Refrigerator and unfreezing method for food materials stored in refrigerator

Abstract

The invention provides a refrigerator and an unfreezing method for food materials stored in the refrigerator. The refrigerator comprises a refrigerating chamber, an unfreezing chamber and an evaporation cabin, and an evaporator and a fan are arranged in the evaporation cabin; the controller is connected with the humidity sensor, the temperature sensor, the first air door, the second air door, the evaporator and the fan. The unfreezing chamber is arranged in the refrigerating chamber of the refrigerator, food materials to be unfrozen are unfrozen to the temperature at which the food materials are slightly frozen and easy to cut by utilizing high-humidity gas in the evaporation cabin, and then the temperature in the unfreezing chamber is controlled within the constant range at which the food materials are slightly frozen and easy to cut. By controlling the opening or closing of the first air door and the fan, the effect of conveying the high-humidity gas to the thawing chamber can be realized, so that the problems of long thawing time and non-uniform thawing caused by incapability of accurately capturing the surface temperature of the stored food materials in the thawing process of the stored food materials are solved.

Description

Technical Field

[0001] The present application relates to the technical field of food thawing in household refrigerators, and in particular to a refrigerator and a method for thawing food stored in the refrigerator. Background Art

[0002] Food thawing usually refers to the process of restoring frozen food to a thawed state in some way. Commonly used thawing techniques in daily life include water thawing, air thawing and refrigerator thawing.

[0003] Among them, water thawing is to put the frozen meat into room temperature or warm water to thaw it. However, water thawing takes a long time, and during the thawing process, the nutrients of the meat will be seriously lost with blood and water. Air thawing is to take out the meat in advance and thaw it in room temperature air. However, air thawing takes a long time. If no one is watching, once the time is too long, the surface of the meat is prone to discoloration and a large amount of blood will flow out of the meat. Microwave thawing. Refrigerator thawing Take the food that needs to be thawed out of the freezer in advance and put it in the lower layer of the refrigerator's refrigerator compartment to slowly thaw it at low temperature. This method can maintain the quality and safety of the food to the greatest extent, but the thawing time is longer.

[0004] Therefore, in order to solve the problem of long thawing time of meat, in some refrigerators, a radio frequency thawing device is added to generate radio frequency waves of corresponding frequency in the thawing chamber to thaw the food to be thawed, or a heater is set to thaw the food to be thawed by combining the airflow in the refrigerated compartment and the heat released by the heater. However, the radio frequency thawing device and the heater generate a large amount of additional heat in the refrigerator space, which increases the heat load of the refrigerator, and the thawing by hot air is uneven. It is easy to thaw the surface but still freeze inside, and the heat emitted by the heater in the refrigerator increases the power consumption. Summary of the invention

[0005] The present application provides a refrigerator and a method for thawing food stored in the refrigerator, so as to solve the problem that the surface temperature of the stored food cannot be accurately captured during the thawing process, resulting in a long thawing time and uneven thawing.

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

[0007] Cold room;

[0008] a thawing chamber, the thawing chamber being located within the refrigerating chamber;

[0009] An evaporation chamber, wherein an evaporator and a fan are arranged in the evaporation chamber;

[0010] The thawing chamber is connected to the evaporation chamber through a first air duct; the refrigeration chamber is connected to the evaporation chamber through a second air duct;

[0011] The first air duct is provided with a first air door, and the second air duct is provided with a second air door;

[0012] The evaporator is provided with a temperature and humidity sensor, and the thawing chamber is provided with a temperature sensor;

[0013] A controller, wherein the controller is respectively connected to the humidity sensor, the temperature sensor, the first damper, the second damper, the evaporator, and the fan;

[0014] The controller is configured to:

[0015] In response to a thawing instruction for thawing stored food, the evaporation chamber temperature and the evaporation chamber humidity detected by the temperature and humidity sensor are obtained, and the surface temperature of the food to be thawed is detected by the temperature sensor is obtained;

[0016] comparing the evaporation compartment temperature with the surface temperature to generate a first comparison result;

[0017] comparing the evaporation chamber humidity with a preset humidity range to generate a second comparison result;

[0018] The fan, the first damper, and the second damper are controlled to be opened or closed according to the first comparison result and the second comparison result.

[0019] Optionally, the controller is configured as:

[0020] If the evaporation compartment temperature is greater than the surface temperature and the evaporation compartment humidity is within the preset humidity range, controlling the first damper and the fan to open, and controlling the second damper to close;

[0021] If the evaporation compartment temperature is lower than the surface temperature or the evaporation compartment humidity is not within the preset humidity range, the defrost heater is controlled to start so that the evaporation compartment temperature is higher than the surface temperature and the evaporation compartment humidity is within the preset humidity range.

[0022] Optionally, after controlling the first damper and the fan to open and controlling the second damper to close, the controller is further configured to:

[0023] If the surface temperature is greater than a first preset temperature, the fan is controlled to be turned off;

[0024] Acquiring the surface temperature at preset intervals;

[0025] If the surface temperatures are all greater than a first preset temperature, calculating a difference between the evaporation compartment temperature and the first preset temperature;

[0026] If the difference is less than the second preset temperature, the fan and the second damper are controlled to open, and the first damper is controlled to close.

[0027] Optionally, the controller is further configured to:

[0028] If the difference is less than the preset temperature value, the fan is controlled to turn on;

[0029] If the difference is greater than the second preset temperature, the defrost heater is controlled to be turned on for a preset time.

[0030] Optionally, the first preset temperature is any value in the range of 0-6°C; the second preset temperature is any value in the range of 0-1°C; the preset interval time is any value in the range of 1-10 minutes; the humidity range is 80-100%, and the preset temperature value is 0°C.

[0031] Optionally, a refrigeration system is further included, wherein the refrigeration system includes a compressor and a refrigeration pipeline connected to the compressor; and the controller is further configured to:

[0032] If the temperature of the evaporation compartment is lower than the surface temperature or the humidity of the evaporation compartment is not within the preset humidity range, the refrigeration pipeline is controlled to be closed and the compressor is turned off;

[0033] If the difference is less than the second preset temperature, the compressor is controlled to start and the refrigeration pipeline is connected.

[0034] Optionally, the first air gate is set at the air inlet of the first air duct, the second air gate is set at the air inlet of the second air duct, the horizontal height of the air inlet of the first air duct is smaller than the horizontal height of the air inlet of the second air duct, the horizontal height of the air inlet of the first air duct is greater than the horizontal height of the air outlet of the first air duct, and the horizontal height of the air inlet of the second air duct is smaller than the horizontal height of the air outlet of the second air duct.

[0035] In a second aspect, the present application provides a method for thawing food stored in a refrigerator, which is applied to the refrigerator described in the first aspect, comprising:

[0036] In response to a thawing instruction for thawing stored food, the temperature and humidity of the evaporation chamber detected by the temperature and humidity sensor are obtained, and the surface temperature of the food to be thawed is detected by the temperature sensor;

[0037] comparing the evaporation compartment temperature with the surface temperature to generate a first comparison result;

[0038] comparing the evaporation chamber humidity with a preset humidity range to generate a second comparison result;

[0039] The fan, the first damper and the second damper are controlled to be opened or closed according to the first comparison result and the second comparison result.

[0040] Optionally, the method further includes:

[0041] If the evaporation compartment temperature is greater than the surface temperature and the evaporation compartment humidity is within the preset humidity range, controlling the first damper and the fan to open, and controlling the second damper to close;

[0042] If the temperature of the evaporation compartment is lower than the surface temperature or the humidity of the evaporation compartment is not within the preset humidity range, the defrost heater is controlled to start, the refrigeration pipeline is controlled to close, and the compressor is controlled to close.

[0043] Optionally, the method further includes:

[0044] If the surface temperature is greater than a first preset temperature, the fan is controlled to be turned off;

[0045] Acquiring the surface temperature at preset intervals;

[0046] If the surface temperatures are all greater than a first preset temperature, calculating a difference between the evaporation compartment temperature and the first preset temperature;

[0047] If the difference is less than the second preset temperature, the fan and the second damper are controlled to open, the first damper is controlled to close, the compressor is controlled to start, and the refrigeration pipeline is connected.

[0048] It can be seen from the above technical scheme that the present application provides a refrigerator and a method for thawing food stored in the refrigerator, the refrigerator comprising: a refrigerating chamber; a thawing chamber, the thawing chamber being inside the refrigerating chamber; an evaporating chamber, an evaporator and a fan being arranged inside the evaporating chamber; the thawing chamber is connected to the evaporating chamber through a first air duct; the refrigerating chamber is connected to the evaporating chamber through a second air duct; the first air duct is provided with a first air door, and the second air duct is provided with a second air door; the evaporator is provided with a temperature and humidity sensor, and the thawing chamber is provided with a temperature sensor; a controller, the controller being respectively connected to the humidity sensor, the temperature sensor, and the first air door. The first damper, the second damper, the evaporator and the fan are connected; the controller is configured to: in response to a thawing instruction for thawing stored food, obtain the evaporation chamber temperature and the evaporation chamber humidity detected by the temperature and humidity sensor, and obtain the surface temperature of the food to be thawed detected by the temperature sensor; compare the evaporation chamber temperature with the surface temperature to generate a first comparison result; compare the evaporation chamber humidity with a preset humidity range to generate a second comparison result; and control the fan, the first damper and the second damper to open or close according to the first comparison result and the second comparison result. By setting a thawing chamber in the refrigerator refrigerating chamber, the high humidity gas in the evaporation chamber is used to thaw the food to be thawed to a temperature that is slightly frozen and easy to cut, and then the temperature in the thawing chamber is controlled within a constant range of slightly frozen and easy to cut. By controlling the opening or closing of the first damper and the fan, the effect of delivering high humidity gas to the thawing chamber can be achieved, so as to solve the problem that the surface temperature of the stored food cannot be accurately captured during the thawing process, resulting in a long thawing time and uneven thawing. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0050] Figure 1 A schematic diagram of the refrigerator structure provided in an embodiment of the present application;

[0051] Figure 2 This is a flow chart of a method for thawing items stored in a refrigerator provided in an embodiment of the present application.

[0052] Reference numerals:

[0053] Among them, 1-refrigeration room; 2-thawing room; 3-evaporation compartment; 4-fan; 5-evaporator; 6-temperature and humidity sensor; 7-second air duct; 8-second air door; 9-first air duct; 10-first air door; 11-temperature sensor; 12-controller. DETAILED DESCRIPTION

[0054] The following embodiments are described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following embodiments do not represent all implementations consistent with the present application. They are only examples of systems and methods consistent with some aspects of the present application as detailed in the claims.

[0055] Food thawing usually refers to the process of restoring frozen food to a thawed state in some way. Commonly used thawing techniques in daily life include water thawing, air thawing and refrigerator thawing.

[0056] Among them, water thawing is to put the frozen meat into room temperature or warm water to thaw it. However, water thawing takes a long time, and during the thawing process, the nutrients of the meat will be seriously lost with blood and water. Air thawing is to take out the meat in advance and thaw it in room temperature air. However, air thawing takes a long time. If no one is watching, once the time is too long, the surface of the meat is prone to discoloration and a large amount of blood will flow out of the meat. Microwave thawing. Refrigerator thawing Take the food that needs to be thawed out of the freezer in advance and put it in the lower layer of the refrigerator's refrigerator compartment to slowly thaw it at low temperature. This method can maintain the quality and safety of the food to the greatest extent, but the thawing time is longer.

[0057] Therefore, in order to solve the problem of long thawing time of meat, in some embodiments, a radio frequency thawing device is arranged in the thawing chamber in the refrigerator, and the radio frequency thawing device generates radio frequency waves of corresponding frequency in the thawing chamber to thaw the food to be thawed, or a heater is arranged to thaw the food to be thawed by combining the airflow in the refrigerated chamber and the heat released by the heater. However, the radio frequency thawing device and the heater generate a large amount of additional heat in the refrigerator space, which increases the heat load of the refrigerator, and the thawing is uneven by hot air thawing. It is easy to thaw the surface but still freeze inside, and the heat emitted by the heater in the refrigerator increases the power consumption.

[0058] To solve the problem that the surface temperature of stored food cannot be accurately captured during the thawing process, resulting in long thawing time and uneven thawing, see Figure 1 Some embodiments of the present application provide a refrigerator, including:

[0059] Refrigerating chamber 1; and thawing chamber 2, wherein thawing chamber 2 is inside refrigerating chamber 1.

[0060] The evaporation chamber 3 has an evaporator 5 and a fan 4 disposed therein.

[0061] The thawing chamber 2 is connected to the evaporation chamber 3 through a first air duct 9 ; the refrigerating chamber 1 is connected to the evaporation chamber 3 through a second air duct 7 .

[0062] The first air duct 9 is provided with a first air door 10 , and the second air duct 7 is provided with a second air door 8 .

[0063] The evaporator 5 is provided with a temperature and humidity sensor 6 , and the thawing chamber 2 is provided with a temperature sensor 11 .

[0064] The controller 12 is connected to the humidity sensor, the temperature sensor 11, the first damper 10, the second damper 8, the evaporator 5, and the fan 4 respectively.

[0065] Among them, a tray for placing food is arranged in the thawing chamber 2, and the temperature sensor 11 is arranged on the tray. When the food is placed on the tray, the temperature sensor 11 contacts the food and can detect the surface temperature of the food. In the embodiment of the present application, the food to be detected is frozen meat.

[0066] The thawing chamber 2 is arranged in the refrigerating chamber 1. The thawing chamber 2 is an independent sealed space. The thawing chamber 2 is connected to the evaporator 5 and the fan 4 in the evaporation chamber 3 through the first air duct 9 and the first air door 10. When the first air door 10 is opened, the high-humidity gas in the evaporation chamber 3 can be discharged into the thawing chamber 2 through the fan 4.

[0067] The refrigerating chamber 1 is connected to the evaporator 5 and the fan 4 in the evaporating chamber 3 through the second air duct 7 and the second air door 8. When the refrigerating chamber 1 needs to be refrigerated, the second air door 8 is opened to discharge the cold air generated by the evaporator 5 into the refrigerating chamber 1 through the fan 4.

[0068] The evaporator 5 is provided with a temperature and humidity sensor 6, which can obtain the temperature and humidity conditions of the evaporation chamber 3 in real time. The temperature sensor 11 is provided on the tray of the thawing chamber 2, which can detect the surface temperature of the food in real time.

[0069] When the food to be thawed needs to be thawed, the controller 12 can control the opening or closing of the first damper 10, the second damper 8 and the fan 4 according to the values ​​detected by the temperature and humidity sensor 6 and the temperature sensor 11 to thaw the food to be thawed.

[0070] Specifically, the controller 12 is configured as follows:

[0071] In response to a thawing instruction for thawing stored food, the evaporation compartment temperature and evaporation compartment humidity detected by the temperature and humidity sensor 6 are obtained, and the surface temperature of the food to be thawed detected by the temperature sensor 11 is obtained.

[0072] The evaporation compartment temperature is compared with the surface temperature to generate a first comparison result.

[0073] The evaporation compartment humidity is compared with a preset humidity range to generate a second comparison result.

[0074] According to the first comparison result and the second comparison result, the fan 4, the first damper 10 and the second damper 8 are controlled to be opened or closed.

[0075] Among them, when the user needs to use the defrosting function of the refrigerator, the user can first put the food to be thawed on the tray of the thawing chamber 2. After closing the refrigerator door, by selecting the defrosting function, the controller 12 can receive the thawing instruction. At this time, the controller 12 obtains the evaporation chamber temperature and evaporation chamber humidity detected by the temperature and humidity sensor 6, and obtains the surface temperature of the food to be thawed detected by the temperature sensor 11; compares the evaporation chamber temperature with the surface temperature and compares the evaporation chamber humidity with the preset humidity range, and then controls the first air door 10, the second air door 8 and the fan 4 to be opened or closed.

[0076] The evaporation chamber temperature is compared with the surface temperature and the evaporation chamber humidity is compared with the preset humidity range, and then the first damper 10, the second damper 8 and the fan 4 are controlled to be turned on or off as follows:

[0077] If the evaporation chamber temperature is greater than the surface temperature and the evaporation chamber humidity is within the preset humidity range, the first damper 10 and the fan 4 are controlled to open, and the second damper 8 is controlled to close;

[0078] If the evaporation compartment temperature is lower than the surface temperature or the evaporation compartment humidity is not within the preset humidity range, the defrost heater is controlled to start so that the evaporation compartment temperature is higher than the surface temperature and the evaporation compartment humidity is within the preset humidity range.

[0079] Specifically, the preset humidity range is 80-100%. When the humidity in the evaporation compartment is less than 80%, it indicates that the humidity of the gas in the evaporation compartment 3 is low, and the humidity in the evaporation compartment 3 needs to be increased before thawing can begin. Therefore, the defrost heater can be controlled to start, which can remove frost on the surface of the evaporator 5 on the one hand, and increase the humidity in the evaporation compartment 3 through the defrost heater on the other hand. In addition, since the defrost heater is arranged in the evaporation compartment 3, the refrigeration effect of the refrigeration compartment 1 will not be affected after the defrost heater is started and heated.

[0080] After the surface temperature of the food to be thawed is obtained by the temperature sensor 11, it is also necessary to compare the evaporation chamber temperature obtained by the temperature and humidity sensor 6 with the surface temperature. Since the food to be thawed needs to be thawed, the evaporation chamber temperature needs to be greater than the surface temperature of the food to be thawed. Therefore, when the evaporation chamber temperature is lower than the surface temperature or the evaporation chamber humidity is not within the preset humidity range, the defrost heater can be turned on to increase the temperature in the evaporation chamber 3 and increase the humidity in the evaporation chamber 3. When the evaporation chamber humidity is within the preset humidity range and the evaporation chamber temperature is greater than the surface temperature, the defrost heater is stopped, the second air door 8 is closed, the first air door 10 and the fan 4 are turned on, and the high-humidity gas in the evaporation chamber 3 is discharged into the thawing chamber 2 through the fan 4. The food to be thawed in the thawing chamber 2 will be continuously flushed by the high-humidity gas, thereby causing the problem of uneven thawing of the food to be thawed. In addition, due to the high humidity of the gas, the problem of dry consumption of meat due to thawing can also be solved.

[0081] During the thawing process of the food to be thawed, in order to prevent the problem of blood in the food to be thawed, the surface temperature of the food to be thawed can be detected in real time to control the thawing process.

[0082] Specifically, in some embodiments, after controlling the first damper 10 and the fan 4 to open and controlling the second damper 8 to close, the controller 12 is further configured to:

[0083] If the surface temperature is greater than the first preset temperature, the fan 4 is controlled to be turned off;

[0084] Obtain surface temperature at preset intervals;

[0085] If the surface temperatures are all greater than the first preset temperature, then the difference between the evaporation compartment temperature and the first preset temperature is calculated;

[0086] If the difference is less than the second preset temperature, the fan 4 and the second damper 8 are controlled to open, and the first damper 10 is controlled to close.

[0087] Among them, since the food to be thawed in this application is meat, the first preset temperature can be set to a range of 1-3°C below the freezing point of meat. For example, the freezing point of meat is generally -2°C, and the first preset temperature is set to any value between -6-0°C. When the first preset temperature is -3°C, when the surface temperature of the food to be thawed is detected to be -2°C, the fan 4 can be controlled to stop.

[0088] Since the surface temperature detected when the fan 4 is turned on will be affected by the flowing gas, in order to more accurately detect the surface temperature of the food to be detected, after the fan 4 stops, the surface temperature of the food to be thawed is detected multiple times at a preset interval. The preset interval is any number from 1 to 10 minutes, the preset interval is 1 minute, or the preset interval is 2 minutes, ..., or the preset interval is 10 minutes. For example, when the preset interval is 5 minutes, the surface temperature of the food to be thawed is detected every 5 minutes. When the surface temperature after multiple detections is lower than the first preset temperature, the fan 4 can be turned on again to thaw the food to be thawed.

[0089] When the surface temperature after multiple detections is greater than the first preset temperature, it is possible to determine whether the surface and interior of the food to be thawed are both in a slightly frozen state by calculating the difference between the evaporation chamber temperature and the first preset temperature.

[0090] For example, the second preset temperature is any value between 0-1°C. When the second preset temperature is 1°C, the evaporation compartment temperature is -1.5°C, and the first preset temperature is -2°C. The difference between the evaporation compartment temperature and the first preset temperature is 0, that is, the difference is less than the second preset temperature. It can be determined that the thawing of the food to be thawed is complete, and the first damper 10 can be controlled to close so that the food to be thawed is maintained in this state in the thawing chamber 2. The fan 4 can be controlled to start and the second damper 8 can be controlled to open to supply cooling to the refrigerator chamber 1.

[0091] In some embodiments, the controller 12 is further configured to:

[0092] If the difference is less than the preset temperature value, the fan 4 is controlled to turn on;

[0093] If the difference is greater than the second preset temperature, the defrost heater is controlled to be turned on for a preset time.

[0094] The preset temperature value is 0°C, that is, when the difference between the evaporation chamber temperature and the first preset temperature is less than the preset temperature value, it is determined that the food to be thawed has not completed the slightly frozen state from the inside out, and the fan 4 needs to be controlled to start and continue the thawing process.

[0095] If the difference between the evaporation compartment temperature and the first preset temperature is greater than the second preset temperature, it means that the temperature in the evaporation compartment 3 is low and the evaporation compartment temperature needs to be increased.

[0096] In some embodiments, a refrigeration system is also included, and the refrigeration system includes a compressor and a refrigeration pipeline connected to the compressor; the controller 12 is also configured to:

[0097] If the evaporation compartment temperature is lower than the surface temperature or the evaporation compartment humidity is not within the preset humidity range, the refrigeration pipeline is controlled to be closed and the compressor is turned off;

[0098] If the difference is less than the second preset temperature, the compressor is controlled to start and the refrigeration pipeline is connected.

[0099] Among them, when the temperature of the evaporating compartment is lower than the surface temperature or the humidity of the evaporating compartment is not within the preset humidity range, the evaporator 5 needs to be heated and humidified. At this time, the compressor and the refrigeration pipeline can be turned off, and the evaporating compartment 3 can be heated and humidified through the defrost heater. When the difference is less than the second preset temperature, it means that the thawing is completed. At this time, the evaporator 5 needs to be cooled down. The evaporator 5 can be cooled down by turning on the compressor and connecting the refrigeration pipeline to prepare for the refrigeration of the cold storage room 1.

[0100] It can be understood that the refrigeration circuit includes a capillary tube, a condenser and a pipe for transporting refrigerant.

[0101] In some embodiments, the first air gate 10 is arranged at the air inlet of the first air duct 9, the second air gate 8 is arranged at the air inlet of the second air duct 7, the horizontal height of the air inlet of the first air duct 9 is smaller than the horizontal height of the air inlet of the second air duct 7, the horizontal height of the air inlet of the first air duct 9 is greater than the horizontal height of the air outlet of the first air duct 9, and the horizontal height of the air inlet of the second air duct 7 is smaller than the horizontal height of the air outlet of the second air duct 7.

[0102] In the present application, the air outlet of the second air duct 7 is set at a higher height. When the refrigerating chamber 1 is refrigerated, the cold air is discharged into the refrigerating chamber 1 through the fan 4, and the cold air will naturally sink. At the same time, the air outlet of the first air duct 9 is set at a lower level. When the fan 4 discharges the high-humidity gas in the evaporation chamber 3 into the thawing chamber 2, the wind speed can be increased to reduce the thawing time.

[0103] In the embodiment of the present application, when the food to be thawed is thawed, the temperature sensor 11 will detect the surface temperature of the food to be thawed in real time, and control the temperature in the thawing chamber 2 to keep the temperature in the thawing chamber 2 constant within a certain range, so that the food can be stored in a slightly frozen state. On the one hand, the storage time of the food can be increased, and on the other hand, it can also prevent the food from bleeding and contaminating the refrigerator.

[0104] In addition, a reminder module can also be set up to remind the user that the thawing is complete when the thawing of the food to be thawed is completed, to prevent the user from forgetting and causing the food to deteriorate due to not taking out the thawed food for a long time.

[0105] In some embodiments, Figure 2 As shown, the embodiment of the present application provides a method for thawing food stored in a refrigerator, which is applied to the refrigerator provided in the above embodiment, comprising:

[0106] In response to a thawing instruction for thawing stored food, the evaporation chamber temperature and evaporation chamber humidity detected by the temperature and humidity sensor 6 are obtained, and the surface temperature of the food to be thawed is detected by the temperature sensor 11;

[0107] comparing the evaporation chamber temperature with the surface temperature to generate a first comparison result;

[0108] comparing the humidity of the evaporation chamber with a preset humidity range to generate a second comparison result;

[0109] According to the first comparison result and the second comparison result, the fan 4, the first damper 10 and the second damper 8 are controlled to be opened or closed.

[0110] In some embodiments, the method for thawing refrigerator storage items further comprises:

[0111] If the evaporation chamber temperature is greater than the surface temperature and the evaporation chamber humidity is within the preset humidity range, the first damper 10 and the fan 4 are controlled to open, and the second damper 8 is controlled to close;

[0112] If the evaporation compartment temperature is lower than the surface temperature or the evaporation compartment humidity is not within the preset humidity range, the defrost heater is controlled to start, the refrigeration pipeline is controlled to close, and the compressor is turned off.

[0113] In some embodiments, the method for thawing refrigerator storage items further comprises:

[0114] If the surface temperature is greater than the first preset temperature, the fan 4 is controlled to be turned off;

[0115] Obtain surface temperature at preset intervals;

[0116] If the surface temperatures are all greater than the first preset temperature, then the difference between the evaporation compartment temperature and the first preset temperature is calculated;

[0117] If the difference is less than the second preset temperature, the fan 4 and the second damper 8 are controlled to open, the first damper 10 is controlled to close, the compressor is controlled to start, and the refrigeration pipeline is connected.

[0118] It can be seen from the above technical scheme that the present application provides a refrigerator and a method for thawing food stored in the refrigerator, the refrigerator comprising: a refrigerating chamber 1; a thawing chamber 2, the thawing chamber 2 is in the refrigerating chamber 1; an evaporating chamber 3, an evaporator 5 and a fan 4 are arranged in the evaporating chamber 3; the thawing chamber 2 is connected to the evaporating chamber 3 through a first air duct 9; the refrigerating chamber 1 is connected to the evaporating chamber 3 through a second air duct 7; the first air duct 9 is provided with a first air door 10, and the second air duct 7 is provided with a second air door 8; the evaporator 5 is provided with a temperature and humidity sensor 6, and the thawing chamber 2 is provided with a temperature sensor 11; a controller 12, the controller 12 is respectively connected to the humidity sensor, the temperature sensor The controller 12 is configured to: respond to a thawing instruction for thawing stored food, obtain the evaporation compartment temperature and evaporation compartment humidity detected by the temperature and humidity sensor 6, and obtain the surface temperature of the food to be thawed detected by the temperature sensor 11; compare the evaporation compartment temperature with the surface temperature to generate a first comparison result; compare the evaporation compartment humidity with a preset humidity range to generate a second comparison result; and control the fan 4, the first damper 10 and the second damper 8 to be opened or closed according to the first comparison result and the second comparison result. By setting a thawing chamber 2 in the refrigerator refrigerating chamber 1, the food to be thawed is thawed to a slightly frozen and easy-to-cut temperature by using the high humidity gas in the evaporation chamber 3, and then the temperature in the thawing chamber 2 is controlled within a constant range of slightly frozen and easy-to-cut. By controlling the opening or closing of the first damper 10 and the fan 4, the effect of supplying high-humidity gas to the thawing chamber 2 can be achieved, so as to solve the problem that the surface temperature of the stored food cannot be accurately captured during the thawing process, resulting in long thawing time and uneven thawing.

[0119] Similar parts between the embodiments provided in this application can be referenced to each other. The specific implementation methods provided above are only a few examples under the general concept of this application and do not constitute a limitation on the protection scope of this application. For those skilled in the art, any other implementation methods expanded based on the scheme of this application without creative work belong to the protection scope of this application.

Claims

1. A refrigerator, characterized in that: include: Cold room; a thawing chamber, the thawing chamber being located within the refrigerating chamber; An evaporation chamber, wherein an evaporator and a fan are arranged in the evaporation chamber; The thawing chamber is connected to the evaporation chamber through a first air duct; the refrigeration chamber is connected to the evaporation chamber through a second air duct; The first air duct is provided with a first air door, and the second air duct is provided with a second air door; The evaporator is provided with a temperature and humidity sensor, and the thawing chamber is provided with a temperature sensor; A controller, wherein the controller is respectively connected to the humidity sensor, the temperature sensor, the first damper, the second damper, the evaporator, and the fan; The controller is configured to: In response to a thawing instruction for thawing stored food, the evaporation chamber temperature and the evaporation chamber humidity detected by the temperature and humidity sensor are obtained, and the surface temperature of the food to be thawed is detected by the temperature sensor is obtained; comparing the evaporation compartment temperature with the surface temperature to generate a first comparison result; comparing the evaporation chamber humidity with a preset humidity range to generate a second comparison result; The fan, the first damper, and the second damper are controlled to be opened or closed according to the first comparison result and the second comparison result.

2. The refrigerator according to claim 1, characterized in that: It also includes a defrost heater, and the controller is configured to: If the evaporation compartment temperature is greater than the surface temperature and the evaporation compartment humidity is within the preset humidity range, controlling the first damper and the fan to open, and controlling the second damper to close; If the evaporation compartment temperature is lower than the surface temperature or the evaporation compartment humidity is not within the preset humidity range, the defrost heater is controlled to start so that the evaporation compartment temperature is higher than the surface temperature and the evaporation compartment humidity is within the preset humidity range.

3. The refrigerator according to claim 2, characterized in that: After controlling the first damper and the fan to open and controlling the second damper to close, the controller is further configured to: If the surface temperature is greater than a first preset temperature, the fan is controlled to be turned off; Acquiring the surface temperature at preset intervals; If the surface temperatures are all greater than a first preset temperature, calculating a difference between the evaporation compartment temperature and the first preset temperature; If the difference is less than the second preset temperature, the fan and the second damper are controlled to open, and the first damper is controlled to close.

4. The refrigerator according to claim 3, characterized in that: The controller is also configured to: If the difference is less than the preset temperature value, the fan is controlled to turn on; If the difference is greater than the second preset temperature, the defrost heater is controlled to be turned on for a preset time.

5. The refrigerator according to claim 3, characterized in that: The first preset temperature is any value in the range of 0-6°C; the second preset temperature is any value in the range of 0-1°C; the preset interval time is any value in the range of 1-10 minutes; the humidity range is 80-100%, and the preset temperature value is 0°C.

6. The refrigerator according to claim 4, characterized in that: The system further includes a refrigeration system, wherein the refrigeration system includes a compressor and a refrigeration pipeline connected to the compressor; and the controller is further configured to: If the temperature of the evaporation compartment is lower than the surface temperature or the humidity of the evaporation compartment is not within the preset humidity range, the refrigeration pipeline is controlled to be closed and the compressor is turned off; If the difference is less than the second preset temperature, the compressor is controlled to start and the refrigeration pipeline is connected.

7. The refrigerator according to claim 1, characterized in that: The first air gate is arranged at the air inlet of the first air duct, the second air gate is arranged at the air inlet of the second air duct, the horizontal height of the air inlet of the first air duct is smaller than the horizontal height of the air inlet of the second air duct, the horizontal height of the air inlet of the first air duct is larger than the horizontal height of the air outlet of the first air duct, and the horizontal height of the air inlet of the second air duct is smaller than the horizontal height of the air outlet of the second air duct.

8. A method for thawing food stored in a refrigerator, applied to the refrigerator according to any one of claims 1 to 7, characterized in that: include: In response to a thawing instruction for thawing stored food, the temperature and humidity of the evaporation chamber detected by the temperature and humidity sensor are obtained, and the surface temperature of the food to be thawed is detected by the temperature sensor; comparing the evaporation compartment temperature with the surface temperature to generate a first comparison result; comparing the evaporation chamber humidity with a preset humidity range to generate a second comparison result; The fan, the first damper and the second damper are controlled to be opened or closed according to the first comparison result and the second comparison result.

9. The method for thawing food stored in a refrigerator according to claim 8, characterized in that: The method further comprises: If the evaporation compartment temperature is greater than the surface temperature and the evaporation compartment humidity is within the preset humidity range, controlling the first damper and the fan to open, and controlling the second damper to close; If the temperature of the evaporation compartment is lower than the surface temperature or the humidity of the evaporation compartment is not within the preset humidity range, the defrost heater is controlled to start, the refrigeration pipeline is controlled to close, and the compressor is controlled to close.

10. The method for thawing food stored in a refrigerator according to claim 9, characterized in that: The method further comprises: If the surface temperature is greater than a first preset temperature, the fan is controlled to be turned off; Acquiring the surface temperature at preset intervals; If the surface temperatures are all greater than a first preset temperature, calculating a difference between the evaporation compartment temperature and the first preset temperature; If the difference is less than the second preset temperature, the fan and the second damper are controlled to open, the first damper is controlled to close, the compressor is controlled to start, and the refrigeration pipeline is connected.

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