Refrigerator, defrosting control method of refrigerator and storage medium

Abstract

The embodiment of the invention belongs to the technology of household appliances, and provides a refrigerator, a defrosting control method of the refrigerator and a storage medium, and the method comprises the following steps: within a first preset duration from the beginning of refrigeration to the stop of refrigeration of a refrigeration system, obtaining a plurality of first temperature change rates of a target chamber and a plurality of second temperature change rates of an evaporator; according to the multiple first temperature change rates and the multiple second temperature change rates, whether a defrosting mode is started or not is determined, and the defrosting mode is used for removing a frost layer on the evaporator. By monitoring the temperature change rate of the chamber and the temperature change rate of the evaporator, defrosting can be carried out when the frosting amount of the refrigerator is large enough and the temperature in the chamber is about to be affected, and the accuracy of defrosting control is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of household appliances, and more specifically, to a refrigerator, a defrosting control method for the refrigerator, and a storage medium. Background Art

[0002] When the refrigerator is refrigerating, the moisture in the circulating air will frost on the evaporator and connecting pipes, so the evaporator and connecting pipes need to be defrosted.

[0003] Currently, when determining whether to turn on the defrost mode, the refrigerator can determine the defrost cycle based on the ambient temperature of the environment where the refrigerator is located, the number of times the door is opened and closed within a certain period of time, etc., and turn on the defrost mode according to the defrost cycle.

[0004] However, defrosting according to a fixed defrost cycle is prone to over-defrosting or insufficient defrosting, resulting in poor refrigeration effect of the refrigerator. Summary of the invention

[0005] The embodiments of the present application provide a refrigerator, a defrost control method for the refrigerator, and a storage medium, which can be used to solve the problem in the related art that defrosting according to a fixed defrost cycle is prone to excessive defrosting or insufficient defrosting, resulting in a poor refrigeration effect of the refrigerator.

[0006] In a first aspect, an embodiment of the present application provides a refrigerator, comprising:

[0007] A box body, wherein a storage chamber is provided in the box body, and the storage chamber includes at least one of a refrigerating chamber, a freezing chamber, and a temperature-changing chamber;

[0008] A refrigeration system arranged in the box includes a compressor and an evaporator, wherein the compressor is used to provide power for the refrigeration cycle of the refrigerator, and the evaporator is used to provide cold capacity for the refrigerator;

[0009] The control component is configured as follows:

[0010] Acquiring a plurality of first temperature change rates of the target compartment and a plurality of second temperature change rates of the evaporator within a first preset time period from when the refrigeration system starts refrigeration to when it stops refrigeration;

[0011] According to the plurality of first temperature change rates and the plurality of second temperature change rates, it is determined whether to start a defrost mode, wherein the defrost mode is used to remove a frost layer on the evaporator.

[0012] In this embodiment, the refrigerator includes a box, a storage room arranged in the box, a refrigeration system and a control component arranged in the box, the refrigeration system includes a compressor and an evaporator, the compressor is used to provide power for the refrigeration cycle of the refrigerator, the defrost heater is used to provide coldness for the refrigerator, and the control component is configured to obtain multiple first temperature change rates of the target compartment and multiple second temperature change rates of the evaporator within a first preset time after the refrigeration system starts to stop refrigeration, and determine whether to turn on the defrost mode according to the multiple first temperature change rates and the multiple second temperature change rates. The defrost mode is used to remove the frost layer on the evaporator. By monitoring the temperature change rate of the compartment and the temperature change rate of the evaporator, the present application can perform defrosting when the amount of frost in the refrigerator is sufficient and is about to affect the temperature inside the compartment, thereby improving the accuracy of defrost control.

[0013] In some embodiments of the present application, the control component is configured as follows:

[0014] Determining a first change trend of the plurality of first temperature change rates and a second change trend of the plurality of second temperature change rates;

[0015] Whether to turn on the defrost mode is determined according to the first change trend and the second change trend.

[0016] In this embodiment, whether to turn on the defrost mode can be determined based on the changing trends of the temperature change rate of the compartment and the temperature change rate of the evaporator. Defrosting can be performed when the amount of frost in the refrigerator is large enough and is about to affect the temperature in the compartment, thereby achieving accurate defrosting.

[0017] In some embodiments of the present application, the refrigerator further comprises a fan, wherein the fan is configured to send air into the evaporator for heat exchange and send the heat-released air into the target compartment;

[0018] The control component is configured to:

[0019] Acquiring a final temperature of the evaporator within the first preset time period;

[0020] Determine whether the first change trend does not satisfy a first preset condition, and whether the final temperature and the second change trend do not satisfy a second preset condition; the first preset condition includes the first preset change trend, the first preset change trend is a preset change trend of the temperature change rate of the target compartment, the second preset condition includes a second preset change trend, and the final temperature of the evaporator within the first preset time is above a preset threshold, wherein the second preset change trend is a preset change trend of the temperature change rate of the compressor;

[0021] If yes, then determine to turn on the defrost mode;

[0022] If not, determining whether the first change trend satisfies the first preset condition;

[0023] If the first change trend satisfies the first condition, the compressor and the fan are turned on, and the speed of the compressor is increased to a first speed, and the speed of the fan is increased to a second speed; according to a plurality of third temperature change rates of the evaporator within a second preset time after the compressor is turned on, it is determined whether to turn on the defrost mode;

[0024] If the first change trend does not satisfy the first preset condition, the refrigeration system is controlled to cool the target compartment.

[0025] In this embodiment, whether to turn on the defrost mode can be determined based on the changing trends of the temperature change rate of the compartment and the temperature change rate of the evaporator. Defrosting can be performed when the amount of frost in the refrigerator is large enough and is about to affect the temperature inside the compartment, thereby achieving accurate defrosting.

[0026] In some embodiments of the present application, the control component is configured as follows:

[0027] within a second preset time after the compressor is turned on, obtaining the plurality of third temperature change rates and a final temperature of the evaporator within the second preset time;

[0028] determining a third change trend of the plurality of third temperature change rates;

[0029] Determining whether the final temperature of the evaporator within the second preset time period is above the preset threshold, and whether the third change trend satisfies the second preset change trend;

[0030] If not, it is determined to start the defrost mode.

[0031] In this embodiment, when the temperature change rate of the compartment satisfies the first preset change trend, and the final temperature of the evaporator within the second preset time and the third change trend of the evaporator do not meet the second preset condition, the refrigeration of the compartment can be accelerated to determine whether frost blockage occurs in the evaporator.

[0032] In some embodiments of the present application, the control component is configured as follows:

[0033] If the first change trend does not satisfy the first condition, and the final temperature and the second change trend satisfy the second condition, turning on the compressor and the fan, and increasing the speed of the compressor to a third speed, and increasing the speed of the fan to a fourth speed;

[0034] The compressor is controlled to operate at the third speed and the fan is controlled to operate at the fourth speed to cool the target compartment.

[0035] In this embodiment, when the temperature change rate of the compartment does not meet the preset change trend, and the temperature change rate of the evaporator meets its preset change trend, indicating that the evaporator is not abnormal, the compartment can be cooled faster to make the temperature of the compartment reach a normal state.

[0036] In some embodiments of the present application, if the storage room includes a refrigerating room, a freezing room, and a temperature-changing room, and the refrigeration system cools the refrigerating room, the freezing room, and the temperature-changing room at the same time; the control component is configured as follows:

[0037] When the refrigeration system stops refrigeration, obtaining a first temperature of the refrigerating chamber, a second temperature of the freezing chamber, and a third temperature of the temperature changing chamber;

[0038] The target compartment is determined according to the first temperature, the second temperature and the third temperature.

[0039] In this embodiment, if the refrigerator is a single-system refrigerator, when controlling the defrosting of the evaporator, it can be determined whether to turn on the defrosting mode according to the temperature change rate of the compartment with the highest temperature.

[0040] In some embodiments of the present application, the refrigerator further includes a first temperature sensor and a second temperature sensor;

[0041] The first temperature sensor is disposed in the target compartment and is configured to detect the temperature of the target compartment;

[0042] The second temperature sensor is disposed at one side of the evaporator and is configured to detect the temperature of the evaporator.

[0043] In this embodiment, the temperature of the compartment and the temperature of the evaporator may be acquired through a temperature sensor.

[0044] In some embodiments of the present application, the control component is configured as follows:

[0045] When the defrost mode is turned on for a third preset time, obtaining a fourth temperature of the target compartment;

[0046] If the fourth temperature is greater than the preset startup temperature of the target compartment, a prompt message is output, where the prompt message is used to prompt the user that the current temperature of the refrigerator is high.

[0047] In this embodiment, after the defrost mode is turned on, the user can be prompted according to the temperature of the compartment, so that when the temperature of the refrigerator is high, the user can avoid putting hot food in and reduce the number of times the refrigerator door is opened, so that the refrigerator can operate in a better state.

[0048] In a second aspect, the present application provides a defrost control method for a refrigerator, the refrigerator comprising:

[0049] A box body, wherein a storage chamber is provided in the box body, and the storage chamber includes at least one of a refrigerating chamber, a freezing chamber, and a temperature-changing chamber;

[0050] A refrigeration system arranged in the box includes a compressor and an evaporator, wherein the compressor is used to provide power for the refrigeration cycle of the refrigerator, and the evaporator is used to provide cold capacity for the refrigerator;

[0051] The method comprises:

[0052] Acquiring a plurality of first temperature change rates of the target compartment and a plurality of second temperature change rates of the evaporator within a first preset time period from when the refrigeration system starts refrigeration to when it stops refrigeration;

[0053] According to the plurality of first temperature change rates and the plurality of second temperature change rates, it is determined whether to start a defrost mode, wherein the defrost mode is used to remove a frost layer on the evaporator.

[0054] In this embodiment, within a first preset time period after the refrigeration system starts to stop refrigeration, multiple first temperature change rates of the target compartment and multiple second temperature change rates of the evaporator are obtained, and according to the multiple first temperature change rates and the multiple second temperature change rates, it is determined whether to turn on the defrost mode, and the defrost mode is used to remove the frost layer on the evaporator. By monitoring the temperature change rate of the compartment and the temperature change rate of the evaporator, the present application can perform defrosting when the amount of frost in the refrigerator is sufficient and is about to affect the temperature inside the compartment, thereby improving the accuracy of defrost control.

[0055] In a third aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a computer, they are used to implement the method described in the second aspect.

[0056] The computer-readable storage medium provided in the embodiment of the present application can execute the technical solution in the above method embodiment, and its beneficial effects are similar, which will not be repeated here.

[0057] In a fourth aspect, the present application provides a computer program product, including a computer program, wherein the computer program is used to implement the method described in the second aspect when executed by a computer.

[0058] The computer program product provided in the embodiment of the present application can execute the technical solution in the above method embodiment, and its beneficial effects are similar and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the implementation methods in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technology descriptions. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0060] Figure 1 A schematic diagram of the structure of a refrigerator provided in this application;

[0061] Figure 2 A schematic diagram of the structure of another refrigerator provided in an embodiment of the present application;

[0062] Figure 3 A schematic diagram of the structure of another refrigerator provided in an embodiment of the present application;

[0063] Figure 4 A schematic diagram of a flow chart of a refrigerator defrosting control method provided in an embodiment of the present application;

[0064] Figure 5 A schematic flow chart of another refrigerator defrosting control method provided in an embodiment of the present application;

[0065] Figure 6 A schematic diagram of a first preset duration of an example of this application;

[0066] Figure 7 A schematic diagram of a first preset change trend and a second preset change trend of an example of this application;

[0067] Figure 8 A schematic flow chart of another refrigerator defrosting control method provided in an embodiment of the present application;

[0068] Fig. 9 A schematic flow chart of another refrigerator defrosting control method provided in an embodiment of the present application;

[0069] Fig.10 A flow chart of another refrigerator defrost control method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0070] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0071] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0072] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such products or devices.

[0073] At present, when determining whether to turn on the defrost mode, the refrigerator can determine the defrost cycle based on the ambient temperature of the environment where the refrigerator is located, the number of times the door is opened and closed within a certain period of time, etc., and turn on the defrost mode according to the defrost cycle. However, defrosting according to a fixed defrost cycle is prone to excessive defrosting or insufficient defrosting, resulting in poor refrigeration effect of the refrigerator.

[0074] Specifically, when the evaporator is over-frosted, the temperature of the refrigerator or freezer will be affected when defrosting according to a fixed defrosting cycle, which may easily cause food to melt or the preservation of refrigerated food to deteriorate.

[0075] When the evaporator is not over-frosted, it means that the compartment is well refrigerated and the evaporator has not reached the over-frosted state. Defrosting according to the fixed defrost cycle will cause overheating, which will easily affect the refrigeration and preservation of each compartment of the refrigerator.

[0076] Therefore, the present application provides a refrigerator, which can defrost when the amount of frost in the refrigerator is large enough and is about to affect the temperature inside the compartment by monitoring the temperature change rate of the compartment and the temperature change rate of the evaporator, and based on the changing trend of the temperature change rate of the compartment and the changing trend of the temperature change rate of the evaporator.

[0077] The technical solution of the present application is described in detail below in conjunction with specific embodiments. The following specific embodiments can be combined with each other or exist independently. The same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0078] Figure 1 A schematic diagram of the structure of a refrigerator provided in this application, such as Figure 1 As shown, the refrigerator includes a cabinet 101 , a storage chamber (not shown in the figure) arranged in the cabinet 101 , a refrigeration system 102 arranged in the cabinet 101 , and a control component 103 arranged in the cabinet 101 .

[0079] The refrigeration system 102 includes a compressor 31 and an evaporator 32 . The compressor 31 is used to provide power for the refrigeration cycle of the refrigerator 10 , and the evaporator 32 is used to provide cooling for the refrigerator 101 .

[0080] The storage room may include at least one of a refrigerating room, a freezing room, and a temperature-changing room. The following description will be given by taking an example that the storage room includes a refrigerating room, a freezing room, and a temperature-changing room.

[0081] The control component 103 is configured to:

[0082] Within a first preset time period from when the refrigeration system 103 starts to stop refrigeration, multiple first temperature change rates of the target compartment and multiple second temperature change rates of the evaporator 32 are obtained, and based on the multiple first temperature change rates and the multiple second temperature change rates, it is determined whether to turn on the defrost mode, which is used to remove the frost layer on the evaporator 32.

[0083] In a possible implementation, the refrigerator may be a single-system refrigerator, that is, the refrigeration system 102 may be used to refrigerate a refrigerator, a freezer, and a temperature-changing chamber. Then, the control component may determine the target compartment from the refrigerator, the freezer, and the temperature-changing chamber.

[0084] In another possible implementation, the refrigerator may be a multi-system refrigerator, that is, the refrigeration system 102 cools the target compartment alone, and the target compartment may be a refrigerator, a freezer, or a temperature-changing room. That is, when the refrigeration system 102 is working, the target compartment is the compartment corresponding to the refrigeration system 102.

[0085] In one possible implementation, Figure 2 A schematic diagram of the structure of another refrigerator provided in an embodiment of the present application, wherein the refrigerator may further include a fan 33, wherein the fan 33 is configured to send air into the evaporator 32 for heat exchange and send the heat-released air into a target compartment, thereby accelerating the refrigeration of the target compartment.

[0086] In one possible implementation, Figure 2 As shown, the refrigerator may further include a defrost heater 104, which is disposed near the evaporator 32 and is used to remove the frost layer on the evaporator 32. When the defrost mode is determined to be turned on, the control component 103 may control the defrost heater 104 to turn on, thereby removing the frost layer on the evaporator 32.

[0087] In one possible implementation, Figure 3A structural schematic diagram of another refrigerator provided in an embodiment of the present application, the refrigerator may also include a first temperature sensor 105 and a second temperature sensor 106, the first temperature sensor 105 is arranged in the target compartment and is configured to detect the temperature of the target compartment, and the second temperature sensor 106 is arranged on one side of the evaporator 32 and is configured to detect the temperature of the evaporator 32.

[0088] Exemplarily, the control component 103 may be a microcontroller unit (MCU), and the control component 103 is electrically connected to the defrost heater 104, the fan 33, the first temperature sensor 105, and the second temperature sensor 106, respectively.

[0089] Based on the above refrigerator, Figure 4 A flowchart of a refrigerator defrosting control method provided in an embodiment of the present application is provided. The method can be executed by a control component of the refrigerator, such as Figure 4 As shown, the method comprises the following steps:

[0090] S401. Acquire a plurality of first temperature change rates of a target compartment and a plurality of second temperature change rates of an evaporator within a first preset time period from when the refrigeration system starts refrigeration to when it stops refrigeration.

[0091] The control component can obtain a plurality of first temperature change rates of the target compartment and a plurality of second temperature change rates of the evaporator within a first preset time period from when the refrigeration system starts refrigeration to when it stops refrigeration.

[0092] Exemplarily, any first temperature change rate among the plurality of first temperature change rates can be expressed by formula (1):

[0093]

[0094] Wherein, T(t) is the average rate of change of the function T(t) from time t1 to time t2, T(t2) is the temperature of the target compartment at time t2, and T(t1) is the temperature of the target compartment at time t1. In other words, the first temperature change rate is the temperature change rate of the target compartment within a preset time Δt. Then, the first preset time from the start of refrigeration to the stop of refrigeration by the refrigeration system may include multiple Δt.

[0095] Similarly, any second temperature change rate among the plurality of second temperature change rates can also be expressed by formula (1).

[0096] The control component can obtain multiple first temperature change rates and multiple second temperature change rates within a first preset time period according to the model of formula (1).

[0097] S402: Determine whether to start a defrost mode according to the plurality of first temperature change rates and the plurality of second temperature change rates, where the defrost mode is used to remove frost on the evaporator.

[0098] After obtaining a plurality of first temperature change rates and a plurality of second temperature change rates, the control component may determine whether to turn on the defrost mode according to the plurality of first temperature change rates and the plurality of second temperature change rates, thereby achieving defrosting for the evaporator.

[0099] Exemplarily, the control component may determine whether to turn on the defrost mode based on the changing trends of a plurality of first temperature change rates and the changing trends of a plurality of second temperature change rates.

[0100] For example, if it is determined to turn on the defrost mode, the control component can control the defrost heater to turn on, thereby heating the surface of the evaporator and defrosting the evaporator.

[0101] In this embodiment, within a first preset time period after the refrigeration system starts to stop refrigeration, multiple first temperature change rates of the target compartment and multiple second temperature change rates of the evaporator are obtained, and according to the multiple first temperature change rates and the multiple second temperature change rates, it is determined whether to turn on the defrost mode, and the defrost mode is used to remove the frost layer on the evaporator. By monitoring the temperature change rate of the compartment and the temperature change rate of the evaporator, the present application can perform defrosting when the amount of frost in the refrigerator is sufficient and is about to affect the temperature inside the compartment, thereby improving the accuracy of defrost control.

[0102] The following describes in detail how the control component determines whether to turn on the defrost mode according to the changing trends of the multiple first temperature change rates and the changing trends of the multiple second temperature change rates.

[0103] Figure 5 A flowchart of another refrigerator defrosting control method provided in an embodiment of the present application is provided. The method can be executed by a control component of the refrigerator, such as Figure 5 As shown, the method comprises the following steps:

[0104] S501. Acquire a plurality of first temperature change rates of a target compartment and a plurality of second temperature change rates of an evaporator within a first preset time period from when the refrigeration system starts refrigeration to when it stops refrigeration.

[0105] S502: Obtain the final temperature of the evaporator within a first preset time period.

[0106] S503: Determine a first change trend of a plurality of first temperature change rates and a second change trend of a plurality of second temperature change rates.

[0107] For example, Figure 6As shown, the first preset time length can be divided into multiple intervals, for example, a first interval (corresponding to Δt1), a second interval (corresponding to Δt2) and a third interval (corresponding to Δt3), wherein the first interval corresponds to the first moment when the refrigeration system starts refrigeration to the second moment when refrigeration stops refrigeration, the second interval corresponds to the first moment when the refrigeration system stops refrigeration to the third moment corresponding to the first time length after the first moment, and the third interval is from the third moment to the fourth moment corresponding to the first preset time length.

[0108] The control component can determine the change trend of the first temperature change rate of each of the above three intervals, and determine the change trend of the second temperature change rate of each of the above three intervals. Exemplarily, the change trend can be decreasing, increasing or unchanged.

[0109] For example, taking formula (1) as an example, the change trend can be determined by the size of the derivative of formula (1), that is, formula (2):

[0110]

[0111] Taking the first interval as an example, when T ′ (t) is less than 0 in the first interval, it can be determined that the change trend of the second temperature change rate in the first interval is decreasing. ′ (t) is equal to 0 in the first interval, it can be determined that the change trend of the second temperature change rate in the first interval is unchanged, that is, a constant. ′ (t) is greater than 0 in the first interval, it can be determined that the change trend of the second temperature change rate in the first interval is increasing.

[0112] S504: Determine whether the first change trend does not satisfy a first preset condition, and whether the final temperature and the second change trend do not satisfy a second preset condition.

[0113] Whether the first change trend does not meet the first preset condition, and whether the final temperature and the second change trend do not meet the second preset condition, it means that the evaporator is frosted a lot, affecting the temperature of the evaporator and the refrigeration of the target compartment, then execute S505; if not, it means that the first change trend meets the first preset condition, or the final temperature and the second change trend meet the second preset condition, it can be further determined whether the first change trend meets the first preset condition, then execute S506.

[0114] The first preset condition includes a first preset change trend, which may be a change trend of a temperature change rate of the target compartment within a first preset time period after the refrigeration system starts to stop refrigeration, and the second preset condition includes a second preset change trend, and the final temperature of the evaporator within the first preset time period is above a preset threshold value, and the second preset change trend may be a preset change trend of a temperature change rate of the evaporator within the first preset time period after the refrigeration system starts to stop refrigeration.

[0115] It should be noted that when the final temperature of the evaporator within the first preset time period is above the preset threshold and the second change trend meets the second preset change trend, then the final temperature of the evaporator within the first preset time period and the second change trend meet the second preset condition; otherwise, it can be determined that the final temperature of the evaporator within the first preset time period and the second change trend do not meet the second preset condition.

[0116] For example, when the evaporator is in a normal state (for example, no frost blockage occurs) and the target compartment is refrigerated normally, Figure 7 As shown, the first preset change trend may be decreasing in the first interval, remaining unchanged in the second interval, and increasing in the third interval; the second preset change trend may be decreasing in the first interval, remaining unchanged in the second and third intervals, and the final temperature of the evaporator within the first preset time period is above the preset threshold.

[0117] S505: Determine to start the defrost mode.

[0118] S506: Determine whether the first change trend satisfies a first preset condition.

[0119] If the first change trend satisfies the first preset condition, it means that the final temperature of the evaporator within the first preset time and the second change trend do not meet the second preset condition, indicating that the evaporator may be blocked by frost at this time, and the refrigeration of the target compartment can be accelerated to further determine whether the temperature of the evaporator meets the second preset condition after the target compartment is refrigerated again, and then S507 is executed. If the first change trend does not meet the first preset condition, it means that the final temperature of the evaporator within the first preset time and the second change trend meet the second preset condition, and then the temperature abnormality of the target compartment is not caused by frost blockage of the evaporator, and then S508 is executed.

[0120] S507, turning on the compressor and increasing the speed of the compressor to a first speed, and determining whether to turn on the defrost mode according to a plurality of third temperature change rates of the evaporator within a second preset time after the compressor is turned on.

[0121] The first speed may be greater than the speed of the compressor when the refrigeration system is normally refrigerating, so that the target compartment can be quickly refrigerated. Then the control component may control the compressor to run at the second speed for a second preset time, and then obtain multiple third temperature change rates of the evaporator within the second preset time, so as to determine whether to turn on the defrost mode according to the multiple third temperature change rates.

[0122] S508, controlling the refrigeration system to cool the target room.

[0123] In this embodiment, the control component obtains multiple first temperature change rates of the target compartment and multiple second temperature change rates of the evaporator within the first preset time after the refrigeration system starts to stop refrigeration, determines the first change trend of the multiple first temperature change rates, and the second change trend of the multiple second temperature change rates, obtains the final temperature of the evaporator within the first preset time, and then determines whether the first change trend does not meet the first preset condition, and whether the final temperature and the second change trend do not meet the second preset condition. If so, it is determined to start the defrost mode, if not, it is determined whether the first change trend meets the first preset condition. If the first change trend meets the first preset condition, the compressor is turned on and the speed of the compressor is increased to the first speed. According to the multiple third temperature change rates of the evaporator within the second preset time after the compressor is turned on, it is determined whether to start the defrost mode. If the first change trend does not meet the first preset condition, the refrigeration system is controlled to refrigerate the target compartment. Defrosting can be performed when the amount of frost on the evaporator is sufficient and is about to affect the temperature inside the compartment, so as to achieve accurate defrosting.

[0124] Next, when the first change trend does not satisfy the first preset condition, the final temperature of the evaporator within the first preset time period and the second change trend satisfies the second preset condition, how the control component controls the refrigeration system to cool the target compartment is described:

[0125] In a possible implementation, the control component may start the compressor and increase the speed of the compressor to a third speed, and control the compressor to operate at the third speed until the temperature of the target compartment returns to normal.

[0126] In another possible implementation, the control component can turn on the compressor and the fan, increase the speed of the compressor to the third speed, increase the speed of the fan to the fourth speed, control the compressor to operate at the third speed, and control the fan to operate at the fourth speed until the temperature of the target compartment returns to normal.

[0127] Among them, the third speed of the compressor may be the same as the first speed or may be different, and this application does not impose any limitation on this.

[0128] Next, when the first change trend satisfies the first preset condition, and the final temperature of the evaporator within the first preset time period and the second change trend does not satisfy the second preset condition, the control component may process in the following manner:

[0129] In one possible implementation, when the control component determines that the first change trend satisfies the first preset condition, and the final temperature of the evaporator within the first preset time period and the second change trend do not satisfy the second preset condition, the control component can obtain the time when the defrost mode was last turned on, as well as the current time, and determine whether the time from the time when the defrost mode was last turned on to the current time is greater than the preset time threshold. If so, the defrost mode can be turned on to defrost the evaporator.

[0130] In another possible implementation, Figure 8 A flowchart of another refrigerator defrosting control method provided in an embodiment of the present application is provided. The method can be executed by a control component of the refrigerator, such as Figure 7 As shown, the method comprises the following steps:

[0131] S801. Within a second preset time period after the compressor is turned on, obtain a plurality of third temperature change rates and a final temperature of the evaporator within the second preset time period.

[0132] S802: Determine a third change trend of a plurality of third temperature change rates.

[0133] For the third change trend of the plurality of third temperature change rates, reference may be made to the plurality of second temperature change rates in the above embodiment, which will not be described in detail herein.

[0134] S803: Whether the final temperature of the evaporator within the second preset time period is above a preset threshold, and whether the third change trend satisfies the second preset change trend.

[0135] If both conditions are met at the same time, it means that the final temperature of the evaporator within the second preset time period and the third change trend meet the second preset condition.

[0136] If not, it is determined that the evaporator is blocked by frost, that is, the amount of frost is large, and S804 can be executed. If so, the refrigeration system can be controlled to stop refrigeration for the target compartment.

[0137] S804, determine to start the defrost mode.

[0138] In this embodiment, when the temperature change rate of the compartment satisfies the first preset change trend, and the final temperature of the evaporator within the second preset time and the third change trend do not meet the second preset condition, the refrigeration of the compartment can be accelerated to determine whether the evaporator is blocked by frost. When it is determined that the evaporator is blocked by frost, the defrost mode is turned on.

[0139] Next, for a single-system refrigerator, that is, when the refrigeration system refrigerates multiple compartments, how the control component determines the target compartment is described:

[0140] Fig. 9 A flowchart of another refrigerator defrosting control method provided in an embodiment of the present application is provided. The method can be executed by a control component of the refrigerator, such as Fig. 9 As shown, the method comprises the following steps:

[0141] S901. When the refrigeration system stops refrigeration, obtain a first temperature of the refrigerating chamber, a second temperature of the freezing chamber, and a third temperature of the temperature changing chamber.

[0142] When the refrigeration system stops refrigeration, the control component can obtain a first temperature of the refrigerating chamber, a second temperature of the freezing chamber, and a third temperature of the variable temperature chamber. For example, the first temperature may be a temperature value detected by a temperature sensor disposed in the refrigerating chamber, the second temperature may be a temperature value measured by a temperature sensor disposed in the freezing chamber, and the third temperature may be a temperature value measured by a temperature sensor disposed in the variable temperature chamber.

[0143] In a possible implementation, when the refrigeration system stops refrigeration, the control component may send a measurement request to the temperature sensor of each compartment, and after the temperature sensor of each compartment measures a corresponding temperature value, it sends the corresponding temperature value to the control component.

[0144] S902: Determine a target compartment according to the first temperature, the second temperature, and the third temperature.

[0145] Exemplarily, the control component may determine a maximum value among the first temperature, the second temperature, and the third temperature, and determine a compartment corresponding to the maximum value as a target compartment.

[0146] In this embodiment, if the refrigerator is a single-system refrigerator, when controlling the defrosting of the evaporator, it can be determined whether to turn on the defrosting mode according to the temperature change rate of the compartment with the highest temperature.

[0147] In a possible implementation, after the defrost mode is turned on, the control component can output a prompt message, where the prompt message is used to remind the user that the current temperature of the refrigerator is high.

[0148] In another possible implementation, the control component may output a prompt message in the following manner after the defrost mode is turned on for the third preset time:

[0149] Fig.10 A flowchart of another refrigerator defrosting control method provided in an embodiment of the present application is provided. The method can be executed by a control component of the refrigerator, such as Fig.10 As shown, the method comprises the following steps:

[0150] S1001. When the defrost mode is turned on for a third preset time, obtaining a fourth temperature of the target compartment.

[0151] When the defrost mode is turned on for the third preset time, the control component can obtain the fourth temperature of the target temperature at this time.

[0152] S1002: Determine whether the fourth temperature is greater than a preset startup temperature of the target compartment.

[0153] If yes, then S1003 is executed. If no, it means that the temperature of the target compartment is normal and no prompt information is output.

[0154] The preset startup temperature is the temperature threshold at which the target compartment is automatically cooled.

[0155] S1003. Output prompt information.

[0156] The prompt message is used to remind the user that the current refrigerator temperature is high. For example, the prompt message may be "The current refrigerator temperature is high, please do not put in hot food" or "The current refrigerator temperature is high, please reduce the number of times you open the door", which can make the refrigerator run in a better state.

[0157] Exemplarily, the control component may output prompt information in the following ways:

[0158] Method 1: Sending an alarm through a related device, such as a buzzer, a flashing light, a voice playback device, etc.

[0159] Method 2: Output prompt information through the display panel.

[0160] Mode 3: Sending prompt information to the user's terminal device through a communication module. The communication module may be, for example, Wireless Fidelity (WIFI) or other communication modules, which is not limited in the present application.

[0161] In this embodiment, after the defrost mode is turned on, the user can be prompted according to the temperature of the compartment, so that when the temperature of the refrigerator is high, the user can avoid putting in hotter food and reduce the number of times the refrigerator door is opened, so that the refrigerator can operate in a better state.

[0162] The present application also provides a computer-readable storage medium, which may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes. Specifically, the computer-readable storage medium stores computer execution instructions, which are used to implement the technical solution shown in the above method embodiment when executed by a computer.

[0163] The present application also provides a program product, which includes execution instructions stored in a readable storage medium. When the computer program is executed by a computer, the technical solution shown in the above method embodiment is executed. The specific implementation method and technical effect are similar and will not be repeated here.

[0164] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0165] For ease of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are intended to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

[0166] In this application, "at least one" means one or more. "Multiple" means two or more. The first, second, etc. descriptions that appear in the embodiments of this application are only used for illustration and distinction of the described objects. There is no order, nor does it represent a special limitation on the number of devices in the embodiments of this application, and cannot constitute any limitation on the embodiments of this application. For example, the first threshold and the second threshold are only for distinguishing different thresholds, and do not represent the difference in size, priority or importance of the two thresholds.

[0167] In this application, "exemplary", "in some embodiments", "in other embodiments", etc. are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" in this application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present concepts in a concrete way.

[0168] In this application, "of", "corresponding, relevant", "corresponding", and "associated" can sometimes be used interchangeably. It should be noted that when the distinction is not emphasized, the meanings they express are consistent. In the embodiments of this application, communication and transmission can sometimes be used interchangeably. It should be noted that when the distinction is not emphasized, the meanings they express are consistent. For example, transmission can include sending and / or receiving, which can be a noun or a verb.

[0169] In this application, "equal to" can be used in conjunction with "less than" or "greater than", but not with both "less than" and "greater than". When "equal to" is used in conjunction with "less than", it is applicable to the technical solution adopted by "less than". When "equal to" is used in conjunction with "greater than", it is applicable to the technical solution adopted by "greater than".

Claims

1. A refrigerator, characterized in that: The refrigerator comprises: A box body, wherein a storage chamber is provided in the box body, and the storage chamber includes at least one of a refrigerating chamber, a freezing chamber, and a temperature-changing chamber; A refrigeration system arranged in the box includes a compressor and an evaporator, wherein the compressor is used to provide power for the refrigeration cycle of the refrigerator, and the evaporator is used to provide cold capacity for the refrigerator; The control component is configured as follows: Acquiring a plurality of first temperature change rates of the target compartment and a plurality of second temperature change rates of the evaporator within a first preset time period from when the refrigeration system starts refrigeration to when it stops refrigeration; According to the plurality of first temperature change rates and the plurality of second temperature change rates, it is determined whether to start a defrost mode, wherein the defrost mode is used to remove a frost layer on the evaporator.

2. The refrigerator according to claim 1, characterized in that: The control component is configured to: Determining a first change trend of the plurality of first temperature change rates and a second change trend of the plurality of second temperature change rates; Whether to turn on the defrost mode is determined according to the first change trend and the second change trend.

3. The refrigerator according to claim 2, characterized in that: The refrigerator further includes a fan, wherein the fan is configured to send air into the evaporator for heat exchange and send the heat-released air into the target compartment; The control component is configured to: Acquiring a final temperature of the evaporator within the first preset time period; Determine whether the first change trend does not satisfy a first preset condition, and whether the final temperature and the second change trend do not satisfy a second preset condition; the first preset condition includes a first preset change trend, the first preset change trend is a preset change trend of the temperature change rate of the target compartment, the second preset condition includes a second preset change trend, and the final temperature of the evaporator within the first preset time is above a preset threshold, wherein the second preset change trend is a preset change trend of the temperature change rate of the compressor; If yes, then determine to turn on the defrost mode; If not, determining whether the first change trend satisfies the first preset condition; If the first change trend satisfies the first preset condition, the compressor and the fan are turned on, and the speed of the compressor is increased to a first speed, and the speed of the fan is increased to a second speed; according to a plurality of third temperature change rates of the evaporator within a second preset time after the compressor is turned on, it is determined whether to turn on the defrost mode; If the first change trend does not satisfy the first preset condition, the refrigeration system is controlled to cool the target compartment.

4. The refrigerator according to claim 3, characterized in that: The control component is configured to: within a second preset time after the compressor is turned on, obtaining the plurality of third temperature change rates and a final temperature of the evaporator within the second preset time; determining a third change trend of the plurality of third temperature change rates; Determining whether the final temperature of the evaporator within the second preset time period is above the preset threshold, and whether the third change trend satisfies the second preset change trend; If not, it is determined to start the defrost mode.

5. The refrigerator according to claim 3, characterized in that: The control component is configured to: If the first change trend does not satisfy the first preset condition, and the final temperature and the second change trend satisfy the second preset condition, turning on the compressor and the fan, and increasing the speed of the compressor to a third speed, and increasing the speed of the fan to a fourth speed; The compressor is controlled to operate at the third speed and the fan is controlled to operate at the fourth speed to cool the target room.

6. The refrigerator according to claim 1, characterized in that: If the storage room includes a refrigerating room, a freezing room, and a temperature-changing room, and the refrigeration system cools the refrigerating room, the freezing room, and the temperature-changing room at the same time; the control component is configured as follows: When the refrigeration system stops refrigeration, obtaining a first temperature of the refrigerating chamber, a second temperature of the freezing chamber, and a third temperature of the temperature changing chamber; The target compartment is determined according to the first temperature, the second temperature and the third temperature.

7. The refrigerator according to any one of claims 1 to 5, characterized in that: The refrigerator further comprises a first temperature sensor and a second temperature sensor; The first temperature sensor is disposed in the target compartment and is configured to detect the temperature of the target compartment; The second temperature sensor is disposed at one side of the evaporator and is configured to detect the temperature of the evaporator.

8. The refrigerator according to any one of claims 1 to 7, characterized in that: The control component is configured to: When the defrost mode is turned on for a third preset time, obtaining a fourth temperature of the target compartment; If the fourth temperature is greater than the preset startup temperature of the target compartment, a prompt message is output, where the prompt message is used to prompt the user that the current temperature of the refrigerator is high.

9. A defrosting control method for a refrigerator, characterized in that: The refrigerator comprises: A box body, wherein a storage chamber is provided in the box body, and the storage chamber includes at least one of a refrigerating chamber, a freezing chamber, and a temperature-changing chamber; A refrigeration system arranged in the box includes a compressor and an evaporator, wherein the compressor is used to provide power for the refrigeration cycle of the refrigerator, and the evaporator is used to provide cold capacity for the refrigerator; The method comprises: Acquiring a plurality of first temperature change rates of the target compartment and a plurality of second temperature change rates of the evaporator within a first preset time period from when the refrigeration system starts refrigeration to when it stops refrigeration; According to the plurality of first temperature change rates and the plurality of second temperature change rates, it is determined whether to start a defrost mode, wherein the defrost mode is used to remove a frost layer on the evaporator.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, the method of claim 9 is implemented.

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