Refrigerator unfreezing control method and refrigerator

Abstract

The invention discloses a refrigerator unfreezing control method and a refrigerator, and relates to the technical field of refrigerator control, the refrigerator comprises a refrigeration chamber, a compressor and an air duct assembly, the refrigeration chamber comprises a refrigeration area and an unfreezing area, a refrigeration chamber evaporator and a refrigeration fan are installed in the air duct assembly, and a refrigeration air duct is formed in the air duct assembly; the refrigeration air duct comprises a first air outlet and a second air outlet, the first air outlet is communicated with the refrigeration area, the second air outlet is communicated with the unfreezing area, and an unfreezing fan is arranged in the unfreezing area; the method comprises the following steps: S1, receiving an unfreezing instruction; s2, judging whether the current temperature of the refrigerating area of the refrigerator is lower than a preset temperature; s3, if the current temperature of the refrigerating area of the refrigerator is smaller than the preset temperature, a refrigerating chamber evaporator enters a defrosting stage, and a second air outlet and an unfreezing fan are opened at the same time; s4, after unfreezing is completed, normal state temperature control of the refrigeration area and the unfreezing area is recovered; the unfreezing speed is increased, the unfreezing chamber is humidified by utilizing moisture generated by defrosting, and excessive loss of moisture on the surface of unfrozen food is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerator control, and in particular to a refrigerator thawing control method and a refrigerator. Background Art

[0002] The natural air thawing method is commonly used in the field of refrigerator thawing technology. By setting up a dedicated thawing area in the cold storage room and equipping it with a dedicated thawing fan, the thawing uniformity and efficiency are improved.

[0003] However, the continuous operation of the defrosting fan will cause excessive air flow in the thawing space, resulting in excessive evaporation of moisture on the surface of frozen foods such as meat, causing air drying, and causing problems such as damage to the food fiber structure, loss of nutrients, and deterioration of taste. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a refrigerator thawing control method and refrigerator that improves the thawing rate and utilizes moisture generated by defrosting to humidify the thawing chamber, thereby preventing excessive moisture loss from the surface of the thawed food and the introduction of new moisture, which can cause condensation inside the refrigerator.

[0005] In a first aspect, the present application provides a refrigerator defrosting control method, the refrigerator comprising a refrigerated compartment, a compressor, and an air duct assembly, the refrigerated compartment comprising a refrigerated area and a thawing area, the refrigerated compartment evaporator and a refrigeration fan being installed in the air duct assembly, the refrigerated air duct being formed in the air duct assembly, the refrigerated air duct comprising a first air outlet and a second air outlet, the first air outlet being in communication with the refrigerated area, the second air outlet being in communication with the thawing area, the thawing area being provided with a thawing fan;

[0006] The method comprises:

[0007] S1, receiving a thawing instruction;

[0008] S2, determining whether the current temperature of the refrigerator refrigeration zone is lower than the preset temperature;

[0009] S3, if the current temperature of the refrigerator refrigeration zone is lower than the preset temperature, the evaporator of the refrigeration compartment enters the defrosting stage, and the second air outlet and the defrosting fan are turned on at the same time;

[0010] S4, thawing is completed, and the temperature control of the refrigeration area and the thawing area is restored to normal.

[0011] According to the refrigerator thawing control method of the embodiment of the present application, the present application does not additionally set up a humidifying component, but relies on the working state of the evaporator itself (defrosting stage) to humidify the food to be thawed. Specifically, when the refrigerator functional area (refrigerated area) is in a slightly frozen working condition, the evaporator in the refrigerated compartment is in a normal working state and continues to refrigerate. In this process, its surface temperature is lower than the air dew point temperature, causing the water vapor in the air flowing through the refrigerated compartment evaporator to condense into liquid water when it is cold, and quickly freeze into frost below 0°C. The frost layer gradually thickens and accumulates on the surface of the refrigerated compartment evaporator. When the refrigerator functional area (defrosting area) is in the thawing working condition, after thawing begins, the refrigerated compartment evaporator is controlled to be in a defrosting state. At this time, the refrigerated compartment evaporator stops refrigerating, and the higher external ambient temperature enters, making the food thawed. The local temperature in the cold storage room rises, and the rotation of the refrigeration fan brings the air with a higher temperature in the cold storage room to the evaporator in the cold storage room. At this time, the frost on the surface of the evaporator in the cold storage room begins to melt, and the air humidity increases rapidly. The refrigeration fan plays a humidifying role at this time, and sends the moist air in the evaporator in the cold storage room into the thawing area with the help of wind flow, so as to humidify the food to be thawed and avoid excessive loss of moisture on the surface of the food to be thawed. At the same time, the thawing fan and the refrigeration fan cooperate to accelerate the air circulation in the thawing area and improve the thawing rate; the humidification using the defrosting state of the cold storage room itself reduces the setting of components and the tedious steps such as the discharge of frost water on the one hand, and on the other hand, since the humidification in this application is isenthalpic humidification, condensation will not occur in the cold storage room, and defrosting is completed at the same time during the thawing of the refrigerator, thereby improving reliability.

[0012] In some embodiments, step S5 is further included.

[0013] If the current temperature of the refrigerator refrigeration zone is greater than the preset temperature, close the second air outlet and turn on the defrosting fan, turn on the refrigeration fan and control the compressor to cool the refrigeration zone, and repeat step S2.

[0014] In some embodiments, the preset temperature is equal to the refrigeration temperature + A, 0.5°C < A < 5°C.

[0015] In some embodiments, the refrigerator further includes a timer, and the evaporator of the refrigerated compartment enters an active defrost stage at fixed time intervals. When thawing is completed, the active defrost stage is reset.

[0016] In some embodiments, the refrigerator further includes a freezer compartment and a freezer compartment evaporator, and the active defrost stage includes a refrigeration defrost mode and a follow-up defrost mode; when the refrigeration defrost mode is turned on, the refrigeration compartment evaporator is defrosted and the freezer compartment evaporator is refrigerated normally; when the follow-up defrost mode is turned on, the refrigeration compartment evaporator and the freezer compartment evaporator are defrosted simultaneously; the refrigeration defrost mode is automatically performed every T1 time period, and the follow-up defrost mode is automatically performed every T2 time period, where T2>T1.

[0017] In some embodiments, the method further includes step S6, wherein when a defrost instruction is received, the refrigerator is caused to execute the active defrost stage according to whether the next active defrost stage of the refrigerator is in the refrigeration defrost mode or the follow-up defrost mode.

[0018] In some embodiments, the refrigerator further includes a heater for heating the evaporator of the refrigerated compartment. In the follow-up defrost mode, the compressor is controlled to stop, and the second air outlet, the defrost fan and the heater are turned on.

[0019] In some embodiments, step S5 further includes: controlling the compressor to refrigerate the refrigerated area, including increasing the speed of the compressor by 1000 to 3000 revolutions based on the initial speed.

[0020] In some embodiments, after receiving the thawing instruction in step S1 , the process further includes calculating the thawing time, and determining that the thawing is completed after the thawing time has elapsed.

[0021] In a second aspect, the present application also provides a refrigerator, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the above-mentioned refrigerator defrosting control method.

[0022] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0024] Figure 1 This is a flow chart of a refrigerator thawing control method according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;

[0026] Figure 3 Schematic diagram of another refrigerator structure according to an embodiment of the present invention.

[0027] Reference numerals: refrigerator 100; freezing compartment 1; freezing compartment evaporator 11;

[0028] Refrigeration compartment 2; refrigeration area 21; refrigeration area air inlet 211; refrigeration area air outlet 212; first temperature sensor 213; thawing area 22; thawing area air inlet 221; thawing area air outlet 222; thawing fan 223; second temperature sensor 224;

[0029] First air outlet 2311 ; second air outlet 2312 ; return air outlet 2313 ; refrigeration compartment evaporator 232 ; refrigeration fan 233 ; damper 235 . DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meanings as commonly understood by those skilled in the art to which the present invention belongs. The terms used in the present invention and the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The terms "including" and "having" and any variations thereof in the present invention and the claims and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the present invention and the claims and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0032] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] The term "and / or" in this disclosure simply describes an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this disclosure generally indicates that the related objects are in an "or" relationship.

[0034] In the embodiments of the present invention, identical reference numerals denote identical components, and for the sake of brevity, detailed descriptions of identical components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of the present invention, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings, are merely illustrative and do not constitute any limitation on the present invention.

[0035] The term "plurality" used in the present invention refers to two or more (including two).

[0036] The following combination Figures 1 to 3 The refrigerator thawing control method and the refrigerator of the present invention are described.

[0037] The refrigerator 100 of the embodiment of the present application includes a refrigerating compartment 2, a compressor and an air duct assembly. The refrigerating compartment 2 includes a refrigerating area 21 and a thawing area 22. When the user does not need to use the thawing area 22 to thaw food, the thawing area 22 is used for food preservation like the refrigerating area 21. When the user sends a thawing instruction to the refrigerator 100, the thawing area 22 is used for thawing food, and the refrigerating area 21 is still used for refrigerating and preserving food; the refrigerating area 21 is provided with a refrigerating area air inlet 211 and a refrigerating area air outlet 212, and the thawing area 22 is provided with a thawing area air inlet 221 and a thawing area air outlet 222; the refrigerating compartment evaporator 232 and the refrigerating fan 233 are installed in the air duct assembly. When the refrigerating compartment evaporator 232 is turned on, the refrigerating compartment 2 is cooled; a refrigerating air duct is formed in the air duct assembly, and the refrigerating air duct includes a first air outlet 2311 and a second air outlet 231 2. The first air outlet 2311 is connected to the refrigeration zone air inlet 211, and the second air outlet 2312 is connected to the thawing zone air inlet 221. The air in the refrigeration air duct enters the refrigeration zone 21 and the thawing zone 22 respectively through the refrigeration zone air inlet 211 and the thawing zone air inlet 221, and then is discharged from the refrigeration zone 21 and the thawing zone 22 through the refrigeration zone air outlet 212 and the thawing zone air outlet 222 and re-flows into the refrigeration air duct through the return air outlet 2313. The return air outlet 2313 is arranged in the refrigeration air duct, thereby realizing air circulation inside the refrigeration compartment 2. A damper 235 is arranged at the second air outlet 2312. The flow state of the air flow between the refrigeration air duct and the thawing zone 22 is changed by controlling the opening and closing of the damper 235. The edge of the damper 235 can adopt a silicone-magnetic double redundant seal to reduce the air leakage rate when closed. The damper 235 can be opened and closed by a stepping motor. A thawing fan 223 is provided in the thawing area 22 to increase the air flow rate and thus increase the thawing rate of the food to be thawed.

[0038] Please refer to Figure 1 , Figure 1 It is a flow chart of a method for controlling thawing of a refrigerator 100 provided in an embodiment of the present application.

[0039] like Figure 1As shown, the thawing control method of the refrigerator 100 includes steps S1 to S4.

[0040] Step S1, receiving a defrost instruction; the user can control the defrost zone 22 of the refrigerator 100 to enter a defrost state through a mobile terminal or the display panel of the refrigerator 100;

[0041] Step S2, determining whether the current temperature of the refrigeration zone 21 of the refrigerator 100 is less than a preset temperature; the refrigeration zone 21 is provided with a first temperature sensor 213, and the refrigerator 100 controller reads the current temperature of the refrigeration zone 21 measured by the first temperature sensor 213 and determines whether the current temperature is less than the preset temperature;

[0042] In step S3, if the current temperature of the refrigerating zone 21 of the refrigerator 100 is lower than the preset temperature, the refrigerating compartment evaporator 232 enters the defrosting stage, and the second air outlet 2312 and the defrosting fan 223 are turned on at the same time; specifically, when the refrigerating compartment evaporator 232 is in the normal refrigeration state, the water vapor in the air flowing through it will condense into liquid water and quickly freeze into frost below 0°C. The refrigerating zone 21 and the refrigerating air duct are connected to the refrigerating zone air inlet 211 through the first air outlet 2311. If the controller determines that the current temperature of the refrigerating zone 21 is lower than the preset temperature, it means that the surface temperature of the refrigerating compartment evaporator 232 located in the refrigerating air duct is low. At this time, the frost layer on the surface of the refrigerating compartment evaporator 232 will continue to thicken, resulting in poor refrigeration effect and increased energy consumption. At this time, the refrigerating compartment evaporator 232 is controlled to enter the defrosting stage, and the refrigerant vaporization in the refrigerating compartment evaporator 232 is stopped. At this time, the cold source is no longer supplied to the refrigerating compartment 2. The higher ambient temperature outside the refrigerator 100 will cause the local temperature in the refrigerating compartment 2 to rise. Combined with the high-speed rotation of the refrigerating fan 233, the high-temperature air in the refrigerating compartment 2 is brought to the refrigerating compartment evaporator 232. At this time, the frost layer on the surface of the refrigerating compartment evaporator 232 begins to melt, and the air humidity increases rapidly. At this time, the damper 235 is opened to connect the second air outlet 2312 with the thawing zone air inlet 221, so that a gas flow channel is formed between the refrigerating air duct and the thawing zone 22. Under the joint action of the refrigerating fan 233 and the thawing fan 223, a large amount of humid air is blown into the thawing zone 22 to humidify the food to be thawed, creating a low-temperature and high-humidity thawing environment for the food to be thawed, thereby avoiding the situation where food moisture loss is caused by only using the thawing fan 223 to blow air to thaw the thawed food.

[0043] S4, thawing is completed, and the temperature control of the refrigeration zone 21 and the thawing zone 22 is restored to normal state; a thawing timer is set, and the thawing timer counts down according to the preset thawing time, and the controller determines whether the current thawing is completed according to the thawing countdown. A weight sensor or a proximity sensor can also be set in the thawing zone 22. After judging that the current thawing is completed according to the thawing timer, the controller judges whether the current food to be thawed has been taken out according to the weight sensor or the proximity sensor. If the current food to be thawed has been taken out, the evaporator 232 of the refrigeration compartment is restored to the working state, and the air door 235 is kept open, so that the refrigeration zone 21 and the thawing zone 22 are both connected to the refrigeration air duct, and the temperature in the refrigeration compartment 2 is adjusted to the refrigeration temperature. At this time, the thawing zone 22 and the refrigeration zone 21 are both used to refrigerate and preserve the food; if the current food to be thawed has been taken out, the evaporator 232 of the refrigeration compartment is restored to the working state, and the air door 235 is kept open, so that the refrigeration zone 21 and the thawing zone 22 are both connected to the refrigeration air duct, and the temperature in the refrigeration compartment 2 is adjusted to the refrigeration temperature. If the food is not taken out, the evaporator 232 of the refrigerating compartment is restored to the working state, and the opening and closing of the damper 235 is controlled according to the temperature of the thawing zone 22 measured by the second temperature sensor 224, and the cold source is supplied only to the refrigerating zone 21 or to the refrigerating zone 21 and the thawing zone 22 at the same time, so that the refrigerating zone 21 returns to the refrigerating temperature and the temperature of the thawing zone 22 is controlled between -2°C and 5°C, thereby preventing the food to be thawed from spoiling and making the meat products to be thawed in a slightly frozen and easy-to-cut state, which is convenient for the user to handle later, and sending a message push to the mobile terminal and / or controlling the indicator light of the refrigerator 100 to flash, prompting the user to take out the food to be thawed in time. If the user does not take out the food to be thawed for a long time (such as 12 hours, 24 hours, etc.), the damper 235 is opened at this time, and the temperature of the thawing zone 22 is controlled to return to the refrigerating temperature, waiting for the user's next thawing instruction.

[0044] According to the defrosting control method of the refrigerator 100 according to the embodiment of the present application, the present application does not additionally set a humidifying component, but relies on the working state of the evaporator itself (defrosting stage) to humidify the food to be defrosted. Specifically, when the functional area of the refrigerator 100 (refrigerated area 21) is in a slightly frozen condition, the evaporator 232 in the refrigerated compartment is in a normal working state and continues to refrigerate. In this process, its surface temperature is lower than the air dew point temperature, causing the water vapor in the air flowing through the refrigerated compartment evaporator 232 to condense into liquid water when it is cooled, and quickly freeze into frost below 0°C. The frost layer gradually thickens and accumulates on the surface of the refrigerated compartment evaporator 232. When the functional area of the refrigerator 100 (defrosting area 22) is in the defrosting condition, after thawing begins, the refrigerated compartment evaporator 232 is controlled to be in a defrosting state. At this time, the refrigerated compartment evaporator 232 stops refrigerating, and the external higher temperature ambient temperature enters the refrigerated compartment, making the refrigerated compartment evaporator 232 stop refrigerating. The local temperature in the compartment 2 rises, and the rotation of the refrigeration fan 233 brings the air with a higher temperature in the refrigeration compartment 2 to the refrigeration compartment evaporator 232. At this time, the frost on the surface of the refrigeration compartment evaporator 232 begins to melt, and the air humidity increases rapidly. The refrigeration fan 233 plays a humidifying role at this time, and sends the moist air in the refrigeration compartment evaporator 232 into the thawing zone 22 with the help of wind flow, so as to humidify the food to be thawed and avoid excessive loss of moisture on the surface of the food to be thawed. At the same time, the thawing fan 223 and the refrigeration fan 233 cooperate to accelerate the air circulation in the thawing zone 22, thereby improving the thawing rate; utilizing the defrosting state of the refrigeration compartment 2 to humidify, on the one hand, reduces the setting of components and reduces the tedious steps such as the discharge of frost water; on the other hand, since the humidification of the present application is isenthalpic humidification, condensation will not occur in the refrigeration compartment 2, and defrosting is completed at the same time during the thawing period of the refrigerator 100, thereby improving reliability.

[0045] The embodiment of the present invention also includes step S5, if the current temperature of the refrigeration zone 21 of the refrigerator 100 is greater than the preset temperature, the second air outlet 2312 is closed and the defrosting fan 223 is turned on, the refrigeration fan 233 is turned on and the compressor is controlled to refrigerate the refrigeration zone 21, and step S2 is repeated; specifically, the controller determines that the current temperature of the refrigeration zone 21 is greater than the preset temperature based on the current temperature of the refrigeration zone 21 measured by the first temperature sensor 213, indicating that the current temperature of the refrigeration zone 21 is high and is not conducive to food preservation. At this time, the compressor is controlled to refrigerate the refrigeration zone 21, the refrigeration fan 233 is turned on and the second air outlet 2312 is closed to cut off the air flow channel between the refrigeration air duct and the thawing zone 22, and the cold air is concentratedly supplied to the refrigeration zone 21 to ensure the preservation effect of the refrigeration zone 21. At the same time, since there is no cold air supplied in the thawing zone 22 at this time, as the thawing fan 223 rotates, the temperature of the food to be thawed in the thawing zone 22 rises rapidly.

[0046] In some embodiments, the preset temperature is equal to the refrigeration temperature + A, 0.5℃<A<5℃; because the user opens the refrigerator 100 door and places the food to be thawed in the thawing area 22 during defrosting, this behavior will cause cold air leakage and the temperature will rise instantaneously, but after the door is closed, the temperature will drop again. By setting the preset temperature to the refrigeration temperature + a specific constant, the temperature control of the refrigeration area 21 is allowed to be improved, that is, the tolerance range of A, and the air in the refrigeration area 21 with a higher temperature than the normal set temperature is prepared for thawing; at the same time, it is avoided that the controller misjudges that the temperature in the refrigeration area 21 is high due to the instantaneous temperature rise, and cools the refrigeration area 21, causing frostbite of food.

[0047] In some embodiments, the refrigerator 100 further includes a timer, and the evaporator of the refrigerating compartment 2 enters an active defrosting stage at fixed intervals. When thawing is completed, the active defrosting stage is reset. The refrigerator 100 can actively defrost the refrigerating compartment 2 at preset time intervals, such as automatically defrosting the refrigerating compartment 2 every 3 hours or 6 hours, so as to avoid accumulation of frost in the refrigerating compartment 2, which affects the refrigeration effect of the refrigerator 100, increases power consumption, and prolongs the working time of the compressor. Since defrosting is performed at the same time as thawing, a certain amount of defrosting has been completed in the refrigerating compartment 2 when thawing is completed. At this time, if the timer continues to count, the refrigerator 100 will actively defrost according to the original preset time interval, which may result in multiple defrosting operations in a short period of time. On the one hand, this increases unnecessary energy consumption, and on the other hand, it causes the temperature of the refrigerating zone 21 to be insufficient, affecting the preservation effect. Therefore, after thawing is completed, the timer is reset to zero, so that the active defrosting stage is reset.

[0048] In some embodiments, the refrigerator 100 further includes a freezer compartment 1 and a freezer compartment evaporator 11, and the active defrost stage includes a refrigeration defrost mode and a follow-up defrost mode; when the refrigeration defrost mode is turned on, the refrigeration compartment evaporator 232 defrosts, and the freezer compartment evaporator 11 refrigerates normally; when the follow-up defrost mode is turned on, the refrigeration compartment evaporator 232 and the freezer compartment evaporator 11 defrost at the same time, the refrigeration defrost mode is automatically performed every T1 time period, and the follow-up defrost mode is automatically performed every T2 time period, wherein T2>T1; specifically, the embodiment of the present application further includes an electric switching valve, which controls the refrigeration compartment evaporator 232 and the freezer compartment evaporator 11 to be opened and closed separately, and the active defrost stage includes two modes, the first refrigeration defrost mode has a relatively mild defrost effect, the freezer compartment 1 is refrigerated normally, and the refrigeration compartment 2 is controlled by The electric switching valve stops the evaporation of refrigerant in the evaporator of the refrigerating compartment 2, causing the refrigerating compartment 2 to stop cooling. The refrigerating fan 233 stirs the air until the refrigerating compartment evaporator 232 reaches a certain temperature, such as 2-6°C, before the defrosting is terminated. The second follow-up defrost mode provides a more intensive defrosting process for the refrigerator 100. In this case, the compressor is controlled to stop, and the refrigerating compartment evaporator 11 and the refrigerating compartment evaporator 232 are controlled to stop cooling simultaneously by controlling the electric switching valve. The refrigerating fan 233 stirs the air until the refrigerating compartment evaporator 232 reaches a certain temperature, such as 4-8°C, before the defrosting is terminated. Different defrosting intervals are set according to the different defrosting intensities of the two defrosting modes. For example, the refrigerating defrost mode performs regular defrosting on the refrigerating compartment 2 every three hours, and the follow-up defrost mode performs regular defrosting on the refrigerating compartment 2 and the freezing compartment 1 every six hours.

[0049] In some embodiments, the refrigerator 100 defrosting control method also includes step S6, which determines that when a defrost instruction is received, the refrigerator 100 performs an active defrost stage according to whether the next active defrost stage of the refrigerator 100 is a refrigeration defrost mode or a follow-up defrost mode; while defrosting, the refrigerator 100 is defrosted according to the original defrost process to avoid affecting the defrost effect of the refrigerator 100. At the same time, the controller can also adjust the speed of the refrigeration fan 233 and the defrost fan 223 according to the specific mode of the next active defrost stage, so that the moisture generated by the defrost matches the heat exchange speed of the thawing zone 22, thereby further improving the thawing effect.

[0050] In some embodiments, the refrigerator 100 further includes a heater, which is used to heat the refrigeration compartment evaporator 232. In the defrosting mode, the compressor is controlled to stop, and the second air outlet 2312, the defrosting fan 223 and the heater are turned on. The refrigeration compartment evaporator 232 is heated by the heater to increase the temperature of the gas around the refrigeration compartment evaporator 232. On the one hand, the defrosting process is accelerated. On the other hand, the hot air is blown into the thawing area 22 through the cooperation of the refrigeration fan 233 and the defrosting fan 223, thereby accelerating the thawing process.

[0051] In some embodiments, step S5 also includes: controlling the compressor to refrigerate the cold storage area 21, including increasing the speed of the compressor, and the speed increase is 1000 to 3000 revolutions based on the initial speed, thereby improving the refrigeration effect of the cold storage area 21 while avoiding a rapid drop in temperature in the cold storage area 21 that causes frostbite of food, thereby improving the food preservation effect of the cold storage area 21.

[0052] In some embodiments, after receiving the thawing instruction in step S1, the system further includes calculating the thawing time and determining that thawing is complete after the thawing time has elapsed. The controller can obtain the weight of the food to be thawed in the thawing area 22 through a weight sensor. During the system development and design phase, researchers conducted detailed measurements of items to be thawed of different weights through extensive experiments and data analysis, and pre-stored the measurements in the database. In this way, during the actual thawing process, the system can quickly and accurately obtain the corresponding thawing time from the database based on the weight of the items to be thawed, and start a countdown from the beginning of thawing until the thawing is complete, thereby making it easier for users to understand the thawing progress.

[0053] It should be noted that the logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device), or in conjunction with such instruction execution system, apparatus, or device. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transmit a program for use by an instruction execution system, apparatus, or device, or in conjunction with such instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection portion having one or more wires (electronic device), a portable computer disk cartridge (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and portable compact disc read-only memory (CDROM). Furthermore, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing it in another suitable manner if necessary, and then storing it in a computer memory.

[0054] It should be understood that various parts of the present invention can be implemented using hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0055] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0056] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A refrigerator thawing control method, characterized in that: The refrigerator includes a refrigeration compartment, a compressor, and an air duct assembly. The refrigeration compartment includes a refrigeration area and a thawing area. The refrigeration compartment evaporator and the refrigeration fan are installed in the air duct assembly. The refrigeration air duct is formed in the air duct assembly. The refrigeration air duct includes a first air outlet and a second air outlet. The first air outlet is connected to the refrigeration area, and the second air outlet is connected to the thawing area. The thawing area is provided with a thawing fan. The method comprises: S1, receiving a thawing instruction; S2, determining whether the current temperature of the refrigerator refrigeration zone is lower than the preset temperature; S3, if the current temperature of the refrigerator refrigeration zone is lower than the preset temperature, the evaporator of the refrigeration compartment enters the defrosting stage, and the second air outlet and the defrosting fan are turned on at the same time; S4, thawing is completed, and the temperature control of the refrigeration area and the thawing area is restored to normal.

2. The refrigerator thawing control method according to claim 1, characterized in that: Also includes step S5, If the current temperature of the refrigerator refrigeration zone is greater than the preset temperature, close the second air outlet and turn on the defrosting fan, turn on the refrigeration fan and control the compressor to cool the refrigeration zone, and repeat step S2.

3. The refrigerator thawing control method according to claim 1, characterized in that: The preset temperature is equal to the refrigeration temperature + A, 0.5°C < A < 5°C.

4. The refrigerator thawing control method according to claim 1, characterized in that: The refrigerator further includes a timer, and the evaporator of the refrigerated compartment enters an active defrosting stage at fixed intervals. When thawing is completed, the active defrosting stage is reset.

5. The refrigerator thawing control method according to claim 4, characterized in that: The refrigerator further comprises a freezing compartment and a freezing compartment evaporator, and the active defrosting stage comprises a refrigeration defrosting mode and a follow-up defrosting mode; When the refrigeration defrost mode is turned on, the refrigeration compartment evaporator defrosts and the freezer compartment evaporator refrigerates normally. When the follow-up defrost mode is turned on, the refrigeration compartment evaporator and the freezer compartment evaporator defrost simultaneously. The refrigeration defrost mode is automatically performed every T1 time period, and the follow-up defrost mode is automatically performed every T2 time period, wherein T2>T1.

6. The refrigerator thawing control method according to claim 5, characterized in that: The method further includes step S6, determining that when a defrost instruction is received, causing the refrigerator to execute the active defrost stage according to whether the next active defrost stage of the refrigerator is in the refrigeration defrost mode or the follow-up defrost mode.

7. The refrigerator thawing control method according to claim 5, characterized in that: The refrigerator further includes a heater for heating the evaporator of the refrigeration compartment. In the follow-up defrost mode, the compressor is controlled to stop, and the second air outlet, the defrosting fan and the heater are turned on.

8. The refrigerator thawing control method according to claim 2, characterized in that: Step S5 also includes: controlling the compressor to refrigerate the refrigerated area, including increasing the speed of the compressor by 1000 to 3000 revolutions based on the initial speed.

9. The refrigerator thawing control method according to claim 5, characterized in that: After receiving the thawing instruction in step S1, the method further includes calculating the thawing time, and determining that the thawing is completed after the thawing time ends.

10. A refrigerator, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the refrigerator thawing control method according to any one of claims 1 to 9.

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