Method and device for controlling temperature rise during defrosting of air-cooled refrigerator

Abstract

The present invention discloses a method and device for controlling the temperature rise of an air-cooled refrigerator during defrosting, comprising: when detecting that the refrigerator has been running continuously for a first specified time, controlling the generation of a defrost instruction without pre-cooling; when detecting that the freezing sensor has reached a shutdown point, the compressor is stopped, and the freezing fan is operated for a second specified time, controlling the defrost heating wire to start working and formally starting defrosting; during the defrosting process, real-time detecting the freezing and defrosting sensor temperature tFD; when detecting that the freezing and defrosting sensor temperature tFD is greater than or equal to 0°C, controlling the defrost heating wire to disconnect and exit the first defrosting cycle; during the first two defrosting cycles, if tFD is greater than or equal to 0°C, controlling the defrost heating wire to disconnect and exit defrosting; during the third defrosting cycle, if tFD is greater than or equal to 10°C, controlling the defrost heating wire to disconnect and exit defrosting; following this cycle, ensuring that the heat load brought into the compartment by the evaporator bin during defrosting is reduced, making the local temperature change of each refrigeration compartment gentle, which is beneficial to the preservation of food, while reducing the defrosting time and reducing the overall energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerator defrosting control, and in particular to a method and device for controlling the temperature rise of an air-cooled refrigerator during defrosting, an intelligent refrigerator, and a storage medium. Background Art

[0002] With the development of electronic technology and the continuous improvement of people's living standards, the use of various smart home appliances such as smart refrigerators has become more and more popular. Smart refrigerators have become an indispensable food preservation tool in people's lives.

[0003] The current defrost control rules for air-cooled refrigerators are as follows: 1) The refrigerator defrosts for 24 hours (after one compressor on-off cycle, it enters a no-precooling defrost). During this period, if the compressor runs continuously for 12 hours, it is forced to shut down for 15 minutes. 2) Before defrosting, the compressor and refrigeration fan operate until the refrigeration sensor reaches the shutdown point. After the compressor stops, the refrigeration fan runs for 3 minutes before the defrost heater is connected. 3) After entering the defrost state, the freezer and refrigerator compartments do not cool, the compressor stops, the refrigeration fan stops, and the damper closes. When the freezer defrost sensor temperature tFD ≥ 10°C, the defrost heater disconnects, and defrost exits.

[0004] The defrosting method of the existing air-cooled refrigerator has the problem that the heat load brought into the compartment by the evaporator during the defrosting time is relatively large, which easily causes excessive local temperature changes in each refrigeration compartment, which is not conducive to food preservation. At the same time, the defrosting time is also long, and the overall energy consumption cannot be reduced.

[0005] Therefore, the existing technology still needs to be improved and developed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is that, in response to the above-mentioned defects of the prior art, a method and device for controlling the temperature rise of an air-cooled refrigerator during defrosting is provided. The present invention ensures that the heat load brought into the compartment by the evaporator bin during defrosting is reduced, so that the local temperature changes in each refrigeration compartment are gentle, which is beneficial to the preservation of food. At the same time, the defrosting time is shortened, the overall energy consumption is reduced, and convenience is provided for users.

[0007] The technical solutions adopted by the present invention to solve the problem are as follows:

[0008] A method for controlling temperature rise during defrosting of an air-cooled refrigerator, comprising:

[0009] Detect the continuous operation time of the refrigerator;

[0010] When the refrigerator is detected to have been running continuously for the first specified time, the control generates a defrost instruction without pre-cooling;

[0011] When receiving the defrost command without pre-cooling, it enters the pre-defrost work. When it detects that the refrigeration sensor has reached the shutdown point, the compressor stops, and the refrigeration fan runs for a second specified time, then the defrost heating wire is controlled to start working, and defrost is officially started.

[0012] During the defrosting process, the freezer defrost sensor temperature tFD is detected in real time;

[0013] When the defrost sensor temperature tFD is detected to be ≥ 0°C, the defrost heating wire is controlled to be disconnected and the first defrost cycle is exited.

[0014] The method for controlling the temperature rise of an air-cooled refrigerator during defrosting, wherein, during the defrosting process, the freezer defrost sensor temperature tFD is detected in real time, and when the freezer defrost sensor temperature tFD is detected to be ≥ 0°C, the defrost heating wire is controlled to be disconnected, and the defrost is exited. The method further includes:

[0015] When the refrigerator is detected to have exited the first defrost cycle, the refrigerator is controlled to continue operating;

[0016] Controlling the refrigerator to run again for the first specified time and then enter a second defrost cycle;

[0017] When the refrigerator is in the second defrost cycle, if the freezer defrost sensor temperature tFD is detected to be ≥ 0°C, the defrost heating wire is controlled to be disconnected, and the second defrost cycle is exited.

[0018] The method for controlling the temperature rise of an air-cooled refrigerator during defrosting, wherein when the refrigerator is in the second defrosting cycle, detecting that the freezer-defrosting sensor temperature tFD is ≥ 0°C, then controlling the defrosting heating wire to be disconnected and exiting the second defrosting cycle further comprises:

[0019] When the refrigerator is detected to have exited the second defrost cycle, the refrigerator is controlled to continue operating;

[0020] Controlling the refrigerator to run again for the first specified time and then enter a third defrost cycle;

[0021] When the refrigerator is in the third defrost cycle, if the freezer defrost sensor temperature tFD is detected to be ≥10°C, the defrost heating wire is controlled to be disconnected, and the third defrost cycle is exited.

[0022] The method for controlling the temperature rise of an air-cooled refrigerator during defrosting, wherein when the refrigerator is in the third defrost cycle, detecting that the freezer defrost sensor temperature tFD is ≥ 10°C, then controlling the defrost heating wire to disconnect and exiting the third defrost cycle further comprises:

[0023] When the refrigerator is detected to have exited the third defrost cycle, the refrigerator is controlled to continue operating;

[0024] After controlling the refrigerator to run for the first designated time again, the refrigerator is controlled to execute the first defrost cycle, the second defrost cycle, and the third defrost cycle in sequence.

[0025] The method for controlling the temperature rise of an air-cooled refrigerator during defrosting, wherein the step of controlling the generation of a defrost instruction without pre-cooling when detecting that the refrigerator has been running continuously for a specified time comprises:

[0026] The first designated time is 20 hours. When it is detected that the refrigerator has been running continuously for 20 hours, the control generates a defrost instruction without pre-cooling.

[0027] The method for controlling the temperature rise of an air-cooled refrigerator during defrosting, wherein the step of controlling the generation of a defrost instruction without pre-cooling when detecting that the refrigerator has been running continuously for a first specified time comprises:

[0028] When it is detected that the refrigerator has been running continuously for the first specified time, the control generates a no-precooling defrost instruction, and the compressor is in a natural shutdown process.

[0029] The method for controlling the temperature rise of an air-cooled refrigerator during defrosting, wherein the steps of: upon receiving a defrost command without pre-cooling, entering pre-defrosting operation, detecting that the freezing sensor has reached a shutdown point, stopping the compressor, and operating the freezing fan for a second specified time, and officially starting defrosting by controlling the defrost heating wire to start working, include:

[0030] The second designated time is 3 minutes. When a defrost command without pre-cooling is received, the pre-defrost operation is entered. When the refrigeration sensor is detected to have reached the shutdown point, the compressor naturally shuts down. After the refrigeration fan has been running for 3 minutes, the defrost heating wire is controlled to start working, and defrost is officially started.

[0031] A device for controlling temperature rise during defrosting of an air-cooled refrigerator, wherein the device comprises:

[0032] A detection module, used to detect the continuous operation time of the refrigerator;

[0033] a defrost instruction generating module, configured to control and generate a defrost instruction without pre-cooling when detecting that the refrigerator has been running continuously for a first specified time;

[0034] The pre-defrost detection module is used to enter the pre-defrost work when receiving the defrost command without pre-cooling. When it detects that the refrigeration sensor has reached the shutdown point, the compressor stops, and the refrigeration fan runs for a specified second, it controls the defrost heating wire to start working and officially starts defrosting;

[0035] Temperature detection module, used to detect the freezer defrost sensor temperature tFD in real time during the defrost process;

[0036] The first defrost cycle module is used to control the defrost heating wire to disconnect and exit the first defrost cycle when the freezer defrost sensor temperature tFD is detected to be ≥ 0°C;

[0037] The second defrost cycle module is used to control the refrigerator to continue running when it is detected that the refrigerator has exited the first defrost cycle; control the refrigerator to run again for the first specified time and then enter the second defrost cycle; when the refrigerator is in the second defrost cycle, if the freezer defrost sensor temperature tFD is detected to be ≥ 0°C, control the defrost heating wire to be disconnected and exit the second defrost cycle;

[0038] The third defrost cycle module is used to control the refrigerator to continue running when it is detected that the refrigerator has exited the second defrost cycle; control the refrigerator to run again for the first specified time and then enter the third defrost cycle; when the refrigerator is in the third defrost cycle, it detects that the freezer defrost sensor temperature tFD≥10℃, then controls the defrost heating wire to disconnect and exit the third defrost cycle.

[0039] A smart refrigerator comprises a memory and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by one or more processors, including the method for executing any one of the methods described.

[0040] A non-transitory computer-readable storage medium, wherein when instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to perform any one of the methods described above.

[0041] The beneficial effects of the present invention are as follows: a method and device for controlling the temperature rise of an air-cooled refrigerator during defrosting, comprising: detecting the continuous operation time of the refrigerator; when it is detected that the refrigerator has been running continuously for a first specified time, controlling the generation of a no-pre-cooling defrost instruction; when the no-pre-cooling defrost instruction is received, entering pre-defrosting operation, and when it is detected that the freezing sensor has reached the shutdown point, the compressor is stopped, and the freezing fan is operated for a second specified time, controlling the defrost heating wire to start working, and formally starting defrosting; during the defrosting process, real-time detecting the freezing defrost sensor temperature tFD; when it is detected that the freezing defrost sensor temperature tFD ≥ 0°C, controlling the defrost heating wire to disconnect, and exiting the first defrost cycle. In the first two defrost cycles, if tFD≥0℃, the defrost heating wire is disconnected and defrost is exited; in the third defrost cycle, if tFD≥10℃, the defrost heating wire is disconnected and defrost is exited; in the fourth and fifth defrost cycles, if tFD≥0℃, the defrost heating wire is disconnected and defrost is exited; in the sixth defrost cycle, if tFD≥10℃, the defrost heating wire is disconnected and defrost is exited; this cycle ensures that the heat load brought into the compartment by the evaporator bin is reduced at the time of defrost, so that the local temperature change of each refrigeration compartment is gentle, which is beneficial to the preservation of food, while reducing the defrost time and reducing the overall energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention 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, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0043] Figure 1 The present invention is a schematic diagram of a refrigerator defrosting control process in the prior art.

[0044] Figure 2 It is a flow chart of a method for controlling the temperature rise of an air-cooled refrigerator during defrosting provided in Example 1 of the present invention.

[0045] Figure 3 This is a flow chart of a method for controlling the temperature rise of an air-cooled refrigerator during defrosting provided in Example 2 of the present invention.

[0046] Figure 4 This is a principle block diagram of a device for controlling temperature rise during defrosting of an air-cooled refrigerator provided by an embodiment of the present invention.

[0047] Figure 5 This is a block diagram of the internal structure of the smart refrigerator provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the present invention more clear and distinct, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0049] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0050] Refrigerator defrosting works by increasing the internal temperature of the refrigerator using the ice layer on the evaporator. This is because ice has a lower thermal conductivity than air, causing the temperature to change more slowly, ultimately raising the internal temperature. Therefore, a defrost device is needed to melt the ice inside the refrigerator to allow it to function properly. There are two main defrosting mechanisms: manual defrosting and automatic defrosting. Manual defrosting requires the user to manually turn off the refrigerator, disassemble the interior, and use a tool like a hair dryer to melt the ice. Automatic defrosting, on the other hand, uses the principle of refrigerant and water vapor discharge to melt the ice.

[0051] The defrosting control process of the air-cooled refrigerator in the prior art is as follows: Figure 1 As shown, the following steps are included:

[0052] Step S10: The refrigerator runs for 24 hours for defrosting (after one cycle of the compressor starting and stopping, it enters the defrosting mode without pre-cooling). During this period, step S11 is executed synchronously: when the compressor runs continuously for 12 hours, it is forced to stop for 15 minutes.

[0053] Step S20. Work before defrosting. Before defrosting, the compressor and the refrigeration fan run until the refrigeration sensor reaches the shutdown point. After the compressor stops, the refrigeration fan runs for 3 minutes before turning on the defrost heating wire.

[0054] Step S30. Defrosting (defrosting heater working);

[0055] After entering the defrost state, the freezer and refrigerator compartments will not refrigerate, the compressor will stop, the freezer fan will stop, and the damper will close.

[0056] Step S40: Detect the temperature of the freezer and defrost sensor tFD. When the temperature of the freezer and defrost sensor tFD is greater than or equal to 10°C, the defrost heating wire is disconnected and the defrost process is terminated.

[0057] Thus, the defrosting method of the conventional air-cooled refrigerator has the problem that the heat load brought into the compartment by the evaporator bin during the defrosting time is relatively large, which easily causes excessive local temperature changes in each refrigeration compartment, which is not conducive to food preservation. At the same time, the defrosting time is also long, and the overall energy consumption cannot be reduced.

[0058] In order to solve the problems of the prior art, the present invention provides a method for controlling the temperature rise of an air-cooled refrigerator during defrosting, thereby ensuring that the heat load brought into the compartment by the evaporator bin during defrosting is reduced, so that the local temperature changes in each refrigeration compartment are gentle, which is beneficial to the preservation of food, while reducing the defrosting time and reducing overall energy consumption.

[0059] Exemplary Methods

[0060] like Figure 2 As shown in , an embodiment of the present invention provides a method for controlling the temperature rise of an air-cooled refrigerator during defrosting. The method can be applied to a smart refrigerator. In an embodiment of the present invention, the method includes the following steps:

[0061] Step S110, detecting the continuous operation time of the refrigerator;

[0062] In the embodiment of the present invention, an air-cooled refrigerator is taken as an example for description. When the refrigerator is running, the continuous running time of each defrost cycle of the refrigerator is detected.

[0063] Step S120: When it is detected that the refrigerator has been running continuously for a first specified time, the control generates a defrost instruction without pre-cooling;

[0064] In an embodiment of the present invention, when it is detected that the refrigerator has been running continuously for a first specified time, the control generates a no-pre-cooling defrost instruction. The so-called no-pre-cooling means that during the continuous operation of the refrigerator, the compressor does not forcibly stop for pre-cooling, but directly runs for the first specified time before entering the defrost process. Preferably, the present invention adopts the first specified time as 20 hours, which can prevent excessive frost accumulation in the refrigerator. In an embodiment of the present invention, when it is detected that the refrigerator has been running continuously for 20 hours, the control generates a no-pre-cooling defrost instruction; then, instead of immediately controlling the compressor to forcibly stop, the compressor is controlled to enter a natural shutdown process, which can effectively protect the refrigerator's compression and extend the service life of the compressor.

[0065] Then proceed to step S130,

[0066] Step S130: When receiving the defrost command without pre-cooling, the system enters the pre-defrost operation. When the freezing sensor is detected to have reached the shutdown point, the compressor is stopped, and the freezing fan is operated for a second specified time, the defrost heating wire is controlled to start working, and the defrost is officially started.

[0067] In this embodiment of the present invention, when a defrost command without pre-cooling is received and the refrigerator enters pre-defrost mode, the compressor does not immediately shut down. Instead, it detects whether the freeze sensor has reached the shutdown point. Only when the freeze sensor reaches the shutdown point does the compressor shut down, essentially allowing the compressor to naturally shut down. The freezer fan then runs for a specified second, then controls the defrost heater to activate, officially initiating defrost.

[0068] The freezer sensor's on / off point is related to the refrigerator's freezer settings. For example, if the freezer setting is -18 degrees Celsius, the freezer's on / off point is -18 degrees Celsius and the freezer's off / on point is -20 degrees Celsius. When the freezer temperature reaches the on / off point, the compressor starts; when the freezer temperature reaches the off / off point, the compressor stops.

[0069] Preferably, the second designated time is 3 minutes. That is, when a defrost command without pre-cooling is received, the pre-defrost process begins. When the freeze sensor detects that the freeze sensor has reached its shutdown point, the compressor naturally shuts down. The freezer fan operates for 3 minutes before the defrost heater is activated, officially initiating defrost. This allows the compressor's cooling capacity to be fully released and, after the freezer fan operates for 3 minutes, the cooling capacity is fully mixed and transferred to the refrigerator compartment. The defrost heater is then activated to begin defrosting.

[0070] Step S140: During the defrosting process, the freezer-defrost sensor temperature tFD is detected in real time;

[0071] In the embodiment of the present invention, during the defrosting process when the defrosting heater is activated, the temperature tFD of the freezing and defrosting sensor is detected in real time;

[0072] Step S150: When the temperature of the freeze / defrost sensor tFD is detected to be ≥ 0°C, the defrost heating wire is controlled to be disconnected, and the first defrost cycle is exited.

[0073] In this embodiment of the present invention, when the defrost sensor temperature tFD is detected to be ≥ 0°C, the defrost heater is disconnected, exiting the first defrost cycle. This allows the refrigerator to slowly defrost as the heater heats the refrigerator from negative temperatures. This allows for slow defrosting in the first defrost cycle without causing the refrigerator compartment to heat up immediately, facilitating food storage in the refrigerator compartment.

[0074] In a further embodiment of the present invention, the method for controlling the temperature rise of an air-cooled refrigerator during defrosting, wherein, in step S150, during the defrosting process, the freezer-defrost sensor temperature tFD is detected in real time, and when the freezer-defrost sensor temperature tFD is detected to be ≥ 0°C, the defrost heating wire is controlled to be disconnected, and the defrost is exited, further comprising:

[0075] When the refrigerator is detected to have exited the first defrost cycle, the refrigerator is controlled to continue to operate and perform normal refrigeration operation; when the refrigerator is controlled to operate again for the first specified time, for example, 20 hours, the refrigerator is controlled to generate a defrost instruction without pre-cooling;

[0076] When receiving the defrost command without pre-cooling, it enters the pre-defrost work. When it detects that the refrigeration sensor reaches the shutdown point, the compressor stops, and the refrigeration fan runs for 3 minutes before controlling the defrost heating wire to start working, officially starting the defrost and entering the second defrost cycle;

[0077] When the refrigerator is in the second defrost cycle, the freezer defrost sensor temperature tFD is detected in real time. When the freezer defrost sensor temperature tFD is detected to be ≥ 0°C, the defrost heating wire is controlled to be disconnected, and the second defrost cycle is exited.

[0078] Furthermore, after the step of detecting that the freezer-defrost sensor temperature tFD is ≥ 0° C. when the refrigerator is in the second defrost cycle, the method further includes:

[0079] When the refrigerator is detected to have exited the second defrost cycle, the refrigerator is controlled to continue operating;

[0080] After the refrigerator is controlled to run for the first designated time again, it enters the third defrost cycle; that is, when the refrigerator continues to run after the second defrost cycle, if it is detected that the refrigerator has been running continuously for 20 hours, the control generates a no-pre-cooling defrost instruction; when the no-pre-cooling defrost instruction is received, it enters the pre-defrost operation, and when it is detected that the freezing sensor reaches the shutdown point, the compressor stops, and the freezing fan runs for the second designated time, the defrost heating wire is controlled to start working, and the third defrost cycle is officially started;

[0081] Then, when the refrigerator is in the third defrost cycle, if the temperature of the freezer defrost sensor tFD is detected to be greater than or equal to 10°C, the defrost heating wire is controlled to be disconnected, and the third defrost cycle is exited. The present invention controls the defrost heating wire to be disconnected only when the temperature of the freezer defrost sensor tFD is detected to be greater than or equal to 10°C in the third defrost cycle. In this way, the frost in the refrigerator can be basically completely cleared, achieving a better defrost effect.

[0082] The method for controlling the temperature rise of an air-cooled refrigerator during defrosting, wherein when the refrigerator is in the third defrost cycle, detecting that the freezer defrost sensor temperature tFD is ≥ 10°C, then controlling the defrost heating wire to disconnect and exiting the third defrost cycle further comprises:

[0083] When the refrigerator is detected to have exited the third defrost cycle, the refrigerator is controlled to continue operating;

[0084] After controlling the refrigerator to run for the first designated time again, the refrigerator is controlled to execute the first defrost cycle, the second defrost cycle, and the third defrost cycle in sequence.

[0085] That is, the embodiment of the present invention optimizes the control rules for the defrost mode of an air-cooled refrigerator, adopting the following methods: 1) the refrigerator is defrosted after 20 hours of continuous operation (after one cycle of compressor on-off, it enters the defrost mode without pre-cooling), and the condition of the compressor running continuously for 12 hours and forced to stop for 15 minutes is canceled; 2) the operation before defrosting is the same as before; 3) the refrigerator enters the defrost mode after 20 hours of operation, and the temperature of the freezer defrost sensor tFD is detected. If tFD ≥ 0°C in the first two defrost cycles, the defrost heating wire is disconnected and defrost is exited; in the third defrost cycle tFD ≥10℃, the defrost heating wire is disconnected and defrost is exited; in the 4th and 5th defrost cycles, tFD≥0℃, the defrost heating wire is disconnected and defrost is exited. In the 6th defrost cycle, tFD≥10℃ (the 4th-5th-6th defrost cycles are repeated 1st-2nd-3rd defrost cycles), the defrost heating wire is disconnected and defrost is exited; this cycle ensures that the heat load brought into the compartment by the evaporator bin is reduced at the time of defrost, so that the local temperature change of each refrigeration compartment is gentle, which is beneficial to the preservation of food, while reducing the defrost time and reducing the overall energy consumption.

[0086] like Figure 3 As shown, the method for controlling the temperature rise of an air-cooled refrigerator during defrosting provided by Example 2 of the present invention includes the following steps:

[0087] Step S101: The refrigerator starts defrosting after running for 20 hours (after one cycle of the compressor starting and stopping, it enters the defrosting mode without pre-cooling);

[0088] In this way, the present invention cancels the condition that the compressor runs continuously for 12 hours and is forced to stop for 15 minutes.

[0089] Step S102: Before defrosting, the compressor and the refrigeration fan are operated until the refrigeration sensor reaches the shutdown point. After the compressor stops, the refrigeration fan is operated for 3 minutes before the defrost heating wire is turned on.

[0090] Step S103: formally enter the defrost process and control the defrost heater to start working;

[0091] Step S104: Detect the defrost sensor temperature (tFD). When tFD ≥ 0°C, exit defrosting (the defrost exit temperature for the first and second cycles is 0°C, and the defrost exit temperature for the third cycle is 10°C).

[0092] That is, in the embodiment of the present invention, the refrigerator enters defrosting after running for 20 hours, and the temperature tFD of the freezer defrost sensor is detected. If tFD ≥ 0°C in the first two defrost cycles, the defrost heating wire is disconnected and the defrost is exited; if tFD ≥ 10°C in the third defrost cycle, the defrost heating wire is disconnected and the defrost is exited; if tFD ≥ 0°C in the fourth and fifth defrost cycles, the defrost heating wire is disconnected and the defrost is exited; if tFD ≥ 10°C in the sixth defrost cycle, the defrost heating wire is disconnected and the defrost is exited; this cycle ensures that the heat load brought into the compartment by the evaporator bin at the time of defrosting is reduced, so that the local temperature change of each refrigeration compartment is gentle, which is beneficial to the preservation of food, while reducing the defrost time and reducing the overall energy consumption.

[0093] It can be seen from the above embodiments that the present invention has the following advantages compared with the prior art:

[0094] 1) Reduced energy consumption for defrosting refrigerators: Because: the defrosting procedure of the existing technology before the change is: at high temperature, the compressor runs for 12 hours and still does not reach the stop point of the freezing sensor, and is directly forced to stop for 15 minutes. During the shutdown, the freezing chamber does not refrigerate and the freezing temperature rises. Then the compressor runs for another 12 hours and still cannot meet the stop point of the freezing sensor, and is forced to stop again, meeting the 24-hour defrosting requirement, which is equivalent to the compressor running for 24 hours between two defrosting times.

[0095] The present invention has been modified to adopt the following approach: at high temperatures, the condition of forced shutdown of the compressor for 15 minutes after running for 12 hours is cancelled, that is, the compressor continues to run until the shutdown point of the refrigeration sensor is met, and the compressor defrosts after stopping. This shortens the entire defrost time, which is equivalent to the compressor running for 21.3 hours (1279 minutes) between two defrosts. Compared with before, the compressor running time is shortened, so the energy consumption is reduced.

[0096] 2) The present invention can reduce the heat load brought into the freezer compartment by the evaporator during defrosting; because: the existing technology before the present invention has an exit temperature of 10°C during defrosting (the freezer defrost sensor detects that the temperature is greater than 10 degrees and disconnects the defrost heater). The heater has to work for 35 minutes during defrosting, and the temperature in the evaporator compartment continues to rise and heat is transmitted to the freezer compartment through the air duct opening, which will cause the freezing temperature of the refrigerator to rise. Before the modification, the temperature rose by 3°C during defrosting, which is not conducive to the preservation of food in the refrigerator.

[0097] The solution of the present invention adopts: after the modification: the defrost exit temperature is 0°C (the defrost sensor detects that the temperature is greater than 0 degrees and disconnects the defrost heater), the defrost heater is turned on for 22.5 minutes, the temperature rise in the evaporator compartment is lower than the temperature at which the heater works for 35 minutes, the heat load brought into the freezer compartment is also reduced, and the freezing temperature rise is low.

[0098] Exemplary devices

[0099] like Figure 4 As shown in , an embodiment of the present invention provides a device for controlling the temperature rise of an air-cooled refrigerator during defrosting, the device comprising:

[0100] A detection module 510 is used to detect the continuous operation time of the refrigerator;

[0101] The defrost instruction generating module 520 is configured to control the generation of a defrost instruction without pre-cooling when detecting that the refrigerator has been running continuously for a first specified time;

[0102] The pre-defrost detection module 530 is used to enter the pre-defrost operation when receiving the no-pre-cooling defrost instruction. When it is detected that the refrigeration sensor has reached the shutdown point, the compressor is stopped, and the refrigeration fan is turned on for a second specified time, the defrost heating wire is controlled to start working, and the defrost is officially started;

[0103] The temperature detection module 540 is used to detect the freezer defrost sensor temperature tFD in real time during the defrosting process;

[0104] The first defrost cycle module 550 is used to control the defrost heating wire to be disconnected and exit the first defrost cycle when the defrost sensor temperature tFD is detected to be ≥ 0°C;

[0105] The second defrost cycle module 560 is used to control the refrigerator to continue operating when it is detected that the refrigerator has exited the first defrost cycle; control the refrigerator to enter the second defrost cycle after the refrigerator runs for the first specified time again; when the refrigerator is in the second defrost cycle, if the freezer defrost sensor temperature tFD is detected to be ≥ 0°C, control the defrost heating wire to disconnect and exit the second defrost cycle;

[0106] The third defrost cycle module 570 is used to control the refrigerator to continue running when it is detected that the refrigerator has exited the second defrost cycle; control the refrigerator to run again for the first specified time and then enter the third defrost cycle; when the refrigerator is in the third defrost cycle, it detects that the freezer defrost sensor temperature tFD≥10℃, then controls the defrost heating wire to disconnect and exit the third defrost cycle, as described above.

[0107] Based on the above embodiment, the present invention also provides a smart refrigerator, whose principle block diagram can be shown as follows: Figure 5 As shown. The smart refrigerator can be a smart TV including a processor, memory, network interface, display screen, and camera connected via a system bus. Among them, the processor of the smart refrigerator is used to provide computing and control capabilities. The memory of the smart refrigerator includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The network interface of the smart refrigerator is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for controlling the temperature rise of an air-cooled refrigerator during defrosting is implemented. The display screen of the smart refrigerator can be a liquid crystal display screen or an electronic ink display screen, and the camera of the smart refrigerator is pre-set inside the smart refrigerator.

[0108] Those skilled in the art will understand that Figure 5 The principle block diagram shown in the figure is only a block diagram of a partial structure related to the solution of the present invention, and does not constitute a limitation on the smart refrigerator to which the solution of the present invention is applied. A specific smart refrigerator may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0109] In one embodiment, a smart refrigerator is provided, comprising a memory and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by one or more processors, and include instructions for performing the following operations:

[0110] Detect the continuous operation time of the refrigerator;

[0111] When the refrigerator is detected to have been running continuously for the first specified time, the control generates a defrost instruction without pre-cooling;

[0112] When receiving the defrost command without pre-cooling, it enters the pre-defrost work. When it detects that the refrigeration sensor has reached the shutdown point, the compressor stops, and the refrigeration fan runs for a second specified time, then the defrost heating wire is controlled to start working, and defrost is officially started.

[0113] During the defrosting process, the freezer defrost sensor temperature tFD is detected in real time;

[0114] When the defrost sensor temperature tFD is detected to be ≥ 0°C, the defrost heating wire is controlled to be disconnected and the first defrost cycle is exited.

[0115] Wherein, during the defrosting process, the freezer defrost sensor temperature tFD is detected in real time, and when the freezer defrost sensor temperature tFD is detected to be ≥ 0°C, the defrost heating wire is controlled to be disconnected, and the defrosting step is followed by:

[0116] When the refrigerator is detected to have exited the first defrost cycle, the refrigerator is controlled to continue operating;

[0117] Controlling the refrigerator to run again for the first specified time and then enter a second defrost cycle;

[0118] When the refrigerator is in the second defrost cycle, if the freezer defrost sensor temperature tFD is detected to be ≥ 0°C, the defrost heating wire is controlled to be disconnected, and the second defrost cycle is exited.

[0119] Wherein, when the refrigerator is in the second defrost cycle, detecting that the freezer defrost sensor temperature tFD is ≥ 0°C, then controlling the defrost heating wire to be disconnected and exiting the second defrost cycle further includes:

[0120] When the refrigerator is detected to have exited the second defrost cycle, the refrigerator is controlled to continue operating;

[0121] Controlling the refrigerator to run again for the first specified time and then enter a third defrost cycle;

[0122] When the refrigerator is in the third defrost cycle, if the freezer defrost sensor temperature tFD is detected to be ≥10°C, the defrost heating wire is controlled to be disconnected, and the third defrost cycle is exited.

[0123] Wherein, when the refrigerator is in the third defrost cycle, detecting that the freezer defrost sensor temperature tFD is ≥10°C, then controlling the defrost heating wire to be disconnected and exiting the third defrost cycle further includes:

[0124] When the refrigerator is detected to have exited the third defrost cycle, the refrigerator is controlled to continue operating;

[0125] After controlling the refrigerator to run for the first designated time again, the refrigerator is controlled to execute the first defrost cycle, the second defrost cycle, and the third defrost cycle in sequence, as described above.

[0126] Those skilled in the art will appreciate that all or part of the processes in the above-described embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the above-described embodiments. Among them, any reference to memory, storage, database or other media used in the embodiments provided by the present invention can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct RAM bus dynamic RAM (DRDRAM), and RAMbus dynamic RAM (RDRAM).

[0127] In summary, the present invention discloses a method, device, smart refrigerator and storage medium for controlling the temperature rise of an air-cooled refrigerator during defrosting. The method includes: detecting the continuous operation time of the refrigerator; when it is detected that the refrigerator has been running continuously for a first specified time, controlling the generation of a no-pre-cooling defrost instruction; when the no-pre-cooling defrost instruction is received, entering the pre-defrost operation, when it is detected that the freezing sensor reaches the shutdown point, the compressor stops, and the freezing fan runs for a second specified time, controlling the defrost heating wire to start working, and officially starting defrosting; during the defrosting process, real-time detecting the freezing defrost sensor temperature tFD; when it is detected that the freezing defrost sensor temperature tFD is ≥0°C, controlling the defrost heating wire to disconnect, and exiting the first defrost cycle. In the first two defrost cycles, if tFD≥0℃, the defrost heating wire is disconnected and defrost is exited; in the third defrost cycle, if tFD≥10℃, the defrost heating wire is disconnected and defrost is exited; in the fourth and fifth defrost cycles, if tFD≥0℃, the defrost heating wire is disconnected and defrost is exited; in the sixth defrost cycle, if tFD≥10℃, the defrost heating wire is disconnected and defrost is exited; this cycle ensures that the heat load brought into the compartment by the evaporator bin is reduced at the time of defrost, so that the local temperature change of each refrigeration compartment is gentle, which is beneficial to the preservation of food, while reducing the defrost time and reducing the overall energy consumption.

[0128] It should be understood that the application of the present invention is not limited to the above examples. For those skilled in the art, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A method for controlling the temperature rise of an air-cooled refrigerator during defrosting, characterized in that: include: Detect the continuous operation time of the refrigerator; When the refrigerator is detected to have been running continuously for the first specified time, the control generates a defrost instruction without pre-cooling; When receiving the defrost command without pre-cooling, it enters the pre-defrost work. When it detects that the refrigeration sensor has reached the shutdown point, the compressor stops, and the refrigeration fan runs for a second specified time, then the defrost heating wire is controlled to start working, and defrost is officially started. During the defrosting process, the freezer defrost sensor temperature tFD is detected in real time; When the defrost sensor temperature tFD is detected to be ≥ 0°C, the defrost heating wire is disconnected and the first defrost cycle is exited; During the defrosting process, the defrosting sensor temperature tFD is detected in real time. When the defrosting sensor temperature tFD is detected to be ≥ 0° C., the defrosting heating wire is controlled to be disconnected, and the defrosting is exited. The following steps are further included: When the refrigerator is detected to have exited the first defrost cycle, the refrigerator is controlled to continue operating; Controlling the refrigerator to run again for the first specified time and then enter a second defrost cycle; When the refrigerator is in the second defrost cycle, if the freezer defrost sensor temperature tFD is detected to be ≥ 0°C, the defrost heating wire is controlled to be disconnected and the second defrost cycle is exited; After the step of detecting that the defrost sensor temperature tFD is ≥ 0° C. when the refrigerator is in the second defrost cycle, the defrost heating wire is disconnected to exit the second defrost cycle, the following steps are further included: When the refrigerator is detected to have exited the second defrost cycle, the refrigerator is controlled to continue operating; Controlling the refrigerator to run again for the first specified time and then enter a third defrost cycle; When the refrigerator is in the third defrost cycle, if the freezer defrost sensor temperature tFD is detected to be ≥10°C, the defrost heating wire is controlled to be disconnected and the third defrost cycle is exited; After the step of detecting that the defrost sensor temperature tFD is ≥ 10° C. during the third defrost cycle, the defrost heating wire is disconnected to exit the third defrost cycle, the method further includes: When the refrigerator is detected to have exited the third defrost cycle, the refrigerator is controlled to continue operating; After controlling the refrigerator to run for the first designated time again, the refrigerator is controlled to execute the first defrost cycle, the second defrost cycle, and the third defrost cycle in sequence.

2. The method for controlling temperature rise during defrosting of an air-cooled refrigerator according to claim 1, characterized in that: The step of controlling the generation of a defrost instruction without pre-cooling when detecting that the refrigerator has been running continuously for a specified time includes: The first designated time is 20 hours. When it is detected that the refrigerator has been running continuously for 20 hours, the control generates a defrost instruction without pre-cooling.

3. The method for controlling temperature rise during defrosting of an air-cooled refrigerator according to claim 1, characterized in that: The step of controlling the generation of a defrost instruction without pre-cooling when detecting that the refrigerator has been running continuously for a first specified time includes: When it is detected that the refrigerator has been running continuously for the first specified time, the control generates a no-pre-cooling defrost instruction, and the compressor is in a natural shutdown process.

4. The method for controlling temperature rise during defrosting of an air-cooled refrigerator according to claim 1, characterized in that: The steps of receiving a defrost command without pre-cooling and entering pre-defrost operation, detecting that the refrigeration sensor reaches the shutdown point, stopping the compressor, and controlling the defrost heating wire to start working after the refrigeration fan runs for a second specified time, and officially starting defrost include: The second designated time is 3 minutes. When a defrost command without pre-cooling is received, the pre-defrost operation is entered. When the refrigeration sensor is detected to have reached the shutdown point, the compressor naturally shuts down. After the refrigeration fan has been running for 3 minutes, the defrost heating wire is controlled to start working, and defrost is officially started.

5. A device for controlling temperature rise during defrosting of an air-cooled refrigerator, characterized in that: The device for controlling the temperature rise of an air-cooled refrigerator during defrosting is applied to the method for controlling the temperature rise of an air-cooled refrigerator during defrosting according to any one of claims 1 to 4, and the device comprises: A detection module is used to detect the continuous operation time of the refrigerator; a defrost instruction generating module, configured to control and generate a defrost instruction without pre-cooling when detecting that the refrigerator has been running continuously for a first specified time; The pre-defrost detection module is used to enter the pre-defrost work when receiving the defrost command without pre-cooling. When it detects that the refrigeration sensor has reached the shutdown point, the compressor stops, and the refrigeration fan runs for a specified second, it controls the defrost heating wire to start working and officially starts defrosting; Temperature detection module, used to detect the freezer defrost sensor temperature tFD in real time during the defrost process; The first defrost cycle module is used to control the defrost heating wire to disconnect and exit the first defrost cycle when the freezer defrost sensor temperature tFD is detected to be ≥ 0°C; The second defrost cycle module is used to control the refrigerator to continue running when detecting that the refrigerator has exited the first defrost cycle; After the refrigerator is controlled to run for the first specified time again, it enters the second defrost cycle; when the refrigerator is in the second defrost cycle, if the freezer defrost sensor temperature tFD is detected to be ≥ 0°C, the defrost heating wire is controlled to be disconnected, and the second defrost cycle is exited; The third defrost cycle module is used to control the refrigerator to continue operating when detecting that the refrigerator has exited the second defrost cycle; After the refrigerator is controlled to run for the first specified time again, it enters the third defrost cycle; when the refrigerator is in the third defrost cycle, if the freezer defrost sensor temperature tFD is detected to be ≥10°C, the defrost heating wire is controlled to be disconnected, and the third defrost cycle is exited.

6. A smart refrigerator, characterized in that: The device comprises a memory and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by one or more processors, wherein the one or more programs include the method according to any one of claims 1 to 4.

7. A non-transitory computer-readable storage medium, characterized in that When the instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to execute the method according to any one of claims 1 to 4.

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