range, damper assembly 1 is controlled to adjust the connection position. The specific manner in which the controller determines the frost index corresponding to the refrigerator and controls the damper assembly to adjust the connection position based on the frost index will be described later in the refrigerator air duct control method and is not further elaborated here.

[0039] The single-system air-cooled refrigerator of the present application is provided with a return air duct from the refrigerated compartment to the compressor compartment. A return air port is provided on the inner wall of the return air duct, which is used to connect to the evaporator chamber. A damper unit is provided within a preset range of the return air port to change the path of the air duct system. Furthermore, a partition that can be driven by a driver can be provided on the inner wall of the return air duct. When the partition is rotated to a horizontal position, the partition blocks the terminal end of the return air duct, opening the return air port leading to the evaporator chamber. In this way, return air from the refrigerated compartment can enter the evaporator chamber and participate in the air circulation within the refrigerator, thereby achieving a refrigeration cycle. When the partition is rotated to a vertical position, the partition blocks the return air port leading to the evaporator chamber, opening the terminal end of the return air duct, and the return air from the refrigerated compartment is sucked into the compressor compartment by the condenser fan, which can be used to dissipate heat from the condenser and compressor.

[0040] Based on the above refrigerator air duct control system, an embodiment of the present application provides a single-system air-cooling refrigerator. The single-system air-cooling refrigerator includes the above refrigerator air duct control system.

[0041] Based on the above refrigerator air duct control system, the embodiment of the present application provides a refrigerator air duct control method. The execution subject of the refrigerator air duct control method is the above controller. Figure 3 FIG. 1 is a flow chart of a refrigerator air duct control method according to an embodiment of the present application.

[0042] Step S310: detecting refrigerator environmental parameters and user behavior data corresponding to a preset refrigerator.

[0043] Refrigerator environmental parameters refer to the temperature and humidity data inside and outside the refrigerator.

[0044] User behavior data refers to the length of time the refrigerator door is open.

[0045] Step S320: determining a frost index corresponding to the refrigerator based on refrigerator environmental parameters corresponding to the refrigerator and user behavior data.

[0046] The Frost Index indicates the risk of frost forming on the evaporator. The greater the difference in temperature and humidity between the inside and outside of the refrigerator, and the longer the door is open, the higher the Frost Index, indicating a higher risk of frost forming on the evaporator. The smaller the difference in temperature and humidity between the inside and outside of the refrigerator, and the shorter the door is open, the lower the Frost Index, indicating a lower risk of frost forming on the evaporator.

[0047] Step S330: Controlling a preset damper assembly to adjust a connection position according to the frost index so that the return air duct of the refrigerator switches between connecting to the evaporator chamber and connecting to the compressor compartment.

[0048] The connected position refers to the position where the damper assembly is conducting.

[0049] The damper assembly can be connected to the evaporator chamber or the compressor chamber. When the frost index range in which the frost index is located changes, the damper assembly is controlled to adjust the connection position.

[0050] In an embodiment of the present application, refrigerator environmental parameters and user behavior data corresponding to a preset refrigerator can be detected; based on the refrigerator environmental parameters and user behavior data corresponding to the refrigerator, a frost index corresponding to the refrigerator can be determined; based on the frost index, a preset damper assembly is controlled to adjust the connection position so that the return air duct of the refrigerator can switch between connecting to the evaporator cavity and connecting to the compressor compartment. The air duct system of the embodiment of the present application adopts a dual air path structure. Based on the frost index, the return air duct can be connected to the evaporator cavity or to the compressor compartment. When the return air duct is connected to the compressor compartment, the air flowing into the refrigerated compartment from the outside will be guided to the compressor compartment. In addition to cooling the condenser and compressor in the compressor compartment and reducing system energy consumption, this can also block hot and humid air from entering the evaporator cavity, effectively reducing the probability of frost on the evaporator.

[0051] In order to make the embodiments of the present application easier to understand, the refrigerator air duct control method of the embodiments of the present application will be further described below.

[0052] The refrigerator compartment temperature of a single-system air-cooled refrigerator is typically between 2°C and 4°C, with a relative humidity between 40% and 60%. The freezer compartment temperature is typically between -18°C and -24°C, with a relative humidity between 10% and 20%. In actual use, the refrigerator door is often opened 5-10 times more often than the freezer door. Clearly, evaporator frost in a single-system air-cooled refrigerator primarily originates from moisture in the return air from the refrigerator compartment.

[0053] In an embodiment of the present application, in order to avoid the problem of evaporator frosting caused by repeated opening of the refrigerated compartment door, the refrigerator environmental parameters and user behavior data corresponding to the preset refrigerator are first detected.

[0054] Specifically, the temperature and humidity of the refrigerator's refrigeration compartment, the temperature and humidity of the refrigerator's freezer compartment, and the temperature and humidity of the environment in which the refrigerator is located within a preset detection time period can be detected as refrigerator environmental parameters corresponding to the refrigerator; and the length of time the refrigerator's refrigeration compartment door is open and the length of time the freezer compartment door is open within the detection time period can be detected as user behavior data corresponding to the refrigerator.

[0055] The detection time period may be a time period with the current time as the end point. The length of the detection time period may be an empirical value or a value obtained through experiments.

[0056] Door opening time refers to the cumulative door opening time within the detection period.

[0057] Furthermore, refrigerator environmental parameters and user behavior data can be detected once every detection time period. Alternatively, a refrigerator air duct control instruction can be received, and based on the refrigerator air duct control instruction, refrigerator environmental parameters and user behavior data can be detected once. The refrigerator air duct control instruction can be triggered by a preset button. For example, when a user clicks the button, the refrigerator air duct control instruction is triggered. Of course, the two methods can be executed in parallel, that is, the refrigerator air duct control trigger instruction can be inserted as a task.

[0058] Furthermore, temperature and humidity sensors may be provided on the refrigerator compartment, freezer compartment and hinged cover of the refrigerator to respectively detect the temperature and humidity of the refrigerator compartment, the temperature and humidity of the freezer compartment and the temperature and humidity of the environment in which the refrigerator is located.

[0059] Furthermore, door light switches may be provided on the door of the refrigerating compartment and the door of the freezing compartment, respectively, to detect the door opening and closing times of the refrigerating compartment door and the door of the freezing compartment, respectively, so as to calculate the door opening time of the refrigerating compartment during the detection period based on the door opening and closing times of the refrigerating compartment door during the detection period, and calculate the door opening time of the freezing compartment during the detection period based on the door opening and closing times of the freezing compartment door during the detection period.

[0060] Furthermore, the temperature and humidity of the refrigerator's refrigerator compartment, the temperature and humidity of the refrigerator's freezer compartment, the temperature and humidity of the refrigerator's surrounding environment, and the duration of the refrigerator's refrigerator compartment door opening and the duration of the refrigerator's freezer door opening can be measured at preset sampling time intervals. The sampling time period is shorter than the detection time period. When detecting refrigerator environmental parameters and user behavior data, for each type of data, the integrated mean of the individual data detected within the detection time period can be used as the final data for that type.

[0061] Furthermore, since the position of the partitions may have been adjusted after the refrigerator was previously turned on, the corresponding refrigerator environmental parameters and user behavior data can be detected immediately after the refrigerator is turned on again. Of course, a reset mechanism can also be provided for the partitions, so that the partitions are reset to their initial position each time the refrigerator is turned off. The initial position can be horizontal, that is, a position that allows for a normal refrigeration cycle.

[0062] Since the intrusion of outside air into the refrigerator and freezer compartments will change the original temperature and humidity of the refrigerator and freezer compartments, the intrusion of outside hot and humid air can be accurately quantified based on the refrigerator environmental parameters and user behavior data.

[0063] In an embodiment of the present application, the frost index corresponding to the refrigerator is determined based on the refrigerator environmental parameters corresponding to the refrigerator and user behavior data.

[0064] The frost index refers to the risk level of frost on the evaporator.

[0065] Furthermore, the frost index corresponding to the refrigerator can be determined based on the refrigerator environmental parameters and user behavior data, and combined with the number of defrosts of the evaporator within a preset recording time period, using the number of defrosts as a defrost coefficient. For example, the frost index corresponding to the refrigerator can be determined using the following formula:

[0066] M=(a*(T3-T1)*(H3-H1)*t1+b*(T3-T2)*(H3-H2)*t2-c)*(1-d);

[0067] Among them, M represents the frost index corresponding to the refrigerator; T1 represents the temperature of the refrigerator's refrigeration compartment; T2 represents the temperature of the refrigerator's freezer compartment; T3 represents the temperature of the environment in which the refrigerator is located; t1 represents the length of time the refrigerator's refrigeration compartment door is open; t2 represents the length of time the freezer compartment door is open; a is the preset frost coefficient for the return air of the refrigeration compartment; b is the preset frost coefficient for the return air of the freezer compartment; c is the preset evaporator frost threshold; d is the defrost frequency coefficient of the refrigerator's evaporator within a preset recording time period.

[0068] The larger the temperature difference between T3 and T1, and between T3 and T2, the faster the intrusion of hot and humid air. The larger the humidity difference between H3 and H1, and between H3 and H2, the more moisture is introduced into the air duct. The larger the t1 and t2 values, the longer the door is open, the more air enters the refrigerator, and the greater the impact on evaporator frosting.

[0069] The recording period is another period of time that ends at the current time. The length of the recording period can be an empirical value or a value obtained through experimentation. The length of the recording period and the detection period can be the same or different. For example, the length of the recording period can be longer than the length of the detection period.

[0070] In this case, referring to the normal frosting and defrosting conditions of the evaporator, the evaporator will not frost for a period of time after the previous defrost is completed. To address this situation, the defrost completion time of each evaporator can be recorded; the average duration of two consecutive defrost completions can be calculated and set as the time difference threshold. In other words, if the time difference between the current time and the previous defrost completion time does not reach the time difference threshold, the evaporator will not frost. Thus, before determining the frost index, the previous defrost completion time of the refrigerator evaporator can be queried; if the time difference between the defrost completion time and the current time is less than the preset time difference threshold, the defrost frequency coefficient d is set to 1.

[0071] In an embodiment of the present application, a preset damper assembly is controlled to adjust the connection position according to the frost index so that the return air duct of the refrigerator switches between connecting to the evaporator chamber and connecting to the compressor compartment.

[0072] Specifically, when the damper assembly includes a diaphragm and a driver for driving the diaphragm, the displacement of the diaphragm in the damper assembly may be controlled in the following manner.

[0073] When the frost index range in which the frost index is located indicates that the evaporator of the refrigerator is in a normal environment, the driver is controlled to drive the partition to move to the first connecting position so as to open the return air port and close the end port of the return air duct, so that the return air duct is connected to the evaporator cavity.

[0074] When the frost index range in which the frost index is located indicates that the evaporator of the refrigerator is in a frosting environment, the driver is controlled to drive the partition to move to the second connecting position so as to close the return air port and open the end port of the return air duct, so that the return air duct is connected to the compressor compartment.

[0075] The normal environment refers to the temperature and humidity in the evaporator cavity, which makes the risk of frost on the evaporator low. The evaporator cavity is connected and the normal refrigeration cycle is carried out.

[0076] The frosting environment refers to the temperature and humidity inside the evaporator cavity, which makes the risk of frost on the evaporator high and requires blocking the hot and humid air from entering the evaporator cavity.

[0077] Furthermore, a frost index range indicating that the refrigerator's evaporator is in a normal environment and an index interval indicating that the refrigerator's evaporator is in a frosted environment can be pre-set. For example, a frost index interval of M ≤ 0 can be pre-set to indicate that the refrigerator's evaporator is in a normal environment; and a frost index interval of M > 0 can be pre-set to indicate that the refrigerator's evaporator is in a frosted environment.

[0078] For example: After the refrigerator is powered on, the refrigerator environmental parameters and user behavior data are immediately detected, and the frost index M is calculated. The shelf position is adjusted according to the calculated result of the frost index M. The frost index is then calculated every 5 minutes, where the temperature T1 and humidity H1 of the refrigerated compartment, the temperature T2 and humidity H2 of the freezer compartment, and the ambient temperature T3 and humidity H3 are all the integral mean of the data collected within 1 hour (detection period) before the calculation. When the user actively triggers the refrigerator duct control, if the collected data is less than 1 hour, for example, only 30 minutes, the integral mean of the data within 30 minutes can be temporarily substituted into the calculation of the frost index until the collected data exceeds 1 hour, and the frost index is calculated again. After each evaporator defrost, M = 0 within 4 hours (recording period). That is, within 4 hours after the evaporator defrosts, only statistical data is recorded and no shelf adjustment is performed.

[0079] In an embodiment of the present application, the frost index corresponding to the refrigerator can also be determined only based on the refrigerator environmental parameters corresponding to the refrigerator and the user behavior data. For example, the above formula is adjusted to M=a*(T3-T1)*(H3-H1)*t1+b*(T3-T2)*(H3-H2)*t2-c. In this case, when the frost index interval where the frost index is located indicates that the evaporator of the refrigerator is in a frosting environment, the driver is controlled to drive the partition to move to the second connection position, including: when the frost index interval where the frost index is located indicates that the evaporator of the refrigerator is in a frosting environment, querying the previous defrost completion time of the evaporator of the refrigerator; when the time difference between the defrost completion time and the current time is less than the preset time difference threshold, controlling the driver to drive the partition to move to the second connection position.

[0080] The embodiment of the present application discloses an air duct control method applied to a single-system air-cooled refrigerator. By monitoring the length of time the refrigerator door is opened and the temperature and humidity changes before and after the refrigerator door is opened, it is determined whether the return air inlet from the refrigerated compartment to the evaporator chamber needs to be closed, and the return air from the refrigerated compartment is introduced into the compressor compartment. This reduces the problem of high-humidity air entering the evaporator chamber, causing a rapid increase in evaporator frosting in a short period of time, which in turn affects the refrigeration efficiency, thereby improving the refrigeration efficiency and reliability of the refrigerator.

[0081] The embodiment of the present application also provides a refrigerator air duct control device. The refrigerator air duct control device can be set in the above-mentioned controller. Figure 4 2 is a structural diagram of a refrigerator air duct control device according to an embodiment of the present application.

[0082] The refrigerator air duct control device comprises:

[0083] The detection module 410 is used to detect refrigerator environmental parameters and user behavior data corresponding to a preset refrigerator.

[0084] The determination module 420 is configured to determine a frost index corresponding to the refrigerator based on refrigerator environmental parameters corresponding to the refrigerator and user behavior data.

[0085] The control module 430 is used to control the preset damper assembly to adjust the connection position according to the frost index so that the return air duct of the refrigerator switches between connecting to the evaporator chamber and connecting to the compressor compartment.

[0086] The functions of the device described in the embodiment of the present application have been described in the above method embodiment. Therefore, for any details not fully described in the description of this embodiment, please refer to the relevant description in the above embodiment and will not be repeated here.

[0087] The present application also provides a refrigerator air duct control device, such as Figure 5 1 is a structural diagram of a refrigerator air duct control device according to an embodiment of the present application.

[0088] The refrigerator air duct control device includes: a processor 510, a communication interface 520, a memory 530 and a communication bus 540. The processor 510, the communication interface 520 and the memory 530 communicate with each other via the communication bus 540.

[0089] The memory 530 is used to store computer programs.

[0090] In one embodiment of the present application, the processor 510, when executing the program stored on the memory 530, implements the refrigerator duct control method provided by any of the aforementioned method embodiments, including: detecting the refrigerator environmental parameters and user behavior data corresponding to a preset refrigerator; determining the frost index corresponding to the refrigerator based on the refrigerator environmental parameters and user behavior data corresponding to the refrigerator; controlling the preset damper assembly to adjust the connection position based on the frost index so that the return air duct of the refrigerator switches between connecting to the evaporator chamber and connecting to the compressor compartment.

[0091] Among them, the detecting of refrigerator environmental parameters and user behavior data corresponding to a preset refrigerator includes: detecting the temperature and humidity of the refrigerator's refrigeration compartment, the temperature and humidity of the refrigerator's freezer compartment, and the temperature and humidity of the environment in which the refrigerator is located within a preset detection time period, as the refrigerator environmental parameters corresponding to the refrigerator; detecting the length of time the refrigerator's refrigeration compartment door is open and the length of time the freezer compartment door is open within the detection time period, as the user behavior data corresponding to the refrigerator.

[0092] Wherein, determining the frost index corresponding to the refrigerator according to the refrigerator environmental parameters corresponding to the refrigerator and the user behavior data includes: using the following formula to determine the frost index corresponding to the refrigerator: M = (a*(T3-T1)*(H3-H1)*t1+b*(T3-T2)*(H3-H2)*t2-c)*(1-d); wherein, M represents the frost index corresponding to the refrigerator; T1 represents the temperature of the refrigerator's refrigeration compartment; T2 represents the temperature of the refrigerator's freezer compartment; T3 represents the temperature of the environment in which the refrigerator is located; t1 represents the door opening time of the refrigerator's refrigeration compartment; t2 represents the door opening time of the refrigerator's freezer compartment; a is a preset refrigeration compartment return air frost coefficient; b is a preset freezer compartment return air frost coefficient; c is a preset evaporator frost threshold; d is a defrost frequency coefficient of the refrigerator's evaporator within a preset recording time period.

[0093] Wherein, before determining the frost index corresponding to the refrigerator based on the refrigerator environmental parameters corresponding to the refrigerator and the user behavior data, it also includes: querying the previous defrost completion time of the evaporator of the refrigerator; when the time difference between the defrost completion time and the current time is less than a preset time difference threshold, setting the defrost number coefficient to 1.

[0094] In which, the damper assembly includes: a partition and a driver for driving the partition; the damper assembly preset according to the frost index control adjusts the connection position, including: when the frost index range where the frost index is located indicates that the evaporator of the refrigerator is in a normal environment, controlling the driver to drive the partition to move to the first connection position so as to open the return air port and close the end port of the return air duct, so that the return air duct is connected to the evaporator cavity; when the frost index range where the frost index is located indicates that the evaporator of the refrigerator is in a frosted environment, controlling the driver to drive the partition to move to the second connection position so as to close the return air port and open the end port of the return air duct, so that the return air duct is connected to the compressor compartment.

[0095] The present application also provides a computer-readable storage medium having a computer program stored thereon. When executed by a processor, the computer program implements the steps of the refrigerator air duct control method provided in any of the aforementioned method embodiments. Since the refrigerator air duct control method has been described in detail above, any details not fully described in this embodiment can be referred to the relevant descriptions in the aforementioned embodiments and will not be repeated here.

[0096] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of this embodiment.

[0097] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a general hardware platform, or of course, by hardware. Based on this understanding, the above technical solution, in essence, or the part that contributes to the relevant technology, can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or certain parts of the embodiment.

[0098] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0099] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A refrigerator air duct control system, characterized in that: include: A damper assembly and a controller for controlling the damper assembly; The damper assembly is arranged in the return air duct of a preset refrigerator; wherein one end of the return air duct is connected to the refrigeration compartment of the refrigerator; The damper assembly adjusts the connection position under the control of the controller, so that the other end of the return air duct switches between connecting to the evaporator chamber and connecting to the compressor compartment.

2. The system according to claim 1, wherein: The damper assembly includes: a baffle and a driver for driving the baffle; The partition is movably arranged at the return air inlet of the return air duct; wherein the return air inlet of the return air duct is used to connect the return air duct and the evaporator chamber; the end port of the return air duct is used to connect the return air duct and the compressor compartment; The driver drives the partition to move under the control of the controller; Driven by the driver, the partition is displaced to a first connecting position so as to open the return air port and close the end port of the return air duct, so that the other end of the return air duct is connected to the evaporator chamber; or, driven by the driver, the partition is displaced to a second connecting position so as to close the return air port and open the end port of the return air duct, so that the return air duct is connected to the compressor compartment.

3. A refrigerator air duct control method, characterized in that: The controller used in any one of claims 1-2 comprises: Detect refrigerator environmental parameters and user behavior data corresponding to the preset refrigerator; Determining a frost index corresponding to the refrigerator based on refrigerator environmental parameters corresponding to the refrigerator and user behavior data; The preset damper assembly is controlled to adjust the connection position according to the frost index so that the return air duct of the refrigerator is switched between connecting to the evaporator chamber and connecting to the compressor compartment.

4. The method according to claim 3, characterized in that The detecting of refrigerator environment parameters and user behavior data corresponding to the preset refrigerator includes: detecting the temperature and humidity of the refrigerator compartment, the temperature and humidity of the freezer compartment, and the temperature and humidity of the environment in which the refrigerator is located within a preset detection time period as refrigerator environmental parameters corresponding to the refrigerator; The duration of the door opening of the refrigerator compartment and the door opening of the freezer compartment of the refrigerator during the detection time period are detected as user behavior data corresponding to the refrigerator.

5. The method according to claim 4, characterized in that The determining, based on refrigerator environmental parameters corresponding to the refrigerator and user behavior data, a frost index corresponding to the refrigerator, includes: The frost index corresponding to the refrigerator is determined using the following formula: M=(a*(T3-T1)*(H3-H1)*t1+b*(T3-T2)*(H3-H2)*t2-c)*(1-d); Among them, M represents the frost index corresponding to the refrigerator; T1 represents the temperature of the refrigerator's refrigeration compartment; T2 represents the temperature of the refrigerator's freezer compartment; T3 represents the temperature of the environment in which the refrigerator is located; t1 represents the length of time the refrigerator's refrigeration compartment door is open; t2 represents the length of time the freezer compartment door is open; a is the preset frost coefficient for the return air of the refrigeration compartment; b is the preset frost coefficient for the return air of the freezer compartment; c is the preset evaporator frost threshold; d is the defrost frequency coefficient of the refrigerator's evaporator within a preset recording time period.

6. The method according to claim 5, characterized in that Before determining the frost index corresponding to the refrigerator according to the refrigerator environment parameters corresponding to the refrigerator and the user behavior data, the method further includes: Querying the last defrost completion time of the evaporator of the refrigerator; When the time difference between the defrost completion time and the current time is less than a preset time difference threshold, the defrost number coefficient is set to 1.

7. The method according to claim 3, characterized in that The damper assembly includes: a baffle and a driver for driving the baffle; The controlling of the preset damper assembly to adjust the communication position according to the frost index includes: When the frost index range indicates that the evaporator of the refrigerator is in a normal environment, controlling the driver to drive the partition to move to a first communication position to open the return air port and close the end port of the return air duct, so that the return air duct is connected to the evaporator chamber; When the frost index range in which the frost index is located indicates that the evaporator of the refrigerator is in a frosting environment, the driver is controlled to drive the partition to move to the second connecting position so as to close the return air port and open the end port of the return air duct, so that the return air duct is connected to the compressor compartment.

8. A refrigerator air duct control device, characterized in that: The controller used in any one of claims 1-2 comprises: A detection module, used to detect refrigerator environmental parameters and user behavior data corresponding to a preset refrigerator; a determination module, configured to determine a frost index corresponding to the refrigerator based on refrigerator environmental parameters corresponding to the refrigerator and user behavior data; The control module is used to control the preset damper assembly to adjust the connection position according to the frost index so that the return air duct of the refrigerator is switched between connecting to the evaporator chamber and connecting to the compressor compartment.

9. A single-system air-cooled refrigerator, characterized in that: The refrigerator air duct control system comprises the refrigerator air duct control system according to any one of claims 1-2.

10. A refrigerator air duct control device, characterized in that: include: at least one communication interface; at least one bus connected to the at least one communication interface; at least one processor connected to the at least one bus; At least one memory connected to the at least one bus, wherein the processor is configured to: execute a refrigerator air duct control program stored in the memory to implement the refrigerator air duct control method according to any one of claims 3 to 7.

11. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are executed to implement the refrigerator air duct control method according to any one of claims 3 to 7.

Images